Teledyne hfm-300 User Manuals

Table of Contents

• GENERAL INFORMATION

  4
• FEATURES

  4
• SPECIFICATIONS

  5
• OPTIONAL 4-20 MA CURRENT OUTPUT

  5
• OTHER ACCESSORIES

  6
• 1.4.1. Hastings Power supplies

  6
• 1.4.2. Interconnecting Cables

  6
• INSTALLATION AND OPERATION

  7
• RECEIVING INSPECTION

  7
• POWER REQUIREMENTS

  7
• OUTPUT SIGNAL

  7
• MECHANICAL CONNECTIONS

  8
• 2.4.1. Filtering

  8
• 2.4.2. Mounting

  8
• 2.4.3. Plumbing

  8
• ELECTRICAL CONNECTIONS

  8
• OPERATION

  9
• 2.6.1. Operating Conditions

  9
• 2.6.2. Zero Check

  10
• 2.6.3. High Pressure Operation

  10
• 2.6.4. Blending of Gases

  11
• OUTPUT FILTER

  12
• CONTROLLING OTHER PROCESS VARIABLES

  12
• COMMAND INPUT

  13
• VALVE-OVERRIDE CONTROL

  13
• GAIN POTENTIOMETER

  13
• TEMPERATURE COEFFICIENTS

  14
• THEORY OF OPERATION

  15
• OVERALL FUNCTIONAL DESCRIPTION

  15
• SENSOR DESCRIPTION

  15
• SENSOR THEORY

  15
• BASE

  17
• SHUNT DESCRIPTION

  17
• SHUNT THEORY

  17
• CONTROL VALVE

  21
• ELECTRONIC CIRCUITRY

  21
• MAINTENANCE

  22
• TROUBLESHOOTING

  22
• ADJUSTMENTS

  23
• 4.2.1. Calibration Procedure

  23
• END CAP REMOVAL

  23
• PRINTED CIRCUIT BOARD REPLACEMENT

  24
• SENSOR REPLACEMENT

  24
• GAS CONVERSION FACTORS

  25
• VOLUMETRIC VS MASS FLOW

  27
• DRAWINGS AND REFERENCES

  28
• WARRANTY

  31
• WARRANTY REPAIR POLICY

  31
• NON-WARRANTY REPAIR POLICY

  31