PT681L SERIES

PT681L Smart Flush Diaphragm Pressure Transmitter

PT681L Smart Flush Diaphragm Pressure Transmitter is designed for accurate pressure measurement of viscous, corrosive and crystallizing media. Featuring a flush diaphragm design, monocrystalline silicon sensing technology and HART communication, it delivers reliable performance for demanding industrial process applications.

Accuracy 0.05% FS to 0.2% FS

Pressure Range 0~40bar

Output 4–20 mA / HART

Typical Applications

Energy Food Hydraulic Industrial

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Technical Specifications

MEASUREMENT PERFORMANCE

Pressure Range

0~40bar

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

PT681L Smart Flush Diaphragm Pressure Transmitter is designed for reliable pressure measurement of viscous, corrosive and contaminated process media.

Its flush diaphragm construction minimizes material buildup and simplifies cleaning, making it suitable for applications where conventional threaded pressure ports may become blocked. Combined with advanced monocrystalline silicon sensing technology, the transmitter provides excellent accuracy, long-term stability and dependable performance.

Supporting HART communication, the PT681L enables remote configuration, diagnostics and process monitoring, making it ideal for modern industrial automation systems.