Specifications

MTL 5500 Intrinsically Safe Isolators MTL5546Y

MTL 5500 Intrinsically Safe Isolators MTL5546Y

MTL4575 – MTL5575 TEMPERATURE CONVERTER THC or RTD input + Alarm
The MTLx575 converts a low-level dc signal from a temperature sensor mounted in a hazardous area into a 4/20mA current for driving a safearea 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.

MTL 5500 Intrinsically Safe Isolators MTL5546Y

MTL5546Y product specification

MTL 5500 Intrinsically Safe Isolators MTL5546Y

SPECIFICATION

See also common specification

MTL 5500 Intrinsically Safe Isolators MTL5546Y

Number of channels

One
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

MTL 5500 Intrinsically Safe Isolators MTL5546Y

Location of signal source

Zone 0, IIC, T4-6 hazardous area
Division 1, Group A, hazardous location

MTL 5500 Intrinsically Safe Isolators MTL5546Y

Input signal range

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

MTL 5500 Intrinsically Safe Isolators MTL5546Y

Input signal span

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

MTL 5500 Intrinsically Safe Isolators MTL5546Y

RTD excitation current

200µA nominal

MTL 5500 Intrinsically Safe Isolators MTL5546Y

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)

Inputs:
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

Early burnout

Early burnout detection for thermocouples (when selected)
Alarm trips when loop resistance increase is > 50Ω

Output range

4 to 20mA nominal into 600Ω max.

Alarm output (configurable)

Relay ON in alarm, 250mA @ 35V max

Maximum lead resistance (THC)

600Ω

Response time

Configurable – 500 ms default
(Accuracy at 100/200ms – contact MTL)

LED indicator

Green: power and status indication
Yellow: alarm indication, on when contacts are closed

Maximum current consumption (with 20mA signal)

50mA at 24V

Power dissipation within unit (with 20mA signal)

1.2W at 24V

Safety description

Refer to certificate for parameters. Um=253V rms or dc

Configurator

A personal computer running MTL PCS45 software with a
PCL45USB serial interface.
MTL 5500 Intrinsically Safe Isolators MTL5546Y

Other related product models for MTL5546Y as below for your reference.