productoverview
Thermostats
1
Thermostats are essential for the reliable and safe operation of machines and systems.
They help prevent temperature-related issues, improve operational reliability, and reduce maintenance and downtime costs. With our range of flush-mounted, surface-mounted, and electrical thermostats, we offer cost-effective solutions for temperature control, monitoring, and protection in a wide variety of industrial applications.
Choose the right thermostat for reliable control, monitoring, and protection of your (production) process.
productoverview
builtin
<br/>
JUMO EM-1 thermostat
JUMO EM-1 thermostat
Built-in thermostats
A built-in thermostat measures the ambient temperature and activates an electrical contact as soon as a preset temperature limit is reached. This is used to control systems such as heating, ventilation, or alarms. Built-in thermostats are suitable for temperature monitoring and protection in control panels and industrial installations.
false
recommendationTable
602010
602021
602025
602026
602031
602051
602090
surfacemounted
<br/>
JUMO exTHERM S200
JUMO exTHERM S200
Surface-mounted thermostats
A surface-mounted thermostat measures and controls temperature based on preset limits and is mounted externally on a wall, cabinet, or machine. As soon as the temperature is reached or exceeded, the thermostat activates an electrical contact for heating, cooling, or signaling. Surface-mounted thermostats are used where easy installation and accessibility are required.
false
recommendationTable
601540
603021
603026
603031
603035
603051
603070
604100
604514
605055
605058
electric
<br/>
JUMO eTRON T100
JUMO eTRON T100
Electric thermostats
An electric thermostat controls heating or cooling based on preset temperature limits. When the limit value is reached, a mechanical or electronic sensor immediately activates a switch contact. This simple switching principle makes electric thermostats suitable for reliable industrial applications.
false
recommendationTable
604170
701052
701061
701066
701080
701090
temperaturemonitoring
<br/>
JUMO safetyM STB/STW
JUMO safetyM STB/STW
Temperature monitoring and protection
Temperature monitoring and protection systems are used to reliably control heating processes and safely shut down systems in the event of malfunctions. Temperature monitoring detects temperature deviations and triggers a signal or a switch. Temperature protection goes a step further and automatically switches the system to a safe operating state if the limit is exceeded. These solutions are used where protection of systems, processes, the environment, and people is required and where compliance with standards, such as DIN EN 14597, is necessary.
false
recommendationTable
701150
701155
701160
701170
faq
Frequently Asked Questions
Here you’ll find answers to the most frequently asked questions about thermostats:
What is a built-in thermostat?
When should you choose a built-in thermostat?
In what applications are built-in thermostats used?
What is a surface-mounted thermostat?
When should you choose a surface-mounted thermostat?
In what applications are surface-mounted thermostats used?
What is an electric thermostat?
What is a capillary thermostat?
What is a bimetal thermostat?
When should you choose an electric thermostat?
What is temperature monitoring and protection?
What is a safety temperature limiter (STB)?
Where are STB's primarily used?
Are there differences between an STB and a temperature limiter?
How do you choose the right temperature monitoring and protection?
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faq1
What is a built-in thermostat?
A built-in thermostat is a thermostat that is mounted inside or behind a housing, panel, or device and is typically not visible to the user. Built-in thermostats are often used as an integral part of an installation or device.
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faq2
When should you choose a built-in thermostat?
You should choose a built-in thermostat when:
- the thermostat is part of an OEM application
- protection against contact, dirt, or moisture is important
- the user is not allowed to adjust the temperature themselves
- a compact and neat finish is desired
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faq3
In what applications are built-in thermostats used?
Typical applications include, for example:
- boilers and water heaters
- ovens and electric heaters
- industrial systems and machinery
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faq4
What is a surface-mounted thermostat?
A surface-mounted thermostat is installed on the outside of a unit or wall and is clearly visible and accessible. The thermostat is housed in its own enclosure.
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faq5
When should you choose a surface-mounted thermostat?
Surface-mounted thermostats are suitable when:
- the user needs to adjust the temperature regularly
- quick and easy installation is desired
- the application involves maintenance, retrofitting, or testing
- accessibility is more important than aesthetics
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faq6
In what applications are surface-mounted thermostats used?
Surface-mounted thermostats are often used in control panels, utility rooms, temporary installations, and in service and maintenance setups.
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faq7
What is an electric thermostat?
An electric (electronic) thermostat is a temperature controller that uses an electric temperature sensor and electronic circuitry. These thermostats offer more features than mechanical models, such as capillary thermostats or bimetallic models.
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faq8
What is a capillary thermostat?
A capillary thermostat is a mechanical thermostat that regulates temperature without electronics or an external power source. The temperature is registered by a liquid-filled sensing bulb, which, by means of pressure, actuates a mechanical switch contact via a capillary tube. When the temperature changes, the system switches automatically.
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faq9
What is a bimetallic thermostat?
A bimetallic thermostat uses two metal strips attached to each other that have different coefficients of thermal expansion. When the temperature changes, the metals expand or contract at different rates, causing the bimetallic strip to bend. This bending is used to operate a switch, for example, to open or close an electrical contact.
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faq10
When should you choose an electric thermostat?
Electric thermostats can offer more advanced features, such as PID control, whereas simple flush-mounted or surface-mounted thermostats typically only switch on and off. This makes electric thermostats better suited for precise and demanding temperature control applications, such as programming schedules and setpoints.
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faq11
What is temperature monitoring and protection?
Temperature monitoring and protection focuses not on control, but on safety. The goal is to prevent dangerous overheating by permanently shutting down a system when a limit value is exceeded. The following components, among others, are used for this purpose:
- safety temperature limiters (STB)
- temperature limiters
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faq12
What is a safety temperature limiter (STB)?
A safety temperature limiter (STB) is a device that automatically and safely shuts down a system as soon as a preset temperature limit is exceeded. The STB operates independently of the normal temperature control system.
Features:
- permanent shutdown (manual reset or replacement required)
- increases system and process safety
- helps ensure compliance with laws and regulations
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faq13
Where are STB's primarily used?
Safety temperature limiters are primarily used in thermal oil systems, boilers, and hot water heaters, as well as in furnaces and industrial heating processes.
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faq14
Are there differences between an STB and a temperature limiter?
STB's are designed for applications with high safety requirements and have a redundant internal structure, i.e.:
- two independent measurement and processing channels
- each channel monitors the limit value separately
- relays connected in series
- an additional diagnostic channel checks plausibility
Even in the event of an internal fault, the system remains safely shut down. Mandatory for high-risk applications.
A temperature limiter has:
- no redundant design
- consists of a single measurement and switching channel
- is used for lower safety requirements. Suitable for simple protection, but not for critical processes.
<br/>
faq15
How do you choose the right temperature monitoring and protection?
Temperature range:
- The cut-off point is above the operating temperature
- but below the maximum allowable temperature
- for small margins → electronic STB required
- Mechanical STB's typically up to ±600°C
Response speed during rapid temperature rises:
- Use sensors with low thermal mass
- Avoid thermowells if possible
- Place the sensor as close as possible to the heat source
Switching capacity
- the STB usually switches a contactor
- In small installations, power can be switched directly
- maximum current values must not be exceeded
Internal fuse (electronic STB)
- Protects against overcurrent
- Prevents permanently closed contacts
- Replacement is necessary after tripping
Standards and certifications
Depending on application:
- DIN EN 14597 (Europe)
- ATEX (explosive atmospheres)
- UL / CSA (U.S. and Canada)
Summary
- Flush and surface mounting determine accessibility and installation
- Electrical thermostats offer accuracy and flexibility
- Temperature monitoring and protection are essential for safety
- The right choice prevents damage and complies with standards
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relatednews
Related news and information
downloads
Related documents
Temperature monitoring
Temperature monitoring
Downloaden (5 MB)
Panel-mounted thermostat
Panel-mounted thermostat
Downloaden (9.9 MB)
Built-in thermostat
Built-in thermostat
Downloaden (2.2 MB)
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