Description
Overviews
Movable flange thermal resistance wzp-320 assembled thermal resistance is usually used with display instrument, recording instrument and electronic computer. It can directly measure the surface temperature of liquid, vapor, gas medium and solid in the range of - 200 ~ 500 ℃. In addition, it has the advantages of simple assembly, convenient replacement, pressure spring type temperature sensing element, good anti vibration performance, large measurement range, high mechanical strength and good pressure resistance.The assembled thermal resistance is mainly composed of junction box, protective tube, terminal block, insulating sleeve and temperature sensing element, and is equipped with various installation and fixing devices.
Specification
working principle
The thermal resistance measures the temperature by using the characteristic that the resistance of the substance changes with the change of temperature. The heated part of a thermal resistance.(Temperature sensing element)When there is a temperature gradient in the measured medium, the measured temperature is the average temperature in the dielectric layer in the range of the temperature sensor.
The assembled thermal resistance is mainly composed of junction box, protective pipe, terminal, insulation casing and temperature sensing element, and is composed of various installation and fixing devices.
Technical index
Temperature range and accuracy
|
Thermoelectric resistance category |
Measuring range ℃ |
Dividing number
|
Allowable deviation t ℃ |
|
WZP platinum resistance
|
-200～420 |
Pt100 |
Class B tolerance ±(0.3 or + 0.005 / t /) |
|
Class A tolerance ±(0.002 or + 0.002 / t /) |
|||
|
WZC copper resistance |
-150～100 |
Cu50 |
-50 ≤ 100 ℃ tolerance ±(0.30 × 6.0 × 10 ~ (- 3) t) |
Movable flangeThermal resistance
|
Thermoelectric resistance category
|
Product model
|
Dividing number
|
Measuring range ℃
|
Protective pipe material
|
Diameter dmm
|
Thermal response time
T0.5S
|
|
Single platinum thermal resistance
|
WZP-320
|
Pt100
|
200 / 420
|
Stainless steel
1Cr18Ni9Ti
Stainless steel
0Cr18Ni12M02Ti
|
16
|
≤ 90
|
|
WZP-321
|
12
|
≤ 30
|
||||
|
WZP-330
|
16
|
≤ 90
|
||||
|
WZP-331
|
12
|
≤ 30
|
||||
|
Double platinum thermal resistance
|
WZP2-320
|
16
|
≤ 90
|
|||
|
WZP2-321
|
12
|
≤ 45
|
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|
WZP2-330
|
16
|
≤ 90
|
||||
|
WZP2-331
|
12
|
≤ 45
|
||||
|
Copper thermal resistance
|
WZC-320
|
Cu50
|
-50 / 100
|
Brass H62
Stainless steel
1cr18Ni9Ti
|
12
|
≤ 120
|
|
WZC-330
|
Note: model320 and 321 are splash-proof junction boxes, and models 330 and 231 are waterproof junction boxes.
Specification for diameter and length of thermal resistance
|
Chief length LMM
|
Chief length LMM
|
|
16 |
12 |
|
300
350
400
450
550
650
900
1150
1400
1650
2150
|
225
250
300
350
450
550
650
900
1150
|
