Yokogawa TM20
Thermometer, Universal Dual inputs Model

  • Ideal for Industrial use
  • Supports type K/J/E/T thermocouples
  • Analog signal input
  • 2-channel simultaneous measurement
  • Allows input of comments regarding measurement process
  • Easy to manage PC data (automatic layout in Excel)
  • High data capacity
    - Collector mode only: 5000 data units, Logging mode only: 20,000 data units (Allows mixing of collector mode and logging mode measurement data)
    2-channel simultaneous measurement is recorded as two data points
  • Logging function, User calibration function, Analog signal input, Data management software
Click here for larger image - Yokogawa TM10 Series Thermo-collecter, Universial dual Inputs ModelClick here for larger image - Yokogawa TM20 Series Thermometer, Univerisal Dual Input Model
Yokogawa TM20 Shown

Product Information
Datasheet 479 KB
Manual 1.8 MB
Ordering Info Jump to Product Models, Prices, Accessories, and Ordering Information
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Thermocouple probes

(-200°C to 1372°C) [-328°F to 2501.6°F]
Type K:-200°C to 1372°C[-328°F to 2501.6°F]
Type E:-200°C to 700°C[-328°F to 1292°F]
Type J:-200°C to 1000°C[-328°F to 1832°F]
Type T:-200°C to 400°C[-328°F to 752°F]
(Possible temperature ranges with the TM20)

Analog signal input

The TM20 can accept inputs from a sensor that outputs voltage signals ranging ±100 mV or ±1 V. A U-shaped Miniature connector is required.

Memory Key

Each press of this key saves the measured data, along with 3 other monitoring items: the name of the object being measured, operator’s name, and date and time of measurement.

Selection of registered tag name

Select from the list of up to 50 registered tag names (objects to be measured).

Collector/Logging mode selector key

Switches between the collector mode (saves measured data when necessary) and logging mode (saves measured data continuously).
When used in the collector mode only, saves up to 5000 data items.
When used in the logging mode only, saves up to 20000 data items.
Measuring interval: 1 second to 24 hours (Under simultaneous 2-channel measurement with the TM20, 2 seconds is the minimum.)
Start-of-measurement time: timer can be set.

User-friendly FUNC key

You can select setup items in the same way as you choose options from the built-in menu of a cellular phone.

Selection of operator name

With the (1) key, you can recall a list of up to 10 operator names and can also change any of these names.

Record-keeping on measurement failure handling

By pre-registering a list of up to 32 comments on how to handle particular measurement failures, you can keep records of how the measurement failure was dealt with by selecting the desired comment from the list using the (4) key.
(The TM10 supports this feature with TM10 Version 1.10 when used with application software version 1.30 or later.)

Setup Keys

Register tag names, set alarm points, and define measuring conditions, such as the measuring in-terval for the logging mode. These setting tasks can also be carried out from a PC.

Digital Input Terminals

For connecting an optional non-contact probe

RS-232C I/O terminals

Used to exchange data with a PC or send data to a dedicated printer.

Ordering Information
Model Description Buy Online Price
54011 Yokogawa 54011 Portable Digital Thermo-collector (Universal dual input model) Discontinued
Included Accessories
  • 1 - Software
  • 1 - Waterproof cover
  • 1 - Instruction Manual
  • 2 - AA Alkaline dry Batteries (L6R)
Optional Accessories
Carrying Cases and Holders
93011 Yokogawa 93011 Waterproof covers TM10 (5 pieces) Buy Now Sale $27.65
(Reg. $30.00)
93012 Yokogawa 93012 Soft Case TX-10/TM20 Buy Now $30.00
Probes and Test Leads
90020 Yokogawa 90020 TC-K Temperature Probe Buy Now $104.00
90021 Yokogawa 90021 Probe for Type K T/C 1.6mm dia 150 mm long Buy Now $104.00
90022 Yokogawa 90022 Probe for Type K T/C 3.2mm dia 500 mm long Buy Now $125.00
90023 Yokogawa 90023 Probe for Type K T/C Needle Type 1.6 mm dia 120 mm long Buy Now $125.00
90024 Yokogawa 90024 TC-K Temperature Probe Buy Now $131.00
90030 Yokogawa 90030 Probe for Type K T/C Fast Response, Surface Temp Measurement Buy Now $193.00
90031 Yokogawa 90031 TC-K Temperature Probe Buy Now $197.00
90032 Yokogawa 90032 Probe for Type K T/C Fast Response, Rugged, Surface Temp Measurement Buy Now $253.00
90033 Yokogawa 90033 TC-K Temperature Probe Buy Now $262.00
245907 Yokogawa 245907 Beads T/C Probe Type K Buy Now Sale $50.22
(Reg. $54.00)
99008 Yokogawa 99008 U-Shaped Connector Buy Now $24.00
99009 Yokogawa 99009 K-Shaped Connector Buy Now $24.00
Printers and Cables
245921 Yokogawa 245921 Extension Cord 5m Buy Now Sale $98.44
(Reg. $107.00)
245922 Yokogawa 245922 Extension Cord 10m Buy Now Sale $106.02
(Reg. $114.00)
94010-D Yokogawa 94010-D AC Adaptor with UL/CSA standard power for CA150 Buy Now Sale $121.83
(Reg. $131.00)
97080 Yokogawa 97080 Thermal paper for printer (10 rolls) Buy Now $88.00