Related Manuals for Aalborg GFM 67
Summarization of Contents
Unpacking the GFM Mass Flow Meter
Inspect Package for External Damage
Inspect the shipping carton for any external damage upon receipt of the GFM Mass Flow Meter.
Unpack the Mass Flow Meter
Carefully open the carton and inspect for concealed shipping damage; verify all items against the packing list.
Returning Merchandise for Repair
Contact customer service for a Return Authorization Number (RAN) before returning equipment for repair or warranty claims.
Installation
Primary Gas Connections
Connect primary gas lines, ensuring only clean gases are used and filtering if necessary.
Electrical Connections
Connect the appropriate power supply (+12VDC or +24VDC) to the unit's power jack or connector.
Remote and Panel Mounting Readouts
Details optional remote LCD displays and panel-mount readouts for monitoring flow data.
Specifications
CE Compliance
States that GFM models bearing a CE mark comply with specified EMC and immunity standards.
Operating Instructions
Preparation and Warm Up
Instructions for powering up and allowing the Mass Flow Meter to warm up for at least 15 minutes before operation.
Flow Signal Output Readings
How to view flow signals on the LCD display or analog outputs (0-5 VDC, 4-20 mA).
Swamping Condition
Describes the "swamping" condition occurring above 110% of the maximum flow rate and how to resolve it.
Maintenance
Introduction
Emphasizes using clean, filtered gases and avoiding impediments to protect the sensor and flow passages.
Flow Path Cleaning
Guides on inspecting and cleaning flow paths by removing debris or flushing with alcohol.
GFM 17 Models Flow Path Cleaning
Specific instructions for disassembling the RFE and cleaning the filter screen for GFM 17 models.
GFM 37/47 Models Flow Path Cleaning
Steps for cleaning the filter screen for GFM 37/47 models by removing a block.
GFM 57/67/77 Models Flow Path Cleaning
Procedure for cleaning the RFE on high flow models, though disassembly is not recommended.
Calibration Procedures
Flow Calibration
Details Aalborg's professional calibration services using precision calibrators and NIST traceable standards.
GFM Mass Flow Meter Calibration
Explains field recalibration, zero, and span adjustments using on-meter potentiometers.
Linearity Adjustment
Outlines the process for adjusting linearity at specific flow points (25%, 50%, 75%, 100%).
LCD Display Scaling
Describes how to re-scale the LCD output for different flow ranges or engineering units.
Troubleshooting
Common Conditions
Lists initial checks for proper functioning, including cable connections, leaks, and power supply.
Troubleshooting Guide
A table listing indications, likely reasons for malfunction, and recommended remedies.
Technical Assistance
Provides contact information for phone support from Aalborg® Instruments for qualified personnel.
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