Honeywell STD770 High Accuracy Differential Pressure Transmitter with 0.05% Reference Accuracy HART 4-20mA

Honeywell STD770 Differential Pressure Transmitter

High line pressure is the quiet enemy of differential pressure accuracy: a DP cell that reads perfectly on the bench can drift several tenths of a percent once it sits on a 100 bar header. The Honeywell STD770 addresses this with +/-0.05% reference accuracy plus static pressure compensation, so the corrected reading stays trustworthy across the full operating envelope.

Model: STD770-E1AS4AS-1-C-CHB-12C-F-30A6-FX,F1,F5,TP-0000. New and original in factory packaging, 12 months factory warranty.

Accuracy Improvement Details

• +/-0.05% reference accuracy measured under reference conditions, not an optimistic typical value.
• Static pressure compensation keeps span error under 0.05% per 7 MPa of line pressure change.
• 316L coplanar diaphragm resists the mechanical hysteresis that degrades repeatability over time.
• HART digital communication allows remote zero and span trim with the reading verified digitally.
• Sealed sensor module isolates the measuring element from humidity and vibration induced offset.

Technical Specifications

Typical Applications

• High pressure flow measurement on wellheads and letdown lines
• Column and separator level on pressurised vessels
• Catalyst bed and reactor differential monitoring
• Custody transfer support loops requiring tight uncertainty budgets

Ordering

MOQ 1 piece, T/T payment, CO certificate included. Confirm your line pressure and DP range with our engineers and we will match the right static pressure option.