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The ACT-3X Panel Tachometer is a powerful NIST calibrated fully programmable tachometer and totalizer. It accepts inputs from all Monarch speed sensors or from any standard TTL generating device. The unit operates from 120/240Vac input power or from 12 or 24Vdc input power (optional). Programming is easily performed through the 5 front panel push buttons or using the optional PM Remote Software. Set up for single channel monitoring or use the auxiliary second channel input. Programmable scale factor with menu selection for multiple pulses per revolution, linear rates, totalization, single event trip speeds and rate of change in rpm. A TTL pulse repeater output is standard.


All models - Universal Input, non-contact operation from optical, infrared, laser, proximity, and magnetic sensors or direct TTL and 200mV to 50 Vac signals.

� 1/8 DIN sized
� 5 Digit LED display
� 5 to 999,990 RPM range
� Universal sensor inputs
� N.I.S.T. Traceable Certificate of Calibration included
� User configurable with front panel push buttons or Optional PM Remote Software
� View real-time data on PC* 
� Store data in Excel File in real-time*
� Universal A/C power 100 to 240 Vac,   50/60Hz or optional 12 or 24Vdc power
� Standard pulse repeater output
� Single event capture from start ans stop pulses, in units such as MPH, CM/sec, etc. Using
two sensors - for linear rate of travel on second input channel
� Optional 4-20mA or 0-5Vdc scalable output
� Optional Ethernet or USB communications
� Optional alarm relay outputs
*Requires optional USB programming cable and PM Remote Software

Note: To specify your ACT-3X, select options for input power, sensor power, analog output, communications, alarm relay outputs, and Bentley Nevada modification at checkout (additional charges to base price of $299.00 apply)

Calcert Gold
Calcert Gold is available for this item. You could purchase a plan to set up calibrations easily with us in the future life of this unit. To learn more and purchase this plan: Click Here


N/A 5 digit, 0.56” (14 mm) high red LED.


N/A 1/8 DIN by 4.5” (114 mm) deep. Panel cutout: 3.58” x 1.74” (91 x 44mm)

Input Power

N/A Optional: 12 or 24 Vdc ±20%, Isolated, 6.0 Watts. Standard: 100 - 240 Vac ±10%, 50/60 Hz

Sensor Excitation

N/A 5Vdc or optional 12Vdc or 24Vdc to sensor.

Recommended Sensors

N/A Inductive - Gas Engine GE-200 Infrared - Monarch IRS-W Laser - Monarch ROLS-W, SLS-115/230 Magnetic - Monarch M-190W or MT-190W Optical - Monarch ROS-W, ROS-P-25, ROS-HT-W-25, ROSM-5W Proximity - Monarch P5-11

Remote Programming

N/A Unit can be remotely programmed using optional communications interface and PM Remote Software.


N/A Indoor use only, Installation category II per IEC 664 Temperature: -10°C to 50°C operating per IEC 61010-1 Humidity: Maximum relative humidity 80% for temperatures up to 31°C, decreasing linearly to 50% relative humidity at 40°C.

Electrical Safety

N/A Meets EN61010-1:2001, EC low voltage directive 72/23/EEC and 89/336/EEC

Speed Range

N/A 5 to 999,990 RPM (single pulse per revolution), 0.5 to 999,990 RPM (10 pulses per revolution). Speeds below 5 RPM are possible with multiple pulses per revolution.

Input Frequency Range

N/A 0.083 Hz to 250 kHz


N/A Display Range: 0.001 to 99,999 (Only top 5 digits are shown for 100,000-999,990) Max # of counts = 16,777,216 even with 0.001 scale

Input Configuration

N/A Universal Inputs: 1 to 9,999 pulses per revolution, front panel push button programmable TTL input and 1.1V to 50vac signals, Opt: -1 to – 50Vdc

Max Measurement Rate

N/A Up to 100 times per second (Standard Gate) or up to 1000 (Fast Gate) dependent on input frequency. Input must be > measurement rate.


N/A Programmable scaling: 0.0001 to 9999.9 (front panel push button programmable).

Decimal Point

N/A User Selectable (0-3) decimal places max (front panel push button programmable).


N/A Maximum, minimum and last reading recall from front panel push buttons.

Pulse Repeater Output

N/A Standard, 0 to 5 V TTL compatible. One pulse out for each pulse in. Menu selectable polarity.

Analog Output

N/A Voltage (AO): 0 to 5 Vdc, 5mA max load (isoloated or non-isolated) or Current (IO): 4 to 20mA, 500? max load. (isolated or non-isolated), 1 to 5Vdc possible using 250? resistor) 16 bit resolution. Front panel push button programmable for full scale and offset RPM ranges.