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Double thermocouple type K with B-Head

€96.93 *

Prices incl. VAT plus shipping costs of 4,95 € to GER (incl. VAT)

Delivery time 4 Workdays to GER (AT, NL, BE +1 workdays)

Repeated order: check settings carefully and change if necessary.
C - Mounting length
keine Auswahl
(C0050) 50 mm
(C0100) 100 mm
(C0150) 150 mm
(C0200) 200 mm
(C0250) 250 mm
(C0400) 400 mm
(C0500) 500 mm
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  • Long-term stable temperature probes over years
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Tel.: +49 (0)7653 96 59 771
E-Mail: jmaentele@testo-sensor.de
Our duplex immersion probe thermoelment type K with B-head is intended for use in the high... more
Product information "Double thermocouple type K with B-Head"

Our duplex immersion probe thermoelment type K with B-head is intended for use in the high temperature range up to +800 °C. It has two thermocouples built in. It has two thermocouples installed, allowing you, for example, to operate two different evaluation units or to increase reliability in safety-relevant processes. In complicated installation situations, you can simply switch to the second thermocouple instead of removing the probe. They are installed in direct contact with the medium or using immersion sleeves. We offer brass or stainless steel immersion sleeves as well as mounting flanges and compression fittings made of different materials as accessories.

Here you can find our downloads for the Double thermocouple type K with B-Head

pdf-download Data sheet Double thermocouple type K with B-Head
pdf-download Instruction manual Double thermocouple type K with B-Head
pdf-download Operating instruction Double thermocouple Type K with B-Head
pdf-download Declaration of Conformity Double thermocouple type K with B-Head

Immersion double thermocouple with head - General Information

Measuring range -40 °C to +800 °C
Perm. (°C) conn. head -40 °C to +100 °C
Accuracy -40 °C to +375 °C: ±1,5 °C | 375 °C to 1.000 °C: ±0,004 |t| according to DIN IEC 60584 Class 1
Response time t63 / t99: information is available on request

Immersion double thermocouple with head - Supply and output

Measuring element 2 x Thermocouple Type K
Measuring point Measuring point isolated
Measurement signal Thermovoltage

Immersion double thermocouple with head - Ambient conditions

Protection class IP65 according DIN 60529 
Humidity and moisture condensation resistance according to application-specific qualification

Immersion double thermocouple with head - Certificates and Standards

Standards DIN EN 61326-1:2013 | DIN EN IEC 63000:2019-05
Directive RoHS 2011/65/EU | 2014/30/EU
Certificates Certificate of suitability (on request)

Immersion double thermocouple with head - Technical Drawing

C - Mounting length
All dimensions in mm

Immersion double thermocouple with head - Protection sleeve

Material Stainless steel 1.4571 | 316TI
Diameter (mm)1} 6
Mounting length (mm)2} 50, 100, 150, 200, 250, 300, 400, 500
1} Tolerance ± 0,1 mm | 2} Tolerance ± 1% | Please note: For this type the mounting length is 15 mm longer

Immersion double thermocouple with head - Connection head

Design Form B
Material Aluminium
W/H/Ø (mm) 76/82/70
Color RAL 9006 aluminium silver
Cable gland with strain relief
Cable electricial connection Screw terminals max. 2,5mm²
Clamping range (mm) 4,8 to 13
Sensor unit Fixed

Immersion double thermocouple with head - Delivery

Assembly instructions by means of existing protection sleeve, mounting flange, thermowell or compression fitting.
Delivery and Packaging Probe, seperatly packaged in PE bag
Matching accessories Immersion sleeve, Heat-conducting paste, Compression fitting, Mounting flange

Immersion double thermocouple with head - Important assembly advices

Measuring errors can occur due to heat dissipation to the environment. To keep these as small as possible, we recommend immersing the thermowell of your temperature sensor as deeply as possible into the medium to be measured during installation. The optimum installation depth should be 10-15 times the Ø of the thermowell or, when using a thermowell, the Ø of the thermowell. When installing in pipelines whose Ø does not have a sufficiently deep installation depth, you should install the probe either at an angle or in a pipe elbow. Make sure that there is sufficient space for the sensor to be removed. 1) Installation with sufficient installation depth 2) Installation at an angle with small pipe Ø 3) Not like this: Minimum installation depth not reached

Installation by means of compression fitting: Please tighten the union nut of the compression fitting by hand as far as it will go (clearly noticeable). For compression fittings with PTFE pressure ring, please make a 1/4 turn with a wrench suitable for the width across flats. These compression fittings can be used several times in this way. In the case of compression fittings with stainless steel cutting ring, the compression fitting connects to the protection tube. This connection is pressure resistant up to 40 bar. However, the compression fitting can only be used once. It must also be tightened more firmly. Please tighten it with 1 3/4 turns.

Mounting by means of mounting flange: Please make sure that the Ø of the mounting flange matches the Ø of the protective sleeve. For B-head fittings or very long protection sleeves, we recommend a stainless steel or aluminum mounting flange due to its stability.

Mounting by means of immersion sleeve (4): Please note that the Ø and the length of the immersion sleeve must be selected to match the installation situation so that the minimum immersion depth can be achieved. Since the sensor is not inserted directly into the medium, but via the immersion sleeve, the response times are somewhat slower. The sensor should be selected so that the thermowell touches the bottom of the immersion sleeve and the air cushion around the thermowell is as small as possible. The use of thermal paste can improve the response times.

Please lay the cable with reserve loop (5) and in such a way that no water can penetrate the sensor head. This allows you to extend the sensor without disconnecting the electrical connection.


Qualification measurement series to ensure the function of our temperature probes over their service life

Qualifizierungsmessreihe Robust even with temperature changes Temperature probes are exposed to harsh environmental conditions, such as changing temperatures and humidity, and should still work reliably in the field for 15 years or more. Checkmark
Qualifizierungsmessreihe Resistant to heat and humidity Extremely varying ambient conditions cause immense stress for the temperature probe and the design must be suitably robust and qualified.        
Qualifizierungsmessreihe Long-term stable in any weather Continuous exposure to sunlight, snow, fog, cold and ice shall not impair the function of the temperature probe and compliance with the specification.        
Qualifizierungsmessreihe Robust even under high vibration load Depending on the application, compressors and fans generate strong vibrations which are transmitted to components and cables. Therefore the used temperature probes have to be vibration resistant (20g). Checkmark
Qualifizierungsmessreihe Reliable in practice: high pull-out force The robust design ensures the necessary cable pull-out resistance, even under vibration and higher temperatures.        
Qualifizierungsmessreihe Efficient through short response time Depending on the application, short response times may be necessary to ensure efficient control of the system. Our sensor design is optimised for this requirement and we prove response times.        
Qualifizierungsmessreihe Corrosion-resistant even in salt spray Temperature probes are also used in coastal regions. For this reason, the temperature probes must also be able to withstand salty air for a lifespan of 15 years.        

Applicable for this probe type

industry: Glass industry, Machinery and apparatus engineering, Power generation, Steel and iron industry
Connection head: Form B
Temperature range: -40 °C to +800 °C
Thermocouple: 2 x Type K Class 1
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