5.2.2 Gas Temperature
EC350 Gas temperature is measured on a time-based approach (every 30 seconds), as opposed to being
based on volume input. With each 30 second measurement, the gas temperature correction factor is
computed and high and low Temperature alarms are checked (regardless of flow rate conditions).
The EC350 uses a high resolution analog to digital conversion process to produce a very accurate final
reading.
Only one Temperature probe can be used with the EC350. The Temperature probe is used for computing
the Gas temperature correction factor (item 045). Gas temperature measurement can be disabled for
either transducer by use of item 1055 (T1 Enable).
Refer to “Item Reference Guide” for information about the following temperature items and several other
additional temperature Items.
l
Gas temperature (item 026)
l
Gas temperature units (item 089)
l
Temperature correction factor (item 045)
l
Base temperature (item 034)
l
Temperature low alarm (item 144)
l
Temperature low alarm limit (item 027)
l
Temperature high alarm (item 146)
l
Temperature high alarm limit (item 028)
5.2.2.1 Temperature statistics
EC350 supports various gas temperature statistical items. Following are the supported gas temperature
statistical items:
l
Interval high gas temperature (item 216)
l
Interval low gas temperature (item 216)
l
Daily average gas temperature (item 257)
l
Previous day gas temperature (item 186)
l
Max gas temperature (item 293)
l
Max gas temperature date/time (item 294/295)
l
Min gas temperature (item 297)
l
Min gas temperature date/time (item 298/299)
5 Key features
5.2 P-T-Z Measurement
Honeywell 2024
73
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