High sensitivity 4-20mA PT100 temperature transmitter
WR-203 Series temperature transmitter is composed of three parts as temperature sensor, compensation circuit and switching circuit. It has the advantages of stable performance, high sensitivity, and strong reliability. It can be widely used in automation temperature control system, such as metallurgy, machinery, petroleum, electricity, chemical industry, light industry, textile, building materials and so on.

Work principle
The thermocouple (resistance) measure the changes of thermal
power (resistance) when working, which will produce unbalance
signal through the temperature transducer’s bridge, and the
signal will be amplified and converted into 4-20mA DC signal to
the instrument, then the instrument will display the corresponding
temperature value.

Typical application
This series products is used to measure the temperature of the surface of liquid, steam, gas and solid under -50 to +600℃. It is suitable for temperature measurement in water supply, hydraulic pressure, cooling, heating system industry and automatic control.

Specification
Temperature range: -50 to +600℃
Output: 4-20mA (2-wire) ,0-10V ( 3-wires)
Power supply: 10～30VDC
Error: 0.1%FS, 0.3%FS, 0.5%FS
Media compatibility: 316L stainless steel
Process connection: Thread
Protection tube: Stainless steel, 5mm, 6mm and 8mm dia.
Insert length (L): 30mm<L<500mm
Sensing element: PT100 temperature sensor
Electrical connector: DIN43650 (IP65)

Shanghai Zhaohui Pressure Apparatus Co.,Ltd. (ZHYQ) is the leading professional manufacturer in the industrial of pressure, flow, temperature, liquid level and Internet of Things (IoT).

ZHYQ found in 1999, based on the physical quantity of pressure, flow, temperature and level, developed a series of large scale and professional measurement products.

ZHYQ is ISO9001 (2015) Quality management certificated company, we acquired the certificates of CMC, Ex, MA, CE, RoHS and etc, till now we have applied for 7 Invention patents and more than 50 utility model patent technologies.

In recent years, ZHYQ actively expands the capacity and enhances to develop new products to meet the requirement of the market, found R&D center covers 1500㎡ and production base covers 10000㎡, annual yield more than 1 million pieces , the produces are widely used in the field of industrial process control, energy & electricity, hydrology, construction machinery, medical experiment, military equipment and etc, our market spread all over the world with more than 50 countries and areas.