MTT MS3108 Terminal Block Type Frequency/Analog Converter

The MTT MS3108 terminal block frequency-to-analog converter reads a pulse train from a flow meter, tachometer, or similar sensor and delivers it as two independent, isolated DC outputs from a single unit — enough to feed a control system and a separate recorder or totalizer at the same time. It accepts a wide range of pulse types, including dry contact, open collector, AC or DC voltage pulses, and even a pulsed 4-20mA signal, so it drops into most existing installations without rewiring the sensor.

Full isolation between input, both outputs, and power keeps every connected device electrically separate and blocks noise from a switching sensor or long pulse-cable run. A choice of AC or DC power lets it fit panels without a dedicated low-voltage bus, and the DIN-rail housing mounts right where the pulse wiring terminates.

It is a natural fit for distributing one flow or speed measurement to two systems, converting pulse-output sensors to standard analog signals, or any application where a single frequency measurement needs redundant isolated outputs.

Frequency RangeWithin 0-20Hz to 0-20kHz
Input TypesDry contact, open collector, AC voltage pulse, DC voltage pulse, 4-20mA DC pulse
Pulse Width / Duty Ratio20µs min.; 40-60%
Max Continuous Input30V DC max. / 40mA DC max.
Output 1 & 2Current (0-20mA, 4-20mA) or voltage (10mV-20V range), independently configurable
Zero / Span AdjustmentApprox. ±5% of span each
AccuracyBetter than ±0.3% of span
Response Time8s at 20Hz; 1s at 200Hz; 500ms at 2kHz and above
Temperature StabilityBetter than ±0.2% of span per 10°C change
Power Supply100-240V AC, 24V DC, or 110V DC
Power Consumption7.0VA (AC), 1.7W (24V DC), 2.5W (110V DC)
Isolation4-way isolation between input, output 1, output 2, and power
Dielectric Strength2000V AC for 1 minute
Enclosure / MountingDIN rail mounting
DimensionsW49.8 × H102.0 × D40.0 mm
Weight140g max.
Operating Temperature-5 to 55°C
Storage Temperature-10 to 60°C

Download MTT MS3108 Terminal Block Type Frequency/Analog Converter information here

Datasheet: MTT_SpecSheet1_MS3108_Rev200_E

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