QmB Series IP40, IP65, IP65XP
Section 4 Maintenance
4-6
Installation and Operation Manual
X-CM-QmB-eng
Part Number: 541B029AHG
June, 2008
4. Provide an electrical signal to the QUANTIM representing a setpoint
of 50% of full scale flow and adjust the inlet and outlet pressures to
calibration conditions.
5. Verify that the electrical output signal reaches 100% of flow. For
MFC applications vary the setpoint over the 1% to 100% range and
verify that the output signal matches the setpoint.
a. If possible, connect a flow measurement device (such as a
rotometer) to the QUANTIM outlet to monitor the actual flow
behavior.
6. If the QUANTIM is functioning correctly, the problem may lie
elsewhere in the flow system. Re-verify the installation as well as the
upstream/downstream fluid system configuration.
7. Please contact Brooks Instrument for further assistance in
troubleshooting. Refer to the back cover of this manual for contact
information.
Figure 4-1 Bench Troubleshooting Circuit
