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TPC Total Pressure Cell

HIGH PRESSURE RANGE

VW, ELECTRICAL PNEUMATIC OR FIBER OPTIC

EASY INSTALLATION & OPERATION

The rugged stainless steel construction of the TPC makes it ideal to measure stress and pressure in harsh environments.

Description

The TPC cells consist of a sealed distribution pad, composed of two plates welded together around the periphery and filled with de-aired oil. The pad is connected via a length of steel tube to a pressure transducer. Variation in oil pressure resulting from load changes acting on the pad are sensed by the transducer.

The TPC is fitted with a circular or rectangular pad, the latter being designed for measurement or tangential and radial stresses in shortcrete tunnel linings. The stiffness of the TPC is high, enabling its embedment in soil or in concrete. A groove on both sides of the pad increases its flexibility while reducing sensitivity to stress in directions other than normal to the pad face. The concrete stress cell may be fitted with a repressurization tube to restore contact between the pad and the concrete after curing of the latter.

The TPC is fitted with eyelets, to simplify installation, and with a built-in thermistor allowing temperature reading.

Specifications
   

Range of vibrating wire transducer

200, 350, 500, 750, 1000, 1500, 2000, 3000, 5000, 7000, 10 000, 20 000, 35 000 kPa

Overload

 

Construction

 

Material

 

Dimensions of distribution pad

 

   Thickness

6.3 mm

   Circular cell diameter1

230 mm

   Rectangular cell1

100 x 200 mm, 150 x 250 mm, 200 x 300 mm

PRESSURE TRANSDUCER

VIBRATING WIRE

PNEUMATIC

ELECTRICAL

FIBER OPTIC

Pressure range

0-35 000 kP

0-3500 kPa

0-20 000 kPa

0-20 000 kPa

Accuracy2

±0.5% F.S.

±0.25% F.S.

±0.25% F.S.

±0.25% F.S.

Resolution

0.025% F.S. (min)

Depends on Pressure gauge

0.01% F.S.

0.01% F.S.

Thermistor 3kΩ3 (t° range: -20 to 80°C)

Included

Optional

Electrical surge protection

Included

Readout unit

MB-3TL

PR-20D

FOR-1, UMI

Data acquisition system

SENSLOG

SENSLOG

SENSLOG

FODL

Cable

IRC-41A, IRC-390, CFO-9RF, CFO-3STD

1 Other dimensions available upon request.
2 Calibrated accuracy of the pressure transducer. (+/-0.1%FS with polynomial regression for vibrating wire) 
3 See model TH-T.

 

Ordering Info

Please specify:

  • Model and pressure range
  • Type of pressure transducer
  • Length of electrical cable or tubing
  • Length of repressurization tube (1.2 m standard)

Ordering information:

  • Readout instruments
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