Loading... Please wait...


High Temperature Piezometer (VW) | Model 4500HT Series

  • Model 4500HT High Temperature Piezometer.
  • Model 4500HT High Temperature Piezometer, shown with TEC cable (coiled, pre-installed configuration).
  • Model 4500HT used for monitoring pressures and temperatures in oil recovery applications.
Model 4500HT Series

The 4500HT Series High Temperature Piezometers are designed for monitoring downhole pressures and temperatures in oil recovery systems and geothermal applications, where the temperature may be as high as 250°C. These sensors are supplied with either mineral insulated cables, or with tubular encapsulated cables (TEC) both of which are sheathed inside a stainless steel tube.


Standard Ranges¹
350, 700 kPa; 1, 2, 3, 5, 7.5, 10, 20, 35, 50, 75, 100 MPa
Over Range
1.5 × rated pressure
0.025% F.S. (minimum)
±0.1% F.S.
<0.5% F.S. (±0.1% F.S. optional)
Temperature Range
0°C to +250°C
Length × Diameter²
191 × 19 mm (−100 to 700 kPa; 1, 2, 3, 5, 7.5, 10 MPa)

¹Piezometers with a range of 350 kPa and higher are capable of reading negative pressures to −100 kPa. Please contact GEOKON for more information. Other ranges available on request.

²Please contact GEOKON for dimensions of ranges higher than 10 MPa.

*Please Note: All GEOKON vibrating wire piezometers include tripolar plasma surge arrestors to protect the sensor coils from possible lightning damage. Semiconductor piezometers are also available (see 3400 Series).

Please Note: GEOKON maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice. Various instruments are discontinued over time and replaced with new, updated models.