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Stainless steel bimetal thermometer

Bimetal thermometer is a single needle thermometer that uses a spiral tube shaped bimetal sheet whic…
Description

Working principle of stainless steel bimetal thermometer

Bimetal thermometer is a single needle thermometer that uses a spiral tube shaped bimetal sheet which is fixed at one end and connected with a pointer needle at the other end. It rotates with the change of temperature and drives the pointer to rotate to indicate the temperature.

Stainless steel bimetal thermometer main technical characteristics

Temperature range: -80-600℃

Accuracy grade: 1.0/1.5,

Thermometer indication part :(according to the outer diameter of the thermometer dial) φ60, φ100, φ150mm.

Liner length: 100-2000mm.

Diameter of liner: φ6, φ10, (liner length 100-1250mm) φ12 (liner length 1250-2000mm)

Mounting part thread :M16X1.5; M27X2; G1/2; G3/4. The first class material of the liner and fixing bolt joint is 1Cr18Ni9Ti stainless steel, with pressure resistance of 6.4mpa.

 

Temperature measurement range

Measuring range ℃Scope of application
Industry, commerceLaboratory, small scale
- 80 ~ + 40Square rootSquare root
- 40 ~ + 80Square rootSquare root
0 ~ 50Square rootSquare root
0 ~ 100Square rootSquare root
0 ~ 200Square rootSquare root
0 ~ 300Square rootSquare root
0 ~ 400Square rootSquare root
0 ~ 500Square rootSquare root
0 ~ 600Square rootSquare root

Overall dimensions

In the form ofABCELd
The axial type652373-75
100
150
200
300
400
500
750
1000
Φ 6
Φ 8
Φ 10
1052373-
1552373-
The radial type655011034
1055011034
1055011034
135 ° to type1052385-
1552385-
Universal type10523178120
15523178120

Selection of coding

Series no. WSS
Bimetal thermometer
Nominal dial diameter- 3
Φ 60
4 -
Φ 100
- 5
Φ 150
Dial form 0
Axial (straight)
 1
Radial (angular)
 2
135° direction (obtuse Angle)
 8
Universal (adjustable Angle type)
Mounting fixed form 0
No fixing device
 1
Movable external thread
 2
Movable internal thread
 3
Fixed screw thread
 4
Fixed flange
 5
Card sets of thread
 6
Card flange
Protect the form-
ordinary
 W
protected
 F
Anti-corrosion type

Model and specification Bimetal thermometers, axial type

modelTemperature measurement rangePrecision gradeProtective tube materialspecificationsMounting fixed form
DL
WSS-300
- 40 ~ + 80
- 80 ~ + 40
0 ~ 50
0 ~ 100
0 ~ 150
0 ~ 200
0 ~ 300
0 ~ 400
0 ~ 500
0 ~ 600
1.51Cr18Ni9Ti
304
316
316L
Hartz C - 276
Φ 6075
100
150
200
300
400
500
750
1000
No fixing device
WSS-400Φ 100
WSS-500Φ 150
WSS-301Φ 60Movable external thread
WSS-401Φ 100
WSS-501Φ 150
WSS-302Φ 60Movable internal thread
WSS-402Φ 100
WSS-502Φ 150
WSS-303Φ 60Fixed screw thread
WSS-403Φ 100
WSS-503Φ 150
WSS-304Φ 60Fixed flange
WSS-404Φ 100
WSS-504Φ 150
WSS-305Φ 60Card sets of thread
WSS-405Φ 100
WSS-505Φ 150
WSS-306Φ 60
WSS-406Φ 100Card flange
WSS-506Φ 150

Radial bimetal thermometer

modelTemperature measurement rangePrecision gradeProtective tube materialspecificationsMounting fixed form
DL
WSS-310
- 40 ~ + 80
0 ~ 50
0 ~ 100
0 ~ 150
0 ~ 200
0 ~ 300
0 ~ 400
0 ~ 500
0 ~ 600
1.51Cr18Ni9Ti
304
316
316L
Hartz C - 276
Φ 6075
100
150
200
300
400
500
750
1000
No fixing device
WSS-410Φ 100
WSS-510Φ 150
WSS-311Φ 60Movable external thread
WSS-411Φ 100
WSS-511Φ 150
WSS-312Φ 60Movable internal thread
WSS-412Φ 100
WSS-512Φ 150
WSS-313Φ 60Fixed screw thread
WSS-413Φ 100
WSS-513Φ 150
WSS-314Φ 60Fixed flange
WSS-414Φ 100
WSS-514Φ 150
WSS-315Φ 60Card sets of thread
WSS-415Φ 100
WSS-515Φ 150
WSS-316Φ 60
WSS-416Φ 100Card flange
WSS-516Φ 150

Universal bimetal thermometer

modelTemperature measurement rangePrecision gradeProtective tube materialspecificationsMounting fixed form
DL
WSS-480
- 40 ~ + 80
- 80 ~ + 40
0 ~ 50
0 ~ 100
0 ~ 150
0 ~ 200
0 ~ 300
0 ~ 400
0 ~ 500
0 ~ 600
1.51Cr18Ni9Ti
304
316
316L
Hartz C - 276
Φ 10075
100
150
200
300
400
500
750
1000
No fixing device
WSS-580Φ 150
WSS-481Φ 100Movable external thread
WSS-581Φ 150
WSS-482Φ 100Movable internal thread
WSS-582Φ 150
WSS-483Φ 100Fixed screw thread
WSS-583Φ 150
WSS-484Φ 100Fixed flange
WSS-584Φ 150
WSS-485Φ 100Card sets of thread
WSS-585Φ 150
WSS-486Φ 100Card flange
WSS-586Φ 150

Bimetal thermometer 135° direction

modelTemperature measurement rangePrecision gradeProtective tube materialspecificationsMounting fixed form
DL
WSS-4200 ~ 50
0 ~ 100
0 ~ 150
0 ~ 200
0 ~ 300
0 ~ 400
0 ~ 500
0 ~ 600
1.51Cr18Ni9Ti
304
316
316L
Hartz C - 276
Φ 10075
100
150
200
300
400
500
750
1000
No fixing device
WSS-520Φ 150
WSS-421Φ 100Movable external thread
WSS-521Φ 150
WSS-422Φ 100Movable internal thread
WSS-522Φ 150
WSS-423Φ 100Fixed screw thread
WSS-523Φ 150
WSS-424Φ 100Fixed flange
WSS-524Φ 150
WSS-425Φ 100Card sets of thread
WSS-525Φ 150
WSS-426Φ 100Card flange
WSS-526Φ 150
 

 Installation requirements

For the installation of bimetal thermometer, attention should be paid to the accuracy of temperature measurement, safety and easy maintenance, and does not affect the operation and production operation of equipment, to meet the above requirements, in the selection of the installation site and insertion depth of the thermal resistance should pay attention to the following points:

(1) In order to ensure sufficient heat exchange between the measuring end of the thermal resistance and the measured medium, the location of the measuring point should be reasonably selected, and the thermal resistance should be avoided near the dead Angle of the valve, elbow, pipe and equipment.

(2) Thermal resistance with protective sleeve has heat transfer and heat dissipation loss. In order to reduce measurement error, thermocouple and thermal resistance should have sufficient insertion depth:

A. For the thermal resistance measuring the temperature of the fluid in the center of the pipe, the measuring end should generally be inserted into the center of the pipe (vertical installation or inclined installation). If the pipe diameter of the flow body being measured is 200mm, the insertion depth of the thermal resistance should be selected as 100mm;

B. For the temperature measurement of high temperature, high pressure and high-speed fluid (such as the temperature of main steam), in order to reduce the resistance of the protective sleeve to the fluid and prevent the fracture of the protective sleeve under the action of the fluid, shallow insertion of the protective tube or the thermal resistance of the hot sleeve can be adopted. The depth of the thermal resistance protection sleeve inserted into the main steam pipe should not be less than 75mm; The standard insertion depth of hot sleeve thermal resistance is 100mm;

C. If it is necessary to measure the temperature of flue gas in the flue, even though the flue diameter is 4m and the insertion depth of thermal resistance is 1 m;

D. When the measuring element is inserted into a depth of more than 1m, it should be installed vertically as far as possible, or support frame and protection casing should be added.



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