Flameproof Temperature Transmitter In China

Contact Us

  • Shanghai Zhaohui Pressure Apparatus Co., Ltd.
  • 5 / 6F,building 8#, NO. 115, Lane 1276, Nanle Road, Songjiang District, Shanghai, China
  • +86-21-67755188 67755189
  • +86-21-67755185
  • +86-15021723851
  • http://www.zhyqsensor.com

Flameproof Temperature Transmitter

Description:

Description

WR-207 is integrated temperature transmitter uses PT100, N, K, J and other temperature sensing components, through the circuit processing module to convert the resistance signal into a standard 4-20mA current signal, widely used in chemical automatic control systems, and transmitted to Indicators, recorders and regulators for monitoring, regulating and controlling industrial systems. It not only saves expensive compensation wires cost , but also improves the anti-interference ability of signals during long-distance transmission. The transmitter is high precision, low power consumption, wide temperature range, stable and reliable operation, and is resistant to shock and moisture due to the silicone rubber sealing structure, which is suitable for use in harsh field environments.

 

Explosion-proof Principle
It uses the gap flameproof principle and designs the sufficient strength junction box and other part. All the components which can cause a spark, arc and dangerous temperature are sealed in the junction box When it happen explosion in the cavity, the joint side can make flameout and cool, to prevent the flame and temperature after explosion from spreading out of the cavity.



Application           
In chemical plant, there are various flammable and explosive chemical gases around the production site. It’s unsafe and easy to cause environmental gas explosion if use common thermocouples,

it needs to use flameproof thermocouple as temperature measurement instrument in these cases.



Main technical indexes of thermocouple

Material

Type

Temperature Range

Error/ t

Ni/Ch-Ni/Si

K

800-1600

±2.5 or±0.75%t

Ni/Ch-Cu

E

600-800

±2.5 or ±0.75%t

Cu

T

350-400

±2.5 or ±0.75%t

Fe-Cu

J

600-700

±2.5 or ±0.75%t

Pt

PT100

-200-600

±1 or ±0.75%t

Cu

CU50

-50~100

±2.5 or ±0.75%t


Features

Easy assembly and easy replacement

Good shakeproof and high precision

Wide measuring range (-200 ° C ~ 1600 ° C)

Fast thermal response time and long service life

High mechanical strength and good pressure resistance

Suitable Explosion proof area



Specification              

Temperature Sensing element:

N,R,K,E,J,T,PT100,CU50

Temperature range:

-200~0~1600

Output: 

mV/V , 4-20mA, HART optional

Local display:

LCD optional

Power supply:

10VDC (mV/V) , 24VDC (4-20mA /HART)

Accuracy class:

Class A: +/- (0.15+0.2%t); Class B: +/- (0.3+0.5%t)

Electrical connector:

waterproof, explosion-proof

Process connection:

M20*1.5, G1/2 , G1/4 ,flange, customized

Insert tube diameter (D):

6mm ,8mm ,12mm ,customized

Insert tube length (L):

8mm<L<800mm

Insert tube material

SS304 ,SS316L optional