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

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) I�54

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

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)	I�54
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]