Temperature Probes
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TEMPERATURE PROBES THERMOCOUPLES AND RESISTANCE THERMOMETERS

TABLE OF CONTENTS HOW TO ORDER ELECTRICAL TEMPERATURE MEASUREMENT WITH THERMOCOUPLES LIMIT DEVIATIONS BASIC VALUES DESIGN VERSIONS OF THE CABLE THERMOCOUPLES TYPE OVERVIEW TE-MI-301 TE-MI-302 TE-MI-306 TE-MI-313 TE-MI-314 TE-MI-303-HG TE-MI-303 TE-BAND

ELECTRICAL TEMPERATURE MEASUREMENT WITH RESISTANCE THERMOMETERS 20 DESIGN VERSIONS OF THE CABLE RESISTANCE THERMOMETERS 28 TYPE OVERVIEW 29 ACCREDITED DAkkS-CALIBRATION LABORATORY 43

HOW TO ORDER All cable sensors in this catalog are described in detail in their technical specifications and identified by a short designation. The "OPTIONS" sections provide information with which you can modify the cable sensors. Please note that apart from the versions described in the catalog there are a wide variety of application-specific solutions. Please contact us should you require one. ELECTRICAL TEMPERATURE MEASUREMENT WITH THERMOCOUPLES TEMPERATURE From the point of view of physics, heat is an expression of the internal energy in a body arising from the molecular movement...

TEMPERATURE SCALE The physical basis of temperature measurement is the thermodynamic temperature scale. It is based on the laws of Boyle-Mariotte (p ~ 1/V) as well as Gay-Lussac (p ~ V) and the resulting equation for ideal gases: International Temperature Scale ITS 90 p · V = R · T p = Pressure, V = Specific volume, R = Specific gas constant, T = Temperature The thermodynamic temperature can be represented excellently with a gas thermometer. Since this method is too laborious for practical temperature measurement, an international temperature scale has been created that was specified through...

Thermocouples have some advantages compared to resistance thermometers: Smaller construction forms are possible, they have a larger temperature measuring range and are notably less sensitive to mechanical stresses. However, the higher temperature tolerance classes and the increased installation work are opposing factors.The combination of the thermoelectric wires and the material composition are standardized in order to ensure trouble-free interchangeability. The thermoelectric voltage is very low and amounts to only a few pV/K. In order to carry out the measurement the electric circuit has...

Thermocouples are divided into three tolerance classes in accordance with EN 60584. These reference thermoelectric wires with a 0 0.25 mm to 3 mm and apply to the state of delivery. Possible aging during operation cannot be taken into consideration, since it is application-specific. The specified temperature ranges do not contain any limits for the application. These are ranges within which the described tolerances are defined. Limit deviations for thermocouples according to EN 60584

Put generally, the thermoelectric voltage/K is higher, the greater the difference in the metals of both legs are. Of the thermocouples listed, the NiCr/CuNi element (Type E) has the highest EMF. By contrast, the thermocouple Type B has the lowest EMF, since the two thermo legs differ only in the height of the rhodium alloy content. The thermoelectric voltages as a factor of the temperature were calculated as the basic values and defined in the standards IEC 584 or EN 60584 respectively. These values all refer to a reference junction temperature of 0 °C. If a deviating reference junction...

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TYPE OVERVIEW OF STANDARD PLUG CONNECTIONS Plug connection Plug PHYSICS, Resolution 0.1 °C Plug LEMO, (couplers) THERM 1 plug /couplers THERM 2 plug /couplers Option: Individual connector mounting at customer request (provision)

TE-MI-301 MINERAL INSULATED THERMOCOUPLE FLEXIBLE WITH REINFORCED WIRE ENDS COMPLETE INSTRUMENTS DESCRIPTION OF THE STANDARD VERSION: Flexible mineral insulated thermocouple Nominal length up to 500 mm – diameter up to 6.0 mm MI cable sheath made of Inconel 2.4816 Diameter consistent Thermocouple NiCr-Ni (Type K) Measuring point insulated Thermocouple tolerance to EN 60584 Class 1 Connection via free wire ends (20 mm length) Measuring range -100 °C to 500 °C Version with 2 measuring points Sensor with PTFE heat-shrink tubing complete shrinking Nominal length change Diameter change ORDER:...

TE-MI-302 MINERAL INSULATED THERMOCOUPLE FLEXIBLE WITH FREE WIRE ENDS COMPLETE INSTRUMENTS DESCRIPTION OF THE STANDARD VERSION: Flexible mineral insulated thermocouple Nominal length up to 500 mm – diameter up to 6.0 mm With brass adapter sleeve MI cable sheath made of Inconel 2.4816 Diameter consistent Thermocouple NiCr-Ni (Type K) Measuring point insulated Thermocouple tolerance to EN 60584 Class 2 FEP-insulated connection strands – length 50 mm 10 mm stripped and tin-plated Measuring range -100 °C to 500 °C Version with 2 measuring points Sensor with PTFE heat-shrink tubing complete...

TE-MI-306 MINERAL INSULATED THERMOCOUPLE FLEXIBLE WITH DIRECT PLUG CONNECTION THERM 1 COMPLETE INSTRUMENTS DESCRIPTION OF THE STANDARD VERSION: Flexible mineral insulated thermocouple Nominal length: up to 500 mm - diameter up to 6.0 mm With directly mounted plug LEMO MI cable sheath made of Inconel 2.4816 Diameter consistent Thermocouple NiCr-Ni (Type K) Measuring point insulated Thermocouple tolerance to EN 60584 Class 1 Measuring range -100 °C to 500 °C Connector mounting at customer request (see page 11) Thermal contacts Type K Version with two measuring points Sensor with PTFE...

TE-MI-313 MINERAL INSULATED THERMOCOUPLE FLEXIBLE WITH DIRECT PLUG CONNECTION LEMO COMPLETE INSTRUMENTS DESCRIPTION OF THE STANDARD VERSION: Flexible mineral insulated thermocouple Nominal length up to 500 mm – diameter up to 4.5 mm With directly mounted THERM 1 plug MI cable sheath made of Inconel 2.4816 Diameter consistent Thermocouple NiCr-Ni (Type K) Measuring point insulated Thermocouple tolerance to DIN EN 60584 Class 1 Measuring range -100 °C to 500 °C Connector mounting at customer request e.g. Type K – high-temperature up to max. 350 °C (see page 11) Sensor with PTFE heat-shrink...