Commissioning Instructions

Before You Begin
(Optional) Calibrating the DP Transmitter without an Autozero Module
14
Siemens Industry, Inc. 140-1318
Restricted 2015-11-04
Linear Flow Input Signal
This section is used if the job has Vortex shedders or another linear device made by
others. CAL SETUP does not function in this mode.
1. Set TRANS RANGE to = 0 (default value).
TRANS RANGE must be 0 for the linear input function to work.
2. Enter the velocity range of the linear device into LINEAR FL RG.
3. Set FLOW COEF to 1.
Proceed to
Flow Accuracy Verification
.
(Optional) Calibrating the DP Transmitter without an
Autozero Module
This section applies for fume hoods with an external pressure sensor and without an
Autozero module. If the DP Transmitter is slightly out of adjustment, you can
compensate for that within the controller.
1.
Set REPORT to
AIRFLOW IN
.
2.
Remove the tubing connected at the HI and LO ports of the DP transmitter
(the tubing can be disconnected at the flow sensor if desired). Both ports must
be disconnected to calibrate the transmitter.
3.
Set CAL AIR to
YES
. The calibration will take approximately 3 seconds. When
calibration is completed, this point will automatically change back to NO.
4.
When
CAL AIR
changes back to NO, reconnect the HI and the LO tubing to
the transmitter (or to the flow sensor if you disconnected it there).
(Optional) Calibrating with an Autozero Module
This section is for fume hoods with an external pressure sensor and an Autozero
module. If the DP Transmitter is slightly out of adjustment, you can compensate for that
within the controller.
1. Set REPORT to AIRFLOW IN.
2. Set CAL AIR to YES.
When calibration is completed, this point will automatically change back to NO.