Your friends will be grateful:
Digital Tachometers THA3.1
Features:
  • individually programmable ratio
  • 8Bit microcontroller based
  • 4-digit LED display
  • wide operating temperature and voltage
  • mounted in the instrument panel

This digital instrument provides accurate measurement of engine angular velocity in RPM.

THA3.1 measures output signal frequency from alternator AC contact, engine electronic control unit or non-contact angular velocity sensor. The result of measurement displays on LED indicator.

Depending on versions the the tachometers have varied ratios.

Versions

Version Part Number Ratio Application
THA3.1 453813.001 2,71 CHSDM motorgraders DZ-98 (Cummins engines)
THA3.1-01 453813.001-01 1,76 CHTZ vibrating rollers VK-18
THA3.1-02 453813.001-02 3,45 CHETRA tractors (Cummins engines)
THA3.1-03 453813.001-03 0,4 BELAZ dump tracks (Cummins engines)
THA3.1-04 453813.001-04 1,71 CHTZ tractors DET-320 (YAMZ engines)
THA3.1-05 453813.001-05 0,77 CHSDM tractors T10 (Cummins engines)
THA3.1-06 453813.001-06 0,942 CHTZ tractors (with hydromechanical transmission)
THA3.1-07 453813.001-07 1,25 CHSDM tractors T10 (YAMZ and CHTZ engines)
THA3.1-08 453813.001-08 0,431 CHSDM tractors T10
THA3.1-09 453813.001-09 0,359 CHSDM tractors T10 (with electric starter)

Technical Data

Parameter Value
Display digits 4 (9,2 mm height)
Accuracy ±20 rpm
Display refresh cycle 0,5 – 2,0 sec
Supply voltage 8 – 32 V DC
Power consumption 3 W
Protection class (to IEC 60529) IР54
Operating temperature range – 45…+55 °C
Storage/Transport temperature range – 60…+65 °C
Mounting position panelboard
Dimensions 65 × 65 × 58 mm
Weight, approx. 0,12 kg

Dimensions [mm]

THA3.1 overall dimension

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