JW-1A Digital Well Temperature GaugeDetailed product description：

1、 Purpose:
The JW-1A digital well thermometer is mainly used to measure the temperature inside geological drilling. The well temperature probe is sent into the well by a logging cable, and the temperature curve that varies with the depth of the well can be obtained through a ground controller. Its value can be used to divide geological profiles, determine geothermal gradients, cement surface elevation, and determine the location of aquifers.

2、 Main technical characteristics
（1） Explore the tube
1. Instrument appearance: Φ 40mm × 800mm
2. Pressure resistance: 15MPa
3. Measurement range: 5-95 ℃
4. Measurement accuracy: ± 0.5 ℃
5. Time constant:<20 seconds
6. Insulation impedance: Line to shell>100 M Ω, not less than 2 M Ω when wet
(Note 1: The line to the shell refers to when it has not been taken into the well or subjected to type testing, and when it is damp, it refers to when it has been removed from the well and wiped dry; Note 2: The test voltage shall not exceed 30V)

（2） Ground controller
1. Instrument appearance: 280 × 234 × 138mm
2. Measurement range: 0-100 ℃
3. Resolution: 0.1 ℃
4. Working power supply: 220V 50Hz 4W