TEC420 Temperature Transmitter Spare Parts List and Technical Selection Guide

TEC420 Spare Parts Ordering Overview

This spare parts list applies to the TEC420 temperature transmitter and related accessories, including gaskets, device packages, ceramic terminal blocks, extension wires, seals, replaceable inserts, software, and various terminal heads and transmitter modules. All spare parts are provided with order numbers for convenient engineering maintenance and procurement.

Spare Parts List and Specifications

The table below lists the order numbers, names, and specification descriptions of the main spare parts. Please select according to actual needs.

Terminal Heads and Transmitter Modules

The following are terminal heads, transmitters, and related accessories. Some products are being phased out; please pay attention to availability.

Terminal Heads

• TA20A: Aluminum with epoxy resin coating, ambient temperature up to +100°C, ATEX +95°C. Used to mount measuring inserts or connection sockets, can be installed on the armature or protective sleeve. Product is being phased out, limited availability.
• TA20B: Black polyamide material, ambient temperature up to +80°C, protection class IP65. Used to mount measuring inserts or connection sockets.
• TA30A: Aluminum, polyester powder coating, body blue, cover gray. Ambient temperature -50...150°C, protection IP66/68, NEMA 4X. Used to secure terminal blocks or head transmitters + optional display.
• TA30D: Aluminum, polyester powder coating, body blue, cover gray. Ambient temperature -50...150°C, protection IP66/68, NEMA 4X. Used to secure 2 head transmitters or terminal blocks.

Transmitter Modules

• TMT84: iTEMP TMT84, PROFIBUS PA protocol. Dual sensor input, advanced diagnostics, electrical isolation 2kV. Applications: RTD, TC, Ohm, mV. Current consumption 11mA. Mounting: B-type head, DIN EN50446. Factory settings: CH1 Pt100 three-wire °C, CH2 inactive.
• TMT85: iTEMP TMT85, FOUNDATION Fieldbus protocol. Dual sensor input, advanced diagnostics, electrical isolation 2kV. Applications: RTD, TC, Ohm, mV. Current consumption 11mA. Mounting: B-type head, DIN EN50446. Factory settings: CH1 Pt100 three-wire °C, CH2 inactive.
• TMT181: iTEMP TMT181, PC-programmable head transmitter. 2-wire 4-20mA, electrical isolation. Fault response: NAMUR NE 43. Mounting: B-type head, DIN EN50446. UL certified. Product is being phased out, limited availability.
• TMT182: iTEMP TMT182, HART protocol head transmitter. 2-wire 4-20mA, electrical isolation. Fault response: NAMUR NE 43. Mounting: B-type head, DIN EN50446. UL certified. Product is being phased out, limited availability.
• TMT82: iTEMP TMT82, HART protocol 2-wire temperature transmitter. Dual universal sensor input, electrical isolation 2kV. Applications: RTD, TC, Ohm, mV. With drift detection and sensor backup, optional SIL 2/3 certification, suitable for safety-critical applications.

Display and Configuration Tools

• TID10: Display unit for head transmitters. Dot-matrix measured value display, 12 DIP switches. Settings: FF simulation, write protection; PA bus address, write protection. Compatible with TMT85, TMT84, TMT82, TMT71, TMT72.
• TXU10: Configuration kit for PC-programmable devices. Includes setup program and PC interface cable with USB port.
• FXA195: Commubox FXA195, modem for connecting HART field devices to a computer via USB. SIL2, IEC61508. Can be connected to intrinsically safe signal circuits.

Selection and Procurement Recommendations

When purchasing, please confirm the compatibility of spare parts with existing equipment and pay attention to replacement solutions for discontinued products. For safety-critical applications, prioritize models that support SIL certification, such as TMT82.

• Confirm transmitter protocol: HART, PROFIBUS PA, or FOUNDATION Fieldbus.
• Check whether the terminal head material and protection class meet the on-site environment.
• For discontinued products, it is recommended to stock up in advance or consult for alternative models.