SensAlarm
Flex
–
Universal Gas Detection System
Sensidyne Document No. 360-0257-01 (Rev A)
P a g e
53 | 82
6.1.4.
A multimeter will be required to monitor the 4 to 20mA output. To connect the multimeter,
set the meter to millivolts (mV), and connect the probes to the 4 to 20mA PCA located in the
bottom left of the Gas Monitor enclosure, and to the Sensor Interface Channel to be checked
and adjusted.
6.1.5.
The multimeter will display in millivolts (mV) the following values for each of the below
milliamp (mA) output. This reading is a true representation of the circuit and what the
control system is reading, and what the SCADA will base values on. Confirmation at the
DCS is unnecessary, but may be preferred. This method is provided to allow a technician to
perform the verifications locally, and to make the process more efficient by limiting the
process to a single technician and to save the time moving between the Gas Monitor and
DCS.
1mA Output = 10mV multimeter display
4mA Output = 40mV multimeter display
12mA Output = 120mV multimeter display
20mA Output = 200mV multimeter display
6.1.6.
Sensidyne recommends verifying all four (4) mA values, and adjusting them as needed.
While monitoring the multimeter display for the selected Sensor Interface Channel, Arrow to
the mA value to be confirmed and select ENTER.
Summary of Contents for SENSALARM FLEX
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