Detail:
Product features:
Platinum resistance of industrial explosion is a kind of temperature sensor. In the industrial automation system, the application is very wide. Through the temperature sensor, the temperature parameter of the control object can be changed into electrical signal, which is transmitted to the display, record and adjust instrument. In chemical plants, the production site is often accompanied by a variety of flammable, explosive and other chemical gases, steam, if the use of ordinary platinum resistance is not very safe, very easy to cause environmental gas explosion. Therefore, in these cases, the D ZBY301-85 CT6 II temperature sensor, which is used in the temperature range of II BT4~d, is suitable for the temperature range of explosive gases. At the same time, the product is in line with the explosive environment with explosion-proof electrical equipment General requirements GB3836.2-83, GB3836.1-83 standards.
The main technical indicators
Range specification
Model
Index number
Temperature measurement range
Accuracy class
The allowable deviation of T C
WZP
WZP 2
WZPK
WZPK 2
-200~500 A PT100 (0.15+0.002|t|)
B level (0.30+0.005|t|)
Note: "t" is the absolute value of the temperature sensor, and the double platinum resistance is only supplied to the B level.
Heat resistance allows the current to pass
The current maximum of the platinum resistance is not more than 5mA.
Explosion-proof type and grade group
II BT4 D or II CT4 D; II BT6 D or II CT6 D
Shell protection class: IP54
Principle structure
The structure and principle of the thermal resistance and the thermal resistance are the same as that of the assembly type.
In the design, the use of special structure, connection box with high strength aluminum alloy, and has enough internal space, wall
The thermal stability of the rubber sealing ring is in accordance with the national standards for explosion. So, when the junction box of explosive mixed gas
When an explosion occurs, the internal pressure will not destroy the junction box, and the heat generated by the heat can not spread out and spread out.
As the product uses the above special structure, so that the product is fully in line with the use of II BT4 d to II CT6 D explosion-proof temperature
Within the range of the group, as long as the user strictly comply with the rules of the product, the product will be able to achieve a reliable explosion-proof effect.
Category, grade and temperature category of electrical equipment:
Electrical equipment is divided into two categories: I type - coal mine underground with electrical equipment;
II class - electrical equipment for factories
Explosion-proof grade
The explosion-proof grade of the thermal resistance of the insulation is used in the maximum safety clearance of explosive gas mixture into A, C, B three.
Temperature group
Across the tropical resistance temperature group burst according to the highest surface temperature of the exposed part is divided into six groups of T1~T6.
Type and specification of insulation resistance
Class model of the range of temperature range of temperature range
Material thermal response time T0.5S nominal pressure Mpa structure characteristic size of explosion-proof grade
Total length L (mm) l (mm)
PT100 -200~500 1Cr18Ni9Ti WZP-24SA stainless steel
Or 0Cr18Ni
12M02Ti is less than or equal to 90 10 flameproof junction box is fixed screw installation M27 * 2 explosion-proof junction box is fixed flange mounted 250 - 350 400 450 550 650 900 1150 100 200 250 300 400 500 to 750 1000 days IIBT4
II BT6 D or
II CT4 D
II CT6 D
WZP2-24SA
WZP-44SA
6.4
WZP2-44SA
WZP
-64S
WZP2
1Cr18Ni9Ti 30 cone protection tube M33*2 250350450100200300
Vibration types and specifications of explosive armoured thermal resistance
Category model
Degree
No temperature
Range temperature protection tube
Diameter D
(mm) thermal response time T0.5S nominal pressure Mpa structure
Characteristic specification
Grade
Total length L
(mm) inserted deep L
(mm)
Platinum thermal resistance WZPK-24
WZPK2-24
-200- PT100
500 - 6
Or
5.
Less than or equal to 12
Less than or equal to 810
Mounting M27*2 for the wire mounting box
300
350
450
550
650
900
1150
150
200
300
400
500
750
1000
IIBT4 D
IIBT6 D
Or
IICT4 D
IICT6 D
WZPK-44
WZPK2-44
6.4
Mounting flange mounting flange
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