[EDN.730: Pressure Transmitter with All st.steel housing and Bright, Clear LCD Display]

-       Housing made of st. steel.

-       Stainless steel wetted parts

-       Accuracy 0.5%, 0.25% & 0.15%

-       LCD on white backlight

 

The EDN.730 series pressure transmitter is built with a stainless steel housing, making it highly resistant to corrosion and external ingress even under harsh environmental conditions, such as those involving acidic substances or toxic gases. Its robust design makes it suitable for demanding applications in the food and beverage industry, medical and pharmaceutical sectors, as well as the biotechnology field.

 

The pressure sensor incorporated in the EDN.730 is a piezoresistive silicon sensor mounted on a stainless steel diaphragm and gold-plated. This specialized configuration was developed specifically for measuring hydrogen pressure in either liquid or gas form. The use of a gold-plated sensor is essential due to hydrogen’s embrittlement properties and its ability to penetrate metal lattices at the atomic level.

 

The EDN.730 also offers outstanding accuracy and long-term stability. By utilizing cutting-edge electronic components and the latest PCB chip design, this transmitter delivers exceptional precision and durability. The signal amplification electronics have been engineered to the highest standards, incorporating advanced protection technologies against noise, bursts, insulation failure, and surges. Every unit undergoes 100% inspection as part of Daho’s comprehensive quality control system to ensure reliable analog and communication signal output.

 

This series supports RS485 signal communication and includes two channels for relays and switches, allowing users to configure the device according to their specific operational requirements.

 

■    RS485 communication

■    2 channel relays [2 switches]

 

During development, the EDN.730 underwent over ten rigorous performance comparison tests alongside similar domestic and international products to meet various industrial requirements. Furthermore, the transmitter achieved top-tier results in EMC and EMI performance tests under harsh industrial environments – demonstrating its reliability against high temperatures, electrical noise, and burst conditions.

 

● Hydrogen refueling station

● Hydrogen transport trailer operators

● Hydrogen storage facilities

● Shipbuilding – hydrogen storage and transportation

● Hydrogen production, refining, and chemical industries

 

Additionally, we are in the process of obtaining the “Explosion-Proof Grade Ex d IIC T4” certification from the Korea Occupational Safety and Health Agency (KOSHA), with the certification expected to be issued by the end of June 2025 following a successful review and testing process.

[General Specifications]

Pressure ranges	-1…0 bar to 0…1000 bar
Accuracy	± 0.35% F.S [options] ± 0.25% ± 0.15% ± 0.05%
Electrical connection	Frameproof 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