PT681A SERIES

PT681A Smart Absolute Pressure Transmitter

PT681A Smart Absolute Pressure Transmitter is designed for accurate and reliable absolute pressure measurement in industrial process applications. Featuring advanced monocrystalline silicon sensing technology, HART communication and excellent long-term stability, it delivers dependable performance for process control, chemical processing and industrial automation.

Accuracy 0.05% FS to 0.2% FS
Pressure Range 0-0.25bar.A / 0-200bar.A / More Options
Output 4–20 mA / HART
Energy Food Hydraulic Industrial

Technical Specifications

MEASUREMENT PERFORMANCE

Pressure Range
0-60bar.A / 0-0.25bar.A / 0-200bar.A
Accuracy
0.05% FS / 0.1% FS / 0.2% FS / 0.075%F.S

FUNCTIONS & DISPLAY

Display
LCD

ELECTRICAL & COMMUNICATION

Output
4–20 mA / HART
Power Supply
12~45 VDC

MECHANICAL

Process Connection
G1/2 / 1/4 NPT / 1/2 NPT / M20×1.5 / Others / 1/2 BSPP
Weight
3–10 kg

ENVIRONMENTAL

Operating Temperature
-40~85°C
Protection
IP65

Product Overview

PT681A Smart Absolute Pressure Transmitter is engineered to provide accurate and stable absolute pressure measurement for a wide range of industrial applications.

Built with advanced monocrystalline silicon sensing technology, it offers high measurement accuracy, excellent long-term stability and reliable performance under demanding operating conditions. The transmitter supports HART communication for remote configuration, diagnostics and process monitoring, making it an ideal solution for modern industrial automation systems.

The PT681A is widely used in chemical processing, petrochemical plants, power generation, water treatment and industrial process control where dependable absolute pressure measurement is required.

Key Specifications

  • Monocrystalline Silicon Sensor Technology
  • Accuracy up to ±0.05% URL
  • 4–20 mA with HART Communication
  • Turndown Ratio up to 20:1
  • Excellent Long-Term Stability
  • Double Diaphragm Overload Protection
  • 355° Rotatable Display
  • High Reliability Design
  • Transient Voltage Protection
  • Industrial Process Measurement

Typical Applications

  • Absolute Pressure Measurement
  • Process Control Systems
  • Chemical Industry
  • Petrochemical Industry
  • Oil & Gas Industry
  • Power Generation
  • Water & Wastewater Treatment
  • Industrial Automation
  • Tank Pressure Monitoring
  • Vacuum Process Monitoring

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Custom Manufacturing

When the conventional products can not meet your needs, we can provide you with customized services according to the technical parameters.

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