Systel Geotech India Private Limited

SI-BSM-000 SERIES

Description: BOREHOLE STRESS METER-3.JPG
   
The SI-BSM-000 series are designed to measure stress changes in the elastic  rock & are used in following application –

·         Support Pillars

·         Shafts

·         Mining

·         Tunnel

The stress meter consist a high strength steel proving ring wedged tightly across one diameter of a borehole drilled into the rock. The distortion of the proving ring, caused by changing rock stresses, is measured by means of a vibrating wire.Changes in the rock stress cause changes in the resonant frequency of vibration of the tensioned wire and the two are related by means of calibration data with each stress meter.It is also available for hard rock applications also.The SI-BSM-000 series stress meter are available in three models and provide high sensitivity, very high range and long term stability for extended monitoring period.The design is an improvement of the stress meter developed for the US Bureau of Mines. By re-orienting the vibrating wire to be at 900 with respect to the loading platens, the gage has been given a high initial sensitivity coupled with a virtually unlimited range of increasing stresses. Installation procedures have been modified to permit the gage to be wedged into place at much higher pre-load than hitherto possible. A thermistor can also be attached with the stress meter to monitoring the simultaneous measurement of temperatures.

SPECIFICATIONS

Model
   
SI-BSM-001

(EX-SIZE)
   
SI-BSM-002

(BX-SIZE)
   
SI-BSM-003

(NX-SIZE)

Range in Compression
   
70 MPa
   
70 MPa
   
70 MPa

Range in Tension
   
3 MPa.
   
3 MPa.
   
3 MPa.

Resolution
   
14 to 70 kPa
   
14 to 70 kPa
   
14 to 70 kPa

Temperature Range
   
-200C to =800C
   
-200C to =800C
   
-200C to =800C

Max. Borehole Depth
   
30 meter
   
30 meter
   
30 meter

Borehole Diameter
   
37-39mm.
   
58-61mm.
   
74 to 77mm.

 INSTALLATION TOOL

The stress meter is installed in boreholes upto the depth of 30 meter with help of installation tool/setting tool.  It is used to drive a wedge so that a platen is expanded against the side of borehole. When it is used in soft rock, a sot rock shoe and soft rock platen are used to spread the area of contact. The diamond core drilling is preferable. The boreholes should have their walls smoothed by incorporating a reaming shell in the bit. It can be read using our data logger.

INSTALLATION TOOL ASSEMBLY

Description: BH stress capsule.JPG

ORDER INFORMATION
   
ACCESSORIES

• Model Number
• Installation Depth
• Borehole Size
• Range
• Length of Cable
• Vibrating Wire Readout unit
• Installation Tool

SysTel INDIA Make Casagrande Piezometer Model SI-CP-000 series is reliable than other types. It is useful to measure ground water pressure/ level around a filter. It is suitable for borehole. It is comprises a porous ceramic tube.
Rigid PVC pipe, rubber bushes and dip meter contains level sounder and a marked cable reel for water level monitoring. When it touches to the water surface, makes a electrical contact, a LED is glow and buzzer is making sound. Then water level can be seen from the marked cable and steel scale. The design & installation of Casagrande Piezometer is followed by as per IS code 7356-1,
It is also suitable for heads in embankments, foundation of dams and reservoir, uplift pressure in hill side highways and underground works.  It can be installed in a borehole up to the required depth.
System consists of a low or high air entry value cylindrical ceramic or plastic filter element closed at one end with PVC/Brass/ Rubber stopper.
Casagrande Tip
Outer Diameter.
Inner Diameter.
Length
37 mm
25 mm
60 cm long
Standpipe
OD.
wall thickness
Length
20 mm
1.75 mm
1.5 meter each

SysTel INDIA The Model SI-MLPP-003 Multi-Level Pore Pressure Piezometer is designed to measure pore pressure at different levels in a borehole, embankments, concrete structures, pipe lines, wells etc.
The piezometer is clamped at different positions to a supporting rod which thereafter  inserted into a bore hole of 100 to 150 mm. Intermediate gaps in between the sensor are grouted and space around the sensor is filled with sand.
Our Multilevel Pore Pressure Piezometer incorporate vibrating wire sensor with the resonant frequency of vibration of a tensioned steel wire which is proportional to the strain or tension in the wire. This fundamental relationship is utilized in a variety of configurations for the measurement of pressure. Vibrating wire sensors are well known for their long term stability. The design contributes to the outstanding features and performances :
·   Unprecedented sensitivity
·   Long term stability and reliability
·   Isolation of the sensor from the effects of total stresses acting on the body of the Piezometer
·  Robust and sturdy construction Slim-line design
FEATURES:
·         Accurate, highly sensitive and reliable
·         In-built thermistor and gas discharge tube
·         Extremely stable for long term operations
·         Frequency output for transmission over long distances
·         Suitable for remote reading, scanning and data logging
·         Stainless steel construction
·         Waterproof
ACCESSORIES
SPECIFICATION MODEL SI-PZ-10x
• Ceramic or sintered stainless steel filter
• High air entry filter
• Terminal boxes
• Surge protection
• Splice kits
• Armored cable
Standard Ranges              :               5-200 Ksc
Over Range                        :               2 × rated pressure
Sensitivity                          :               0.1% FS
Accuracy                              :               ±0.5% F.S.
Temp. Range                     :               −20°C to 70°C
Length × Diameter          :               140 × 20.0mm

SysTel INDIA model SI-SMG-001/002 series strain gauges have a unique integral magnet design which incorporates a miniature magnet coil assembly positioned inside a stainless steel tube of diameter 15mm. The same tube has a high tensile strength, heat-treated and tempered steel wire stretched between two end blocks. The wire is sealed in the tube by means of a set of double O-rings. This feature, when compared to conventional externally mounted magnet design has the following advantages:

•     Robust and sturdy construction.
•     High sensitivity and reliability.
•     Long term stability.
•     Easy installation and minimum protection needed after installation.

Externally mounted magnet assembly on the other hand is prone to corrosion as it is made in two halves, which are externally clamped on to the tube. This does not ensure proper sealing at the joint. Thus water can seep and with time cause corrosion on the magnet, resulting in failure. Embedment type strain gauges are provided with built in stainless steel flanges while the groutable and arc weldable type have the same design. By the use of appropriate type of mounting blocks, the same strain gauge can be arc welded on to the steel structures such as tunnel linings and supports or grouted or epoxy bonded on the surface of concrete structures. Provision of gas discharge tube protects the sensor against surge and lightning.
SPECIFICATIONS:
Model
SI-SMG-001
SI-SMG-002
Embedment
SI-SMG-001E
SI-SMG-002E
Groutable
SI-SMG-001G
SI-SMG-002G
Gauge Length
100 mm.
125 mm.
Gauge Factor
1.592x 10-3 µ strain/Hz2
2.487x 10-3 µ strain/Hz2
Range
± 1500 µ strain
Sensitivity
1 µ strain
Material
Stainless Steel
Coil Resistance
140 – 160 Ohm @ 25°C
Cable
1 m.  4 cores shielded.
ACCESSORIES:
1.       5 position rosette for mounting strain gauge at different angles and in different planes.
2.       No-stress container to evaluate strain produced due to factors other than load.
3.       Brackets for arc welding on structures or grouting.

These AC LVDTs are the most economically priced displacement transducers. Housed in stainless steel body, they are a combination of ruggedness and high performance.
Their applications include measurement of displacement and linear position, deflection/ deformation in automated material testing machines, triaxial and consolidation testing machines for soil testing, spring testing machines and automation of textile machinery.
They can be used with many different types of signal conditioners making them very popular with many OEMs. Each transducer is supplied with its factory calibration data.
SysTel India prepares LVDT electronics in many variations to provide analogue output (voltage or
4 to 20 mA), Digital Display, position control and / or computerized measurement.
FEATURES
OPTIONS (AT EXTRA COST)
Low priced
22 mm diameter
Stainless Steel housing
Non-linearity as low as 0.25%
Rugged construction
Wide range from ±1 to ± 300mm
Teflon bore guide for reduced transverse play
Spring loaded core rod
Core rod extension
Rod end bearings at both ends
6-core cable
Connector on housing
SPECIFICATIONS
Model
SI-AS-002
SI-AS-005
SI-AS-010
SI-AS-015
SI-AS-020
SI-AS-025
SI-AS-050
SI-AS-075
SI-AS-100
Full Stroke Range (mm.)
± 2
± 5
± 10
± 15
± 20
± 25
± 50
± 75
± 100
Mech. Stroke (mm.)
± 4
± 8
± 15
± 23
± 30
± 35
± 60
± 85
± 110
Body Length mm.
75
93
123
133
167
185
337
443
476
Ourput (mV/V/mm) approximate
50
40
25
17
12
10
5
3.5
2.5
Non-linearity (%FSR)
0.3
0.3
0.3
0.3
0.3
0.3
0.4
0.4
0.4
Winding Type
AC LVDT
Housing Diameter
22 mm. ± 0.25
Excitation
1 to 10 Vrms., 2 KHz.
Core rod diameter
6 to 6.25 mm.
Temp. Co-efficient (% FSR)
Zero: < 0.01% fsr per deg C
Output: < 0.025% fsr per deg C
Allowable Ambient Temperature
Up to 60 deg Celcius
Cable
4-core, shielded, PVC insulated, 3-meter long
Note
Sensitivity and Non-linearity is specified at Excitation frequency of 2 kHz.
 

RE offers electronic extensometer REE-2 to measure material extension with a resolution of one micron. Strain guage type extensometer to be used up to elastic limit to determine important parameters like 0.1% to 0.5 proof Stress
and Young’s Modulus.

SPECIFICATIONS

• Gauge length
• 25mm & 50 mm
• Maximum Extension
• 2mm
• Resofution
• 1 micron
• Specimen Diameter
• 0.5 to 30 mm
• Specimen Thickness
• up to 30 mm
• Specimen Width
• up to 30mm

SysTel INDIA designed building settlement points are used extensively for measurement of vertical settlement of any concrete/rock structures and buildings affected by nearby excavation and construction activities. This consists of a spherical reference locator with threaded bolt. The reference locater is fixed on a vertical wall or a structure to monitor settlement of any building. The settlement point is pushed inside the epoxy filled hole, using a rotating action, till it is around 54 mm outside the wall surface.
A slot has been provided on the threaded portion of the reference locator to prevent it from being screwed out.

FEATURES

Precise, rugged and low cost
Compact construction
Easy installation

REFLECTIVE TARGET

The reflective target consists of a reflective self-adhesive sticker with a triangular marking as shown in the
figure below. Different sizes are available on request.
Description: Reinforcement Meter.JPG
The standard reflective target as mounted on a structure is shown in the figure above. It is also available in a circular shape on request. It can also be provided with a central hole if specifically requested.

INTRODUCTION

Bireflex/Reflective targets are designed to suit wide surveying applications. The main field of application has been convergence measuring in tunnel construction. Typical areas of application are tunnel and underground construction, stabilization of sliding slopes, bridge construction and building construction as well as dam observation.

DESCRIPTION

The bireflex target consists of reflector mounted on a robust frame. The target has reflectors on both  the sides  and is mounted on a universal joint such that it can be oriented in any direction as required.The target has a small centre hole  to allow precise targeting.
Unlike our standard reflecting target marks, the reflective film of this device can be optimally adjusted to the target by means of the tiltable foil carrier that can be rotated freely around two axes. Thus, losses of reflection and inaccuracies arising through obliquely incident EDM rays can be avoided. Precise and deliberately heavy bearing support of the film/prism carrier prevents accidental tilting and makes it nearly impossible.

FEATURES

•     The signal-yellow coloring is ideal for the fundability of the mark even with adverse lighting conditions.
•     Very long-lasting special-purpose plastic material does not absorb any water and therefore prevents "swelling" of the mark.
•     Reliable clamp-mounting on every 12 mm pin (compatible with WILD devices) by means of a rugged clamping screw.
•     Very well-priced
•     Precise, rugged, interchangeable and  low cost
•      Compact  construct ion Easy  installation
•     Robust   frame and bolts with  firm grip
•     Precise surveying application where  total  stations are used

Inclinometer casing is a special grooved tube, generally installed into a drillhole, used in conjunction with inclinometer system to determine sub-surface ground or horizontal soil movements.
The inclinometer casing performs the following main functions:
 it reflects deformations of soil or rock into which it is installed or in structures to which it is attached;
·         it provides a precise casing for the operation of the inclinometer probe in the determination of inclination changes;
·         its internal grooves provide orientation reference for the inclinometer probe.
·         Inclinometer casing is produced in different materials: aluminium, fiberglass and plastic (ABS acrylonitrile-Butadiene-Styrene).
APPLICATION
·         Monitoring of lateral earth movements in landslide areas
·         Detecting the shear planes in earthfill dams
·         Measuring of stability during site investigations
·         Deflection of retaining walls and piles under loads
·         Horizontal inclinometers are used to control settlement in foundations or embankments
ACCESSORIES & COMPENENTS
Lockable top cap
Description: INCLINOMETER-1.JPGLockable protective cap with point to assist in topographical surveying to define and check position of borehole. It also provides temporary fixing for S1CSU10000 pulley and cable stop during inclinometer measurements
Pulley and cable stop
Fixed to the top of the casing and used to hold the cable during measurements
Casing clamp
Used to hold the casing string during installation
Bottom grout valve
Permits grouting through the casing
Removable injection valve
Fits to drill rods and used in conjunction with the bottom grout valve
Casing Assembly Kit
Suitable for 100 m of casing and includes all consumable materials. Rivets, sealing tape and adhesive cement
Tail sheave and pulley
Used in horizontal inclinometer installations to retrieve the inclinometer probe
Magnetic settlement target
Fixed externally to ABS casing and grouted into the borehole, the targets will allow settlement to be determined
TECHNICAL SPECIFICATIONS
INCLINOMTER CASING
0S111007500
0S111005400
0S121007500
0S131006000 (*)
MATERIAL
Aluminium
Aluminium
Fiberglass
ABS
A Inner diameter
76.1 mm
49.0 mm
74.0 mm
60.0 mm
B Groove outer diameter
86.4 mm
58.0 mm
87.0 mm
71.0 mm
C Thickness
2.2 mm
2.0 mm
2.5 mm
3.5 mm
D Groove inner diameter
82.0 mm
54.0 mm
82.0 mm
64.0 mm
Spiral
< 1°/3m
< 1°/3m
< 1°/3m
< 0.6°/3m
Crop ends length
3.000 mm
3.000 mm
3.000 mm
3.000 mm
Weight
1.5 Kg/m
0.96 Kg/m
0.9 Kg/m
0.8 Kg/m
Borehole drilling diameter
101 mm
76 mm
101 mm
86 mm

67.0 mm
B Outer diameter
92.0 mm
62.6 mm
92.5 mm
77.0 mm
C Thickness
2.2 mm
1.7 mm
2.5 mm
5.0 mm
D Groove inner diameter
87.6 mm
59.2 mm
87.5 mm
71.5 mm
Length
300 mm
300 mm
300 mm
200 mm
Weight
0.5 Kg
0.25 Kg
0.3 Kg
0.2 Kg
Material
Aluminium
Aluminium
Fiberglass
ABS