Functional Check - Emerson Rosemount 936 Reference Manual

Reference Manual
00809-0100-4036
6.6

Functional check

Emerson calibrated the Rosemount 936 system at the factory for your specific gas or vapor
detection requirements. Use the check filters included in the commissioning kit according
to the corresponding calibrating gas to validate correct installation.
The functional check filter is a convenient operational check used to confirm that the
response has not changed from previous readings. The filter is not used for calibration,
which is unnecessary, nor does it equate to a particular quantity of gas.
Prerequisites
WARNING
Do not allow automatic activation.
Disconnect any external device that should not be activated during the calibration
check.
Note
This functional verification procedure is for a standard 0-20 mA output.
Prior to starting the functional check, verify that the power to the detector is on and that
the current of the 0-20 mA channel is stable. Record the reading.
Note
The R1T26xxxx short range model detects Hydrogen Sulfide (H
52 ft. (5–16 m). Unless specified in your purchase order, the detecting unit is set by default
to the mid/long range. To configure the model for short range detection, please refer to
Short range
Procedure
1. Position the functional check filter in front of the detector. Center the functional
2. Wait twenty seconds.
Rosemount 936
model.
check filter's window over the viewing window of the detector.
The check filters are provided in the commissioning kit.
Figure 6-4: Detector with Functional Check Filter Installed
Operation
October 2021
S) gas at a distance of 17–
2
57