ABB Instrumentation 600T 621 GF pressure transmitter with 4–20 mA output and HART communication protocol. Designed for precise monitoring and control of process pressures in demanding industrial applications, with a range of 5.8–348 PSI, full vacuum capability to -14.7 PSI, and 21 MPa maximum working pressure. Integrates with DCS, PLC, and SCADA systems for real-time data acquisition and process automation.
Specifications:
Maximum Span: 348 PSI
Minimum Span: 5.8 PSI
Upper Range Limit (URL): 348 PSI
Lower Range Limit (LRL): -14.7 PSI (Full Vacuum Capability)
Maximum Working Pressure (MWP): 21 MPa
Output Signal: 4–20 mA + HART Protocol
Power Supply: 10.5–55 VDC
Key Features:
High accuracy for critical process measurement and control
Wide operating span for versatile applications
HART protocol for advanced diagnostics and remote configuration
Rugged, industrial-grade design for harsh environments
Compatible with DCS, PLC, and SCADA systems
Applications:
Perfect for oil & gas production, chemical and petrochemical plants, water treatment facilities, power generation, and general industrial automation where stable and repeatable pressure measurement is essential.
Questions buyers ask
What pressure, flow and temperature is it rated for?
This transmitter measures pressures from 5.8 to 348 PSI (minimum to maximum span), with a lower range limit extending to -14.7 PSI for full vacuum capability and a maximum working pressure of 21 MPa. Flow and temperature ratings are not provided in the listing; ask the seller for operating temperature limits and whether any process temperature compensation was configured. Pressure transmitters are sensors, not flow devices—they measure static or differential pressure that may be used to infer flow in some applications.
What should I inspect before putting it into service?
Verify the diaphragm and process connections for damage, corrosion, or residue from previous service; inspect the housing and electrical connections for physical damage or moisture ingress. Test the 4–20 mA output and HART communication across the full span using a calibrated pressure source to confirm accuracy and linearity meet your process requirements. Check that the configured range matches your application, and confirm the power supply polarity and loop resistance are within the 10.5–55 VDC specification limits.
General guidance for this type of equipment. Ask about this specific unit in your inquiry — the seller answers directly.
Inspection, shipping & payment
Inspection
Pre-purchase inspections are welcome during normal business hours by appointment arranged in advance. We can provide complimentary transportation from DFW Airport and back if you would like to send someone to see the equipment in person. We can also walk through the item over a video call for domestic or international buyers. We are on US Central Time.
Shipping and loading
The equipment is located at our yard south of Dallas, Texas. We can assist with shipping arrangements.
Loading is provided at no charge for equipment under 15,000 lb when scheduled in advance. Equipment over 15,000 lb requires a crane, which is arranged and paid for by the buyer.
Payment
Payment in full is required FOB our yard in South Dallas. A verifiable cashier's check is accepted for collection in person. For release to a third-party shipper we require a wire transfer cleared in our account before the equipment leaves the yard.
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