?? The industrial used explosion-proof thermal resistance takes the
temperaturesurvey and the control sensor and the display instrument
necessary, by directmeasurement and in control production process
gas, liquid and steamtemperature.
???Our company produces the chemical special-purposeexplosion-proof
thermo-element, the explosion-proof thermal resistance
productexplosion-proof performance according to the national
promulgation theexplosive environment with the permissible
electrical equipment” the modulardesign manufacture, the
thermoelectricity characteristic conforms to theinternational IEC
standard, and is qualified after the country instruments andmeters
explosion-proof safety surveillance station test.
Theexplosion-proof thermo-element, the explosion-proof thermal
resistance'sstructure, the principle and the assembly way basic
same, the main difference isthe flame-proof product connecting box
(outer covering) uses the high strengthaluminum alloy compression
casting in the design to become, and has the enoughinner space,
wall thickness and the mechanical strength, the rubber seal
packingcollar's thermostability conforms to the national
explosion-proof standard. Whentherefore the connecting box internal
explosivity gaseous mixture has thedetonation, its intrinsic
pressure will not destroy the connecting box, butproduces from the
heat energy cannot the outward diffusion--Detonation. So longas the
user observes the product use rule strictly, the explosion-proof
thermalresistance product can achieve the reliable explosion-proof
effect. |
| Presses the reed type bulb, the vibration-proofperformance is good; | | The survey precision is high; | | Does not need the extension wire, saving of expense; | | The import film resistor part, the perform reliably isstable. |
| ? The explosion-proof thermal resistance is uses the gapflame-proof
principle, the design has enough intensity parts and so
onconnecting box, will possess will produce the spark, the electric
arc and thedangerous temperature spare part seals in the connecting
box cavity, when in thecavity has the detonation, can through the
adjoining plane gap flameout andcooling, after causing the
detonation the flame and the temperature does notpass on outside
the cavity, thus carries on flame-proof. |
| Major technique parameter | ? |
The product carries out thestandard
IEC751??? JB/T18622-1997????? JB/T8623-1997????? JB/T5518-91 |
| Normal temperature dielectric resistance | ? |
| ??? The explosion-proof thermal resistance in the
ambienttemperature for 15-35°C, the relative humidity isnot bigger than 80%, the testing voltage is 10-100V (cocurrent) between the electrode and thewrapper tube dielectric
resistance >100M. |
| Measuring range and allowable deviation | ? |
Model | Indexing number | Temperature measurement scope | Precision class | Allowance error | WZP | Pt100 | -200-+500 | A level | ± (0.15+0.002) ltl | B level | ± (0.30+0.005) |
|
