WR □ Explosion proof thermocouple Explosion proof armored thermocouple

1、 Product Introduction Product introduction

WRSeries industrial explosion-proof and intrinsic safety thermocouples are temperature sensors widely used in chemical industry automation systems. Through temperature sensors, the temperature parameters of the controlled object can be converted into electrical signals and transmitted to display, record, and regulate instruments to detect, regulate, and control the system.

WR Series For industrial use Flameproof, Intrinsically safe type thermocouple Is akind of temperature sensor, In the chemical industry in the automatic controlsystem of wide application, Through the temperature sensor, Can put the controlobject The temperature parameter to electrical signal, Transferred to display,record and control instrument, On the system The implementation of inspection,regulation and control.

In chemical plants, various flammable and explosive chemical gases and vapors are often present on the production site. Using ordinary thermocouples is very unsafe and can easily cause environmental gas explosions. Therefore, in these situations, explosion-proof or intrinsic safety thermocouples must be used as temperature sensors. Our company produces explosion-proof or intrinsic safety thermocouple products that are suitable for use inEXdIICT1~dIICT6In places with explosive gas hazards within the temperature range.

In the chemical plant, The production siteis often accompanied by a variety of flammable, Explosive chemical gas, Steam,If using the ordinary thermocouple very unsafe, Extremely easy to causeenvironment gas explosion. Therefore, In these situations must use flameproofOr intrinsically safe type thermocouple as temperature sensor, The companyproduction of Flameproof Or intrinsically safe type thermocouple productsApplicable in EX dIICT1~dIICT6 Temperature group interval With explosive gasesin dangerous places.

The technical performance of the explosion-proof or intrinsic safety thermocouples produced by our company meets the requirementsZBN11002-2010Technical conditions and specifications for industrial thermocouplesZBY300-2010Industrial thermocouple calibration table and allowable error, and all products meet the general requirements for explosion-proof electrical equipment used in explosive environmentsGB3836.1~2010TheGB3836.2-2010The national level explosion-proof safety supervision and inspection station shall conduct specialized review and approval of product drawings, technical documents, and prototypes, and provide explosion-proof certificates and explosion-proof thermocouple certificates with the following numbers:CNEx19.4449X.

Company production of Flameproof Orintrinsically safe type thermocouple Technical performance in line withZBN11002-2010 Industrial thermocouple Technology conditions And ZBY300-2010Industrial thermocouple indexing table And permissible error, At the same timeproduct Accord with the used in explosive environment Explosion proofelectrical equipment General requirements GB3836.1~2010TheGB3836.2-2010Standard, By the national Explosion-proof instrument of safety supervision andinspection station On the product pattern, Technical documents, PrototypeSpecial Examination and approval, And to give the explosion-proof certificate,Explosion proof thermocouple certificate no.: CNEx19.4449X.

Intrinsic safety thermocouples must use intrinsic safety compensation wires, with a distributed parameter control range of total inductance≤2mH, capacitance≤0.06mAt the same time, using associated device safety barriers, the selection of associated devices follows the principle of thermocouples(It must be insulated)When equipping secondary instruments, they must be selectedFBSeries safety barriers, the specific wiring of the safety barriers can be found in the product manual.

Intrinsically safe type thermocouple Youmust use the intrinsically safe compensation wire, The distributed parametercontrol range: The total inductance ≤2mH，Capacitance≤0.06μ，At the same time, the use of Associated equipmentsafety gate, The device context Selection Press the principle,Thermocouple(must be insulated type) With two instruments, Must be selected FBseries of safety barrier, Safety grid Specific wiring See specific productspecifications.

2、 Principle structure Operational principle

The structure and principle of explosion-proof or intrinsic safety thermocouples are basically the same as those of prefabricated thermocouples, but the difference is that the explosion-proof or intrinsic safety product junction box(shell)In terms of design, a special explosion-proof structure is adopted, and the junction box is made of high-strength aluminum alloy die-casting, with sufficient internal space, wall thickness, and mechanical strength. The thermal stability of the rubber sealing ring meets the national explosion-proof standards. So, when the explosive gas mixture inside the junction box explodes, its internal pressure will not damage the junction box, and the resulting heat energy cannot diffuse outward—Spread the word.

Flameproof Or intrinsically safethermocouple And the assembly type thermocouple Structure, The same basicprinciples,The difference is, Flameproof Or intrinsically safe product Junctionbox (shell) In the design of the Explosion proof special structure, Wiring boxfor high strength aluminum alloy die-casting and, And has sufficient internalspace, Wall thickness and mechanical strength, The rubber sealing ring Thermalstability Are in line with national standards for explosion proof. So, When thewiring inside the box Explosive gas mixture When the explosion, The innerpressure Will not damage the junction box, The resulting Heat energy can not beoutward diffusion of detonation.

Due to the use of the above-mentioned explosion-proof special structure, the product fully complies with the requirements for use indIIBT4todIICT6TheibBT4TheiaIICT6Within the scope of explosion-proof category, as long as users strictly follow the product usage rules, the product can achieve reliable explosion-proof effect.

Because the product uses Theexplosion-proof special structure, The product fully meets the use in dIIBT4 TodIICT6TheibBT4TheiaIICT6Explosion proof class scope, As long as the user Products in strict compliancewith the rules of use, The product can achieve reliable Explosion proof effect.

3、 Technical parametersTechnical parameter

4、 Selection Chart Selection chart

5、 Model specifications Model specifications

6、 Product classificationProduct classification

The above parameters are for reference only and are subject to change without prior notice!

Above parameters arefor reference only and are subject to change without prior notice!