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Tach-4A Portable Precision Tachometer
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 Tach-4A
The innovative non-contact Tach-4A is the first portable optical instrument to combine a high accuracy, wide range Tachometer, multi-function Totalizer/Counter and a Timer (Stopwatch). One of the most accurate portable tachometers available.
Accuracy: + 0.0001 RPM
Range: 5 to 500,000 RPM
Memory: Maximum, minimum, last measurement 
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 Tach-4A is menu programmable from a six button membrane keypad. A unique scaling feature allows Tach-4A to function from one or multiple pulses per revolution as a tachometer, ratemeter and totalizer/counter
displaying data in engineering units. The optional 0-5V TTL compatible Pulse Output (PO) is supplied with a cable for BNC interface to vibration data collection or other equipment. Tach4A is available with a remote sensing capability. Monarch offers a full line of remote sensors including optical, infrared, magnetic or laser.
 Tach4a Brochure
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 made in the USA |
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Tach-4A Specifications
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| Specifications |
Tach-4A and Tach4AR |
| Range |
5-500,000 RPM |
| Frequency Range |
0.083-8,333.3 Hz |
| Accuracy |
0.0015% of reading |
| Resolution |
Up to 0.0001 RPM |
| Totalizer/Counter |
1-999,999 counts |
| Timer (Stopwatch) |
Hrs, Min, Sec, 0.01 Sec to 100 Hrs |
| Display |
6 digit alphanumeric, backlit LCD, update twice per second, self-test mode |
| Power* |
4 "AA" (LR6) Alkaline batteries or optional NiCad batteries and AC Recharger |
| Size (L x W x H) |
6.2" x 3.74" x 1.3" (157 x 95 x 33 mm) |
| Weight |
14 oz. (22 kg) |
| N.I.S.T. Certificate |
Included |
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Tach-4A Ordering Information
| ITEM NO. |
MODEL |
DESCRIPTION |
| 6100-010 |
Tach-4A |
Digital Programmable Tachometer/Totalizer/Counter and Timer/Stopwatch - 5 to 500,000 RPM, with 4 "AA" Alkaline batteries, 12 inches of reflective tape and padded carrying case
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| 6100-011 |
Tach-4A Kit 115 |
Tach-4A with 4 "AA" NiCad batteries, R-5 (115 Vac) Recharger and 5 foot roll of reflective tape in latching carrying case |
| 6100-012 |
Tach-4A Kit 230 |
Same as Tach-4A Kit 115, but with R-6 (230 Vac) Recharger |
| 6100-020 |
Tach-4AR |
Digital Programmable Tachometer/Totalizer/Counter and Timer/Stopwatch - 5 to 500,000 RPM, with internal optics and connector for optional remote sensors, 4 "AA" Alkaline batteries, 12 inches of reflective tape and padded carrying case |
| 6100-021 |
Tach-4AR Kit 115 |
Tach-4AR with 4 "AA" NiCad batteries, R-5 (115 Vac) Recharger, 5 foot roll of reflective tape and ROS-5P sensor in latching carrying case |
| 6100-022 |
Tach-4AR Kit 230 |
Same as Tach-4AR Kit 115, but with R-6 (230 Vac) Recharger |
| 6100-040 |
Tach-4AR PO |
Digital Programmable Tachometer/Totalizer/Counter and Timer/Stopwatch - 5 to 500,000 RPM, with internal optics and connector for optional remote sensors, TTL Pulse Output and 6 foot cable with BNC connector, 4 "AA" Alkaline batteries, 12 inches of reflective tape and padded
carrying case |
| 6100-041 |
Tach-4AR PO Kit 115 |
Tach-4AR PO with 4 "AA" NiCad batteries, R-5 (115 Vac) Recharger, 5 foot roll of reflective tape and ROS-5P sensor in latching carrying case |
| 6100-042 |
Tach-4AR PO Kit 230 |
Same as Tach-4AR PO Kit 115, but with R-6 (230 Vac) Recharger |
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Tach-4A Ordering Accessories
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ITEM NO.
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MODEL
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DESCRIPTION
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6180-057
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ROS-P
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Remote Optical Sensor with 8 foot cable and mounting bracket
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6180-020
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IRS-P
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Infrared Sensor with 8 foot cable and 1/8" mono plug
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6180-017
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MT-190P
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Magnetic Trigger Sensor/Amplifier with 8 foot cable
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6180-028
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EC-25P
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25 foot Extension Cable for remote sensors with male/female 1/8" phone plug connectors
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6180-061
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R-5B
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Recharger, 115 Vac - 50/60 Hz, with 4 "AA" NiCad batteries
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6180-063
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R-6B
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Recharger, 230 Vac - 50/60 Hz, with 4 "AA" NiCad batteries
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6180-064
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B-4
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Four "AA" Rechargeable NiCad Batteries
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6180-043
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CC-3
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Plastic Latching Carrying Case
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| 4180-146 |
CC-4 |
Padded Carrying Case Pouch |
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6180-070
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T-5
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Reflective Tape - 5 foot roll, 0.5 inch wide
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| 6180-079 |
T-5WP |
Reflective Tape - Waterproof, 5 foot roll, 1.0 inch wide |
| 6180-071 |
T-150 |
Reflective Tape - 150 foot roll, 0.5 inch wide |
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5190-105
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CAL-N.I.S.T.
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N.I.S.T. Traceable Certificate of Calibration/ Re-calibration
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