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AR Series Shell and Tube Heat Exchanger – TEMA Type AEW, AET, BEP, AES

The AR Series Heat Exchanger with removable bundle accommodates high temperature differentials and is designed to function well under the stress effects of thermal expansion and retraction.

R.P. Adams can supply units having wide range of shell diameters, gas flow capabilities and liquid flow rates. Contact our factory for your next removable bundle shell and tube heat exchanger. Adams Shell and Tube Heat Exchangers are available in a wide range of materials of construction including carbon steel, stainless steels, admiralty brass, and cupro-nickels to name a few. Adams tubular heat exchangers meet TEMA and ASME Section VIII, Division I code requirements.

AF Series Heat Exchangers – TEMA Type BEM, BEL, NEN

The AF Series Heat Exchanger is ideal for hazardous or flammable gasses or liquids. There is no chance for external fluid leakage, and no packing required to isolate the two fluids.

R.P. Adams can supply units having a wide range of shell diameters, gas flow capabilities and liquid flow rates. Contact our factory for your next fixed shell and tube application. Adams fixed Shell and Tube Heat Exchangers are available in a wide range of materials of construction including carbon steel, stainless steels, admiralty brass, and cupro-nickels to name a few. Adams tubular heat exchangers meet TEMA and ASME Section VIII, Division I code requirements.

AU Series U-Tube Shell Heat Exchanger – TEMA Type AEU, BEU

The AU Series Heat Exchanger is ideal for hazardous or flammable gasses or liquids. There is no chance for external fluid leakage, and no packing required to isolate the two fluids.

R.P. Adams can supply units having wide range of shell diameters, gas flow capabilities and liquid flow rates. Contact our factory for your next U-tube heat exchanger application. Adams Shell and Tube Heat Exchangers are available in a wide range of materials of construction including carbon steel, stainless steels, admiralty brass, and cupro-nickels to name a few. Adams tubular heat exchangers meet TEMA and ASME Section VIII, Division I code requirements.

AKU Series Kettle Type Heat Exchanger – TEMA type AKU, BKU

The AKU Kettle Type Series Heat Exchanger includes a removable U-tube bundle, stands up well to stress, and the shell side can be flooded with ammonia as cooling media.

R.P. Adams can supply units having wide range of shell diameters, gas flow capabilities and liquid flow rates. Contact our factory for your next kettle type heat exchange application. Adams Shell and Tube Heat Exchangers are available in a wide range of materials of construction including carbon steel, stainless steels, admiralty brass, and cupro-nickels to name a few. Adams tubular heat exchangers meet TEMA and ASME Section VIII, Division I code requirements.

Economat: Heat Recovery / Reheat System

Adams Reheat Systems are custom packages specifically designed to add energy back into your compressed air system. This package is unique in the industry, utilizing the heat of compression to recover the lost gas volume and deliver clean, dry air without the need for an external energy source. Therefore, free heat is being provided to your compressed air process. The system is efficient enough to take the place of a refrigerated dryer. Typical dew points achieved range from as low as 35°F to 90°F pending on coolant inlet temperature. The system also reheats the compressed air to temperatures desired for your process.

Adams Reheat systems come in a variety of configurations. The Economat / Heat Recovery Systems are used with a single or multiple cooling source. When a refrigerant is available at the plant, such a ammonia refrigeration in a food processing facility, then the AKU Heat Recover System is recommended.

SAF Aftercoolers

Adams SAF aftercoolers incorporate highly efficient counter flow design, with air in the tubes and water in the shell. In this design, air can be made to more nearly approach cooling water temperature than in any other, thus assuring drier discharge air. SAF Aftercoolers are available in sizes to handle up to 50,000 cubic feet of air per minute at pressures to 1,000 PSIG.

SFT Aftercoolers

R.P. Adams Model SFT Fixed Bundle Aftercoolers offer maximum heat transfer surface for a given shell and tube size. Units have air or gas in the tubes and the coolant in the shell. Tube side is easily accessible for inspection and for mechanical or chemical cleaning. The shell side may be cleaned by back flushing or chemical means.

SLB Aftercoolers

SLB Aftercooler provides consistent process control in less space

Adams Model SLB (Short Length Bare Tube) Aftercooler with integral Separator provides enhanced cooling and flow capabilities compared to conventional aftercoolers. As a result, you can realize significant cost savings, while meeting the demands of your application where space is at a minimum. In addition, Adams designs and manufactures the aftercooler and separator as an integrated system to certify performance, fit and quality.

SAR Aftercoolers

SAR Removable Bundle Aftercoolers efficiently cool compressed air or gas using corrosive or dirty coolants.

R.P. Adams Model SAR Aftercoolers are designed to effectively cool compressed air or gas when dirty or corrosive liquid coolant must be used, such as sea water, hard water, river water, etc. The compressed gas is on the shell side while the dirty or corrosive coolant flows in the tubes. By having the corrosive coolant in the tubes, exotic alloy materials used for corrosion protection are limited to the tubes, tubesheets, and bonnets, thereby keeping capital equipment costs to a minimum. In addition, this configuration allows accessibility to the coolant side for inspection and simplifies cleaning.

Separators

ADAMS CY Series Cyclone Separators effectively remove up to 85% of condensed liquid and other contaminants, such as pipe scale and rust, from an air or gas stream to protect sensitive pneumatic equipment. Better moisture removal also helps dryers work more efficiently.

Located immediately after an Aftercooler, the cyclone separator with its conical bottom produces a cyclone action forcing entrained droplets and particles to the outer walls of the unit. These contaminants travel to a reservoir at the bottom of the unit and then into a drain for discharge. The inner vortex of the Separator prevents re-entrainment and provides maximum efficiency over a wide range of loads.

Separators are available in a range of materials of construction including: cast iron, ductile iron, carbon steel, and stainless steels. The cast and ductile iron units are available from stock while others are made to order.

Adams Automatic Strainers

Cost Effective, Continuous Protection for Downstream Equipment

R.P. Adams Automatic Self-Cleaning Strainers, also called automatic backwash strainers, remove suspended solids, dirt, and debris from many different water streams and process fluids. These strainers work around the clock providing reliable, efficient, un-attended operation.

Adams strainers have a rugged design and are a cost effective solution for continuous protection of downstream equipment, reducing maintenance and downtime for heat exchangers, spray systems, and process equipment.

Manual Strainers

Multi-Element Filter for Fine Filtration Applications

R.P. Adams offers a complete line of manual strainers to complement the automatic self cleaning strainer.

Available in cast iron, cast stainless steel, and cast bronze; also fabricated strainers in carbon steel, stainless steel, and alloys

Sizes from ½” to 48” nozzle connections

Design pressures include 125#, 150# and 300#. Higher pressure ratings and other materials to meet your solution

IWF Filters

Multi-Element Filter for Fine Filtration Applications

The R.P. Adams IWF Filter is a multi-element tubular filter designed to remove fine particulates from liquid process streams. Utilizing a filter aid precoat, it can remove particulate as fine as 0.5 micron with flow rates up to 2 gpm/ft2 of filter area.

Air & Gas Filtration

Improve Plant Production and Minimize Maintenance Costs for Sensitive Air & Gas Handling Systems

No matter what the industry, contamination of gas streams such as compressed air and natural gas can dramatically increase maintenance costs and product rejects – and even shut your process or plant down.

That’s why leading companies all over the world rely on R.P. Adams air and gas line filters to prevent clogging and friction wear caused by slime, pipe scale and rust, as well as airborne particles including dirt, oils, carbon and moisture.

GP Filters – Air & Gas

Improve plant production and minimize maintenance costs for sensitive air and gas handling systems

Contamination of steam can dramatically increase maintenance costs and even shut your process or plant down. R.P. Adams gas filters prevent clogging and friction wear caused by dirt, rust, pipe scale, solid contaminants such as particles of packing and gasket materials, lubricants and boiler feed water additives.

Strain Gauge Piezometer

The Geosense® SGP-3400 Series of strain gauge piezometers are designed for monitoring soil pore pressure or changes in water level and are also suitable for dynamic monitoring such as pumping tests.

They are accurate, highly-reliable and suitable for use in the harsh environments often found within civil engineering including water wells, boreholes, dams, reservoirs, rivers, tanks or any other body of water.

The sensor is housed in a robust stainless steel sealed body with a porous filter tip, which are available in different porosities to suit specific site conditions.

It comprises a highly sensitive stainless steel diaphragm onto which a Wheatstone bridge strain gauge is mounted and connected to a signal-conditioning board to convert to a 4-20mA output within the piezometer housing.

Water Level Meter

A Water Level and Temperature Meter is used to determine the water level and temperature within a borehole, piezometer pipe or sump.

It consists of a stainless steel shrouded probe with a specially designed conductive probe to minimise displacement errors, providing unparalleled accuracy particularly in small bore piezometers.

As the probe is lowered into the water, a single audible buzz is heard and a red light shows.

The temperature is shown in degrees Celsius on an LCD digital display mounted on the side of the reel.

Mounted on a rugged lightweight drum with integral brake and probe holder for easy operation and storage and has all the same features as the standard water level meter.

Multi-Point VW Piezometer

Fully grouted installation permits multiple piezometers to be simply and reliably installed in a single borehole. The piezometer string and grout pipe are placed in the borehole and cement-bentonite grout is pumped until the borehole is filled.

Multi-point Piezometer Strings allow for multiple Vibrating Wire Piezometers to be connected on a single cable. This facilitates the installation of fully grouted multiple piezometers. The single cable prevents vertical void channels. Tough urethane jacketed, Kevlar® reinforced, non-stretch cable is employed to withstand the rigours of installation and is entirely water-blocked to minimize any leakage. No conductors are shared to maximize independent reliability of each sensor.

Vibrating Wire Piezometers provide excellent long-term accuracy, stability of readings and reliability under demanding geotechnical conditions. Vibrating Wire Piezometers are the electrical piezometers of choice as the frequency output of vibrating wire devices is immune to external electrical noise, and able to tolerate wet wiring common in geotechnical applications.

Standpipe Piezometer

Simple and economic measurement of groundwater pressures in soil and rock can be carried out using Casagrande type piezometers.

Geosense® piezometers are made up of low air entry porous plastic or ceramic elements which are connected to standpipe tubing and lowered into a predrilled borehole. Alternative types may be driven or pushed into soft soil.

Where Casagrande type piezometers are being installed then the porous element is surrounded by filter sand and a Bentonite seal placed above this response zone.

VW Pressure Transducer

The Geosense® VWT-9000 Series of Pressure Transducers are designed to be connected directly into hydraulic or pneumatic pressure lines by means of a 1/4” BSPF thread. Other thread sizes are available on request.

They are typically used to monitor uplift pressures within dams and to enable manual standpipe piezometers to be upgraded into an automated data acquisition system.

They are accurate, highly-reliable and suitable for use in the harsh environments often found within civil engineering including water wells, boreholes, dams, reservoirs, rivers, tanks or any other body of water.

Vibrating Wire technology is a well-proven method of converting fluid pressures on a sensitive diaphragm into a frequency signal which is capable of long transmission distances without degradation, tolerant of wet wiring conditions and resistant to external electrical noise.

Magnetic Extensometers

The Geosense® GEO-XM settlement system is a magnet extensometer system used typically to monitor settlement and heave in foundations, excavations and embankments.

Data received identifies the depth and position where settlement has occurred as well as the total amount of settlement.

It can also be installed behind retaining structures, such as sheet piles and slurry walls, and above underground openings, such as tunnels and shafts.

The system comprises a central access tube along which magnetic targets are positioned at various locations. Settlement is measured by the relative position of the magnetic targets using a Reed Switch Probe lowered down through the central access casing.

Reed Switch Probe

The Reed Switch Probe is used to determine the location of magnetic sensors in magnetic settlement systems.

When the reed switch passes through a magnetic field, it closes; completing a circuit and a buzzer is activated.

Borehole Rod Extensometer

The Geosense® GEO-XB2 borehole rod type extensometer range is used to measure and locate settlement, displacement and deformation in soil and rock.

It consists of a reference head and one or more in-hole anchors each of which is placed at a known depth and connected to the reference head by either a rigid or flexible rod running inside a flexible sleeve, which keeps the rod de-bonded from the grout.

As the soil or rock deforms the distances between the in-hole anchors change, as do the distances between the individual in-hole anchors and the reference head. The magnitude, distribution and rate of deformation can be accurately measured at the reference head.

The GEO-XB2 rod type extensometer range is available in a wide range of reference heads, anchors, rods and measuring sensors.

VW Soil Extensometer

The Geosense® GEO-XS VW Soil Extensometer monitors lateral and longitudinal deformation of soil and different types of embankments and embankment dams

It comprises a displacement transducer connected to an extension rod and fixed between a pair of anchor beams.

The assembly is housed in and protected by an external telescopic sleeve. To form a ‘Chain Extensometer’, Soil Extensometers are linked together, in series, using the anchor beams as connectors.

As structural movement occurs, the rod is moved within the housing. The shaft movement changes the tension in the sensor spring which, in turn, changes the tension in the Vibrating Wire.

Wire Deformeter Geo-DW300

The GEO-DW300 Wire Deformeter is designed to monitor the changes in distance between two anchor points and is available with either vibrating wire or potentiometer transducers. A stainless steel wire connects the transducer to the opposing anchor.

The mounting plate holds the transducer at one end and a pulley at the other end. A stainless steel wire connects the transducer to the opposing anchor. The pulley allows the transducer and anchor to be mounted on different planes, including perpendicular surfaces, up to 10m apart. The spring-loaded transducer keeps the steel wire tensioned.

Typical applications include monitoring cracks or displacements in civil structures.

Wire Deformeter Geo-DW300

The GEO-XW100 Wire Extensometer is designed to monitor the changes in distance between two anchor points up to a maximum of 30 metres apart.

It comprises a rotary potentiometric displacement gauge, an opposing anchor and a stainless steel wire that runs between the displacement gauge and the opposing anchor. With a wire extension kit, the length of the wire can be extended up to a maximum distance of 30 metres.

The displacement gauge is housed within a rugged steel enclosure with a mounting plate for horizontal or vertical mounting.

Tunnel Profile Monitoring

The Tunnel Profile Monitoring System is a series of linked rods, fixed to the tunnel wall, to monitor deformation. A data logging system and related software is available to provide near real time displacement and generate a graphical representation of tunnel performance.

A system of linked arms is affixed to the tunnel wall. Each arm is fitted with a high accuracy displacement sensor and precision tilt meter. Spatial displacement of the pins and arms results in changed tilt and displacement readings. The data logger system automatically collects the data and transmits it to a computer. The computer then analyzes the data, and calculates the displacement profile for presentation.

The system is available in either open or closed loop configurations. The closed loop method is analogous to conventional closed end survey techniques, while the open loop must be referenced to a known location.

Digital Tape Extensometer

The Digital Tape Extensometer is a portable device used for measuring displacement between reference anchors fixed to an excavation or structure.

The instrument consists of a precision punched steel tape incorporating a repeatable tensioning system and dial gauge readout. The tape winds onto a reel, which incorporates a tape tensioning device and a digital LCD readout.

The body of the extensometer has a hook connector that connects to the first eyebolt. An identical hook on the free end of the tape connects to the opposing eye bolt. The user then tensions the instrument and records the readings from the digital LCD display. The measurements are not absolute, but relative to the previous measurement. This provides an accurate record of displacement over time.

VW Displacement Gauge 5000

Geosense® VWDT-5000 series of vibrating wire displacement transducers cover displacement ranges up to 300mm and are fully waterproof to a minimum of IP68 (16 bar external pressure). They can be incorporated into many displacement products such as crack and joint meters, convergence meters, soil extensometers and displacement meters.

VWDT-5000 transducers are particularly rugged, and are carefully constructed and thermally aged to minimise long term drift and changes in calibration. The gauges will withstand demanding environmental factors encountered in Civil Engineering construction sites such as tunnels and piling applications

The data from the VWDT-5000 can be monitored by means of a portable read-out unit or connected to a data logger and distributed if required by telemetry.

VW 3D Crack Meter 4600

Geosense® VWTCM-4600 3D crack meters monitor three-way displacement across cracks and joints in concrete, rock, soil and structures.

The central reference block allows the vibrating wire transducers to show independent movement in all directions, irrespective of each other.

The VWTCM-4600 comprises a 3D mounting frame comprising two arms and two groutable anchors. Three vibrating wire displacement transducers, which also monitor temperature, are installed in the mounting frame.

Groutable anchors are installed either side of a joint or crack; the installation jig provided ensures that the two anchors are positioned correctly. Once they are set in position the installation jig is removed and the VW transducers installed. They are positioned against the reference block and typically set to their mid-point.

LP Crack Meter 4500

Geosense® LPCM-4500 crack meters are used to measure movement across surface cracks and joints in concrete, rock, soil and structures.

They consist of a potentiometric displacement transducer housed in an aluminium body with a stainless steel shaft with two anchoring points.

The potentiometer works on the principle of an outer body tube and an inner free-sliding wiper which makes electrical contact along a strip of fixed resistance. A regulated DC voltage is applied to the two ends of the resistance strip and the voltage between one end of the strip and the contact point of wiper and strip is measured as the output signal. On board signal conditioning provides an output signal in 4-20mA.

LPCM-4500 crack meters are installed by grouting, bolting, bonding or fixing expandable anchors to the structure to be monitored. The anchors incorporate ball joints where they are fixed to the gauge which accommodate any differential cross-axis movement and prevent the inner rod from binding within the outer casing

VW Crack Meter 4000

Geosense® VWCM-4000 crack meters are used to measure movement across surface cracks and joints in concrete, rock, soil and structures

They consist of a sensor outer body tube and an inner free-sliding rod which is connected at the internal end to a vibrating wire sensor by a spring. At the sensor end of the outer body and the external end of the rod anchors are attached which can be fixed either side of a crack to be monitored.

The gauge operates on the principle that a tensioned wire, when plucked, vibrates at its resonant frequency. The square of this frequency is proportional to the strain in the wire. Around the wire is a magnetic coil which when pulsed by a vibrating readout or data logger interface plucks the wire and measures the resultant resonant frequency of vibration.

A change in distance between the anchors caused by the crack opening or closing causes the inner free-sliding rod to move within the outer body which changes the tension on the spring and the vibrating wire thus altering the resonant frequency of the wire.

Manual 3D Crack Meter

The Geosense® manual 3D crack meters are designed to monitor three way displacement (X, Y and Z) across joints or cracks between adjoining concrete and rock structures.

It comprises of two steel blocks A & B. One (A) having flat machined discs mounted on the X,Y, Z axes and the other (B) having matching machined discs through which the stem of a manual dial gauge can be placed to measure any movement in any axis.

The re-bar anchors on the bottom of each block are grouted adjacent to each other into the structure that is being measured.

LP Displacement Gauge 5500

Geosense® LPDT-5500 series of linear potentiometer displacement gauges cover displacement ranges up to 300 mm.

They can be incorporated into many displacement products such as rod extensometers, crack and joint meters, convergence meters, soil extensometers and displacement meters.

Constructed from aluminium alloy and stainless steel they are lightweight but robust making them ideal for the harsh environments found within civil engineering.

VW Joint Meter

The Geosense® Vibrating Wire Joint meter is developed to monitor joints of mass concrete structures.

The Geosense® Vibrating Wire Joint meter is developed to monitor joints of mass concrete structures.

Opening and closing of joint is then measured by the gauge, which is firmly anchored in both blocks. The instrument body includes universal joints, on which sensing element is mounted, accommodating a small degree of shear movement that might occur.

INFODATASHEETSDATA HANDLINGAPPLICATION The Geosense® Vibrating Wire Joint meter is developed to monitor joints of mass concrete structures. The instrument consists of two parts, a socket and the main body with a waterproof vibrating wire sensing gauge. During construction of the structure, the socket is secured to the form and embedded into a lift of the block to be constructed. After removal of the form, and prior to concreting of adjacent block, the gauge is screwed into the socket, set at the desired range and then embedded into concrete. Opening and closing of joint is then measured by the gauge, which is firmly anchored in both blocks. The instrument body includes universal joints, on which sensing element is mounted, accommodating a small degree of shear movement that might occur. The vibrating wire joint meter is a robust and accurate instrument with excellent long-term stability. It can be measured by vibrating wire portable readout units or a data logger if remote continuous monitoring of the joints is required. All measurements are compared to an initial datum reading, providing a history of magnitude and rate of movement at the joint.

Liquid Settlement System

The Geosense® VWLSS-200 Vibrating Wire Liquid Settlement System is used to monitor settlement or heave in soils and other structures such as embankments, earth and rockfill dams.

The main components are a reservoir (single or multiple), liquid-filled tubing and a vibrating wire pressure transducer cell mounted on a plate or, for borehole application, attached to an anchor.

The vibrating wire sensor is attached to a settlement plate at the point of estimated settlement. The sensor is connected via two liquid-filled tubes which are connected to a reservoir located on stable ground.

Magnetic Extensometers

The Geosense® GEO-XM settlement system is a magnet extensometer system used typically to monitor settlement and heave in foundations, excavations and embankments.

Data received identifies the depth and position where settlement has occurred as well as the total amount of settlement.

It can also be installed behind retaining structures, such as sheet piles and slurry walls, and above underground openings, such as tunnels and shafts.

It can also be installed behind retaining structures, such as sheet piles and slurry walls, and above underground openings, such as tunnels and shafts.

Magnetic Extensometers

The Geosense® GEO-XM settlement system is a magnet extensometer system used typically to monitor settlement and heave in foundations, excavations and embankments.

Data received identifies the depth and position where settlement has occurred as well as the total amount of settlement.

It can also be installed behind retaining structures, such as sheet piles and slurry walls, and above underground openings, such as tunnels and shafts.

It can also be installed behind retaining structures, such as sheet piles and slurry walls, and above underground openings, such as tunnels and shafts.

Rod Settlement System

Geosense® GEO-XR single point rod settlement system is used to monitor sub-surface settlement or heave of ground.

The system comprises a series of inner steel rods and plastic outer sleeves together with plates when positioned on ground before fill or Borros type anchors when used in boreholes.

The inner steel rod is made from heavy duty 1metre lengths of 25mm outside diameter with a 3/4” BSPM thread with external socket

The outer plastic sleeves in 1metre lengths can be 60mm (2”) or 165 mm (6”) diameter with flush threads so that the inner and outer rod can be extended together.

A circular or square thick steel plate with a 3/4” BSPF socket welded onto it allows the datum plate to be placed and the first inner rod connected. Outer sleeves are placed over the steel rods as filling occurs.

VW Settlement Profiler

The Geosense® Vibrating Wire Settlement Profiler is used for the measurement of subsurface settlement.

Working principle: A vibrating wire sensor is located within a probe that can be pulled through a buried pipe or borehole. The sensor is connected via a liquid-filled tube mounted on a reel which is mounted horizontally at the reservoir location on stable ground. The reel is free to turn as the probe is pulled through the pipe or borehole.

The sensor measures the hydraulic head of liquid between the sensor and the reservoir locations.

VW Anchor Load Cell

Geosense® VWLC 5000 series Vibrating Wire Anchor Load Cells consist of a cylinder of high strength steel with 3 to 6 vibrating wire strain sensors (depending on capacity) mounted parallel to the longitudinal axis arranged equidistant around the circumference which measure the compression of the cylinder under load.

They are manufactured with a centre hole to accommodate anchors, rock bolts and tendons.

With the multi-sensor configuration it is possible to obtain accurate readings under mildly eccentric loading conditions as the sensors are read individually.

VW Anchor Load Cell

Geosense® VWLC 5000 series Vibrating Wire Anchor Load Cells consist of a cylinder of high strength steel with 3 to 6 vibrating wire strain sensors (depending on capacity) mounted parallel to the longitudinal axis arranged equidistant around the circumference which measure the compression of the cylinder under load.

They are manufactured with a centre hole to accommodate anchors, rock bolts and tendons.

With the multi-sensor configuration it is possible to obtain accurate readings under mildly eccentric loading conditions as the sensors are read individually.

Hydraulic Anchor Load Cell

The Geosense® HLC-6000 series Hydraulic Anchor Load Cells consist of a sensitive pressure pad formed by joining two stiff steel discs at their periphery. The void inside the cell is filled with de-aired fluid. When load is applied to the cell the pressure of the inside liquid changes. The changes in pressure correspond directly to the load applied.

Manufactured with a centre hole to accommodate anchors, rock bolts and tendons.

Mounting surfaces should be flat and parallel for optimum performance and the use of very stiff abutment plates and load distribution plates is recommended.

Strain Gauge Anchor Load Cell

The Geosense® SGLC 7000 series load cell consists of a cylinder of high strength steel with a series of electrical resistance strain gauges connected around the periphery as a Wheatstone Bridge that compensates for unevenly distributed loads and provides a single mV/V signal output.

They are manufactured with a centre hole to accommodate anchors, rock bolts and tendons

When the load cell is subjected to load the resistance of the strain gauges will change and the output signal is directly proportional to the applied load. The load cells are compensated for temperature variations often found during normal operating environments and have in-built lightning protection.

Connection to the load cell is via a heavy duty multi-core sheathed cable which can be connected to a direct portable readout, switched terminal units or a data logging system. Mounting surfaces should be flat and parallel for optimum performance and the use of abutment plates and load distribution plates is recommended

VW Solid Load Cell

The Geosense® VWLC 5050 series of Vibrating Wire Load Cells consist of a solid cylinder of high strength steel with 3 vibrating wire strain sensors mounted parallel to the longitudinal axis arranged equidistant around the circumference which measure the compression of the cylinder under load.

With the multi sensor configuration it is possible to obtain accurate readings under mildly eccentric loading conditions as the sensors are read individually

The readings from the individual sensors are averaged and when used in conjunction with a calibration factor, supplied with each cell, allow the applied load to be calculated.

The Geosense® VWLC 5050 series is typically used to measure and monitor compressive load or force in structural members, struts and piles.

Strain Gauge Solid Load Cell

The Geosense® SGLC 7050 series load cell consists of a solid cylinder of high strength stainless steel with a series of electrical resistance strain gauges connected around the periphery as a Wheatstone Bridge that compensates for unevenly distributed loads and provides a single mV/V signal output.

It is most commonly used to measure load acting on piles, struts, arch supports and props.It is most commonly used to measure load acting on piles, struts, arch supports and props.

When the load cell is subjected to load the resistance of the strain gauges will change and the output signal is directly proportional to the applied load. Mounting surfaces should be flat and parallel for optimum performance and the use of loading cap for strut monitoring is recommended.

Connection to the load cell is via a heavy-duty multi-core sheathed cable which can be connected to a direct portable readout, data logging or Wi-SOS 400 system.

Hydraulic Solid Load Cell

The Geosense® HLC-6050 series of Hydraulic Load Cells consist of a sensitive pressure pad formed by joining two stiff steel discs at their periphery. The void inside the cell is filled with de-aired fluid. When load is applied to the cell the pressure of the inside liquid changes. The changes in pressure correspond directly to the load applied.

Mounting surfaces should be flat and parallel for optimum performance and the use of very stiff bearing plates and load distribution plates is recommended.

The Geosense® HLC-6050 series is typically used to measure and monitor compressive load or force in structural members, struts and pile

NATM Pressure Cell

Geosense® NPC-3000 Series NATM Pressure cells are designed to monitor stress of shotcrete in the construction of tunnels, particularly those using the New Austrian Tunnel Method and other underground works. Monitoring of the radial and tangential stresses within shotcrete linings is vital to its success.

Mounting surfaces should be flat and parallel for optimum performance and the use of very stiff bearing plates and load distribution plates is recommended.

The cells are constructed from two stainless steel plates welded around their periphery with the narrow gap between the plates filled with hydraulic fluid.

As the stress increases within shotcrete or concrete the fluid pressure within the cell rises as the plates are squeezed together.

A length of stainless steel tube connects the plates to a pressure transducer (VWDT 5000 or SGT 3000) that converts the pressure to an electrical signal which can be read directly with a MP12 readout or data logged.

Total Earth Pressure Cell

TPC-4000 series Total Earth Pressure cells are designed to measure total pressure (effective stress and pore water pressure) in soils and at the interface between structures and the wall of excavation.

They are constructed from two stainless steel plates, welded around their periphery with the narrow gap between the plates filled with hydraulic fluid.

External pressure on the outside surfaces of the cell squeezes the two plates together creating an internal fluid pressure. A length of stainless steel tube connects the cell to a pressure transducer which converts the fluid pressure into an electrical signal which can be directly readout or transmitted to a data logging system

Models 4010 and 4020 are designed to measure soil pressures on structures. It is fitted with an extra thick back plate on one side which is placed against the structure so as to avoid any warping of the cell. The other side has a thin plate welded to the back plate which provides sensitive measurement of soil pressures.

Push-in Pressure Cell

A Push-in Pressure Cell, also called Spade Cell, is designed to be pushed into the ground where it can measure total earth pressure and pore water pressure within the soil. It can be used as a site investigation tool to determine the in-situ stress state, both vertical and horizontal, depending on the direction of installation. In addition, it can be used to monitor the change in active and passive pressure around retaining structures (diaphragm walls etc) as well as in tunnelling, and other earthworks. Typical installations are in fine grained cohesive soils, including very soft to stiff clays.

Construction consists of two longitudinal stainless steel plates, welded together around their periphery. The annular space between these plates is filled with de-aired glycol. A port and filter for pore water pressure measurement are located on one of the flat sides of the support plate behind the pressure sensitive section of the cell.

The pressure cell and the port for the pore water pressure are connected via stainless steel tubes to two pressure transducers integrated in the cell, typically vibrating wire, or pneumatic, or strain gauged if dynamic measurements are to be performed. A thermistor for temperature measurement is also incorporated.

Flat Jack

Flat jacks are designed to carry out in-situ testing of masonry structures and rock.

The flat jack is constructed from two stainless steel plates welded around their periphery, with the narrow gap between the plates filled with hydraulic fluid. It is inserted into a slot cut into the structure to be monitored and gradually brought up to pressure with a special hydraulic pump.

As stress increases within the structure or rock,the fluid pressure within the cell rises as the plates are squeezed together and it is possible to derive the stresses acting in the structure test area.

A length of stainless steel tube connects the plates to a pressure transducer (VWDT 5000 or SGT 3000) that converts the pressure to an electrical signal which can be read directly with a MP12 readout or data logged.

Embedment Strain Gauge

Geosense® VWS-2100 series vibrating wire embedment strain gauges are designed for direct embedment in concrete.

The strain gauge operates on the principle that a tensioned wire, when plucked, vibrates at its resonant frequency. The square of this frequency is proportional to the strain in the wire.

The gauge consists of two end blocks with a tensioned steel wire between them.

Around the wire is a magnetic coil which when pulsed by a vibrating readout or data logger interface plucks the wire and measures the resultant resonant frequency of vibration

Surface Mount Strain Gauge

Geosense® VWS-2000 series vibrating wire surface strain mount gauges are designed for the long term monitoring of steel or concrete structures. Gauges may be attached to steel structures by arc welding or, using alternative end blocks, bonded or grouted into concrete.

The strain gauge operates on the principle that a tensioned wire, when plucked, vibrates at its resonant frequency. The square of this frequency is proportional to the strain in the wire

The gauge consists of two end blocks with a tensioned steel wire between them. The end blocks can be attached by either arc welding, bonding or groutable anchors to steel or concrete.

Around the wire is a magnetic coil which when pulsed by a vibrating readout or data logger interface plucks the wire and measures the resultant resonant frequency of vibration.

Sister Bar/Rebar

Geosense® VWS-4000 series vibrating wire Sister Bars and Rebar Strain Meters are designed to be embedded in concrete to measure strains due to imposed loads.

The VWS-4000 Sister Bar is installed by tying it alongside an existing length of rebar within the cage. Available in two diameters: 12 and 16mm.

The VWS-4001 Rebar Strain Meter is installed by welding it into the existing rebar cage at a location within the structure where loads can be accurately passed from the concrete into the gauge. Available in various sizes to match the size of the rebar cage into which it is to be welded

Spot Weld Strain Gauge

Geosense® VWS-2020 series vibrating wire strain gauges are designed primarily to measure strains on the surface of steel structures but may also be used on other types of material.

The gauge consists of two end blocks with a tensioned steel wire between them. The end blocks are attached to stainless steel tabs which may be attached to steel structures by spot welding or, using alternative end blocks, bonded or grouted.

The strain gauge operates on the principle that a tensioned wire, when plucked, vibrates at its resonant frequency. The square of this frequency is proportional to the strain in the wire

Around the wire is a magnetic coil which when pulsed by a vibrating wire readout or data logger interface plucks the wire and measures the resultant resonant frequency of vibration.

Strand Anchor Strain Gauge

Geosense® VWS-2800 vibrating wire strain gauge is designed for the monitoring of strain along stranded anchors.

The gauge is housed within a robust cover to de-bond it from the surrounding grout and the specially-designed mounting blocks ensure the strain is transferred from the strand to the gauge. The low profile design means that multiple sensors can be installed along the bonded length of strand anchors.

The strain gauge operates on the principle that a tensioned wire, when plucked, vibrates at its resonant frequency. The square of this frequency is proportional to the strain in the wire.

The gauge consists of two end blocks with a tensioned steel wire between them. The end blocks can be attached by either arc welding, bonding or groutable anchors to steel or concrete.

VW Weir Monitor

The Geosense® VWM-2000 vibrating wire precision water level monitor utilises a vented vibrating wire force transducer in combination with a cylindrical weight suspended from it to monitor water levels.

The vibrating wire transducer is vented to atmosphere so that any atmospheric changes are automatically compensated.

The transducer and weight are contained within a PVC slotted pipe which can be located within the weir or tank as necessary and the vent tube is terminated within a moisture trap. Periodic change of the desiccant is required

The cylindrical weight is partially suspended in the water level being monitored and as the water level changes the force on the transducer by the cylinder alters which in turn alters the tension of the vibrating wire.

As with all vibrating wire sensors, the output is frequency and therefore not affected by changes of cable resistance and therefore extremely long cable lengths are possible.

V-Notch Weirs & Tanks

Geosense® V-Notch Weirs and Tanks are used to measure seepage water flows in open streams, channels or tanks and are used mainly as part of Dam Safety Monitoring programs.

Made from high quality stainless steel or other corrosion & abrasion resistant materials they are available in a wide range of sizes and angles to suit project requirements.

The V-notch weir uses the principle of flow of water over a triangular or rectangular notched weir plate. For a given profile size and shape, discharge is a function of the head of water at the weir.

EchoSounder

The Geosense® EchoSounder sets new standards in ultra compact sonar technology and acts as a stand-alone altimeter, providing accurate height off the seabed and other subsea distance measurements.

The EchoSounder is a robust professional offshore or freshwater altimeter, built to the highest quality standards. It is optimised for operation on small vehicles, as it is both compact and very lightweight in water.

A wide range of voltage inputs is available to suit individual projects.

Ultrasonic Flow Monitor

The Geosense® Ultrasonic Flow Monitor is a compact, easy to use system for measuring the velocity and depth of water in rivers and streams, open drainage channels and large pipes. It is suitable for use in a wide range of water qualities ranging from sewerage and waste water to clean streams, potable water, and even sea water. The instrument measures forward and reverse flow conditions and may be programmed to compute flow rate and total flow in pipes and open channels.

The newest model, consists of a new depth sensor and a new velocity algorithm in addition to all the previous features. The ultrasonic transducer assembly is profiled to reduce flow disturbance and signal electronics. It is designed to be placed at (or near) the bottom of the water channel for upstream measurement. A single cable connects the instrument to a 12V DC power source.

Staff Gauges

Geosense® Staff Gauges are used mainly to measure the water levels in dam reservoirs or in combination with V-notch weirs to monitor seepage or entry flows as part of Dam Safety Monitoring programs

Made from 150mm wide x 4mm thick lightweight glass reinforced plastic (GRP) they offer higher durability and longer life than products made from cast iron or other metals.

They are provided with red datum numerals for easy surveying and the numerals can either be on separate boards or printed directly onto the board itself.

Evaporation Pan

Evaporation Pans are used for applications where evaporation of open water areas must be monitored and measured, such as reservoirs.

It is simple to install and easy to use. Accurate evaporation readings are obtained from the contained area of the pan which are later correlated against the larger body of water through specific calculations.

The 4-20 mA transducer is securely enclosed and connects to a data logger or readout. The pan is constructed of stainless steel and is transported on its own wooden pallet for placement in the field. It can be easily disassembled for storage or transport to other job sites.