Honeywell STD700 DP Transmitter

Core Performance & Industrial Application

The Honeywell STD700 is a SmartLine family piezoresistive differential pressure transmitter for monitoring, control and data acquisition.

It delivers up to 0.05% of span reference accuracy with 0.020% URL/year stability over 10 years and up to 100:1 rangeability.

On-chip temperature compensation plus automatic static-pressure compensation maintain accuracy over wide ambient and line-pressure swings.

It outputs 4-20mA HART 7.0 signal with intuitive external zero/span setup, NAMUR NE-107 extended diagnostics and fast 100 ms response.

It carries SIL 2/3 functional safety compliance and integral dual-seal design per ANSI/ISA 12.27.0.

It is widely used for furnace combustion airflow, hydrostatic tank gauging, filter DP and level measurement spare replacement.

Technical Specifications

▶ Product type: Differential pressure transmitter

▶ Brand: Honeywell SmartLine

▶ Model: STD700 (STD725 / STD735 / STD775 variants)

▶ Sensor: Piezoresistive, on-chip temperature compensation

▶ Reference accuracy: Up to 0.05% of span

▶ Rangeability: Up to 100:1

▶ Output: 4-20 mA HART 7.0

▶ Supply voltage: 10.8 ~ 42.4 V DC (IS version limited to 30 V DC)

▶ Response time: As fast as 100 ms

▶ Ambient temperature: -40℃ ~ +85℃; meter body -40℃ ~ +110℃

▶ MAWP: 4500 psi (310 bar)

▶ Safety: SIL 2/3 (IEC 61508)

▶ Protection rating: IP66 / IP68

▶ Feature: Auto static-pressure/temp compensation, NE-107 diagnostics, modular design

▶ Country of origin: USA

▶ Compliance: CE, ATEX / IECEx, SIL certification

Industry Applications

Applied in combustion airflow, tank hydrostatic gauging, filter/clogging DP and process level measurement spare replacement.

Note: Confirm range code (STD725/735/775), wetted material, process connection and hazardous-area approval before ordering