DIN 3440:1984-07

1 Field of application
2 Concepts
      2.1 Temperature control device (TR)
      2.2 Temperature limiting device
      2.3 Operating differential
      2.4 Time constant
      2.5 Temperature control and limiting devices
             powered by an auxiliary energy source
      2.6 Combination
3 Safety requirements
      3.1 Materials, design
      3.2 Electrical components
      3.3 Permissible ambient temperatures
      3.4 Effect of ambient temperature
      3.5 Thermal overload capacity of temperature
             sensor
      3.6 Type of protective enclosure
      3.7 Settings and parameters of temperature
             controllers
      3.8 Operating differential of two-step and
             multi-step controllers and temperature
             limiting devices
      3.9 Settings and characteristics of temperature
             limiting devices
      3.10 Time constant
      3.11 Effect of auxiliary energy source
      3.12 Temperature limiting devices with enhanced
             safety
      3.13 Heat transfer at temperature sensor
      3.14 Devices having an additional control and
             signalling function
      3.15 Combination systems
      3.16 Devices with switchable functions
      3.17 Monitoring devices
4 Testing
      4.1 Test houses
      4.2 Types of test
      4.3 Test samples and test documentation
      4.4 Checking of construction
      4.5 Functional testing
      4.6 Determination of time constant
      4.7 Testing the effect of the auxiliary energy
             source
      4.8 Testing the thermal overload capacity
      4.9 Testing of other characteristics of TR, FR,
             TW, ATW and STW devices
      4.10 Testing of the special characteristics and
             features of TB, STB and Th devices
      4.11 Testing of the performance of electronic
             devices under disturbed operating conditions
      4.12 Enhanced safety for ATW, STW and STB devices
      4.13 Service test
5 Installation and operating instructions