Honeywell Flange Mount Transmitters - SmartLine STF700

Honeywell Flange Mount Transmitters - SmartLine STF700
SmartLine® ​​ST700 Flange Mount Pressure Transmitters may be installed directly onto a tank flange and are offered with a variety of tank connections.
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Product Description

Introduction

Part of the SmartLine® family of products, the STF700 is a flange mounted level transmitter suitable for monitoring, control and data acquisition featuring piezoresistive sensor technology. STF700 transmitters may be directly mounted onto a tank flange and are offered with a variety of tank connections including various flush and extended diaphragm configurations. STF700 offers high accuracy and stability over a wide range of level applications. The SmartLine family is also fully tested and compliant with Experion ® PKS providing the highest level of compatibility assurance and integration capabilities. SmartLine easily meets the most demanding application needs for pressure measurement applications. 


Best in Class Features: 

• Accuracies up to 0.05% of span standard & 0.04% of span optional. 

• Stability up to 0.020% of URL per year for 10 years. 

• Automatic static pressure & temperature compensation.

• Rangeability up to 100:1. 

• Response times as fast as 100ms.

 • Easy to use and intuitive display capabilities. 

• Intuitive External zero, span, & configuration capability. 

• Comprehensive on-board diagnostic capabilities. 

• Integral Dual Seal design for highest safety based on ANSI/NFPA 70-202 and ANSI/ISA 12.27.0. 

• World class overpressure protection. 

• Full compliance to SIL 2/3 requirements. 

• Modular design characteristics. 

• Available with additional 4-year warranty. 

• Supports NAMUR NE-107 Extended Diagnostics


The ST700 Flange Mount Pressure Transmitters are ideal for critical applications such as natural gas custody transfer and energy and material balances, where accuracy and stability are of utmost importance. Four ranges are available:

STF724/ STF725 -400 to 400 in H2O             -1000 to 1000 mbar
STF732/ STF735 -100 to 100 psi                   -7.0 to 7.0 bar
STF72F -400 to 400 in H2O           -1000 to 1000 mbar
STF73F -100 to 100 psi                   -7.0 to 7.0 bar

STF700-700LE-with-standard-display

STF700

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Products Recommended

Pressure Transmitters for Industrial Pressure Measurement

Xinyi Instrument supplies pressure transmitters for process control, hydraulic systems, petrochemical plants, water treatment, HVAC, power generation and general industrial pressure monitoring. Our pressure transmitter range covers gauge pressure, absolute pressure, differential pressure, high temperature media and digital communication applications.

Choose from compact pressure transmitters, smart 3051 differential pressure transmitters, diaphragm seal models, RS485 digital pressure transmitters and high frequency dynamic pressure sensors. Standard outputs include 4-20 mA, voltage output, HART and RS485 Modbus options, with stainless steel wetted parts and custom process connections available on request.

Pressure Transmitter Parameters

Pressure Types Gauge, absolute, negative pressure, differential pressure
Measuring Range From low differential pressure to high pressure ranges up to 100 MPa, depending on model
Output Signals 4-20 mA, 0-5 V, 1-5 V, 0-10 V, RS485 Modbus, HART options
Accuracy Typical options include 0.1%, 0.2%, 0.25% and 0.5% FS
Process Connection M20 x 1.5, G1/4, G1/2, NPT and customized thread connections
Wetted Materials Stainless steel, 316L diaphragm and corrosion-resistant sealing options
Media Water, oil, gas, air, steam and compatible liquid or gas media
Applications Pipeline pressure, tank level, flow differential pressure, hydraulic pressure and automation systems

Recommended Pressure Transmitter Series

  • Xinyi YW-150 - differential pressure transmitter for stable industrial measurement.
  • Xinyi YW-3051DP - smart differential pressure transmitter for process control.
  • Xinyi YW-130 / YW-140 - compact pressure transmitters for general pressure monitoring.
  • RS485 Digital Pressure Transmitter - Modbus communication for remote monitoring systems.
  • High Temperature Pressure Transmitter - designed for hot media and demanding process conditions.
  • Siemens, Yokogawa and ABB Options - international brand transmitters available for project matching.

Pressure Transmitter FAQ

What is a pressure transmitter used for?

A pressure transmitter converts the pressure of liquid, gas or steam into a standard electrical signal for PLC, DCS, recorder or control instrument input. It is widely used for pipeline pressure, tank level, flow measurement and process safety monitoring.

How do I choose the right pressure transmitter?

Confirm the pressure range, pressure type, medium, temperature, output signal, accuracy, installation thread, electrical connection and environmental requirements. For corrosive media, high temperature or sanitary applications, diaphragm material and sealing structure are especially important.

What is the difference between gauge, absolute and differential pressure transmitters?

Gauge pressure transmitters measure pressure relative to atmospheric pressure. Absolute pressure transmitters measure pressure relative to vacuum. Differential pressure transmitters measure the pressure difference between two points and are commonly used for flow, filter and level measurement.

Can Xinyi Instrument provide customized pressure transmitters?

Yes. Xinyi Instrument can support customized pressure ranges, process connections, output signals, cable length, display options and model selection for different industrial applications.