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TM Series Hourmeters

The TM Series hourmeters record the operating time of vehicles or powered equipment.

They are electromechanical and have a quartz base time counter that ensures accuracy (better than ±0.02% over the entire range). They can record up to 99,999.9 hours (9,999.9 for TM612/624) and include an automatic recycle to zero hours feature. The TM Series models have a shock-proof and tamper-proof, totally sealed case made of an engineered plastic. These small, lightweight time meters are rugged and durable. They are the answer to applications requiring a low DC power and reliable hourmeter. The TM612/624 model includes a three-hole mounting shock ring for extreme shock protection. These hourmeters can be used on any engine where operating time needs to be recorded. All it requires is a DC power source (refer to Specifications).

  • CE (European Conformity) mark
Specifications Downloads Models
Specifications Drawer: 

Power Input: 12 to 24 VDC

Power Consumption: Less than 0.03 W @ 12 VDC; 0.4 W @ 24 VDC.

Accuracy: ± 0.02% over entire range.

Temperature Range: -40°F to 185°F (-40°C to +85°C).

Dial (Face Plate): White numerals (over black background).

Time Scale:

  • TM4592-95 models: 6-digits 99,999.9 hours;
  • TM612/624 models: 5-digits 9,999.9 hours.
  • Automatic recycle to zero.

Vibration Resistance: Withstands 10 to 75 Hz @ 1 to 8 G’s.

Case Material: Plastic.

Bezel: Stainless Steel.

Terminations: 1/4 in. (6 mm) male blade terminals.

TM4592/4595 Shipping Weight: 5 ozs. (140 g).

Shipping Dimensions: 3-1/8 x 3 x 3 in. (79 x 76 x 76 mm) approximately.

TM612/624 Shipping Weight: 8 ozs. (230 g).

TM612/624 Shipping Dimensions: 5 x 5 x 3-1/4 in. (127 x 127 x 83 mm) approx.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information about California Propsition 65, go to www.P65Warnings.ca.gov or visit our California Proposition 65 page.

Literature Drawer: 

Additional product documentation can be found on our product support website or by clicking the Help Center button above.

6-Digits Hourmeters
Model           Bezel Type
TM4592        Bright Stainless Steel Bezel
TM4593        Black Stainless Steel Bezel\
TM4594        SAE Bright Stainless Steel Bezel
TM4595        SAE Stainless Steel Black Bezel

5-Digits Hourmeter with Shock Ring Mounting 
TM612/624     3-Hole Mount, Black Bezel