The PPS71 Elite Geothermal Tools are designed for extreme, high temperature downhole conditions. The robust electronics combined with vacuum flask technology allow these products to perform at 350 °C (662 °F) continuously, for four hours. The tool measures pressure, temperature, casing collar location, flow profile and gamma rays, and can be configured as either a memory tool or surface read out tool (SRO) tool. The measurements are done with a highly accurate silicon-sapphire (piezo) transducer, a fast response resistance temperature detector (RTD), either a continuous or fullbore spinner flowmeter, magnetic CCL and sensitive gamma ray crystal which detects incoming gamma rays from the formation.



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 (< 20 RPS)± 0.5 revolution
Accuracy (> 20 RPS)± 0.25 revolution
Resolution (< 20 RPS)0.5 RPS
Resolution (> 20 RPS)0.1 RPS
Gamma Sensor TypeCrystal, NaI
SensitivityTypically 1.7 CPS/API
PDF Icon  PPS71 Elite Brochure
PDF Icon  PPS71 Elite Data Sheet

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