Industrial flame-proof platinum resistance is a kind of temperature sensor. A wide application in industrial control system, through the temperature sensor, can control the temperature of the object parameter into electrical signal, passed to the display, record and monitoring instrument, testing, adjusting and control law in the system. In chemical plant, the production site is often accompanied by various kinds of flammable, explosive chemical gas, steam, if use common platinum resistance is not safe, easy to environment caused by gas explosion. On these occasions, therefore, must use the flame-proof thermocouples as temperature sensor, the factory production of flame-proof platinum resistance product is used in d II BT4 ~ d category II CT6 temperature interval explosive gases in dangerous places. Our factory produce flame-proof thermocouple adopts imported components for thermal components, its technical performance in line with the ZBY301-85 industrial platinum electrical technical conditions and indexing table. At the same time products conform to the general requirements for explosive environment with explosion-proof electrical equipment, GB3836.2 GB3836.1-83-83 standard.

Mixer main technical indicators

Range specifications

model

Degree,

℃ temperature range

Precision grade

The allowable deviation delta t ℃

WZP

WZP 2

WZPK

WZPK 2

PT100-200 ~ 500 grade A + (0.15 + 0.002 | t |)

B + (0.30 + 0.005 | t |)

Note: the "t" for the thermal components measured temperature of absolute value, class B double platinum resistance to only supply

Thermal resistance allowed by current

Through platinum resistance measured current is not more than 5 ma.

Explosion-proof type and level group

Explosion-proof grade groups: d II BT4 or d CT4 II; D II II CT6 BT6 or d

Enclosure protection grade: IP54

The principle of structure

Flame-proof thermal resistance fabricated thermal resistance of the structure, principle and basic same, SuoOu is, explosion-proof products on the junction box (shell) in the design of the structure of the flameproof special, junction box with high strength aluminum alloy die casting, and have enough internal space, thickness and mechanical strength, thermal stability of the rubber sealing ring conform to the state explosion protection standard. So, when the junction box of internal explosive mixed gas explosion, it won't destroy junction box, and the resulting heat cannot spread outward - explosive.

Because the explosion-proof products adopt special structure, make the product completely conforms to use d II BT4 to d II CT6 explosion-proof group interval temperature range, as long as the user strictly abide by the regulations regarding the use of the product, the product can achieve reliable explosion-proof effect.

Electrical equipment's type, level and temperature category description:

Electrical equipment is divided into two categories: type I, the coal mine electrical equipment;

Class II - use electrical equipment factory

Explosion-proof grade

Flame-proof heat resistance level of explosion-proof mechanical its biggest security clearance is suitable for explosive gas mixture is divided into A, B, C level 3.

Temperature classes

Flame-proof tropical resistance according to the exposed part of the maximum surface temperature can be divided into temperature classes T1 ~ T6 six groups.

Types and specifications of the flame-proof resistance

Category type dividing ℃ temperature range protection tube

Materials thermal response t0.5 s time nominal pressure Mpa explosive-proof grade structure characteristic specifications

Total length L (mm) deep L (mm)

Platinum thermal resistance WZP - 24 sa PT100 1 cr18ni9ti stainless steel - 200 ~ 200

Or 0 cr18ni

12 m02ti 90 or less 10 explosion-proof junction box fixed screw M27 * 2 explosion-proof junction box fixed flange installation 250 350 400 450 350 650 900 1150 100 400 250 300 400 500 300 1000 d IIBT4

D II BT6 or

D II CT4

D II CT6

WZP2-24 sa

WZP - 44 sa

6.4

WZP2-44 sa

WZP - 64 - s

WZP2

1 cr18ni9ti 30 conical protection tube M33 * 2, 250, 350, 450, 100, 200, 300

Flame-proof armored thermal resistance and the kinds of specifications

Category model points

The degree of

Temperature of no.

℃ range of protecting tube

Diameter D

Time (mm) thermal response t0.5 s nominal pressure structure of Mpa

Features specifications for explosion-proof

level

The total length L

(mm) deep l

(mm)

Platinum thermal resistance WZPK - 24

WZPK2-24

PT100-200 -

Phi 500 6

or

Phi 5

12 or less

8 of 10 or less

Explosion-proof junction box fixed screw to install M27 * 2

300

350

450

550

650

900

1150

150

200

300

400

500

750

1000

D IIBT4

D IIBT6

or

D IICT4

D IICT6

WZPK - 44

6.4 WZPK2-44

Explosion-proof junction box fixed flange installation