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Red handheld digital thermometer with four-channel LCD display, 168x73x35mm

TENMARS ELECTRONICS

TENMARS ELECTRONICS TM-747D 4-Channel Thermometer electrician tool

SKU CH-W3FF-B8B9S MPN TM-747D

Measures four thermocouple channels simultaneously with seven type selections, 16,800-record datalogging, dual LCD, RS-232 and USB interfaces, and selectable °C/°F/°K units

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Measures seven thermocouple types for versatile applications
  • Stores 16,800 records for extended data logging
  • Dual LCD shows T1-T2 and T3-T4 simultaneously
  • USB interface connects to Windows XP through 10
  • Hi/Lo audible alarms alert to temperature thresholds

Four-Channel Thermometer

The TENMARS TM-747D is a digital thermometer designed for electricians and technicians who need to monitor up to four temperature points simultaneously. It accepts seven thermocouple types including K, J, T, E, R, S and N for diverse measurement tasks. The dual LCD shows T1-T2 and T3-T4 differentials directly on the 4-digit display. Selectable °C, °F and °K units suit various reporting standards.

Build Integration

The unit measures 168x73x35mm and weighs approximately 330g, fitting into a tool bag or mounting on a panel. Power comes from a user-supplied battery, so no external supply is required. Data transfers through a USB PC serial interface compatible with Windows XP through 10. RS-232 connectivity offers an alternative for legacy logging systems. The 16,800-record datalogging capacity frees the operator from manual note-taking during long sessions.

Sustained Operation

Accuracy holds at ±(0.05% rdg + 0.7°C) for K, J, E, T and N types, with specific derating below -100°C. R and S types maintain ±(0.05% rdg + 3°C). Temperature coefficient is 0.05%±0.07°C per °C outside the 18°C to 28°C reference range. Hi/Lo audible alarms alert the user to drift during extended runs. Max, Min, AVG and time-stamped data hold functions preserve critical readings without constant attention.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $125.99
Pricier than about 61% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameTENMARS
Model nameTM-747D
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

How many temperature readings can the TM-747D store in its datalogging memory before it fills up?

The meter can log up to 16,800 records, which is the maximum capacity of its internal memory.

Does the TM-747D produce any audible noise or heat during continuous all-day operation?

The only audible output is the Hi/Lo alarm buzzer; the unit itself runs silently and generates no noticeable heat.

Which thermocouple probes must I already own to use the four channels on this thermometer?

You need up to four K, J, T, E, R, S or N type thermocouples, as the meter accepts any of those seven types on its four input channels.

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