FDWZ Explosion Proof Thermal Resistanc

Technical Parameter Table

Product Implementation Standard

Temperature Range and Tolerance  

A grade

B grade

Description: ｜t｜is temperature absolute value measured by temperature-sensing element

Thermal Response Time

Normal Temperature Insulation Resistance

    Note: the test condition is: ambient temperature 15-30°C, environmental humidity is not more than 80%, the experimental voltage is any value between DC 10-100V, measuring insulation resistance between the electrode and the outer jacked.

Upper Temperature Insulation Resistance

Temperature Value

Minimum Allowable Values

The upper limit temperature insulation resistance of Cu resistance shall be not less than 10MΩ.

Minimum Insertion Depth

   The depth of the heat resistance protection tube insertion media is generally not less than the sum of resistive element length (about 50mm) and the outer diameter size of 8 to 10 times (except for the special products)

Length Specification

Insert length 150-2000mm

Exposure length with fixed device type standard  150mm

Diameter and Material

Standard φ12mm, φ16mm

Protection Tube Material：1Cr18Ni9Ti,Porcelain beads

Terminal Box Material：Casting aluminum low copper

Connection Form

Splash proof, Water proof

Installation Method

Non fixing device, Fixed screw thread type, Fixed flange type, Movable flange type, Fixed screw thread taper

Allowable Current

A grade

 B grade

Natural Effect

The maximum measured current is 5mA allowed by thermal resistance.

The resulting temperature rise is not greater than 0.3 degrees, recommended measuring current 1mA

Explosion-proof Grade

Intrinsic safe type

Explosion-proof type