Mamac Panel-Mounted Pressure TransducerWARNINGElectric shock hazard Can cause personal injury or equipmentdamageThis equipment must be properly grounded Connections andservice to the MicroTech III control panel must be performedonly by personnel that are knowledgeable in the operation ofthe equipment being controlledThe following describes the proper wiring of these pressuretransducers with mA output1 Remove the terminal block by carefully pulling it off thecircuit board2 Locate the [+] and [-] terminal markings on the board3 Attach the supply voltage to the [+] lead4 Connect the 4-mA output ([-] terminal) to the controller’sinput terminal5 Ensure that the power supply common is attached to thecommon bus of the controller6 Re-insert the terminal block to the circuit board and applypower to the unit7 Check for the appropriate output signal using a DVM seton DC milliamps connected in series with the [-] terminalSpecificationsAccuracy: ± 1% FSOverpressure: 10 PSIDSupply Voltage: 12–40 VDC12–35 VAC (VDC output units only)Supply Current: VDC units — 10mA maxmA units — 20 mA maxEnclosure: 18 Ga C R Steel NEMA 4 (P-65) or panel-mountchassisFinish: Baked-on enamel PMS2GR88BCompensated Temp Control: 25°F – 175°F (-18°C – -80°C)T C Error: ± 0 0125%/°F (± 0 02%/°C)Operating Temp Range: 0°F – 175°F (-18°C – 80°C)Media Compatibility: Clean dry air or any inert gasEnvironmental: 10 – 90% RH Non-condensingWire Size: 12 Ga maxLoad Impedance: 1 6K ohms max at 40VDC (mA output units)1K ohms min VDC output units)Weight: Enclosure — 1 0 lbs (45 kg)Panel-mount — 0 5 lbs (25 kg)Figure 14: Mamac Panel-Mounted Pressure Transducer DimensionsIM 919-3 • MICROTECH III CONTROLLER 12 wwwdesCrIpTIon of operaTIon