Encardio-Rite - Products

Model ELC-30S Resistive Strain Gage Type Center Hole/
Anchor Bolt Load Cell

ELC-30S is a resistive strain gage type center hole load cell used to determine load in rock bolts, tieback anchors, etc. It comprises of a cylinder of high strength steel with eight 350 Ohm resistance strain gages, wired to form a 700 Ohm bridge. To minimize the effect of uneven and eccentric loading, the eight gages are mounted around the circumference at 45° to each other. The load cell is hermetically sealed by electron beam welding making it immune to ingress of water and to most corrosive environments.

Specifications:
Range (kN)/ID mm)	200/40, 500/52, 1000/78, 1000/105, 1500/85, 1500/ 130, 2000/105, 2000/155, 3500/85, 5000/202, specify
Over range capacity	150 %
Calibration accuracy	0.25 % fs
Non-linearity	± 1 % fs
Output	2 mV/V ± 10%
Excitation	10 V DC (max. 20 V DC)
Temperature limit	-10 to 55° C
Cable connection	Six pin glass to metal seal

Model ELC-32V Vibrating Wire Center Hole/Anchor Bolt Load Cell

Model ELC-32V is vibrating wire type center hole load cell used to determine load in rock bolts, tieback anchors, etc. It comprises of a cylinder of high strength martensitic stainless steel with three vibrating wire strain gages mounted at 120° to each other to minimize the effect of uneven and eccentric loading. To determine the load, the average of three readings is taken. Load cell with six vibrating wire strain gages and nine core cable is available on request.

Solid load cell for stress measurement in tunnel supports and struts is also available on request.

Specifications:

Range (kN)/ID mm) 250/27, 500/52, 1000/78, 1500/102, 2000/127, 2000/152, 3500/202, 5000/202, specify (solid load cell also available on request)

Over range capacity
150 %

Calibration accuracy
0.25 % fs

Non-linearity
± 1 % fs

Temperature limit -10 to 80° C

Thermistor YSI 44005 or equivalent

Cable connection
Six-core shielded 5 m long; specify

Model ELC-210S Strain Gage Type Compression Load cell

ELC-210S is a resistive strain gage type load cell designed to measure compressive load or axial forces. The load cell has great resistance to extraneous forces. This increases the fatigue life, permits less stringent mounting alignment and reduces the possibility of reading error. The load cell is protected against dust, moisture and adverse environmental conditions.

Specifications:
Range (kN)	1000, 1500, 2000, 3500
Rated Output	1.5 mV/V ± 10 %
Enclosure	IP-68, electron beam welded under a vacuum of 1/1000 Torr
Cable	Four-core shielded 2 m long; specify
Other specifications same as ELC-30S

Model ELC-150S-H Strain Gage Type Compression Load Cell

ELC-150S-H is a resistive strain gage type load cell designed to measure large compressive load or axial forces. The load cell has extensive use in pile testing. Like ELC-210S, this load cell also has great resistance to extraneous forces and is protected against dust, moisture and adverse environmental conditions.

Specifications:
Range (kN)	5000, 6000, & 7500
Over range capacity	120 % fs with a maximum upto 8000 kN
Rated output	1.5 mV/V ± 10 %
Cable	Four-core shielded 5 m long; specify
Other specifications same as ELC-30S

Model ELC-30M Hydraulic Center Hole Load Cell

ELC-30M is a precision engineered hydraulic center hole load cell, specially designed for civil engineering application. It is fluid filled and is constructed from stainless steel. The pressure in the load cell is measured by either a manometer or a vibrating wire pressure transducer.

Specifications:
Range (kN)/ID (mm)	250/35, 500/52, 750/78, 1000/105, 1500/105, 2000/130
Over range capacity	120 % fs
Resolution	100 division fs
Temperature limit	- 10 to 55° C