MTT MS3702 Slim Plug-In RTD Temperature Transmitter

The MTT MS3702 is a slim plug-in RTD temperature transmitter that reads a resistance temperature detector, linearizes the signal, and delivers it as one or two isolated DC outputs. Support for the common RTD types, including Pt100, keeps one model useful across most process temperature applications, and the plug-in socket base lets it be swapped out for calibration or replacement in seconds without disturbing the field wiring.

Where a dual-output configuration is used, the two outputs stay isolated from each other, the input, and the power supply, letting a single RTD feed both a control loop and an independent monitoring or logging system without interference between circuits. Flexible AC or DC power options and wall or DIN rail mounting let the MS3702 slot into existing panel layouts, and its fast, stable response suits continuous temperature monitoring on process vessels, motors, and utility equipment.

Input TypesPt 100Ω, JPt 100Ω, Pt 50Ω, Ni 508.4Ω, or custom (range -200 to +850°C depending on type)
Minimum Input Span30-100°C depending on RTD type
Excitation CurrentApproximately 1mA for Pt type at 0-100°C
Lead Wire Resistance200Ω maximum per wire
Output0-20mA DC, 4-20mA DC, or 10mV to 20V DC span range (single or isolated dual output)
Output Load (Current)Single 4-20mA: max 750Ω; dual outputs: max 550Ω (Output 1), 350Ω (Output 2)
Isolation4-way isolation between input, output, power, and ground
Power Supply100-240V AC, 24V DC, or 100-240V DC (approx. 5.5-7.0VA AC or 1.6-1.8W DC)
AccuracyBetter than ±0.15% of span (at 25°C±5°C)
Temperature EffectBetter than ±0.2% of span per 10°C change
Response Time170ms maximum (0-90%)
CMRRMinimum 100dB (500V AC, 50/60Hz)
Dimensions (W x H x D)29mm x 86mm x 125mm
WeightMain unit 120g; socket 80g
MountingWall or DIN rail mounting, plug-in socket base
TerminalsM3.5 screw terminals
Operating Temperature-5 to 55°C ambient (storage: -10 to 60°C)
Operating Humidity5-90% RH, non-condensing
StandardsCE marked (EMC and Low Voltage Directives); Installation Category II, Pollution Degree 2

Download MTT MS3702 Slim Plug-In RTD Temperature Transmitter information here

Datasheet: MTT_SpecSheet_MS3702_Rev27_E

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