Digital promoters [india] pvt ltd, an iso 9001-2000 certified company, since 1979, manufactures various types of industrial instrumentation. Loop calibrator is a part of those products. Loop calibrator is a cmos microcontroller based machine. Salient features are as follows:
1. light weight and portable
2. rechargeable battery operated
3. 4½ digit lcd display
4. 25% over and under range facility
5. keyboard operated
6. display in % facility
7. source variation in steps of 10%, 25% or continuous
8. zero and span simulation by independent keys
9. built-in 24v dc loop power supply
10. rechargeable battery operated.
11. unique feature is 2w simulation and read/power mode.
12. voltage source `short` & current source `open` protection.
13. watch-dog timer for protection against voltage spikes & transients.
