Adhar Instruments & Services Sector 10, Noida, Uttar Pradesh

The water seepage can be monitored using weir which is made of stainless steel in 90° 'V' shape. This can be designed for different size of channel and different flow capacity. The 'V' Notch have marking for measuring flow rate. It is available for 20l/s, 25l/s, 30l/s, 50l/s and 60l/s.

Vibrating wire sensor is designed to measure the water level of reservoir/bore well remotely. It has special arrangement of vent tube to nullify the atmospheric pressure and measure exact water level. The data can be recorded using data recorder or data acquisition system.

Accuracy : ±0.25%FS

Electronic Water level indicator is used to measure the water levels in wells, casagrande porous tube piezometer and stand pipe piezometer.

Type : Water Level Indicator

Application : Controls Water Level

Weight : 10-20kg

Color : Blue, Green, Grey, White, Yellow

Voltage : 110V, 220V

Condition : New

Display Type : Digital

Automatic Grade : Automatic

Power : 1-3kw

Vibrating wire triaxial jointmeters are designed to monitor the relative displacement of two adjacent surfaces in three orthogonal directions. The typical application of triaxial jointmeter is monitoring of movement at constructions joints in concrete dam, tunnels and tanks or masonry structures.

The VW embedment jointmeter is used to monitor movement at joints in mass-concrete structures such as abutments, foundations, and dams.

Range : 50mm and 100mm

Accuracy : ±0.5%FS

Total Pressure cells are designed to measure stress action on plane surface. It measures the combined pressure of effective stress and pore-water pressure. The pressure cells are constructed from two circular stainless steel plates, welded together around their periphery. The annular space between these plates is filled with oil. The cell is connected via a stainless tube to a transducer forming a closed hydraulic system. The stress then converted to a signal and may be remotely read in a portable read out unit or data logger. Typical applications include: Monitoring total pressure exerted on a structure to verify design assumptions. Determining the magnitude, distribution, and orientation of stresses.

Capacity : (Mpa) 1,2,3, 5,10,15

Accuracy : ±0.5%FS

Resolution : ±0.05%FS

Material : Stainless Steel

Operating Temperature : -20 to +80°C

Vibrating wire surface mountable strain gauges are used to measure strain in steel or strain in concrete and masonry structures. Typical applications include: Monitoring structural members of buildings and bridges during and after construction. Monitoring load in struts used to brace deep excavations. Measuring strain in tunnel linings and supports. Monitoring areas of concentrated stress in pipes. Monitoring distribution of load in pile tests. Monitoring cracks in concrete (may require long-base strain gauge).  

Material : Stainless steel

Vibrating wire piezometer is standard piezometer, which can be used in all applications. It is very simple in installation and can be installed at multilevel too. This allows direct grouting using cement, bentonite grout. The application includes: Monitoring pore water pressures to determine safe rates of fill or excavation. Monitoring pore water pressures to determine slope stability. Monitoring the effects of dewatering systems used for excavations. Monitoring the effects of ground improvement systems such as vertical drains and sand drains. Monitoring pore pressures to check the performance of earth fill dams and embankments. Monitoring pore pressures to check containment systems at land fills and tailings dams. Over range : 200% full scale Material : Stainless Steel Diameter : 20mm Temperature Range : -20 to +80°C

Linearity : ±0.5% Full Scale

Embedment strain gauges measure strain in concrete. It can be used in multi directions using rosette to know the direction of strain in mass concrete. Typical applications include: Measuring strains in reinforced concrete and mass concrete. Measuring curing strains. Monitoring for changes in load. Measuring strain in tunnel linings and supports.

Material : Stainless steel

The vibrating wire data recorder is microprocessor based recorder designed to measure most types of commercially available vibrating wire instruments requiring a sweep excitation signal. The recorder is portable, robust, and suitable in harsh environments. It is capable of storing and displaying time and date stamped engineering unit data. The recorder will also simultaneously measure the thermistor which is commonly incorporated in to vibrating wire instruments and display the reading in °C. 12hours in continuous use. Resolution : 0.1 micro second Data Recording Unit : Period, frequency, frequency square, engineering unit. Communication Port : RS 232 Display : 16 characters one line Operating Temperature : -10 to +60°C Temperature Measuring : Thermistor Measurement Cycle : 128 Cycles Memory : EPROM Program Memory & (NVRAM) Data Memory Real Time Clock : RTC is provided for time & date Steaming of Stored Data, Accuracy ± 2 minutes / month

The VW crackmeter is used to monitor movement at joints and cracks in concrete structures or rock. Typical applications include: Monitoring joints for unexpected movement to provide early warning of performance problems Monitoring joints and cracks in structures that may be affected by nearby excavation and construction activities. Monitoring cracks in structures that have experienced seismic activity.

Sensor Material : Stainless Steel

Vibrating wire concrete Pressure cells are used for the measurement of tangential and radial stresses in concrete and shotcrere tunnel linings. The typical application includes: Pressure on and within linings of underground excavations Monitoring of stress distribution within rock

Capacity : (Mpa) 1,2,3, 5,10,15

Accuracy : ±0.5%FS

Resolution : ±0.05%FS

Material : Stainless Steel

Operating Temperature : -20 to +80°C

Uplift pressure meters are installed in foundation gallery of dam to monitor the uplift water pressure acting on foundation. It consists of reducers, T-assembly, cock valves, nipples and Burdon Pressure Gauge. The vibrating wire sensor can also be used at the place of Burdon Pressure gauge, if the data is to be recorded in automatic mode. Accessories: Raiser Pipe : GI of PVC, diameter 50mm length 1m, 2m, 3m. Perforated Section : GI or PVC, diameter 50mm length 1m

Tilt Sensors are used to monitor changes in the tilt of a structure. Such changes may be caused by excavation, tunneling, dewatering, or loading of the structure. Typical applications for tilt sensors include: Monitoring stabilization measures, such as pressure grouting and underpinning. Monitoring structures for the effects of tunneling and excavating. Monitoring the deflection and deformation of retaining walls. Monitoring convergence and other movements in tunnels. Providing early warning of threatening deformations, allowing time for corrective action to be taken.

Temperature sensors are used to monitor the heat of hydration in mass concrete structures. Sensor Type. Vibrating wire temperature sensors offer high accuracy and are convenient when other types of VW sensors are used. Resistance temperature sensors (RTDs or Thermistors) are an economical alternative to the vibrating wire sensor.

Accuracy : ±0.5% FS

Material : Stainless Steel

The tape extensometer is used to detect and monitor changes in the distance between two reference points. Typical applications include: Monitoring convergence of tunnel walls. Monitoring deformations in underground openings. Monitoring displacement of retaining structures, bridge supports, and other structures.

10-position switch cum junction box is suitable for connecting and switching input from up to 10 sensors through ten 4 core input cables to readout unit and to one output cable.

Surface settlement point is made of steel rod having 25mm dia, 250mm length and cross mark on top. The surface settlement points are used to monitor the surface settlement of structures. It is generally installed at the surface of structures using concrete block so that it is in contact with surface which tends to move. The monitoring is done using precise Total Station.

Standpipe piezometers are used to monitor piezometric water levels. Observation wells are used to monitor ground water levels. Water level readings are typically obtained with a water level indicator. Typical applications include: Monitoring pore-water pressure to determine the stability of slopes, embankments, and landfill dykes. Monitoring of ground improvement techniques such as vertical drains, sand drains, and dynamic compaction. Monitoring dewatering schemes for excavations and underground openings. Monitoring seepage and ground water movement in embankments, landfill dykes, and dams. Monitoring water drawdown during pumping tests. Specification Stand pipe Piezometer is made of 50mm dia, 1 meter long perforated section PVC Pipe covered with brash mesh. The 50mm dia 3 meter long raiser pipe is used to achieve the desired depth of piezometer. Suitable coupling is used to join the raiser pipe to each other.

Prism targets are used to monitor the deformation and convergence in underground activities. It has great advantage over bi-reflex target as more precise monitoring, long distance coverage etc. Features Precision ground glass up to 2 arc second Fully compatible with leading manufacturer's Total Stations like Sokkia, Trimble, Topcon, Pentax, Nikon, Stonex etc. Hermitically sealed 62.5mm precise prism

Vertical inclinometer provides accurate profile of lateral deflection in two perpendicular planes. Monitoring slopes and landslides to detect zones of movement and establish whether movement is constant, accelerating, or responding to remedial measures. Monitoring diaphragm walls and sheet piles to check that deflections are within design limits, that struts and anchors are performing as expected, and that adjacent buildings are not affected by ground movements. Monitoring dams, dam abutments, and upstream slopes for movement during and after impoundment. Monitoring the effects of tunneling operations to ensure that adjacent structures are not damaged by ground movements.  

Operating Temperature : -20 to +60°

Optical target (Bi-reflex) is used to monitor the deformations in 3 dimensional at a point. Its application includes convergence monitoring of tunnel, caverns and surface movements in dam. Optical range : 250m with precise Total Station

Accuracy : Measurement in angle : ±0.5mgon

Weight : 0.2Kg

No-Stress -Strain Meter is installed in conjunction with group of strain meters in mass concrete in a special container where no external force is acting on strain gauge embedded in concrete. The data of No Stress-Strain meter is required to evaluate the strain gauge data to find out true strain.

Material : Stainless steel

Mechanical triaxial jointmeter is used to monitor the relative displacement of two adjacent surfaces in three orthogonal directions. The data is being recorded using digital depth gauge manually.

Range : ±10mm, ±25mm, ± 50mm

Accuracy : ±0.2%FS,

Operating Temperature : -10 to +70°C

Reading Tool : Digital Depth Gauge