Uplift pressure measuring device consists of a perforated/non-perforated pipe of 50 mm dia of adequate strength. The pipe is inserted in a drilled hole in the foundation from the instrumentation gallery to the required depth. To the other end of the pipe in the gallery model EPU-20Vuplift pressure sensor is connected.
Model EPU-20V (MTI.EWS.ER.M-EPU20V) uplift pressure sensor incorporates the latest vibrating wire technology to provide remote digital readout of fluid and/or water pressure in standpipes, bore holes and embankments. It is similar to the model EPP-30V piezometer except that instead of the special filter, a 25 mm BSP adaptor is provided for the pipe connection. The water oozing through internal pores or seams in rock formations of dam foundations, mass concrete /foundation soil of structures, reclaimed land soil etc. percolates upward through the pipe to the sensor
Piezometer Model EPU-20V
• Sensor Type: Vibrating wire
• Range (MPa): 0.2, 0.35, 0.5, 1.0, specify
• Accuracy : ± 0.25 % fs normal ± 0.1 % fs optional
• Non linearity: ± 0.5 % fs
• Resolution: 0.025% fs
• Over range limit: 150 % of range
• Temperature limit: -20°C to 80°C
• Thermistor: YSI 44005 or equivalent
• Dimension (dia x L): 42 x 210 mm
• Key Testing / Calibration:
- Thermal cycling (-20 to +80°C)
- Pressure cycling (2000 cycles), individually temperature compensated, reverse pressure test, individually calibrated providing high accuracy & repeatability
• Key Feature/Advantage: Hermetically sealed with electron beam welding
• Protection (Waterproofing): IP-68, water resistant up to its full range
• Parameter: Uplift pressure
• Non linearity: ± 0.5 % fs