5 Pressure / Temperature Key Items
The ERX 350 can be configured to measure Gas Pressure from two independent Digital Pressure
Transducers as well as Gas Temperature from a Thermistor-based Temperature Probe. Listed here are
key Items for the ERX 350 for P1, P2, and T1 measurement operations:
Configuration Items:
586 (Sample Interval) –> Seven options ranging from 1 to 60 second intervals
549 (P1 Pressure Units) –> Nine selectable units options for P1
550 (P2 Pressure Units) –> Nine selectable units options for P2
551 (T1 Temperature Units) –> Four selectable units options for T1
552 (P1 No of Decimal for P1 Press) –> Decimal point location for P1
409 (P2 No of Decimal for P2 Press) –> Decimal point location for P2
1052 (P1 Transducer Enable) –> Yes/No (enable/disable measurement of P1 gas pressure)
1053 (P2 Transducer Enable) –> Yes/No (enable/disable measurement of P2 gas pressure)
1055 (T1 Temp Probe Enable) –> Yes/No (enable/disable measurement of T1 gas temperature)
Measurement Items:
500 (P1 Gas Pressure) –> measured value of P1 gas pressure
501 (P2 Gas Pressure) –> measured value of P2 gas pressure
502 (T1 Gas Temperature) –> measured value of T1 gas temperature
503 (Case Temperature) –> measured value of case / ambient temperature (on board)
Status Indication Items:
569 (P1 Transducer Type) –> Gauge, Absolute, or None (status Item – not configurable)
409 (P2 Transducer Type) –> Gauge, Absolute, or None (status Item – not configurable)
570 (P1 Pressure Range in PSI)–> status Item – not configurable
571 (P2 Pressure Range in PSI)–> status Item – not configurable
Figure 5-1: Pressure Transducer
5 Pressure / Temperature Key Items
Honeywell | 7
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