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141-072011 - 201/203 Series Page 3 of 23
Table of Contents
1. GENERAL INFORMATION ............................................................................................................................................ 4
1.1. FEATURES .................................................................................................................................................................... 4
1.2. SPECIFICATIONS HFM-201/205 ................................................................................................................................... 5
1.3. SPECIFICATIONS HFC-203/207 .................................................................................................................................... 5
1.4. OPTIONAL 4 - 20 MA CURRENT OUTPUT ...................................................................................................................... 6
1.5. OTHER ACCESSORIES ................................................................................................................................................... 6
2. INSTALLATION AND OPERATION ............................................................................................................................. 8
2.1. RECEIVING INSPECTION ............................................................................................................................................... 8
2.2. POWER REQUIREMENTS ............................................................................................................................................... 8
2.3. OUTPUT SIGNAL........................................................................................................................................................... 8
2.4. MECHANICAL CONNECTIONS ....................................................................................................................................... 9
2.5. ELECTRICAL CONNECTIONS ......................................................................................................................................... 9
2.6. OPERATION ................................................................................................................................................................ 10
2.7. RANGE CHANGING: .................................................................................................................................................... 14
2.8. VALVE-OVERRIDE CONTROL ..................................................................................................................................... 14
3. THEORY OF OPERATION ........................................................................................................................................... 15
3.1. OVERALL FUNCTIONAL DESCRIPTION: ...................................................................................................................... 15
3.2. SENSOR: ..................................................................................................................................................................... 15
3.3. ELECTRONICS: ........................................................................................................................................................... 15
3.4. SHUNT: ...................................................................................................................................................................... 16
3.5. VALVE: ...................................................................................................................................................................... 17
4. MAINTENANCE .............................................................................................................................................................. 18
4.1. AUTHORIZED MAINTENANCE ..................................................................................................................................... 18
4.2. TROUBLESHOOTING ................................................................................................................................................... 18
4.3. ADJUSTMENTS ........................................................................................................................................................... 19
4.4. END CAP REMOVAL: .................................................................................................................................................. 20
4.5. PRINTED CIRCUIT BOARD REPLACEMENT .................................................................................................................. 20
4.6. SENSOR REPLACEMENT: ............................................................................................................................................ 20
4.7. ORIFICE CHANGES: .................................................................................................................................................... 20
5. WARRANTY .................................................................................................................................................................... 23
5.1. WARRANTY REPAIR POLICY ...................................................................................................................................... 23
5.2. NON-WARRANTY REPAIR POLICY ............................................................................................................................. 23