Customization: | Available |
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Type: | Differential Pressure Transmitter |
Structure Type: | Pressure Transmitter |
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Step | Instruction |
1 | Inspect the transmitter for shipping damage. Ensure model number (EJA120E) matches requirements. |
2 | Mount on a vibration-free surface using 2-inch pipe mounting or flat surface bracket (NEMA 4X/IP67). |
3 | Install process connectors with 1/2" NPT female threads. Use sealing washers for airtight connections. |
4 | Connect impulse piping to high/low pressure ports. Maintain ≤25° inclination angle for horizontal pipe mounting. |
5 | Wire using shielded twisted pair cables (18-12 AWG). Connect to terminals 11(+) and 12(-) for power/signal. |
6 | Apply 10.5-42V DC power supply. Verify polarity matches terminal markings. |
7 | Configure range using HART Communicator (375/475) or BT200: Connect to terminals 1(+) and 2(-). |
8 | Perform zero calibration: Vent both pressure chambers to atmosphere, adjust via ZERO screw or HART command. |
9 | Pressure test at 1.5x rated pressure (43.5 psi for standard model). Check for leaks at all connections. |
10 | Verify 4-20mA output corresponds to applied differential pressure. Use test diaphragm for span calibration. |
11 | Enable LCD indicator (if equipped): Hold MODE button 3 seconds to display measured pressure/percentage. |
12 | Set damping time (0-100 sec) via HART parameter "DAMPING" if process requires signal smoothing. |