Hengesbach Resistance Thermometer with Screw Connection TP 26

 The  TP26 temperature sensors have threaded connections and come in a stainless steel housing with or without a transmitter. These are high-performance devices used in processes that require high hygiene levels (e.g. breweries, dairies, beverage industry, pharmaceutical industry, etc.)

The PT 100 switch comes with 3 wires in its standard, Class A form according to EN 60751. Accuracy classes B 1/2,
B 1/3, B 1/10 DIN and other switch types (single or double PT 100) are available. The utilisation of the measuring inserts must be adapted to the requirements with regard to temperature, length, vibration resistance and measuring accuracy. Tapered sensor tips for particularly short response times are, for example, obtainable for regulatory processes.

The version with an exchangeable measuring insert allows the measuring point to be accessible all the time without interrupting the process or having to open the device; this offers the advantage of additional safety and saves resources. The process connection is a metal threaded connection in the form of a conical seal, with an EHEDG certificate and the corresponding welding sockets and adaptors.


  • process connection with hygiene design, ehedg
  • exchangeable measuring insert
  • single or double PT100
  • optionally with measuring transducer
  • short addressing times and tapered sensor tip
  • "FR" hosuing in IP 67
  • optional as a quicktemp version for measuring points requiring quality assurance measures



Design configuration

Typefield housing (Cr Ni ST)  
Temperature sensorPT 100 acc. to EN 60751, exchangeable measuring insert (standard),  
 Insert tube 1.4571  
Measuring insert, electrical1 x PT 100 in a 2-, 3- or 4-wire circuit, standard: 1 x 3-wire circuit, Class A,  
 2 x PT 100 in 2- or 3-wire circuit  
Electrical connection- M16,1.5 cable connection, MS-nickel-plated,  
 - optional: M12 x 1 round plug, 4-pin  
Accuracy- standard: Tolerance class A according to EN 60751,  
 - optional:Tolerance categories B 1/10, 1/5, 1/3, 1/2 
Response timeT05 (measured in water): 6 s (design-dependent, d = 6 mm)  
 < 6 s with tapered sensor tip, on request)  
Measuring material temperatureTmax at the sensor = -20... +200°C  
Housing materialstainless steel 1.4301 (standard field housing)  
Sensor materialstainless steel 1.4571, optional 316L = 1.4435 or 1.4404,  
 optional: high surface quality  
Sensor diameterstandard: continuously smooth, d = 6 mm,  
 optional:tapered sensor tip d = 4 mm(exchangeable measuring insert)
  tapered sensor tip d = 3 mm or 2 mm(non-exchangeable measuring insert)
Sensor length- TP16: 50 mm, 100 mm (standard),  
 - TP26: 20 mm (standard),  
 - deviating lengths on request  
Type of protectionEN 60529,IP 67 with cable connection, optionally with cable output 
Permissible pressurePN = 10 bar, depending on design and temperature  
CE conformityEMV guidelines are met, CE symbol  

Process connections

 - TP16/TW39...T215 => G½ B metal with sealing cone  
 - TP26/TW39...T427 => M12 x 1.5 metal with sealing cone  


Parts for assembly-- zem / TP16, Item No. 06002000  
  welding socket, metal seal G½, with PG-positioning 
 -- zem / TP26, Item No. 07002000  
  -- zem / TP26, Item No. 07002000 
 -- zem / TP 16 K, Item No. 06002001  
  welding socket, with collar, d = 40 mm, metal seal G½ 
 -- zem / TP 26 K, Item No.  
  welding socket, with collar, metal seal M12 x 1.5 
 -- zfl / MG 50-TP16,  
  tapered connection DN 50 according to DIN 11851, with welded zem / TP16 
 -- zfl / VA-TP16,  
  VARIVENT DN 50/40 (d = 68 mm), with welded zem / TP16 
 -- ztm / DN 40/50/65/80/100 – TP16,  
  welded T-piece according to DIN 11850, Series 2, 316L, with a metallic G½ 
  internal and external surface electropolished 
 -- ztm / DN 40/50/65/80/100 – M12  
  welded T-piece according to DIN 11850, Series 2, 316L, with M12 x 1.5 connection, 
  internal and external surface electropolished 


Electrical connectionceramic connection socket  
 flexible connection wires  
 sheathed cable version (vibration-resistant version)  
 transmitter TE 42, programmable, 4...20 mA, 2-wire switch (standard)  
 transmitter TE 41, programmable, galvanically separated  
 transmitter TE 52, HART  
 transmitter TE 82, PA  
Calibrationfactory calibration, calibration certificate (3-point or 5-point), with DKD standard  
Certificatesmaterial certificate according EN 10204, EHEDG,FDA 

Download Data Sheet: Resistance Thermometer with Screw Connection TP 26

Ref: hengesbach.com