TM121 Spare Parts List Overview

The TM121 spare parts list is an important reference for the maintenance and procurement of industrial temperature measurement instruments. This list provides the order numbers and specification parameters of key spare parts such as adapters, cable glands, sealing rings, terminals, protection tubes, and temperature transmitters. Engineering technicians can use this list to quickly identify and order the required components, ensuring stable equipment operation.

Connection and Sealing Spare Parts

Adapters and Cable Glands

  • 51004915: M24X1.5 to M20X1.5 adapter, external M20x1.5, internal M24x1.5, stainless steel material.
  • 51004949: Cable plug M20x1.5.
  • 51006845: Cable gland NPT 1/2, suitable for cable diameter D4-8.5, protection rating IP68.

Sealing Rings and Gaskets

  • 71182602: Sealing kit, including 5 O-rings 3.69x1.78 and 5 O-rings 74.7x2.75.
  • 71367427: Gasket, 10 pieces per pack.
  • 71438343: Silicone O-ring spare parts kit, size 71x3, 5 pieces per pack.
  • 71110007: Copper sealing ring (specific specifications not provided).
  • 71367414 / 71367420 / 71367424 / 71367425: Copper sealing ring, 10 pieces per pack.
  • 71586353: Gasket spare parts kit D21/d6 Viton, 3 pieces per pack.
  • 71586366: Gasket spare parts kit D21/d6 Neoprene, 3 pieces per pack.
  • 71586370: Gasket spare parts kit D21/d3 Viton, 3 pieces per pack.
  • 71586372: Gasket spare parts kit D21/d3 Neoprene, 3 pieces per pack.

Plugs

  • XPT0002-D3: Plug.
  • XPT0002-DC: Plug.

Terminals and Heat Transfer Oil

Ceramic Terminals

  • 71111510 / 71111513 / 71111514 / 71111515: Ceramic terminals, please consult the supplier for specific specifications.

Heat Transfer Oil

  • 71249291: Heat transfer oil FDA certified, 30g.
  • 71312729: Heat transfer oil HSC 340, 100g.

Protection Tubes and Ferrule Threads

iTHERM TK40 Ferrule Threads

TK40-: iTHERM TK40 ferrule thread, welded compression fitting, hygienic design. Suitable for the food, beverage, and pharmaceutical industries. Related spare parts kit: XPT0001- sealing spare parts kit, 5 pieces per set.

Protection Tube TT131

TT131-: Protection tube for industrial thermometers. Metric version, suitable for the chemical, oil and gas, and power industries.

Temperature Transmitters and Terminal Boxes

Temperature Transmitters

Model Description Key Parameters
TMT31- 2-wire temperature transmitter, single sensor input, RTD application. Factory setting: Pt100, 4-wire, 0...+100°C, low fault current. Installation: type B terminal head, DIN EN50446. —
TMT71- 2-wire temperature transmitter, single universal sensor input, electrical isolation 2kV (input/output). Application: RTD, TC, ohm, and mV. Factory setting: Pt100, 4-wire, 0...+100°C. —
TMT72- 2-wire temperature transmitter, single universal sensor input, electrical isolation 2kV (input/output). Application: RTD, TC, ohm, and mV. Factory setting: Pt100, 4-wire, 0...+100°C. —

Terminal Boxes

  • TA20AB-: Terminal box for temperature assemblies, simple type, cover screwed. Internal geometry conforms to DIN EN 50446.
  • TA30A-: Terminal head for terminal blocks or head transmitters + optional display. Cover: low, hinged, optional window. Material: aluminum. Coating: polyester powder coating. Color: body blue, cover gray. Ambient temperature: -50...150°C (housing). Protection: IP66/68, NEMA 4X (housing).
  • TA30EB-: Terminal head for terminal blocks or head transmitters + optional display. Cover: low, threaded, optional window. Material: aluminum. Coating: polyester powder coating. Color: body blue, cover gray. Ambient temperature: -50...+150°C (housing). Protection: IP66/68, NEMA 4X (housing).

Temperature Inserts

TS111-: iTHERM TS111 insert, replaceable insert, conforms to IEC 60751. Metric version conforms to DIN 43735. Features: fastest response time through iTHERM QuickSens, optimized process control; maximum robustness through iTHERM StrongSens, ensuring highest process safety.

Selection and Ordering Notes

When ordering spare parts, please be sure to verify the compatibility between the order number and the device model. For transmitters, confirm the sensor type, wiring method, and output signal. For seals, pay attention to material (such as Viton, Neoprene, silicone) and media compatibility. Protection tubes and ferrule threads should be selected according to process connection and hygiene requirements. It is recommended to refer to the original manufacturer's technical manual or consult the supplier to ensure accuracy.