Transmitter Board
The transmitter board assembly consists of the signal conditioning circuit,
microprocessor, digital display and 4-20 mA output circuit. The transmitter board
assembly is connected to the connection board via ribbon cable and secured onto the
stand-off via two thumb screws. To remove the transmitter board simply move the
thumb screws counter-clockwise and slowly pull the transmitter board away.
Unplug the ribbon cable to completely remove the transmitter board from sensor
unit.
Note: Do not use force to tighten the thumb screws when installing the transmitter board
back on the connection / termination board.
Figure 2. Model PT295 Transmitter and connection board assembly
PT295 Series Toxic Sensor Rev 5.1
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