Product Overview
The WSS-481 Series Industrial Bimetal Thermometer is designed for direct local temperature measurement in industrial processes. It features a 100 mm analog dial, an adjustable-angle head and a 316 stainless steel thermowell.
The mechanical bimetal sensing element converts temperature changes into pointer movement, providing clear on-site temperature readings without an external power supply.
The instrument is supplied with a 1-1/2" (DN40) Class 150 RF flange and a custom 316SS thermowell. The adjustable-angle design allows the dial to be positioned for convenient viewing after installation.
This thermometer is suitable for industrial pipelines, tanks, vessels and process equipment requiring reliable local temperature indication.
Applications
Industrial process pipelines
Chemical and petrochemical equipment
Oil and water process systems
Storage tanks and process vessels
Water treatment systems
Heating and cooling equipment
Power generation and utility systems
General industrial temperature monitoring
Suitable for measuring the temperature of water, oil, liquids, gases and steam within the specified operating range and compatible process conditions.
Key Features
Adjustable-Angle Design
Allows the dial to be positioned for convenient reading after installation.
316 Stainless Steel Thermowell
Provides mechanical protection for the sensing element and separates the thermometer probe from the process medium.
100 mm Analog Dial
Provides clear local temperature indication.
Mechanical Operation
Requires no external power supply, battery or electrical wiring.
Flanged Process Connection
Features a 1-1/2" (DN40) Class 150 RF flange for process installation.
Industrial Bimetal Sensing Element
Converts temperature changes into mechanical pointer movement.
Optional IP65 Protection
IP55 is standard on the listed configuration; IP65 is available as an option.
Technical Specifications
Item | Specification |
Model | WSS-481 Series |
Display | Mechanical analog pointer |
Measuring Range | 0–60°C |
Accuracy Class | Class 1.5 |
Scale Division | 1°C |
Dial Size | Φ100 mm |
Mounting Type | Universal adjustable-angle |
Thermometer Connection | Movable male thread |
Thread Options | M27×2 / G3/4" |
Sensing Element Diameter | Φ10 mm |
Thermowell Material | Stainless Steel 316 |
Thermowell Outside Diameter | Φ20 mm |
Flange Standard | ASME B16.5 |
Flange Size | 1-1/2" (DN40) |
Pressure Class | Class 150 |
Flange Facing | RF (Raised Face) |
Insertion Length U | 200 mm |
Thermowell Length L | 280 mm |
Thermal Response Time | ≤40 s |
Angle Adjustment Error | ≤1.0% of measuring range |
Protection Grade | IP55; IP65 optional |
Power Supply | Not required |
Output | Local mechanical indication |
Note: Specifications can be customized according to customer requirements.
Configuration Options
The following items can be specified for project requirements:
Temperature measuring range
Dial size and scale division
Thermowell material and dimensions
Flange size, standard and pressure class
Thermometer connection thread
Insertion length
Enclosure protection grade
Please provide the required process connection, temperature range and installation dimensions when requesting a quotation.
Selection Guide
To select the correct bimetal thermometer, please provide:
Measuring Range: For example, 0–60°C.
Dial Size: 100 mm or another required size.
Process Connection: Flange size, standard, pressure class and facing.
Thermowell Material: For example, SS316.
Insertion Length: Required immersion length in the process.
Process Medium: Water, oil, gas, steam or another medium.
Protection Grade: IP55 or optional IP65.
The thermometer and thermowell should be selected according to the process temperature, pressure, medium compatibility and installation requirements.
FAQ
No. It works mechanically and does not require an external power supply.
Q2: Can I adjust the dial angle?
Yes. The adjustable-angle design allows convenient dial positioning after installation.
Q3: What is the dial size?
The standard dial size for this model is 100 mm.
Q4: What material is the thermowell?
The listed configuration uses 316 stainless steel.
Q5: What is the process connection?
The listed configuration uses a 1-1/2" (DN40) Class 150 RF flange.
Q6: Can the specifications be customized?
Yes. Measuring range, thermowell dimensions and process connection can be specified according to project requirements.
Q7: Does this model provide a 4–20 mA output?
No. This model provides local mechanical temperature indication. A remote-output temperature instrument is available as a separate product type.
Request a Quotation
To receive an accurate quotation, please provide:
Required temperature range
Dial size
Flange standard, size and pressure class
Thermowell material and dimensions
Insertion length
Process medium
Required quantity
JIECHUANG provides industrial temperature measurement instruments for process monitoring and automation applications. Contact us with your technical requirements for product selection and quotation.
