■ EDN.820 Flush Diaphragm Pressure Transmitter (for Viscous Media)

-       Flush diaphragm for viscous media

-       Stainless steel wetted parts

-       Aluminum housing & body

-       Accuracy ±0.5%, ±0.25%, ±0.1% F.S

-       RS485 & relay switches [option]

 

■ Product Overview

The EDN.820 series is a pressure transmitter designed with a flush diaphragm structure, making it suitable for viscous media and hygienic environments.

 

All wetted parts are made of stainless steel, providing excellent corrosion resistance and durability, while the housing and body are made of aluminum to ensure cost efficiency and mechanical strength.

 

The standard process connection is G1/2”, and various sealing options such as FKM, EPDM, and metal O-ring are available.

 

It utilizes a piezoresistive silicon pressure sensor combined with advanced electronics and PCB design to achieve high accuracy and stability.

 

The internal circuitry is designed to minimize the effects of noise, burst, insulation, and surge, ensuring reliable operation in various industrial environments.

 

All units are fully calibrated under strict quality control procedures.

 

■ Pressure Measurement Principle

The EDN.820 measures pressure using a piezoresistive silicon pressure sensor.

 

The flush diaphragm allows direct pressure transmission even in viscous media, preventing clogging and ensuring stable measurement.

 

The pressure signal is converted, amplified, and output as a stable electrical signal.

 

■ Materials of Wetted Parts

Wetted parts are made of stainless steel, while the housing is made of aluminum.

 

Seal materials include FKM, EPDM, and metal O-ring options.

 

■ Accuracy Class

▶ ±0.5% F.S (standard)

▶ ±0.25% F.S (high accuracy)

▶ ±0.1% F.S (precision)

 

■ Communication & Switches

Optional features include:

 

▶ RS485 communication

▶ Dual relay outputs

 

■ Applications

▶ Food & beverage industry

▶ Pharmaceutical & medical industry

▶ Water & wastewater treatment

▶ Viscous media applications

▶ General industrial processes

 

■ General Specifications

Pressure ranges	-1…0 bar & 0…200 mbar to 0…250 bar
Accuracy	Standard: ± 0.5% F.S High accuracy: ± 0.25% Precision: ± 0.1%
Electrical connection	Cable gland M12 plug
Signal output	4...20 mA, 2 wire-system 0…10V, 3 wire-system 0…5V, 3 wire-system 1…5 V, 3 wire-system 0.5…4.5V, 3-wire system
Operating temperature	-20…+80 ℃ / standard -40…+125℃ / option
Options	Relay 2 switches RS485