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Bimetallic Thermometer

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Bimetallic Thermometer

Overview

Bimetallic thermometer

Applications

Tel: 0512-57892201  Mobile: 13451695112

Key Features

  • Movable male thread
  • Movable male / female thread
  • Fixed thread
  • Compression thread
  • Compression thread
  • Fixed flange
  • Axial type
  • Radial type
  • 135° type
  • Universal type

Technical Specifications

WSS–481W
Code Segment Meaning & Options Value in This Example
W Temperature instrument W
S Metal Expansion Type S
S Bimetal Sensing Element S
4 Case Nominal Dia. (3:φ60 4:φ100 5:φ150) 4
8 Position Type (0:Axial (straight) 1:Radial (angular) 2:135° (drilled angle) 8:Universal (adjustable angle)) 8
1 Mounting Fitting (0:Without fixing device 1:Movable male thread 2:Movable female thread 3:Fixed thread 4:Fixed flange 5:Compression thread 6:Compression flange) 1
W Protection Type (Unmarked: general purpose W: protected type F: corrosion-resistant type) W

The bimetallic thermometer is a local indicating instrument for medium and low temperatures. It directly measures the temperature of liquids, steam and gaseous media from 80 °C to +500 °C in various production processes.

Features

○ On-site temperature display, intuitive and convenient,

○ Safe and reliable with a long service life,

○ Various structural types to meet different requirements.

Operating Principle

The bimetallic thermometer is based on a bimetal strip wound into a curved ring. When one end is heated and expands, it drives the pointer to rotate, and the indicating instrument shows the corresponding temperature value.

Main Technical Specifications

○ Applicable standards

JB/T 8803-1998

○ Dial nominal diameter: 60, 100, 150

○ Accuracy Class:(1.0),1.5

○ Thermal Response Time:≤40S

○ Ingress protection:IP55

Angle adjustment error

The angle adjustment error shall not exceed 1.0% of the span.

Hysteresis error

The hysteresis error of the thermometer shall not exceed the absolute value of the basic error limit.

Repeatability

The repeatability limit range of the thermometer shall not exceed 1/2 of the absolute value of the basic error limit.

Measuring Range

Measuring Range °C Scope of application
Industrial, commercial Laboratory, small-scale
-80~40 √ √
-40~80
0~50
0~100
0~150
0~200
0~300
0~400
0~500

Normal atmospheric conditions

Working area Temperature °C Relative humidity %
Sheltered location -25~+55 5~100
Outdoor location -40~+85

Measuring junction type

Axial type Radial type

Removable core type

Type A B C E L d
Axial type 65 23 73 – 75
100
150
200
300
400
500
750
1000

Ø6
Ø8
Ø10

105
155
Radial type 65 50 110 34
105
Universal type 23 178 120
155
135° type 105 85 –
155

Dimensions

Universal type

Mounting Type

M H S d
M16×1.5 12 18 Ø6
Ø8
Ø10
M20×1.5 16 22
M27×2 20 30
NPT1/4 15 18
NPT1/2 19 22
NPT3/4 25 30
M H S d
M16×1.5 12 18 Ø6
Ø8
Ø10
M20×1.5 16 22
M27×2 20 30
NPT1/4 15 18
NPT1/2 19 22
NPT3/4 25 30
M H S d
M16×1.5 12 18 Ø6
Ø8
Ø10
M20×1.5 16 22
M27×2 20 30
NPT1/4 15 18
NPT1/2 19 22
NPT3/4 25 30
M H S d
M12×1.5 15 19 Ø6
M16×1.5 22 Ø8
M20×1.5 16 24 Ø10
D D。 D₁ S d₀ d
Ø60 Ø42 Ø24 22 Ø9 Ø8
Ø10
D D₁ D₂ H d。 d
Ø105 Ø75 Ø55 16 Ø14 Ø8
Ø10

Note: ANSI, JB, HG and other standard flanges are available

Fixed thread

Movable female thread

Movable male thread

Compression thread

Compression flange

Fixed flange

Model Numbering System

Model & Specification

Model Measuring Range °C Accuracy Class Protection Tube Material Specification Mounting Fitting
d L
WSS-310 -80~40
-40~80
0~50
0~100
0~150
0~200
0~300
0~400
0~500
1.5 1Cr18Ni9Ti

304

316

316L

Hastelloy C-276

Ø60 75
100
150
200
300
400
400
500
750
1000
Without fixing device
WSS-410 Ø100
WSS-510 Ø150
WSS-311 Ø60 Movable male thread
WSS-411 Ø100
WSS-511 Ø150
WSS-312 Ø60 Movable female thread
WSS-412 Ø100
WSS-512 Ø150
WSS-313 Ø60 Fixed thread
WSS-413 Ø100
WSS-513 Ø150
WSS-314 Ø60 Fixed flange
WSS-414 Ø100
WSS-514 Ø150
WSS-315 Ø60 Compression thread
WSS-415 Ø100
WSS-515 Ø150
WSS-316 Ø60 Compression flange
WSS-416 Ø100
WSS-516 Ø150
Model Measuring Range °C Accuracy Class Protection Tube Material Specification Mounting Fitting
d L
NSS-420 -80~40
-40~80
0~50
0~100
0~150
0~200
0~300
0~400
0~500
1.5 1Cr18Ni9Ti
304
316
316L
Hastelloy C-276
Ø100 75
100
150
200
300
400
400
500
750
1000
Without fixing device
WSS-520 Ø150
NSS-421 Ø100 Movable male thread
NSS-521 Ø150
WSS-422 Ø100 Movable female thread
WSS-522 Ø150
NSS-423 Ø100 Fixed thread
WSS-523 Ø150
WSS-424 Ø100 Fixed flange
WSS-524 Ø150
WSS-425 Ø100 Compression thread
WSS-525 Ø150
NSS-426 Ø100 Compression flange
WSS-526 Ø150
Model Measuring Range °C Accuracy Class Protection Tube Material Specification Mounting Fitting
d L
WSS-480 -80~40
-40~80
0~50
0~100
0~150
0~200
0~300
0~400
0~500
1.5 1Cr18Ni9Ti

304
316

316L

Hastelloy C-276

Ø100 75
100
150
200
300
400
400
500
750
1000
Without fixing device
SS-580 Ø150
WSS-481 Ø100 Movable male thread
SS-581 Ø150
SS-482 Ø100 Movable female thread
SS-582 Ø150
SS-483 Ø100 Fixed thread
WSS-583 Ø150
SS-583 Ø100 Fixed flange
NSS-584 Ø150
SS-485 Ø100 Compression thread
SS-585 Ø150
WSS-486 Ø100 Compression flange
WSS-586 Ø150

Selection Guide

1)Model

2) Dial diameter

3)Accuracy Class

4) Mounting type

5) Measuring range

6) Length or insertion depth

Example A: Universal type, dial diameter Ø100, measuring range 0–400 °C, class 1.5, movable male thread M27×2, length 450 mm, WSS-481, 0–400 °C, L=450, M27×2, class 1.5

Installation method diagram

Vertical pipe installation

Vertical pipe installation

Curved pipe installation

Flange installation method

Direct connection head specification

Code M D D₁ D₂ d h H
21A M12×1.5 Ø24 Ø16 Ø12 Ø8 20 60
21B M16×1.5
21C M20×1.5 Ø28
21D M27×2 Ø39 Ø28 Ø24 Ø20 35
21E M33×2 Ø48 Ø38 Ø30 Ø22 90
21F NPT1/2 Ø28 Ø16 Ø12 Ø8 20 60
21G NPT3/4 Ø39 Ø28 Ø24 Ø20 35
21H NPT1 Ø48 Ø38 Ø30 Ø22 90
Code M D D₁ d h H
22A M12×1.5 Ø24 Ø16 Ø8 20 35
22B M16×1.5
22C M20×1.5 Ø28 45
22D M27×2 Ø39 Ø28 Ø20 35 60
22E M33×2 Ø48 Ø38 Ø22 90
22F NPT1/2 Ø28 Ø16 Ø8 20 45
22G NPT3/4 Ø39 Ø28 Ø20 35 60
22H NPT1 Ø48 Ø38 Ø22 90
Code M D D1 D h H
23B M16×1.5 Ø24 Ø16 Ø8 20 45
23C M20×1.5 Ø28
23D M27×2 Ø39 Ø28 Ø20 35 80
23E M33×2 Ø48 Ø38 Ø22
23F NPT1/2 Ø28 Ø16 Ø8 20 45
23G NPT3/4 Ø39 Ø28 Ø20 35 80
23H NPT1 Ø48 Ø38 Ø22

Ordering & Inquiry

For selection guidance, specification confirmation or quotation, please call 0512-57892201, Mobile 13451695112, or submit an online order. Suzhou Dingluxuan Sensor Technology Co., Ltd. provides a complete matching service from temperature sensing elements to complementary ceramic insulation parts.

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0512-57892201
Mobile: 13451695112
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