Model
KGY3 negative pressure sensor, which is Intrinsic Safety sensor, can be
used for detecting the negative pressure in mine underground.
It employs the micro pressure sensing element of silicon with
high sensitivity. It has the characteristics of high accuracy,
stability and credibility and convenient use and can be equipped
with all the safety and production monitoring systems.
Technical
Parameters
Measuring Range
3kPa or 5kPa
Comprehensive Accuracy
1%
Output
Model KGY3-1
constant current 1
5mA, load resistance 0
500
Model KGY3-2 frequency 200
1000Hz, current is no less than 4mA
Model KGY3-3 RS485 interface, transmission
rate 1200bps
5mA, load resistance 0 
225 