WZPB-241M WZPB-241S WZPB-241GM WZPB-241GS Explosion-proof Integrated temperature transmitter

WZPB-241M WZPB-241S WZPB-241GM WZPB-241GS Explosion-proof Integrated temperature transmitter

Overview

WZPB-241M WZPB-241S WZPB-241GM WZPB-241GS Explosion-proof Integrated temperature transmitter integrates the thermocouple (resistance) with the transmitter, directly measures the temperature of liquid, steam and gas medium in the range of -200~800℃ in various industrial processes, and converts the temperature into the temperature of the thermocouple thermal resistance. Or the 4~20mADC unified output signal proportional to the output electrical signal is sent to display, record and adjust the instrument or computer. The explosion-proof performance of explosion-proof and intrinsically safe thermocouple (resistance) temperature transmitters is designed and manufactured according to the standard of "Explosion-proof Electrical Equipment for Explosive Environments" (GB3836) promulgated by the state.

The safety supervision station has passed the test. It is an ideal temperature sensor and transmission integrated product for explosive environments. It can be used in dangerous places with flammable gas or flammable liquid vapor. The intrinsically safe temperature transmitter with thermocouple (resistance) must be combined with the safety barrier of related equipment. Explosion-proof system, explosion-proof certificate number: GYB 93265, 93266, 97336, 97337. As a new generation of temperature transmitter, it can be widely used in metallurgy, petroleum, chemical industry, electric power, light industry, textile, food, national defense and scientific research and other departments.

Explosion-proof cable distribution parameters control range of intrinsically safe temperature transmitter with thermocouple: total inductance ≤ 2mH. Total capacitance≤0.06uF.

Feature of WZPB-241M WZPB-241S WZPB-241GM WZPB-241GS Explosion-proof Integrated temperature transmitter

The transmitter components are miniaturized and placed in the junction box of explosion-proof and intrinsically safe thermocouples (resistors) to become an integrated temperature transmitter for use in industrial sites.
As an explosion-proof integrated temperature transmitter, it can directly output a 4-20mA signal in the industrial field, which not only saves expensive compensation wires, but also improves the anti-interference ability during long-distance signal transmission.

The transmitter components have high precision, low power consumption, a wide range of ambient temperature, stable and reliable work, and because of the silicone rubber sealing structure, the transmitter is shock-resistant, temperature-resistant, moisture-resistant, and explosion-proof, suitable for various harsh field environments. Install and use.
The explosion-proof temperature transmitter with thermocouple (resistance) isolation is selected, and its input and output terminals are isolated to increase the anti-mode interference ability, which is more suitable for computer use.

Flameproof and intrinsically safe temperature transmitters with thermocouple (resistance) adopt the flameproof structure, so when the explosive gas mixture inside the shell explodes, the shell will not be destroyed, and the resulting heat energy will flow along the shell. The tiny gap with sufficient connection length is slowly transmitted to the outside of the shell. At this time, the instantaneous temperature of the gas transmitted to the outside of the shell is not enough to ignite the explosive gas in the outside world, that is, it will not cause an explosion. The flameproof type with thermocouple ( Resistance) The explosion-proof category of the temperature transmitter is dⅡBT4, dⅡBT6, or dⅡCT4, dⅡCT6, and the explosion-proof category of the intrinsically safe type is idⅡBT4, idⅡBT4 (multi-pair type). performance.

Tech data sheet of WZPB-241M WZPB-241S WZPB-241GM WZPB-241GS Explosion-proof Integrated temperature transmitter

Accuracy class of platinum thermal resistance: Class B
Graduation number: Pt100. (Resistance value at 0°C)
R=1000.12Ω (Class B)
Allowable deviation: Δt(℃)±(0.30+0.005∣t∣) (Class B)
Input: Thermocouple: K, E
Thermal resistance: Pt100
Output: Output 4-20mA DC signal in the range, which is linear with the input electrical signal of the thermal resistance or linear with the millivolt signal input by the thermocouple, linear with the measured temperature of the thermal resistance or linear with the measured temperature of the thermocouple .
Note: The output of the isolated temperature transmitter is isolated, and the isolation voltage is 0.5KV.

Basic error: calculation formula Δ=Δ1+Δ2
Δ1 thermocouple (resistance) allowable deviation
Δ2 transmitter basic error ±0.5%FS
Transmission method: two-wire system
Transmitter working power: low voltage 12V, high 35V, rated working voltage 24V.
Load: The ultimate load resistance is calculated by the following formula
RL (max)=50×(Vmin-12) (that is, the load resistance can be selected in the range of 0~600Ω at 24V, and the rated load is 250Ω.)
a. Ambient temperature: -25℃～80℃ (hazardous place not higher than 70℃).
b. Relative humidity: 5% to 95%.
c. Mechanical vibration: f≤55Hz, amplitude <0.5mm
d. The surrounding air does not contain the medium that causes the transmitter to corrode.
Explosion-proof grade:
Flameproof type: dⅡBT4 dⅡBT6 or dⅡCT4 dⅡCT6
Intrinsically safe: ibⅡBT4 iaⅡBT4 iaⅡCT6 (multi-pair type), related equipment models MTL728, Z928, LB928.
Shell protection grade: IP65

Electromotive force tolerance