Fixed Type, DC or AC Powered Tachometer

Brand: Monarch
Country: USA

Proximity Sensor

Self-Powered Sensors

ACT-3 Tachometer

---> please click here for Handheld Tachometer



Proximity Sensor
1-60,000 RPM. The P5-11 is a rugged industrial 2 wire probe style inductive sensor. It can be used 0.2 inches (5mm) from a 0.5 inch (12mm metallic target such as a bolt head or shaft locking key.

Optical Sensors     our most popular sensor
1-250,000 RPM. The most versatile and popular sensors we make. The ROS-W (tinned wire termination) and ROS-P (1/8" phone plug termination) are threaded stainless steel remote optical sensors with a visible red LED light source. All these sensors have the "on-target" green LED indicator.

Infrared Sensor
1-999,990 RPM. Both the IRS-P and IRS-W are proven to be reliable high speed sensors. With a working range of 12 to 25 mm from very high speed equipment or an application providing contrasting light and dark surfaces.

Magnetic Sensors

1-99,999 RPM. Self-powered gear sensor. M-190W and M190P are very popular magnetic sensors commonly used with 60 tooth 20 pitch gears. The sensors mount with 0.005 inches (0.127mm) of a 0.1 inch (2.5mm) target. These sensors require no power from our display modules as they self-generate an AC signal.

Magnetic Sensor with Amplifier Module

1-99,999 RPM. Same as the M-190 sensors but with an enhanced performance from the amplifier The amplifier extends the operating gap to 0.25 inches (6.35mm) from the target. Frequently used on gears The MT-190 and MT-190W provide a 0-5V TTL output signal.

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Self-Powered Sensors

The unique SPS Series provide a TTL compatible pulse output from any of our four input sensors. The TTL output is switch selectable positive going 0-5V or negative 5-0V pulses provided at the BNC connector. Internal rechargeable batteries provide 7 hours of portable operation. All SPS configurations can be powered by 115 Vac, 239 Vac or 5-12Vdc.The SPS Series makes use of Monarch's sensors combined with the Interface module (SPS-IM) and one of three power sources.


SPS can provide one pulse per revolution triggers for vibration, spectrum and waveform analyzers, data acquisition equipment, stroboscopes, balancing machines and recorders.

Self-Powered Series Specifications

Range (RPM)-Same as the sensor
Output signal TTL compatible pulse, 0-5V or 5-0V
Pulse Width Determined by size of target and rotational speed
Output connector BNC Connector
Power (4) "AA" (R6) NiCad batteries AC or 5-12 VDC

Self-Powered Sensors Ordering Information

Item No







Interface Module with BNC output connector, ROS-P sensor and R-5 (115 Vac) recharger/power supply




Same as SPS-5/115, but with R-6 (230 Vac) recharger/power supply




Same as SPS-5/115, but with tinned leads for 5 to 12 Vdc power and no recharger/power supply




Interface Module with BNC output connector - Order sensor and recharger separately


Item No. Model CE Description
6180-057 ROS-P X Remote Optical Sensor with 8 foot cable and mounting bracket
6180-057-25 ROS-P-25 X Same as above except with 25 foot cable.
6180-015 IRS-5P X Infrared Sensor with 8 foot cable
6180-017 MT-190P X Magnetic Trigger Sensor/Amplifier with 8 foot cable
6180-028 EC-25P ˇ@ 25 foot Extension Cable for remote sensors with male/female 1/8" phone plug connectors
6180-060 R-5 X Recharger, 115 Vac - 50/60 Hz
6180-062 R-6 X Recharger, 230 Vac - 50/60 Hz
6180-064 B-4 ˇ@ Four "AA" Rechargeable NiCad Batteries
6180-070 T-5 ˇ@ Reflective Tape - 5 Foot Roll, 0.5 inch wide

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All New Engine Tachometer ACT-3 Tachometer, OM-200 Inductive Sensor and optional ROS-5 Remote optical sensor

Ideal for / R&D / QC / EPA Emissions and Field Testing
use either sensor to read accurate RPM on fans, pulleys


How it Works

The OM-200 Sensor is mounted close to and parallel to the engine ignition coil or magneto, up to 4" away. It even works through the metal housing. Move the detector around the engine ignition source until the tachometer display starts to read.

Alternative Method
A piece of reflective tape is attached to the rotating part. The ROS Sensor is aimed at the tape and accurate RPM is displayed on the tachometer.

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ACT-3 includes N.I.S.T. Traceable Certificate of Calibration

Front panel programmable
The Engine Tachometer is available with 12Vdc, 230Vac or 115 Vac power. The ACT-3 Tachometer offers all the required output options available for easy interfacing to your data acquisition systems. Outputs include: 4-20 mA, 0-5V, TTL pulse, two alarm set points and an RS232C bi-directional serial interface. The analog outputs offer 12 bit resolution which can provide extremely accurate and repeatable readings. The operating range of the ACT-3 Tachometer is 5-999,990 RPM with an accuracy of 0.0015% + 1RPM.

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OM-200 Specifications
Detection Method: Electromagnetic induction, senses flux fields
Operating Range:  up to 4 inches (100 mm) even through metal
Operating Temperatures: 0 to 175˘XF (80˘XC)
Sensor Weight:  100 oz. (280 g)

Ordering Information

Part Number 



ACT-3 Tachometer multiple pulse per rev, user programmable, Form C relay contacts with 2 alarm set points each. Voltage output: 0-5Vdc and Current Output: 4-20mA. Pulse output: 0-5V TTL compatible. RS232C interface. Dimensions: 1/8 DIN by 7" (178 mm) deep. (Note: Specify power: 12 VDC, 115 or 230 VAC)


GE-200 includes: (1) 4180-404 Magnetic Amplifier for OM-200 Sensor, (1) OM-200 Electromagnetic Detector and 23 feet of cable. (see above dimensions) Mounting bracket included.


ROS-5W Remote optical Sensor with 8 foot cable and mounting bracket. Use with reflective tape target. 


T-5 Reflective tape-5 foot roll, 0.5 inch wide

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Excellent Technology Co.
Hong Kong: Tel. (852) 2691 3821    Fax. (852) 2900 2980

China: Tel. (86) 150 1799 2655   Fax. (86) 755 3360 9662