Honeywell 621-3450 PLC Module
Brand: Honeywell
Module: 621-3450
Description: PLC Module
Product Orgin: USA
Honeywell 621-3450 PLC Module. Negative deviation fault: When judging the measurement accuracy of the differential pressure transmitter in the positive migration state, two parts are generally carried out: First, the positive and negative pressure measurement of the three valve groups of the differential pressure transmitter should be closed, and then the balance valve should be opened and the instrument plug should be empty. At this time, 20mA should be the output value of the instrument; After the pressure point of the positive pressure chamber and the vent switch are closed and opened in turn, 4mA should be the output value of the instrument. After two operations, if the output value of the instrument is inconsistent with the actual value, then the problem may occur in the following aspects: (1) isolation fluid leakage; ② Positive and negative pressure chamber leads do not flow; ③ Zero is not found accurately; ④ The amount of migration changes.
| AB | Bently Nevada | ICSTriplex | Emerson |
| 1756-EN2T/B | 3500/42 135489-01 | T8831 | VE4006P2 KJ3241X1-BA1 |
| 1756-OB32 | 330703-000-040-10-11-00 | TC60102 | KL4201X1-BA1 |
| 190e-and2-cb40c-ky-r | 125388-01 | TC20702 | KJ3243X1-BB1 |
| 1746-P4 | 3500/45 176449-04 | TC00402 | KJ3002X1-BE1 12P0682X052 |
| 1768-L45S | May-00 | TC50402 | KJ3001X1-BA1 12P0549X112 |
| 1756-CNBR | 3500/42M | T8173 | KJ3001X1-BA1 129P549X152 |
| 1746-HT | 3500/93 135785-01 | T9193 | VE4005S2B2 KJ3221X1-BA1 12P2531X092 |
| 1756-L1 | 128275-01 | T9191 | VE4002S1T2B5 KJ3204X1-BA1 12P3275X022 |
| 1783-BMS07SA | 330190-080-01-00 | T8232C | CE4002S1T2B5 KJ3204X1-BA1 12P3275X022 |
| 1756-SYNCH | 125840-02 | TC32502 | 960177-02 |
| 1761-NET-AIC | 330780-50-00 | T8431C | KJ4001X1-BA2 VE3051CO 12P1562X012 |
| 1794-TB3 | 3500/46M | TC50102 | KJ2101X1-BA 12P2690X012 |
| 1794-IT9 | 3500/91 | TC30401 | KJ4010X1-BF1 12P0831X072 |
| 1747-M13 | 3500/33 162291-01 | T8086 | PR6423/002-0030 CON021 |
| 1756-M02AE | 330980-50-00 | T8433C | KJ3209X1-BA1 12P3905X012 VE4002S2T1B1 |
| 1756-OB16I | 330910-05-10-02-00 | T8830C | KJ3001X1-BC1 12P0551X132 VE4001S3T1B1 |
| 1766-L32BXB | 330780-90-00 | TC20102 | FX-490 |
| 1769-L33ER/A | 3500/61 | TC30602 | KJ3001X1-BG1 12P0557X162 |
| 1756-OA8E | 146031-01 | TC31202 | KJ4010X1-BG1 12P0830X062 |
| 1791-16A0 | 135489-02 | T83127C | KJ3222X1-BA1 12P2532X122 CE4003S2B1 |
| 1747-DCM | 1900/65A | TC32202 | KJ3001X1-BC1 |
| 1756-PB72 | 3500/65-01-01 | T8891C | KJ3002X1-BA1 12P06801X122 |
| 1762-OA8 | 3500/42 138700-01 | TC32402 | 12P3275X022 KJ3204X1-BA1 |
| 1794-IV16 | 330180-91-05 | TC51002 | KJ4001X1-BA2 |
| 1771-PS7 | 3500/50 133434-01 | TC51702 | KJ3221X1-BA1 12P2531X132 VE4035S2B1 |
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