Supply (Wirth) all kinds of explosion-proof thermocouple, RTD

Supply (Wirth) all kinds of explosion-proof thermocouple, RTD
 

Product description:

• Features
Two-wire output 4-20mA, anti-jamming;
Saving temperature transmitter compensation wire and installation costs;
Safe, reliable, long life;
Automatic cold junction temperature compensation, nonlinear correction circuit;
•working principle
Thermocouple (Resistance) in the operating state of the measured thermoelectric power (resistance) changes, after the bridge temperature transmitter unbalanced signal after amplification 4-20mA converted into an electrical signal to the working instruments, working instrument will show the corresponding temperature value.
Flameproof Thermocouple (Resistance) the use of space explosion principle, when the cavity explosion, through the gap between the flame and cooling joints, so that after the explosion of flame and temperature not pass outside the cavity, thereby performing temperature. Thermocouple (Resistance) produced by thermoelectric power (resistance value) after the bridge temperature transmitter unbalanced signal after amplification converted into 4-20mA DC signal to the workers in the instrument, the working instrument shows the corresponding temperature value.

•The main technical parameters
Product performance standards
IEC584
IEC751
IEC1515
JB / T5518-91
JB / T7391-94
• measuring range and tolerance
1) Thermal resistance Temperature range and tolerance

Model sub-degree temperature range ℃ Accuracy class Tolerance WZPB Pt100 -200- + 500

A Grade B Grade

± (0.15 + 0.002ItI)

± (0.30 + 0.005 ItI)

WZCB Cu50 Cu100 -50- + 100 (±)
0.30 + 0.005 ItI) 2 Thermocouple
Temperature range and tolerance models indexing number tolerance value tolerance level III temperature range ℃ temperature range tolerance value WRNB K ± 1.5 ℃ -40-375 ± 2.5 ℃ -40-333 ± 0.004 ItI 375-1000 0.0075 ItI 333-1200 WRMB N ± 1.5 ℃ -40-375 ± 2.5 ℃ -40-333 ± 0.004 ItI 375-1000 0.0075 ItI 333-1200 WREB E ± 1.5 ℃ -40-375 ± 1.5 ℃ -40-333 ± 0.004 ItI 375-800 0.004 ItI 333-900 WRFB J ± 1.5 ℃ -40-375 ± 1.5 ℃ -40-333 ± 0.004 ItI 375-750 0.004 ItI 333-750 WRCB T ± 1.5 ℃ -40-125 ± 1 ℃ -40- 133 ± 0.004 ItI 125-350 0.0075 ItI 133-1000: output signal
4-20 mA, load resistor 250, a transmission line resistance 100: output method
Wire system:
Accuracy: temperature transmitter accuracy class
0.1 0.2 0.5: Display Accuracy class

Analog indication type 2.5; digital display type 0.5: Power supply.
24V.DC ± 10℅: Protection class
IP65 Explosion:
Level: flameproof
dⅡBT4 dⅡCT5 dⅡCT6: Intrinsically Safe
iaⅡCT6: Insulation resistance
Insulation resistance meter between the output terminals and the case should not be less than 50 .:
Thermal response time When the temperature step change occurs, the current output signal changes to the instrument that is equivalent to the time required for 50% step change, usually expressed when the step response t0.5 temperature transmitter stabilization time of less than (Thermocouple) resistance Stable thermal response time t0.5 fifth, then use (Thermocouple) resistance Thermal response time as the thermal response time of the instrument; heat temperature transmitter when the step response settling time is not more than (Thermocouple) resistance
Stable thermal response time t0.5 of one-half, then the temperature transmitter thermal response time as the thermal response time of the instrument;:
Basic error The basic error of the meter shall not exceed (Thermocouple) resistance
And temperature transmitters synthesis error basic error: product name Explosion-proof Thermocouple: Product description: a
Outline Industrial Explosion , Thermocouple Thermal resistance
As the temperature measurement and control sensor and display instrument to directly measure and control the temperature of the production process gases, liquids and vapors. I plant the production of chemical-specific flameproof , Thermocouple Thermal resistance product Explosion-proof Performance according to the state promulgated 'explosive atmospheres Explosion-proof Appliances' design and manufacturing standards, thermoelectric properties in line with international IEC standards, and by the National Instruments Explosion-proof
Safety Supervision Station tested. Flameproof , Thermocouple Thermal resistance (structure, principle and assembly mode is basically the same, the main difference is explosion-proof junction box product) housing In the design of high-strength aluminum alloy die-casting, and has enough internal space, wall thickness and mechanical strength, thermal stability of the rubber seals are in line with national Explosion-proof Standard So when an explosive mixture inside the junction box exploded, its internal pressure will not damage the junction box, and the resulting heat can not spread out - Booster product as long as strict compliance with the rules of the user, the product can achieve reliable Explosion-proof
Effect: II.
Feature Multiple Explosion-proof form. Explosion-proof
Good performance;
Compression spring-type temperature sensing element, anti-vibration performance;
Temperature range;
High mechanical strength, good pressure resistance;: Three
working principle Explosion-proof thermocouple
Proof principle is the use of space, junction boxes and other components designed to have sufficient strength, all will produce sparks, arcs and dangerous temperature of the components are sealed in the junction box cavity, the cavity when the explosion occurred, through the joints clearance flameout and cooling, after the explosion of flame and temperature not pass outside the cavity, thereby performing explosion: Four
The main technical parameters
Product performance standards
IEC584
IEC1515
GB / T16839-1997
JB / T5582-91
GB3836: five
Insulation resistance at room temperature Thermocouple (at an ambient temperature of 20 ± 15 ° C, relative humidity less than 80%, the test voltage is 500 ± 50V) DC) insulation resistance between the electrode and the jacket pipe
1000Ω.m: six
Measuring range and tolerance models indexing number tolerance level I II ° C temperature range tolerance value

Tolerance Value

Temperature range ° C

WRN K ± 1.5 ° C -40 ~ + 375 ± 2.5 ° C -40 ~ + 333 ± 0.004ltl 375 ~ 1000 ± 0.0075 ltl

333~1200

WRM N ± 1.5 ° C -40 ~ + 375 ± 2.5 ° C -40 ~ + 333 ± 0.004 ltl 375 ~ 1000 ± 0.0075 ltl 333 ~ 1200 WRE E ± 1.5 ° C -40 ~ + 375 ± 1.5 ° C -40 ~ +333 ± 0.004 ltl 375 ~ 800 ± 0.004 ltl 333 ~ 900 WRF J ± 1.5 ° C -40 ~ + 375 ± 1.5 ° C -40 ~ + 333 ± 0.004 ltl 375 ~ 750 ± 0.004 ltl 333 ~ 750 WRC T ± 1.5 ° C -40 ~ + 125 ± 1 ° C -40 ~ + 133 ± 0.004 ltl 125 ~ 350 ± 0.0075 ltl 133 ~ 350