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Overall Dimension	Ф89mmx9090mm	Ф73mmx4300mm
Temperature Resistance	175℃	175°C(4h)
Pressure resistance	140MPa	140MPa
Maximum Velocity Measurement	1800m/h	1800m/h
The lectrode is of maximum diameter	92mm	76mm
Measuring Borehole Range	140~406mm	96~450mm
Signal Transmission Mode	M2 / PCM3506	PCM3506
Dynamic Measuring Range	0.1~10000Ω.m	0.1~10000Ω.m
Measurement Accuracy	0.2~1.00Ω.m±7%	0.2~1.00Ω.m±7%
	1.00~10000Ω.m±2%	1.00~10000Ω.m±2%
	10000~40000Ω.m±7%	10000~40000Ω.m±7%
Measuring Point	A0 electrode midpoint	A0 electrode midpoint
Baud Rate	M2 20.333/40.666kbit/s	8Kbit/s
Baud Rate	PCM 8.333Kbit/s

*It consists of electronic circuit and push-back device.
*Microsphere voltage, microsphere current and well diameter are collected.
*The microsphere focusing resistivity curve and well diameter curve were obtained.
*Push-back device adopts self-developed adaptive structure, no matter how well wall changes, can be to make sure the plate is pressed against the well wall.