Quartz Downhole Pressure Gauge zPas-20M

The downhole quartz pressure gauge zPas-20M measures and records pressure and temperature along the wellbore and their variation in time at any point in a wide range of pressure transient analyses, such as recording PBU and PFO curves, pressure code testing, etc. The gauge performs fast temperature measurements and can locate gas, oil and water contacts in the well, among other applications.



Name zPas-20M
Type Quartz
Range 60 MPa (8700 psi)
Accuracy ± 0.18%
Resolution 20 Pa (0.003 psi)
Drift 0.1 % / year
Temperature Range 150 °С (300 °F)
Temperature Accuracy ± 0.1 °С (32.2 °F)
Temperature Resolution 0.001 °С (32.0 °F)
Max Sampling Rate 1 s – 18 hrs/per sample
(0.1s – 1.8hrs/per sample optional)
Memory Capacity 2,000,000 data sets (4 million datasets optional)
Number of cycle 16
Continuous operation time Till 2 month
Power Source Lithium Battery Pack
Communication USB
Diameter 28 mm (1.1 inch)
Overall Length 365 mm (14.4 inch)