Aimil Ltd.

Piezometer type	Vibrating wire
Application	Structural Monitoring
Material	Stainless Steal (Saline protection coating on request)
Brand	Aimil
Model	Vibrating Wire Piezometer
Dimension	20 mm / 150mm length
Sensor	Vibrating Wire

The Vibrating Wire Piezometers designed for accurate and long term measurement of pore water pressures in fully or partially saturated soil and rock. This is particularly useful in estimating slope stability, safe placement rate of fill or excavation, design and build for lateral or uplift pressures or buoyancy, monitoring the performance of earth-fill dams and embankments, seepage and verify models of flow, monitor surface water run-off, water levels at contaminated sites etc.

Application: Construction Control and Stability of Dams and Embankments.

Sensor Type	Accelerometer
Measuring Range	±10°
Resolution	0.01 Degree
Brand	Aimil
Accuracy	+- 0.02
Country of Origin	Made in India
Applied Sensor	1-accelerometer
Range	+- 10 Degree , Connector = 5 pin

Portable Tiltmeter based on Accelerometer is designed in such a way that the effectof vibration is nil on this system. It can be used very effectively to monitor the overalltilt of a structure. One unit can monitor several points using number of tilt plates.

Pendulum Type	Hanging Pendulum
Brand	Aimil
Application	Geotechnical
Accuracy	0.1 mm
Country of Origin	Made in India
Resolution	0.01 mm
Output	Analog output 4-20 mA, Communication RS 485

Normal/Hanging pendulum is used in monitoring of deflection of dam.

Applications:The Hanging Pendulum monitors the horizontal movements. Its specific applications are as follows:

• To measure displacements in dams, dam foundations and abutments
• To determine the structural and foundation movement of tall buildings

Pendulum Type	Inverted Pendulum
Usage/Application	Monitoring the deflection of the structures
Brand	Aimil
Accuracy	0.1 mm
Country of Origin	Made in India
Measuring Range	+- 75 mm (direct) / +- 50 mm (inverted)
Resolution	0.01 mm
Table Size	625 mm x 625 mm

Inverted pendulum is used for measurement of the displacement between the Dam base and rock foundation of the Dam foundation

Applications:The Inverted Pendulum monitors the horizontal movement. Its specific applications are as follows:• To measure displacements in dams, dam foundations and abutments• To determine the structural and foundation movements of the tallbuildings.

Material	Stainless Steel
Resolution	0.01 mm
Accuracy Class	+/- 0.5 mm or better
Brand	Aimil
Country of Origin	Made in India
Type	Vibrating Wire
Sensor	displacement sensor
Range	0 to 50 mm / 100 mm (higher ranges on request)
Accuracy	+- 0.1% FS
Extension rods	Glass Fibre or SS

Bore Hole Extensometer is used for measuring and monitoring of rock and soil movements in dams underground activities, slope stability etc.
The single rod extensometer employs a rod, anchored at one end of a drill hole, passing into a reference tube fixed in the hole collar. Relative movement between the end anchor and the reference tube is measured witheither a dial depth gauge or an electrical transducer, inserted through the reference tube, registering on to the free end of the rod. A range adjustment screw fitted to the end of the rod extends the reading range beyond that of the dial gauge. Multiple rod installations monitor displacements at various depths using rods of varying lengths. Several single rod units may be installed in close proximity in drillholes of smaller diameter. Alternatively, severalrods may be installed side by side in a single larger hole. Each rod is individually isolated by a close fitting plastic sleeve. The complete assembly is grouted in place, fixing the anchors to the rock or soil but allowing free movement of each rod within its sleeve. A multipoint reference housing receives all rods from one drill holeinstallation. Facilities are available for manual or remote readout. A visual alarm system to give warnings of excessive movements is also available, which can also be used for indicating when a reading is to be taken. Rod extensometer units can be surface mounted to measure displacements across tension cracks or joints or can beburied in fill or cast in concrete.

Sensor Type	Vibrating wire
Brand	Aimil
Country of Origin	Made in India
Range	3000 mu strain
Sensitivity	1 mu strain
Maximum f x l (mm)	26 x 1400 ( for 12 mm f nominal-standard) & 30 x 1400 (for 16 mm f nominal-standard)
Temperature limit	-10 Degree to 80 Degree C

Vibrating Wire Sister Bar is used to measure strain in concrete structures such aspiles, diaphragm/slurry walls, bridge abutments, tunnel lining, dams,foundations, etc. It consists of a hollow bar with vibrating wire strain gagemounted co-axially inside. The hollow bar is extended on the two sides with12mm Φ reinforced bars.

Sister bar strain meter is also available with 16 mm Φ reinforced bar option.

Instrument Type	Pressure Cell
Usage/Application	Structural Monitoring
Accuracy	+- 0.5 % FS
Brand	Aimil
Country of Origin	Made in India
Range	0.5 MPa to 15 MPa (higher / lower ranges on request)
Over Range Limit	150% of Range
Temperature Limit	- 10o to + 60 DegreeC

Pressure cells are used for measurement and control of pressure/ stress distribution with in embankment and dams and also used in measurement of contact pressure on retaining walls /diaphragm walls, piers and abutments and linings of underground excavations

Applications:The measurement and control of pressure include:• Total pressure and stress distribution within embankment and dams.• Contact pressure on retaining and diaphragm walls, piers and abutments.• Pressure on and within linings of underground excavations.• Stresses in the rock walls of unlined caverns and tunnels.

Prism Type	Mini Prism
Usage/Application	Used to reflect the Electronic Distance Measurement
Type	Prism Reflector
Brand	Aimil
Country of Origin	Made in India
Measuring Range	0.3 m to 600 m
Manufacturing Accuracy	+- 0.1 mm

Prism / Mini Prism target consists of a mini prism mounted on a robust frame, alsomounted on a universal joint it can be oriented in any direction.Mini prism mounted on a swivel bracket this is not interchangeable

Piezometer type	Standpipe
Usage/Application	Industrial
Brand	Aimil
Country of Origin	Made in India
Application	Measuring & Controlling Pore water Pressure
Casagrande Tip	38 mm OD, 25 mm ID, 60 cm long
IS Standard	Ref: Standard IS: 7356 Part I

Casagrande type Porous Tube Piezometers are used for measuring and controlling pore water pressure in soil, rock and to monitor the construction control and stability in embankments, dams and reservoirs. 

Application:
Measurement & control of Water Pressure in Soil & Rock , Construction Control & Stability monitoring of structures, Stability investigations, Hydrological & Environmental Studies and Permeability measurement.

Piezometer type	Standpipe
Application	Industrial
Material	PVC and Brass
Brand	Aimil
Model	AIM 702
Country of Origin	Made in India
Applications	Monitor of pore water pressure and water table in a borehole

The Open Standpipe Piezometer is used for measuring ground water level and it'svariation with time. The Open Standpipe consists of a PVC riser/stand pipe of 50mm OD, 3M in length with socket for jointing.The intake point consists of a PVC stand/riser pipe 1 m long perforated section,duly covered with brass mesh. The Ground water seeps in to this riser/Standpipe through the slotted section, and attains a level equal to ground water. Themeasurement is taken with the help of Electronic water level Indicator.

Application The standpipe piezometers are very simple in construction and accurate in monitoring of pore water pressure and water table in a borehole. The measurement is taken with the help of electronic water level indicator.

Instrument Type	Pressure Gauge
Usage/Application	Industrial
Application	Structural Monitoring
Material	Stainless steel
Brand	Aimil
Accuracy	± 1% FS (0.5% optional)
Country of Origin	Made in India

Uplift Pressure Measuring System to measure  and recording of uplift water pressure acting in foundation /Instrumentation galleries of Concrete/masonary dams. The system uses a Vibrating wire pressure sensor, and it is designed for monitoring of uplift pressure of water in the foundation of Dams. The system is similar to Vibrating Wire Pore pressure meter, except  that instead of filter,a 25 mm BSP adapter is provided for pipe connetion. A perforated/ non perforated pipe is inserted in the bore hole, and on top of this Vibrating Wire type uplift pressure meter is attached through valves & fittings.

Machine Type	Vibrating Wire
Brand	Aimil
Accuracy	± 0.5 % FS
Usage/Application	Industrial
Application Type	Structural Monitoring
Country of Origin	Made in India
Resolution	0.05 mm
Range	± 25 mm

Vibrating wire crack meters are used for measuring and monitoring of opening/closing of structural cracks between structures/buildings, dam blocks, tunnel shaft linings etc.

Applications:Vibrating Wire type crack meter is used for• High Voltage Protection : Gas discharge tube assures lightening and surge protection as optional.• Monitoring of superficial cracks.

Sensor Type	Vibrating Wire
Brand	Aimil Ltd
Country of Origin	Made in India
Range	+- 5 Degree & +- 10 Degree (higher ranges on request)
Accuracy	+- 1 deg FS
Resolution	0.1 Degree

Tilt meter is suitable for monitoring of inclination and vertical rotation in structures. It has a high resolution, rugged in construction and has excellent temperature stability.
Tilt / rotation in structures may be caused due to construction activities such as excavation, tunneling and de-watering that affect the ground which supports structure. Tilt meter data provides early Warning of deformations (tilt / rotation) allowing time for corrective action to be taken or if necessary, for safe evacuation of the area.
 
Application: Tilt Measurement

Beam Type	EL Beam
Brand	Aimil
Country of Origin	Made in India
Sensor	EL (Electrolytic level sensor)
Range	+- 1 Degree / +- 2 Degree / +- 3 Degree
Accuracy	+- 0.1 % FSR
Resolution	1arc seconds (0.005mm/m)

EL Beam Sensor is used to monitor the vertical rotation in structure. The electrolevel beam sensor consists of a precision glass electro level vial mounted in aceramic compound which is itself placed in an adjustable mount. The sensor isinstalled in a beam of length from 1.0 m to 3.0 meter, which is installed on to thestructure.
It is often used to monitor the settlement, heave and deflections in structure.

Parameters Measured	Seepage
Suitable For	Drainage Monitoring
Brand	Aimil
Usage/Application	Water Level Controller
Body Material	Stainless Steel
Country of Origin	Made in India
Range	300/500 mm of wc
Resolution	0.03%
Linearity	+- 0.5% FS

To Monitoring the changes in water levels behind a V-notch weir drainagemonitoring system. The main components is a cylindrical weight suspended from aV. W force transducer. As the water level changes, the changing buoyance force onthe cylinder acts directly on the V.W. transducers, the display is in engg units.

Sensor Type	Vibrating Wire
Operating Principle	Vibrating
Brand	Aimil
Material	Stainless Steel
Country of Origin	Made in India
Accuracy	+- 0.5% FS
Resolution	0.01 % of range
Range	± 25 mm
Temperature Limit	-10 to + 70° C

Vibrating wire joint meters are used for measuring and monitoring of opening/closing of joints between concrete damblocks, tunnel shaft linings etc.

Applications:Vibrating Wire type Jointmeter is used for• Monitoring of movement at joints between concrete dam blocks, tunnel, shaft linings masonary structures andbridge construction.• Monitoring of superficial cracks.

Sensor Type	Vibrating Wire
Operating Principle	Vibrating
Brand	Aimil
Usage/Application	Industrial
Resolution	0.01 mm
Country of Origin	Made in India
Accuracy	+- 0.5% FS
Material	Stainless Steel
Range	± 25 mm
Temperature Limit	- 10 Degree to + 70 Degree C

Vibrating wire tri axial joint meter is used for monitoring of block joint movements (opening/ closing) and constructionjoint movements in the foundation and drainage galleries of dams in XYZ axis.

Application	Dams & Embankments
Output Type	Settlement Gauge
Brand	Aimil
Mounting	Magnetic
Country of Origin	Made in India
Range	+- 30 Degree of vertical
Magnet	Spider/Plate Magnet

Magnetic Settlement System is used for measuring and recording of settlement in the earthen dam, embankment, ground etc.
Applications:The measurement of soil and rock movements include:• Settlement, heave and lateral movement, in the foundations and embankments.• Displacement of retaining walls, bridge piers and abutments.• Movement of natural and cut slopes, quarry and mining excavations.• Subsidence• Relaxation of rock around tunnels and other undergound openings

Inclinometer Type	Digital
Measuring Range	± 30 degrees
Output Signal	Digital
Brand	Aimil
Application	Geotechnical
Resolution	± 10 arc seconds
Sensor	MEMS type (Bi-axial)
Connectivity Type	Wireless connectivity

The digital inclinometer system consists of a traversing type digital Bi-axial tilt sensing probe that is connected to a reelunit kept at borehole top. The reel unit consists of a winding reel that holds the cable and a wireless Bluetooth relayunit that sends the digital probe data to the mobile phone. A rechargeable battery in the reel unit supplies power to thewhole system.
The digital inclinometer probe has a measuring range of ± 30 degrees with a resolution of ± 10 arc seconds. The probeuses a 24 bit ADC that measures the MEMS sensor output with a resolution of over 1 million counts. An embeddedprocessor in the probe provides a digital output that gives the horizontal displacement value directly in desiredengineering units.

Applications• Determination of lateral deformation/ horizontal movement and deformation of earth works or structure• Measurement of magnitude of tilt or inclination and its variation with time in structures like diaphragm/retainingwalls, piles etc.

Inclinometer Type	MEMS
Measuring Range	± 15°
Resolution	± 0.05 mm/meter (5 arc second)
Accuracy	± 0.1% fs
Brand	Aimil
Application	Geotechnical
Sensor	MEMS Type / Bi-Axial
Country of Origin	Made in India

MEMS Vertical in-place inclinometer is used to measure lateral movement of earthworks or structures. It provides significantquantitative data on magnitude of inclination or tilt of a foundation, embankment or slope and its variations with time. It also provides the pattern of deformation, zones of potential danger and effectiveness of construction control measures undertaken. Its data logging and realtime monitoring feature helps to provide early warning in case of failures.

Gauge Type	Wire
Gauge Resistance	140-160 Ω @ 25⁰ C.
Resolution	1 micro strain
Material	Stainless steel
Brand	Aimil
Range	3000 μ strain, ( +/- 1500 μ strain)
Country of Origin	Made in India
Temperature Limit	- 10 Degree to +70 Degree C

Vibrating Wire Strain Gauge Embedment Type is used for measurement of internal strain in concrete by embeding the structure in single of multi axis configruation. Each gauge contains a high tensile steel wire inn tension between two end flanges and enclosed in steel tube. A plucking coil is positioned at the centre of the tube  and in close proximity to the wire. A plucking coil positioned at the centre of the tube and inclose proximity tothe wire. When the strain gauges are embedded in the concrete the strain resulting from the stresses developed in the concrete alers the natural frequency of oscillation of the wire. The strainin concrete is proportional to the squarre of the frequency of oscillation of the wire, and to the gauge thus provided a sensitive system for measuring internal strains. 

Prism Type	Reflector Sheet
Brand	Aimil
Material	Cast Iron
Usage/Application	Survey
Country of Origin	Made in India
Measuring Range	1m to 140 m
Manufacturing Accuracy	+- 0.1 mm

Used extensively for measurement of deformation during tunneling, cut/cover construction, Structures and Slopes monitoring. Reflector support is plastic mounted on universal joint with reflective foil onboth sides

Gauge Type	Wire
Material	Stainless Steel
Resolution	1 micro strain
Gage Length	125 mm
Brand	Aimil
Range	+-1500 micro strains
Country of Origin	Made in India
Temperature Limit	- 10 Degree to +70 Degree C

Vibrating wire surface mounted type strain gauges are used for monitoring strain on the surface of metal / concrete.

Applications :• For Strain measurement on metal or concrete surface•Test Piling Instrumentation• STRUT Monitoring – UG Metro (Launching./Retrieval Shafts• Penstock Monitoring in Hydro Power projects

Capacity	350 Ton
Material	Stainless Steel
Application	Structural Monitoring
Features	Hermetically Sealed
Temperature Effect on Zero	+/-0.0020% FS/DegC
Temperature Effect on Output	+/-0.0015% FS/DegC
Zero balance	+/- 1% FS
Maximum Safe Overload	150% FS
Recommended Excitation Voltage	5 to 15V DC
Insulation resistance at 50V DC	>= 1000 M Ohm
Compensated Temperature Range	-10 to +40 Deg C
Operating Temperature Range	-20 to +70 Deg C

Vibrating Wire Centre Hole Load Cell are used for measurement and control of loads, in Rock bolts, tiebacks anchors, foundation anchors tunnel supports and in prestressing of concrete "presstressed girdars" used for Bridge & elevated construction. The VW Load cells consists a set of 3 or 6 vibraing wire gauges ,mounted parallel to each other, equally spaced in a ring in an "alloy steel cylinder". The method of construction results in a very robust instrument suitable for use where high perforamnce, ongevity and mechanical strength are of prime importance. The change in load acting on the load cell is proportional to the difference of the squarred frequency of vibration for the corrosponding load. The reading are taken with the help of a Portable digital raedout unit, aso suitable for remote monitoring.
 
Application: load in rock bolts, tiebacks, foundation anchors and tunnel support,tension in cable anchors and multistrand tendon anchors.