Downhole Sensors of ESP (oilwell)
*Pressure measuring scale: 0-35Mpa (5000psi) accuracy: 1.0%FS
*Pressure resolution: 0.01Mpa (1.45psi)
*Over pressure endurance: 1.5FS
*Temperature measuring scale: 0-1200 (32-250℉ ) accuracy: 120 (3.6 )
*Temperature resolution: 0.10 (0.18 )
*When motors star point is unbalanced and voltage reaches 150VAC, its measuring error is not more than 0.06%.
*Function of insulated components: insulated resistance is not less than 2000M(Ohms) when voltage reaches 2500VDC.
*Reliable short circuit protection: voltage of input port is not more than 1.5 VAC when one phase of power cable is grounding.
*Data storage: automatic memory with storage capacity of 90 days once per hour and 72 hours once per 30 seconds.
*Signal transmission: via ESP power cable
*Update rate: 15 seconds
*Surface communication (optional) : RS232
*Quality assurance: Within12 months any system with failure to work properly, caused by defect of quality, is to be replaced by new one without charge.