Tube Resistance Thermometer TP 21 Hengesbach

Tube Resistance Thermometer TP 21 Hengesbach

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The Tube Resistance Thermometers Type TP21 meet, by their design layouts, the requirements for a deadspace-free and hygienic measurement in all kinds of fluid media, like e.g. milk, beer, juice etc. The measurement occurs without a profile modification and without contacting the media by the sensing resistor, taking into account the good response times. Therefore e.g. cleaning procedures by a pig etc. are possible.

The device consists of a pipe body with neck tube in stainless steel. Integrated in the pipe body is a PT100-thermometer. Optionally the measuring insert contains one or two measuring resistors PT100, connected via the terminal block of the housing head in 2-, 3- or 4-wire circuit. The temperature sensors are to be integrated in the pipeline. Different connection versions for varying applications are available.

The screw-in resistance thermometers Type TP 12 with G ½ B – screw-in threads designed with or without transmitter are high-performance, robust and all-purpose devices for general applications without special hygienic requirements.

The temperature sensor is a PT100 Platinum resistor, standardly designed in accuracy class A according EN 60751. Accuracy classes B 1/2, 1/3, 1/10 DIN or class B are available optionally. The measurement inserts consist of replaceable single- or double-PT100 resistors. The application of the measurement inserts has to be adjusted to the needs for temperature, length, flexibility, vibration-proofness and measuring accuracy. E.g. for control processes and on-request devices with tapered tips and extra short half-life-times are available.

Safety and profitability aspects advise constructions with protective tubes in case of a possibly necessary change of the probes, so that replacements can be carried out quickly and comfortably, without decommissioning the plant or draining the tanks. Furthermore the protective tube guarantees the restiveness against mechanical stress and chemical attacks. Also variants of protective tubes to be screwed-in or welded can be designed for a quick response time.

The device consists of a pipe body with neck tube in stainless steel. Integrated in the pipe body is a PT100-thermometer. Optionally the measuring insert contains one or two measuring resistors PT100, connected via the terminal block of the housing head in 2-, 3- or 4-wire circuit. The temperature sensors are to be integrated in the pipeline. Different connection versions for varying applications are available. By means of the special design of the housing head in a reliable stainless steel field housing, the sensors are especially suited for measuring tasks in corrosive and aggressive environmental conditions. Also with applications in a wet and humid environment and under extreme conditions the design in IP65 respectively IP67 guarantees robustness and high dependability

Features:

  • deadspace-free temperature measurement
  • no contacting with media
  • for food and pharmaceutical industries
  • entirely in stainless steel
  • corrosion resistance by field housing
  • custom-designed process connections
  • optional with transmitter

Specification:

Housing field housing
Temperature sensor PT 100 acc. EN 60751, changeable measurement insert (Standard), insert tube 1.4571
Measurement insert, electrical 1 x PT 100 in 2-, 3- or 4- wire connection, standard: 1 x 3- wire connection, 2 x PT 100 in 2- or 3-wire connection
Electrical connection M16 x 1,5 – cable gland, MS nickel-plated,
Optional: M12 x 1 circular connector, 4-pins
Accuracy Standard: tolerance class A acc. to EN 60751,
Optional: tolerance class B 1/10, 1/5, 1/3, 1/2 DIN
Response time T50 (measured in water): 6 sec. (dependent on design, d = 6 mm) < 4 sec. with tapered sensor tip on request
Measured medium temperature Tmax at sensor = -20… +200°C
Housing material stainless steel 1.4301 (CrNiSt, standard-field housing)
Measuring section – material stainless steel 1.4571, optional 1.4435 or 1.4404, optional: tube in polished steel
Protection class EN 60529, IP 67 with cable gland, optional with cable connection
Pressure admissible PN = 10 bar
CE-conformity EMC-rules are fulfilled, CE-sign
Process Connection  TP21 / TW 59…T108, milk pipe screw joint with threaded double-sided neck, DIN 11851, DN20…DN100,
TP21 / TW 59…T141 , Tri-Clamp-connection acc. to ISO 2852
Other connections on request (please specify nominal width)
Neck tube: 38,5 mm x d = 16 mm (acc. to drawing)
Measuring section length: 120 mm (acc. to drawing)
Accessories
Assembly components None
Options
Electrical connection ceramic connection socket
flexible connecting wires
sheathed cable (shakeproof type)
transmitter TE 42, programmable, 4…20 mA, 2- wire connection (standard)
transmitter TE 41, programmable, galvanically isolated
transmitter TE 52, HART
transmitter TE 82, Profibus PA
Calibration factory calibrated, calibration certificate (3-point or 5-point), with DKD-standard
Certificates material certificate, acc. to EN 10204

Options (to be specified in plain text)
Transmitter (programmable), not galvanically separated TE 4200
Transmitter (programmable) galvanically separated TE 4101
Transmitter (programmable), galvanically separated EX TE 4111 EX
HART transmitter TE 52
Profibus PA transmitter TE 82
Configuration set, incl. adaptor and software for TE 41/42 TZ 41/42
Tapered sensor tip D = 3 mm or 4 mm
Accuracy class 1/3 DIN B (per PT 100)
Accuracy class 1/5 DIN B (per PT 100)
Accuracy class 1/10 DIN B (per PT 100)
Sheathed cable version (vibration-resistant version)
DKD calibration certificate => approved by an accredited DKD laboratory
Exchangeable measuring insert, d = 3 mm
Neck pipe L = 75 mm, d = 12 mm – please state other lengths –
M12 x 1 plug, 4-pin

Download Data Sheet: Tube Resistance Thermometer TP 21

Ref: Hengesbach.com

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