JJZ-1A Four pen automatic logging toolDetailed product description：

1、 Purpose:
The JJZ-1A four pen automatic logging tool is suitable for geophysical logging in coalfields, metal and non-metal deposits, hydrogeological drilling, and other areas. The recorder can be used alone or in conjunction with other instruments to record various curves. This instrument consists of four note recorders, power control part, logging depth indicator, wellhead pulley, etc.

2、 Technical specifications of JJZ-1A four pen automatic logging tool
1、 Record section
1. Record basic error: ± 1%.
2. Effective recording format: 250mm.
3. Full travel time: ≤ 1 second.
4. Working power supply: AC220V ± 10%, 50Hz ± 5%.
5. Power consumption: 50W.
6. Cable lifting speed: not exceeding 1000 meters per hour.
7. Dimensions: 550 × 390 × 200mm.
2、 Power supply control section
1. Measurement range: (When fine tuning attenuation to zero) error<± 1%, the measurement range is divided into ten levels, the voltage constant ranges from 0.5 millivolts/cm to 500 millivolts/cm, the full range ranges from 12.5 millivolts to 12500 millivolts, and the input impedance ranges from 5 kiloohms to 5 megaohms.
2. The underground power supply adopts a regulated power supply and an electronic commutator, with an adjustable frequency of 10-45 cycles per second.

3、 Depth indication section
1. The pulse signal emitted by the photoelectric turntable is used to provide synchronous paper feeding signal for the recorder; On the other hand, display the logging depth digitally.
2. Digital display range: 0.01m to 999.99m, reversible counting, and equipped with a zero button.
3. Magnetic markers are suitable for cable lifting speeds ranging from 120 meters/hour to 2000 meters/hour, and can record depth markers on recording paper while triggering a buzzer for monitoring.