Remote Diaphragm Transmitters – SmartLine STR700

SmartLine® ST700 Remote Diaphragm Seal Transmitters provide accurate measurement in a wide variety of applications involving corrosive or high-temperature process fluids.

With better performance, modular construction, additional diagnostics and the best integration features, Honeywell SmartLine® transmitters help you reduce project costs and startup time, avoid unplanned downtime, improve product quality, reduce spare parts inventory and shorten time to repair. Helps you get the right instrument for your application. The tool enables error-free selection and validation of the instrument through efficient online collaboration. The tool documents your selection inputs and helps you share it with others. The ordered instrument arrives fully preconfigured, shortening commissioning time.

Sensor & Technology

Uses piezoresistive sensor technology with on-chip temperature compensation for high accuracy and stability.

Supports static pressure & temperature compensation automatically.

Accuracy & Rangeability

Accuracy: up to ± 0.075% of span (standard) for many models.

Rangeability / Turndown ratio: up to 100:1.

Pressure Ranges / Models

STR73D / STR735D: –100 … +100 psig (–7 to +7 bar) span 1 … 100 psig (0.07 to 7 bar).

STR74G / STR745G: –500 … +500 psig (–35 to +35 bar) span 5 … 500 psig (0.035 to 35 bar).

Seal / Mounting Options

Honeywell supports a variety of remote-seal configurations:

Process Solutions

Flush flange seals

Extended diaphragm seals

Pancake seals

Sanitary seals

Chemical-tee / Taylorwedge seals

Threaded connection seals

Saddle seals

Calibration rings

Capillaries: stainless steel armor, PVC coated

2″ stainless nipples, welded meter body

Communication Protocols

HART® (Version 7)

Honeywell Digitally Enhanced (DE)

FOUNDATION™ Fieldbus

Diagnostics & Safety

Comprehensive on-board diagnostics.

Integral dual-seal design for safety per ANSI/NFPA 70-202 and ANSI/ISA 12.27.0.

Overpressure protection.

Functional Safety: SIL 2 / SIL 3 capable.

Display / Configuration

Alphanumeric LCD display.

External zero, span, and configuration capability.

Polarity-insensitive electrical connections (i.e., easier installation, less risk of wiring errors).

Environmental & Mechanical

Designed to work with harsh / high-temperature process fluids.

Modular design enables different remote-seal configurations depending on process requirements.

Compatible with Experion® PKS (Honeywell control system) for tight integration.

Certifications / Compliance

Complies with SIL 2 / SIL 3 for functional safety.

Meets ANSI/NFPA 70-202 and ANSI/ISA 12.27.0 safety standard for dual-seal design.

Features

  • Ideal for corrosive or high-temperature fluids (because of remote diaphragm seal).
  • Useful for level measurement in pressurized vessels (especially hydrocarbon processing).
  • Suitable for flows with slurries, high-viscosity fluids, or fluids containing solids.
  • Also applicable in sanitary or chemicaltee installations.