Monarch Instrument MT-190 User Manual

M-190W Magnetic Sensor

SPECIFICATIONS:

Speed Range: 1-99,999 RPM

Operating Distance: 0.005” [0.127 mm] gap from target
Minimum Target Size: 0.106” [2.692 mm] minimum diameter
Power required: None - Self Generating AC voltage
Output Signal: 190V P-P maximum
Pole Piece Magnet Diameter: 0.106 inch [2.692 mm]
Operating Temperature: -100° to 225° F [-73° to 107° C]
Standard Cable Length: 8 feet [2.438 m]
Dimensions: 2.0” (L) x 0.625” [50.8 x 15.875 mm]
Weight: 3 oz [85 g]

Specifications are subject to change without notice.

Figure 1 M-190W Dimensions

OVERVIEW:

The M-190W Magnetic Sensor is a self-powered gear sensor that is most popular for use with 60 tooth 20 pitch gears. The sensor mounts
within 0.005 inches [0.127 mm] of a minimum 0.106 inch [2.692 mm] diameter ferrous target. The sensor self-generates an AC signal and
requires no power from the display module.

The M-190W is compatible with all Monarch ACT Series panel tachometers and MT-190 Magnetic Trigger Sensor/Amplifier models.

CONNECTION DETAIL:

Wire Color Function

Black AC Signal
White AC Signal
Shield Housing Ground

When using the M-190W with any Monarch ACT Series panel tachometer, refer to the panel tachometer instruction manual for sensor
connection detail.

OPERATION:

Magnetic sensors convert motion of a ferrous target into an AC voltage output proportional to speed. The target must not be smaller than
the magnetic poll piece (0.106 inches, 2.692 mm) or larger than the diameter of the sensor (0.625 inches, 15.875 mm). Gear teeth are
preferred, but bolt heads, slots or keys also work. The Monarch ACT Series panel tachometers will typically operate from all 2-wire design
magnetic sensors. The stainless steel and waterproof housing of the M-190W sensor allow operation in harsh locations. The user can
increase the cable length up to a total of 500 feet [152.4 m] in length.

In order to comply with EU Directive 2002/96/EC on Waste Electrical and Electronic Equipment (WEEE):

This product may contain material which could be hazardous to human health and the environment. DO NOT DISPOSE of
this product as unsorted municipal waste. This product needs to be RECYCLED in accordance with local regulations, contact
your local authorities for more information. This product may be returnable to your distributor for recycling - contact the
distributor for details.

MONARCH INSTRUMENT * 15 Columbia Drive * Amherst, NH 03031 USA * Tel: [phone] * Fax: [phone]

E-mail: [e-mail] * Website: www.monarchinstrument.com

1071-4853-112R (0609)

MT-190 Magnetic Trigger Sensor with Amplifier

SPECIFICATIONS:

Speed Range: 1-99,999 RPM

Operating Distance: 0.25” [6.35 mm] gap from target
Minimum Target Size: 0.106” [2.692 mm] minimum diameter
Power required: 3.3 to 24 Vdc, 4 mA
Output Signal: Same as power supplied, TTL compatible with 5 Vdc supplied
Operating Temperature: -100° to 225° F [-73° to 107° C]
Standard Cable Length: Magnetic Sensor - 8 feet [2.438 m], Amplifier - 1.5 feet [0.457 m]
Dimensions: 2.0” (L) x 0.625” [50.8 x 15.875 mm]
Weight: 6.4 oz [181 g]

Specifications are subject to change without notice.

M-190W Magnetic
Sensor

BNC

Figure 1 Amplifier Module Dimensions

OVERVIEW:

MT-190P Magnetic Trigger Sensor/Amplifier with plug

The MT-190 Magnetic Trigger Sensor has an Amplifier Module that enhances the performance of the M-190W Magnetic Sensor. The
Amplifier extends the operating gap to 0.25 inches [6.35 mm] from the ferrous target. The MT-190 Magnetic Trigger Sensor with Amplifier
can sense gear teeth, bolt heads or shaft keys. The MT-190 provides a pulsed output signal and is TTL compatible with 5 Vdc supplied.

The MT-190 has an 8 foot [2.438 m] cable with 3 tinned wires (MT-190W) or 1/8 [3.5 mm] phone plug (MT-190P) termination.

The MT-190W is compatible with all Monarch ACT Series panel tachometers and Data-Chart 1250 Paperless Recorders.

The MT-190P is compatible with the following Monarch instruments: Pocket Laser Tachometer 200 (PLT200), SPSR Self-Powered
Sensor, Deluxe Nova-Strobe x Series (dbx and dax) and Phaser-Strobe pbx.

The MT-190W and MT-190P can also output pulses to a user’s data acquisition system.

Magnetic Trigger
Amplifier Module

CONNECTION DETAIL:

The Magnetic Sensor must be connected to the Magnetic Trigger
Amplifier Module. Refer to Figure 2 for connection detail. The
connection details for the Amplifier Module are shown below Figure 2.

When using the MT-190W with any Monarch instrument, refer to the
instrument instruction manual for sensor connection detail.

Magnetic Sensor to Amplifier Connection Detail

BLACK to

Shield to

WHITE to +

+

Figure 2

Amplifier Module shown
with tinned wires (plug
also available)

When using the MT-190P with any Monarch instrument, plug the 1/8
[3.5 mm] phone plug into the input jack on the respective instrument.

When using the Amplifier Module with the GE-200 Gasoline Engine
Sensor, the 15 foot [4.572 m] MX-005 cable is connected to the OM-200
sensor and then the BNC end of the MX-005 cable is connected to the
BNC connector on the Magnetic Trigger Amplifier Module.

OPERATION:

Magnetic sensors convert motion of a ferrous target into an AC voltage
output proportional to speed. The Amplifer Module converts the signal
to pulses. The target must not be smaller than the magnetic poll piece
(0.106 inches, 2.692 mm) or larger than the diameter of the sensor (0.625
inches, 15.875 mm). Gear teeth are preferred, but bolt heads, slots or
keys also work. The Monarch ACT Series panel tachometers will

Connection Detail for Amplifier Tinned Wires:

Wire Color Function

Brown Positive Power Supply (+V)
Blue Common (Com)
Black Signal (+V to 0 Vdc Pulse) (Sig)
Shield Housing Ground (Com)

Connection Detail for Amplifier Plug:

Shield (Common)

Base (Common) - Blue

Tip (Signal) - Black

Middle (+V) Excitation- Brown

typically operate from all 2-wire design magnetic sensors. The stainless
steel and waterproof housing of the M-190W sensor allow operation in harsh locations. The user can increase the cable length up to a total
of 500 feet [152.4 m] in length.

MONARCH INSTRUMENT * 15 Columbia Drive * Amherst, NH 03031 USA * Tel: [phone] * Fax: [phone]

E-mail: [e-mail] * Website: www.monarchinstrument.com

1071-4853-112R (0609)