1~Good shockproof,wide measuring range
2~Imported diaphragm electronic component stable performance
3~High accurancy
4~IEC751
Port: Shanghai
Minimum Order Quantity: 5 Piece/Pieces
Supply Ability: 100000 Piece/Pieces per Month
Payment Terms: L/C,T/T,Western Union,MoneyGram
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Packaging Detail: shock-proof inner package, carton outer package
Delivery Detail: 10 days
1. Operating Principle
Explosion-proof thermal resistance is the use of interstitial explosion principle, Design of adequate strength of such
parts as the junction box,Will all can produce sparks,arc and dangerous temperature parts will seal in the junction
box cavity,when the blast occurred in cavity, Can through the jointing surface gap left and cooling,After the explosion of
flame and temperature transfer less than a cavity, which carried out the explosion-proof.
The explosion-proof thermal resistance at ambient temperature of 15-35 ° C, relative humidity of not more than 80%, the test
voltage 10-100V (DC) between the electrode and the jacket pipe insulation resistance> 100MΩ.
2. Measuring Range & Tolerance
| Model | Graduation Mark | Temperature Measuring Range | Accuracy Grade | Tolerance |
| WZP | Pt100 | -200-+500 | A | ±(0.15+0.002) ltl |
| B | ±(0.30+0.005) ltl | |||
| WZC | Cu50 Cu100 | -50-+100 | --- | ±(0.30+0.005) ltl |
3. Explosion-proof grouping method
| Model | code | explaination |
| Type | d | Explosion-proof |
| ia | intrinsically safe | |
| electric equipments | I | Coal mine underground for electric equipment |
| II | Factory electric equipments | |
| Explosion-proof grade II | range | Allowable |
| A | 0.9≤MESG | |
| B | 0.5<MESG<0.9 | |
| C | MESG≤0.5 | |
| Temperature group | Highest surface temperature °C | |
| T1 | 450 | |
| T 2 | 300 | |
| T3 | 200 | |
| T4 | 135 | |
| T5 | 100 | |
| T6 | 85 |
4. Model selection schedule
| Model | code | Explaination |
| WZ | Explosion-proof RTD | |
| 1~temperaturesensing element | P | platinum resistor |
| C | Copper resistor | |
| 2~Resistor No# | - | simplex |
| 2 | duplex | |
| 3~Mounting type | 1 | No fixing means |
| 2 | Fixed thread | |
| 4 | Fixed flange | |
| 5 | Flexible tube connector | |
| 6 | Fixed threaded conical tube | |
| 7 | Straight pipe connector type | |
| 8 | Fixed threaded pipe connector type | |
| 9 | Movable threaded pipe connector type | |
| 4~Connection-box | 4 | Explosion-proof |
| 5~Thermowell diameter | 0 | 16 mm |
| 1 | 12 mm | |
| 6~The form of the working end | K | Sheathed inner core |
| B | Adjustable type inner core | |
| 7~explosion-proof class | BT4 | dII BT4 |
| CT4 | dII CT4 |
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