Type: | Differential Pressure Transmitter |
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Structure Type: | Strain Gauge Pressure Transmitter |
Measuring Medium: | Gas |
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Step | Description |
1 | Pre-Installation Preparation: Ensure the transmitter is compatible with process media, pressure, and temperature. Verify materials (wetted parts) match application requirements. |
2 | Mechanical Installation: Mount the transmitter vertically using appropriate brackets. Align process connections (1/4" NPT or 1/2" NPT) coplanar to avoid stress. Tighten flange bolts evenly to 15-20 Nm torque. |
3 | Electrical Connections: Use shielded twisted-pair cables (16-22 AWG). Connect wiring to terminals 1 (+) and 2 (–) for power (12-42 V DC). Ensure proper grounding per ANSI/ISA-RP12.06.01. |
4 | Configuration: Use HART communicator (e.g., 475/375) to set parameters: range (URL/LRL), damping, output linearization. Verify zero calibration under atmospheric pressure. |
5 | Startup: Slowly apply process pressure. Check for leaks at flange seals. Monitor output (4-20 mA) against expected values. Adjust zero if necessary. |
6 | Maintenance: Perform periodic zero checks. Inspect seals and diaphragms for damage. Recalibrate annually or per process conditions. |
7 | Safety Considerations: Isolate process pressure before servicing. Follow IEC 61508/61511 for functional safety systems. |