The TORNADO31 logger is a wellhead digital pressure and temperature monitoring instrument. The application of radio transmission allows operators to receive real time data which is stored in its memory chip. Pressure and temperature can also be directly read from the LCD (liquid crystal display). The intrinsically safe design permits the logger to be used in critical environments.

Specifications
Sensor Type Silicon-Sapphire
Service Sour Service (available upon request)
Metrology–Pressure
Drift–psi/yr <3
Accuracy–psi full scale ± 0.03%
Resolution–psi 0.0003%
Range–psi Up to 15 kpsi
Metrology–Temperature
Rating–°C -40 (-40 °F) to 80 (176 °F)
Accuracy–°C ± 0.5
Resolution–°C 0.01

Characteristics
Power Source 2 D lithium cells Up to one year usage at 1 second sampling rate
Display Mode LCD
Data Set Time/Pressure/Temperature
Memory Capacity 1,000,000 data sets standard
Data Receiving Mode Wireless (915 MHz, ISM)
Wireless Transmission Distance 328 ’ (100 m)
Transmission Power + 10 dbm
Outside Diameter of
Indicator Dial 4.625” (117.48-mm)
Overall Length 10” (254-mm)
Work Mode MRO / SRO
Sample Rate 1 sec to 18 hours per sample
Connection 1/2” NPT/Autoclave
Safety Rating C.S.A. / Class I, Division 1 CE Marking
Applications:
• Gas Wellhead Build-up Tests
• Stimulation Monitoring
• Pipeline monitoring
• Fracture Monitoring
• Wellhead Monitoring
• Injection Pressure Monitoring
• Perforation Monitoring
• Workover Monitoring