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MTL4575 temperature converter THC or RTD input + Alarm original from UK

MTL4575 temperature converter THC or RTD input + Alarm original from UK

MTL4575 temperature converter THC or RTD input + Alarm original from UK

Product Details:

Place of Origin: UK
Brand Name: MTL
Certification: CE
Model Number: MTL4575

Payment & Shipping Terms:

Minimum Order Quantity: 5 pcs
Price: according to the purchase quantity
Packaging Details: carton
Delivery Time: approx. 4 weeks
Payment Terms: T/T payment
Supply Ability: 100pcs
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Detailed Product Description

MTL4575 temperature converter THC or RTD input + Alarm

MTL4575 converts a low-level dc signal from a temperature sensor mounted in a hazardous area into a 4/20mA current for driving a safe-area load. Software selectable features include linearisation, ranging, monitoring, testing and tagging for all thermocouple types and 2-, 3- or 4-wire RTDs. (For thermocouple applications the HAZ-CJC plug on terminals 1–3 includes an integral CJC sensor). Configuration is carried out using a personal computer. A single alarm output is provided and may be configured for process alarm or to provide notice of early thermocouple failure.


See also common specification

Number of channels


Signal source

THC types J, K, T, E, R, S, B or N to BS 60584 and XK

mV input

RTDs 2/3/4-wire platinum to BS 60751

Pt 100, Pt 500, Pt 1000

Cu-50 & Cu-53

Ni 100/500/1000  DIN 43760

Location of signal source

Zone 0, IIC, T4-6 hazardous area

Division 1, Group A, hazardous location

Input signal range

–75 to +75mV, or 0 to 400Ω (0 to 1000Ω Pt & Ni sensors)

Input signal span

3 to 150mV, or 10 to 400Ω (10 to 1000Ω Pt & Ni sensors)

RTD excitation current

200µA nominal

Cold junction compensation

Automatic or selectable

Cold junction compensation error

≤ 1.0°C

Common mode rejection

120dB for 240V at 50Hz or 60Hz (500ms response)

Series mode rejection

40dB for 50Hz or 60Hz

Calibration accuracy (at 20°c)

(includes hysteresis, non-linearity and repeatability)

Inputs: (500ms response)

mV/THC:  ± 15µV or ± 0.05% of input value (whichever is greater)

RTD:  ± 80mΩ

Output:  ± 11µA

Temperature drift (typical)


mV/THC:  ± 0.003% of input value/°C

RTD:  ± 7mΩ/°C

Output:  ± 0.6µA/°C

Example of calibration accuracy and temperature drift

(RTD input - 500ms response)

Span:  250Ω

Accuracy:  ± (0.08/250 + 11/16000) x 100%

    = 0.1% of span

Temperature drift:  ± (0.007/250 x 16000 + 0.6) µA/°C

    = ±1.0µA/°C

Safety drive on sensor failure

Upscale, downscale, or off

Contact Details

Contact Person: Ms. Steven

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