Explosion-proof watch

Liquid pressure thermometers and the series of temperature instruments developed from them overcome the shortcomings of the original instruments, such as single performance, poor reliability, and large bulb volume. The volume of the temperature sensing element is reduced to 1/30 or 1/60 of the original, and the sensor thermal resistor is innovatively installed inside the temperature sensing element, achieving an integrated electromechanical temperature measurement function. This has led to the formation of a multifunctional and serialized range of temperature instruments, including remote transmission, explosion-proof, shockproof, corrosion-resistant, electrical contact, and temperature signal transmitters, with the liquid pressure thermometer as the basic temperature measurement instrument.

Model Description

WTZ口-28口口  Where: W stands for thermometer; T stands for pressure type; Z stands for filled evaporative liquid; 口, when d, indicates explosion-proof, with no marking for standard type; 2 indicates pointer type; 8 indicates a 270-degree scale; 口 as 0 indicates single indication; as 8 indicates electrical contact dual upper limit; as 7 indicates electrical contact single upper limit; as 6 indicates electrical contact upper and lower limits; as 5 indicates Pt100 output; as 4 indicates thermocouple output; as 3 indicates 0~100mA or 4-20mA output; z indicates shockproof type.

Specifications and Parameters

Ambient temperature: -20 to +40°C, relative humidity less than 95%, altitude less than 2000 meters.
Indication accuracy: Class 1.5.
Time constant: 34 seconds.

Platinum thermal resistance accuracy class: Performance indicators comply with international IEC751-83 and national ZBY301-85 standards, accuracy class B.
Temperature measurement range: -40 to 500°C. Platinum thermal resistance excitation current 5mA.

Insulation class: Class F.

Standard Type

WTZ-280(z) Liquid pressure single-indication shockproof thermometer

WTZ-288 Liquid pressure electrical contact dual upper limit thermometer;

WTZ-287 Liquid pressure electrical contact single upper limit thermometer;

WTZ-286 Liquid pressure electrical contact upper and lower limit thermometer

WTZ-285(z) Liquid pressure platinum thermal resistance remote transmission thermometer (shockproof);

WTZ-284(z) Liquid pressure thermocouple remote transmission thermometer (shockproof);

WTZ-283(z) Liquid pressure platinum thermal resistance temperature transmitter thermometer (shockproof)
Explosion-Proof Type

WTZd-288 Liquid pressure explosion-proof electrical contact dual upper limit thermometer

WTZd-287 Liquid pressure explosion-proof electrical contact single upper limit thermometer;

WTZd-286 Liquid pressure explosion-proof electrical contact upper and lower limit thermometer;

WTZd-285(z) Liquid pressure explosion-proof platinum thermal resistance remote transmission thermometer (shockproof)
WTZd-284(z) Liquid pressure explosion-proof thermocouple remote transmission thermometer (shockproof);

WTZd-283(z) Liquid pressure explosion-proof platinum thermal resistance temperature transmitter thermometer (shockproof);

Unit: Nanyang Tongchang Technology Co., Ltd.

Contact: Mr. Zhang

Mobile: 15203886126

Tel: 400-0663605

QQ: 3512236935

E-mail: 3512236935@qq.com

Website: tc.258377.com