Fischer pressure transmitter Building technology DE61

Measuring transmitter with limit swit-ching functions for acquisition and trans-mission of lowest pressure and differential pressure.
Typical Applications
filter technics
precision measurements in air
conditioning conduits
clean-room pressure
compensation
burner vaccuum measurements
circulating air controlling in
furnaces
Main Features
highly pressure sensitive
long-time stability
resistant to shocks and vibration
high overpressure safety
local LC-Display

Principles of Operation
The function of this transmitter is based on a capacitive sensor element. Due to modern micromechanical manufactu-ring process this sensor is highly over-
pressure safe, shock and vibration resistant and long-time stable. The differential pressure acts on the sensor element and effects a measuring signal. The electronic amplifier then ge-nerates an electrical output signal of 0 /4-20 mA. This output signal is used for external data processing and is shown on the LC-display e.g. in mbar. The LC-display can also be used for in-dication and precise adjustment of the differential pressure dependent swit-ching functions. Both change-over con-tacts can be adjusted to any value withinthe measuring range.

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