Honeywell ERX, User Manual, Page: 11 / 84

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Temperature System
-40 to 150 (-40 to 65C)
The temperature system consists of a highly stable solid-state transducer connected to the ERX
main circuit board through a 6-foot Teflon cable. The stainless steel probe is ¼” in diameter and
six inches in length; however, longer or shorter probe lengths are available options as well as an
armor cable. A ½” NPT nylon slip-along fitting is also provided for securing the temperature
probe within the thermo well. The temperature probe assembly is universally interchangeable
between ERX Recorders and electronic volume correctors.
Sample Interval
In the ERX Recorder sample-measurement mode applies power to the electronic circuit so the
pressure(s), temperature(s), and power voltage measurements may be obtained. After obtaining
new measurements, the item values and LCD are updated, and then compared to alarm limits, if
the values exceed the alarm limit, the instrument will jump to alarm sub-routine. After
completion of these tasks, the circuitry will return to the sleep mode of operation.
Sample rates: 1, 5, 10, 30, and 60 seconds, default is 10 seconds
Note: the faster the sample rate, the quicker battery powered instruments power is depleted.
Sample Interval Battery Life
1 second 1 year
10 seconds 3 years
60 seconds 4 years
Log Interval
The log interval is a user-selectable item, its value determines how often Audit Trail report items
are stored into the instrument’s memory. The choices are 1, 5, 10, 15, 30, 60, or 24 hours, 60
minutes as the default. At the selected time interval, the recorder will automatically enter a
sample measurement wake-up cycle and store the user-defined Audit Trail report items into the
instrument’s memory. The time-stamped record placed in memory will be identified with the log
trigger “Time.”
Hourly and daily time triggers will always occur at the top of the hour, at 00: 00: 00 zero minutes
and seconds. For log triggers less than 60 minutes, time triggers will occur at 1, 5, 10, 15, or 30
minutes with zero seconds. Log triggers other than time will appear randomly and are placed in
memory at the exact time the incident occurred.