Perfect for high temperature testing

PPS71 Geothermal Tools are designed for extreme, high temperature downhole conditions. The robust electronics combined with vacuum flask technology allow this product to perform at 350 °C (662 °F) continuously, for four hours.

The SRO Box and Portable Box are designed for PPS SRO (Surface Read-Out) gauges to complete wireline field operations or operation monitoring during PDMS (permanent downhole monitoring system) field installation.


  • Steam Injection Profile Logging
  • Geothermal Well Test
  • Real-time Pressure Build-up Tests
  • Real-time Pressure and Temperature Gradients
  • Tubing and Casing Leak Detection
  • Fluid Production/Injection Profiles

PPS26 Surface Box PPS36 DepthWatcher

By combining the downhole measurements with PPS’s DepthWatcher (PPS36), a depth versus time recorder, customers have the capability to create synchronized profile logs. Customers can generate these logs using SmartLog, PPS’s proprietary software, which creates temperature and pressure profiles based on depth that can be easily opened in any commercial logging software, as all files are in the ASCII data format.



Pressure Sensor TypeSilicon Sapphire
Pressure Range5K psi | 10K psi
Accuracy± 0.03% FS
Resolution0.0003% FS
Temperature Sensor TypeRTD (Pt1,000; 4-wire)
Temperature Range300 °C (572 °F) | 350 °C (662 °F)
Accuracy± 0.5 °C
Resolution0.01 °C
Flow Profile Sensor TypeReed Switch/magnetic
Spinner Range5 – 7,000 RPM
Accuracy± 0.25 or 0.5 revolution
Resolution0.1 or 0.5 RPS
Gamma Sensor TypeCrystal, NaI
Sensitivity1 CPS/API
PDF Icon  PPS71 Brochure
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Depth Accuracy0.3 ft (0.1-m)
DisplayLCD graphic display (320 x 240)
Memory48 MBytes
Power Input Voltage6 - 28 VDC, 200 mA at 12VDC
2 or 4 D size lithium battery cells
Sampling Rate0.1 second to 1.8 hours
External Channels3 × 4 - 20mA
Depth AlarmUp to 8 with a close to surface alarm
Speed AlarmOne
Tension AlarmOne
Dimensions4.30” (H) × 7.90” (W) × 9.10” (L)
Weight8 lbs
Operation Temperature-20 to 70 °C
PPS36 Specifications (Rev. 01, 2010-10-21)
PDF Icon  PPS36 Technical Sheet
For more information please Email: