ATS, ATA, ATHA, ATHS Tachometers and Tach/Hourmeters 速度表，速度表/小时表

The tachometer is a rugged, transistorized instrument with solid-state circuitry for indication of engine revolutions per minute (RPM). It is equipped with a bracket for mounting into a standard 3-3/8 in. (86 mm) dash mounting hole.

■ 3000 and 4000 RPM –0 to 100,000 hours
■ Sensing from Magnetic Sensor, Battery Charging Alternator or Ignition Signal
■ High Visibility Analog Readout
■ Air Core Movement
■ Easy Calibration
■ Through Dial Lighting
■ Powered by 12 VDC Battery Available Converter for 24 to 12 VDC

The tachometer’s full 270° sweep of the pointer gives an accurate indication on a large easy–to–read scale. The dial can be illuminated for night reading. The models equipped with tachometer and hourmeter also record the elapsed running time of an engine.

Series Models
ATS Series Magnetic Sensor Signal Tach
70 - 225 pulses* 12 VDC, 2733 Hz to 13.62 kHz @ 3000 RPM
ATHS Series Magnetic Sensor Signal Tachometer/Hourmeter
70-225 pulses* 12 VDC, 2733 Hz to 13.62 kHz @ 3000 RPM
ATA Series Alternator Signal Tachometer
3-27 pulses* 12 VDC, 137 to 1330 Hz @ 3000 RPM
ATHA Series Alternator Signal Tachometer/Hourmeter
3-27 pulses* 12 VDC, 137 to 1330 Hz @ 3000 RPM or 193 to 1815 Hz @ 4000 RPM
ATHI Series Ignition Signal Tachometer/Hourmeter
4, 6 or 8 cylinder engines @ 4000 RPM
Bezel Styles Applications

Models
Magnetic Sensor Tachometer 3000 RPM; 70 - 225 pulses 12 VDC
Model # Designation
ATS-30-12 Bright Stainless Steel Bezel
ATS-30-12-A Black Stainless Steel Bezel
ATS-30-12-B SAE Bright Stainless Steel Bezel
ATS-30-12-C SAE Black Stainless Steel Bezel
Magnetic Sensor Tach/Hourmeter 3000 RPM; 70 - 225 pulses 12 VDC
ATHS-30-12 Bright Stainless Steel Bezel
ATHS-30-12-A Black Stainless Steel Bezel
ATHS-30-12-B SAE Bright Stainless Steel Bezel
ATHS-30-12-C SAE Black Stainless Steel Bezel
Alternator Signal Tachometer 3000 RPM; 3 - 27 pulses 12 VDC
ATA-30-12 Bright Stainless Steel Bezel
ATA-30-12-A Black Stainless Steel Bezel
ATA-30-12-B SAE Bright Stainless Steel Bezel
ATA-30-12-C SAE Black Stainless Steel Bezel
Alternator Signal Tach/Hourmeter 4000 RPM; 3 - 27 pulses 12 VDC
ATHA-30-12 Bright Stainless Steel Bezel
ATHA-30-12-A Black Stainless Steel Bezel
ATHA-30-12-B SAE Bright Stainless Steel Bezel
ATHA-30-12-C SAE Black Stainless Steel Bezel
ATHA-40-12-A Black Stainless Steel Bezel
Ignition Signal Tach/Hourmeter 4000 RPM; 4, 6 or 8 cylinder 12 VDC
ATHI-40-12-A Black Stainless Steel Bezel
Optional Items and Replacement Bulbs
ATVC12/24 24 VDC to 12 VDC Converter
00-00-4617 12 VDC Light Bulb
00-00-4618 24 VDC Light Bulb