Basic function principles

The pressure measuring modules KM3701 and KM3712 directly record differential and relative pressures in non-aggressive gases. As in electronic signal acquisition the pressure measurement takes place via a terminal module. The pressure measuring modules convert the measured pressure into an electrical signal and make it available to the higher-level controller with a resolution of 16 bits. The measuring principle is based on the most up-to-date on-chip sensor technology. In addition to just measuring, the semiconductor also executes other functions, such as temperature compensation and avoidance of long-term drift. The status LEDs indicate proper function or errors such as range exceedance.

KM3701 single-channel differential pressure measuring module

The KM3701 terminal module can measure pressure differences between 0 and 100 hPa (0 and 100 mbar) between two hose connections. The differential pressure can be measured up to an ambient pressure of 7500 hPa (7 bar) between any points.

KM3702 - Two-channel relative pressure measuring module (0 hPa to 7500 hPa)

The KM3702 terminal module can measure pressure values between 0 and 7000 hPa (0 and 7 bar) at each hose connection. Pressure measurement takes place relative to the actual current ambient pressure.

KM3712 - Two-channel relative pressure measuring module (-1000 hPa to +1000 hPa)

The KM3712 terminal module can measure pressure values between -1000 hPa and +1000 hPa (-1 bar and +1 bar) at each hose connection. Pressure measurement takes place relative to the actual current ambient pressure.