Bimetal Thermometer
Product Overview
Section titled “Product Overview”The bimetal thermometer is an on-site detection instrument for low- and medium-temperature measurement. It directly measures temperatures of liquid, steam and gas media in production processes, with a measurement range of -80 to +500°C. Its sensing element is a bimetal strip wound into a circular curve. When heated, it expands and drives the pointer to rotate and indicate the corresponding temperature.
Applications
Section titled “Applications”- Temperature measurement of liquid, steam and gas media in production processes.
- Low- and medium-temperature applications requiring local temperature indication.
- Applications requiring temperature control, alarm or remote transmission, with the corresponding construction selected.
Product Advantages
Section titled “Product Advantages”- Local temperature indication for direct reading.
- Electrical contact construction available for automatic control and alarm.
- Thermocouple (resistance) integrated construction available to meet field measurement and long-distance transmission requirements.
- Multiple construction forms to suit different mounting requirements.
- safe and reliable operation and long service life.
Installation Methods
Section titled “Installation Methods”- Location characteristics available as axial, radial, 135° orientation and universal.
- Fixed installation available as no fixed installation, movable external thread, movable internal thread, fixed thread, fixed flange, ferrule thread and ferrule flange.
- Measuring-end form available as integrated or core pulling type.
Key Parameters
Section titled “Key Parameters”General Parameters
Section titled “General Parameters”| Item | Parameter |
|---|---|
| Applicable standard | JB/T8803 |
| Nominal dial diameter | 60, 100, 150 mm |
| Bimetal thermometer accuracy class | Class 1.0, Class 1.5 |
| Armored thermal resistance (Pt100) accuracy | Class A: ±(0.15±0.002｜t｜); Class B: ±(0.30±0.005｜t｜) |
| Protection level | IP55, IP65, IP66 |
| Angle adjustment error | Not more than 1.0% of the range |
| Return error | Not greater than the absolute value of the basic error limit |
| Repeatability | Not greater than 1/2 of the absolute value of the basic error limit |
Temperature Measurement Ranges and Accuracy
Section titled “Temperature Measurement Ranges and Accuracy”| Available temperature measurement ranges | Accuracy |
|---|---|
| -80 to 40°C, -50 to 300°C, -50 to 200°C, -50 to 150°C, -50 to 100°C, -50 to 50°C, -40 to 80°C, -40 to 60°C, -30 to 150°C, -20 to 200°C, -20 to 150°C, -20 to 100°C, -20 to 80°C, -20 to 60°C, 0 to 50°C, 0 to 60°C, 0 to 80°C, 0 to 100°C, 0 to 120°C, 0 to 150°C, 0 to 200°C, 0 to 250°C, 0 to 300°C, 0 to 350°C, 0 to 400°C, 0 to 500°C, 0 to 600°C | Class 1.0, 1.5, 2.0 |
Thermal Response Time
Section titled “Thermal Response Time”| Protective tube specification | Φ6×0.5 mm | Φ8×1 mm | Φ10×1 mm | Φ12×1.5 mm | Φ14×1.5 mm |
|---|---|---|---|---|---|
| Thermal response time | ≤40 s | ≤40 s | ≤40 s | ≤60 s | ≤90 s |
Electrical Parameters for Electrical Contact Type
Section titled “Electrical Parameters for Electrical Contact Type”| Item | Parameter |
|---|---|
| Rated power | 10 VA |
| Working voltage | 220/380 V.A.C. |
| Maximum allowable current | 0.7 A |
Standard Dimensions
Section titled “Standard Dimensions”| Form | Dial diameter A | C | Preferred thread and E | Available L | d |
|---|---|---|---|---|---|
| Axial type | Φ65, Φ105, Φ155 mm | 73 mm | M20×1.5, E=15; M27×2, E=20 | 75, 100, 150, 200, 300, 400, 500, 750, 1000 mm | Φ6, Φ8, Φ10 mm |
| Radial type | Φ65, Φ105, Φ155 mm | 110 mm | M20×1.5, E=15; M27×2, E=20 | 75, 100, 150, 200, 300, 400, 500, 750, 1000 mm | Φ6, Φ8, Φ10 mm |
| 135° orientation type | Φ105, Φ155 mm | 85 mm | M20×1.5, E=15; M27×2, E=20 | 75, 100, 150, 200, 300, 400, 500, 750, 1000 mm | Φ6, Φ8, Φ10 mm |
| Universal type | Φ105, Φ155 mm | 178 mm | M20×1.5, E=15; M27×2, E=20 | 75, 100, 150, 200, 300, 400, 500, 750, 1000 mm | Φ6, Φ8, Φ10 mm |
| Remote transmission type | Φ105 mm | 200 mm | M20×1.5, E=15; M27×2, E=20 | 75, 100, 150, 200, 300, 400, 500, 750, 1000 mm | Φ6, Φ8, Φ10 mm |
| Electrical contact type | Φ105 mm | 200 mm | M20×1.5, E=15; M27×2, E=20 | 75, 100, 150, 200, 300, 400, 500, 750, 1000 mm | Φ6, Φ8, Φ10 mm |
Main Models
Section titled “Main Models”- WSS-401
- WSS-411
- WSS-421
- WSS-481
- WSSP-481
- WSSX-481
Information Required for Inquiry
Section titled “Information Required for Inquiry”- Required temperature measurement range, accuracy class and dial diameter.
- Required location characteristic, measuring-end form and fixed installation method.
- Protective tube specification, insertion length L, thread or flange connection dimensions.
- Whether electrical-contact control/alarm, remote transmission or thermocouple (resistance) integrated construction is required.
- Measured medium, operating temperature, pressure and required site protection level.
Related Products
Section titled “Related Products”- Armored thermocouple (resistance): this element can be installed inside the bimetal thermometer protective tube for integrated measurement and long-distance transmission.