Dwyer GFC User Manual
Page 3
TABLE OF CONTENTS
1. UNPACKING THE GFC MASS FLOW CONTROLLER........................
1.1 Inspect Package for External Damage..............................................
1.2 Unpack the Mass Flow Controller.......................................................
1.3 Returning Merchandise for Repair.....................................................
2. INSTALLATION....................................................................
2.1 Primary Gas Connections.................................................................
2.2 Electrical Connections......................................................................
2.2.1 Valve Control Configuration.......................................................
2.2.2 Remote LCD Readouts.................................................................
2.2.3 Panel Mounting Readouts............................................................
3. PRINCIPLE OF OPERATION....................................................
4. SPECIFICATIONS..................................................................
4.1 CE Compliance................................................................................
5. OPERATING INSTRUCTIONS.....................................................
5.1 Preparation and Warm Up................................................................
5.2 Flow Signal Output Readings..............................................................
5.3 Swamping Condition...........................................................................
5.4 Setpoint Reference Signal..................................................................
5.5 Valve OFF Control (Open Collector NPN Compatible)..........................
5.6 Valve Test/Purge.................................................................................
6. MAINTENANCE....................................................................
6.1 Introduction........................................................................................
6.2 Flow Path Cleaning..............................................................................
6.2.1 Cleaning the Inlet Filter Screen in GFC-110/111 Models...............
6.2.2 Cleaning the Inlet Filter Screen in GFC-113/114 Models..........
6.2.3 Valve Maintenance for GFC-110/111/113/114 Models.................
7. CALIBRATION PROCEDURES....................................................
7.1 Flow Calibration...................................................................................
7.2 Calibration of GFC Mass Flow Controllers.......................................
7.2.1 Connections and Initial Warm Up...............................................
7.2.2 Zero Adjustment............................................................................
7.2.3 SPAN Adjustment.........................................................................
7.3 Linearity Adjustment..........................................................................
7.3.1.1 Disable Solenoid Valve in GFC-110/111/113/114 Models.........
7.3.1.2 Open Motorized Valve in GFC-1143/1144/1145 Models............
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