Dwyer UXF2 - Manual (Page 9)

- vii -
4.7.6. How to validate a serial transmission (RS-232C/RS-485) ······················································ 85
4.7.7. How to validate the synchronization ······················································································ 87
4.7.8. How to select the language ···································································································· 88
4.7.9. How to set the ID No. ············································································································ 89
4.7.10. How to confirm the software version ··················································································· 90
5. MAINTENANCE AND CHECKUP ···························································································91
5.1. Routine checkup····················································································································91
5.2. Periodic checkup ···················································································································91
5.2.1. Checking the zero point ········································································································· 91
5.2.2. Reapplying silicon-free grease ······························································································· 91
5.2.3. How to measure the insulation resistance··············································································· 92
5.3. How to replace the fuse·········································································································93
5.4. How to replace the relay ·······································································································94
5.5. How to replace the LCD ·······································································································95
5.6. Selecting the detector ············································································································96
5.7. Troubleshooting ····················································································································97
5.7.1. If indication is abnormal ········································································································ 97
5.7.1.1. Checking the LCD/LED···························································································· 97
5.7.1.2. Checking the LED lit in red ······················································································ 98
5.7.1.3. Displaying the data in maintenance mode ································································· 99
5.7.2. If keying is abnormal ··········································································································· 100
5.7.3. If measurement value is abnormal························································································ 100
5.7.4. If analog output is abnormal································································································· 103
5.7.5. How to check the received waveform ·················································································· 104
5.7.5.1. How to connect the oscilloscope ············································································· 104
5.7.5.2. Checking the received waveform ············································································ 105
5.7.6. Remedying a hardware fault ································································································ 106
6. APPENDICES ···························································································································107
6.1. External communication specifications ··············································································107
6.1.1. Communication specifications ····························································································· 107
6.1.2. Message configuration ········································································································· 108
6.1.2.1. Reception ················································································································ 108
6.1.2.2. Acknowledge ·········································································································· 108
6.1.2.3. Error acknowledge ·································································································· 108
6.1.3. Error check ·························································································································· 108
6.1.4. Function code table·············································································································· 109
6.1.5. Error code table ··················································································································· 109
6.1.6. Cable connection specifications (RS-232C) ········································································· 109
6.2. How to make gauge paper ···································································································111
6.3. Piping Data ··························································································································112
BULLETIN F-70