Teledyne hfc-303-307 User Manuals

Table of Contents

• GENERAL INFORMATION

  4
• FEATURES

  4
• SPECIFICATIONS

  5
• OPTIONAL 4-20 MA CURRENT OUTPUT

  6
• OTHER ACCESSORIES

  6
• OPERATION

  7
• RECEIVING INSPECTION

  7
• POWER REQUIREMENTS

  7
• OUTPUT SIGNAL

  7
• MECHANICAL CONNECTIONS

  7
• ELECTRICAL CONNECTIONS

  8
• 4 – 20 MA CONNECTIONS

  11
• OPERATION

  12
• RANGE CHANGING

  16
• OUTPUT FILTER

  16
• CONTROLLING OTHER PROCESS VARIABLES

  16
• COMMAND INPUT

  16
• VALVE OVERRIDE CONTROL

  17
• GAIN POTENTIOMETER

  17
• TEMPERATURE COEFFICIENTS

  18
• THEORY AND FUNCTION

  19
• OVERALL FUNCTIONAL DESCRIPTION

  19
• SENSOR DESCRIPTION

  19
• SENSOR THEORY

  19
• BASE

  20
• SHUNT DESCRIPTION

  21
• SHUNT THEORY

  21
• CONTROL VALVE

  23
• ELECTRONIC CIRCUITRY

  24
• INSTRUMENT PERFORMANCE

  24
• MAINTENANCE

  25
• AUTHORIZED MAINTENANCE

  25
• TROUBLESHOOTING

  25
• ADJUSTMENTS

  26
• END CAP REMOVAL

  27
• PRINTED CIRCUIT BOARD AND SENSOR REPLACEMENT

  28
• OUTLINE DRAWINGS

  29
• HFM-301

  29
• HFC-303

  29
• HFM-305

  30
• HFM-306

  30
• HFC-307

  31
• WARRANTY

  32
• WARRANTY REPAIR POLICY

  32
• NON-WARRANTY REPAIR POLICY

  32
• APPENDIX

  33
• APPENDIX 1- VOLUMETRIC VERSUS MASS FLOW

  33
• APPENDIX 2 - GAS CONVERSION FACTORS

  34