oduct Name: WZP-430, 431 Fixed Flange Thermal Resistance
Product No.: 143846-103
Product Model: WZP-430, 431
Updated: 2009.07.01
Production unit: Thermocoule Thermoresistor, bimetallic thermometer, polytetrafluoroethylene, tetrafluorinated gasket-Shanghai Feilong Instrument Device Co., Ltd..
Custom: can be customized according to customer needs
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Product Details
WZP-430, 431 Fixed flange Thermal Resistance
Thermal resistance is measured by applying the principle that the resistance of the metal itself changes when the temperature changes. According to its protective tube structure, it is divided into assembly type(detachable) and armor type(non-detachable, packed platinum resistance). At present, there are two major types of installed thermal resistors used in the field: platinum thermal resistors with a fraction number of Pt100 and copper thermal resistors with a fraction number of Cu50.

Industrial WZ series assembly thermal resistors can be used directly with secondary instruments. The temperature of liquid, steam and gas media and solid surfaces in various production processes can be measured from -200 °C to 420 °C.
Due to its good electrical output characteristics, it can provide accurate temperature change signals for display instruments, recorders, regulators, scanners, data recorders, and computers.

Structure of the Assembly Thermal Resistance
Assembly heat resistance mainly consists of junction box, protective tube, connection terminal, insulation sleeve and temperature sensing element.
Model: WZP-640 Partition Pt100 Single Fixed Thread Cone-shaped Protection Pipe Blast Blast Terminal Length 300mm Cone-shaped Pipe Length 150mm A Grade 4 Line Temperature Measurement Range 0-400 °C
Model: WZP2-430 minutes Pt100 double fixed flange fixed fixed type waterproof junction box protection tube diameter <S> 16 mm stainless steel 1Cr18Ni9TiB accuracy L = 1000mm
Model No. WZP-230 minutes Cu 50(copper thermal resistance) Single fixed thread fixed mode waterproof junction box protection tube diameter <S> 16mm total length 1000mm
Model: WZP-121 minutes Pt100 single type non-fixed device splash type junction box protection tube diameter <S> 12 mm

Nominal pressure
Generally refers to the static external pressure that the protective tube can withstand without breaking at the working temperature. In fact, the allowable working pressure is not only related to the protective tube material, diameter, wall thickness, but also to its structure, installation method, depth of placement, and the velocity and type of medium to be measured.
Assembly pressure of combined thermoelectric resistor in different fixed devices

● The minimum insertion depth of the thermal resistance is calculated from the bottom of the protective tube, and the thermal resistance is at the length of the space to be measured.

lmin = ln+15D

Lmin-- minimum available insertion depth (mm)

Ln-- length of temperature sensing element (mm)

D-outer diameter of protective tube (mm)



□ Model and specification of conventional thermal resistance

● No fixed device type thermal resistance

Design length and depth of thermal resistance protection tube without fixing device (mm)

Fixed thread type thermal resistance

Comprehensive characteristics of fixed screw type thermistor

Design Length and Depth of Fixed Thread Thermal Resistance Protection Pipe(mm)

Movable flange type thermistor


Comprehensive Characteristics of Movable Flange Thermal Resistance

Specification Sheet for Different Diameter and Design Length of Movable Flange Thermal Resistance（mm）

Fixed flange type thermistor


Specification of fixed flange（mm）

Comprehensive performance of fixed flange type thermistor

Specification for Diameter, Length and Depth of Fixed Flange Thermal Resistance（mm）