Specifications; Device Specifications - Teledyne Meridian User Manual

Appendix A. Specifications
A.1. Device Specifications
Category

Specifications

3-4 wire PCB (All relays energized, with
LCD heater, up to three sensors based on
Table 4-4: Hard Wired Configurations –
Sensor Types Supported for 3 or 4-Wire
configurations and with one optional com-
munications PCB)
3-4 wire PCB (All relays energized, without
LCD heater, up to three sensors based on
Power
Table 4-4: Hard Wired Configurations –
Requirements
Sensor Types Supported for 3 or 4-Wire
configurations and with one optional com-
munications PCB)
2-Wire PCB
4-Wire loop power supply
Four configurable form C (SPDT) relays rated for 5A @ 30VDC or 250VAC resistive
Relay1, Relay2 and Relay3 level alarms are configurable for high or low trip, for normally
Relays energized (failsafe) or normally de-energized and for latching or non-latching
Relay4 is always normally energized for failsafe operation so loss of power to the device
indicates a fault condition.
3-Wire non-isolated (source) for
HARTWired
Loop Load
Resistance at 3-wire non-isolated (sink)
nominal 24VDC for HARTWired
4-wire isolated (sink and source)
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Table A-1: Device Specifications
USE AND DISCLOSURE OF DATA
prohibited.
UNIVERSAL GAS DETECTOR
10 to 30VDC 8.5Watts 24VDC @ 355mA
Max.
Note: Voltages as measured at the device.
10 to 30VDC 6.0Watts 24VDC @ 250mA
Max.
Note: Voltages as measured at the device.
18 to 30VDC, 21.6mA Max.
Note: Voltages as measured at the device.
10-30VDC, 24mA Max.
Note: Voltages as measured at the device.
840Ω Max.
230 to 600Ω
680Ω Max.
230 to 600Ω
680Ω Max.
MERIDIAN
SPECIFICATIONS
A-1