BASIC INFO
Production overviews
MTL 4500 Intrinsically Safe Isolators MTL4575
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.
MTL4575 safe isolator product specification
SPECIFICATION
See also common specification
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
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)
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.
Other related models for MTL4500 range as below for your reference.
MTL4501-SR
MTL4504
MTL4510
MTL4510B
MTL4511
MTL4513
MTL4514D
MTL4514_B
MTL4516
MTL4516C
MTL4517
MTL4521
MTL4521L
MTL4523
MTL4523L
MTL4523R
MTL4523V-VL
MTL4524
MTL4524S
MTL4525
MTL4526
MTL4541
MTL4541A
MTL4541AS
MTL4541B
MTL4541P
MTL4541S
MTL4541T
MTL4544
MTL4544A
MTL4544AS
MTL4544B
MTL4544D
MTL4544S
MTL4546
MTL4546C
MTL4546S
MTL4546Y
MTL4549
MTL4549C
MTL4549Y
MTL4573
MTL4575
MTL4576-RTD
MTL4576-THC
MTL4581
MTL4582B
MTL4531
MTL4532
MTL4561
MTL4599
MTL4599N
Do you have any question about MTL4575? Please contact me online or send me an inquiry!
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.
MTL4575 safe isolator product specification
SPECIFICATION
See also common specification
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
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)
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.
Other related models for MTL4500 range as below for your reference.
MTL4501-SR
MTL4504
MTL4510
MTL4510B
MTL4511
MTL4513
MTL4514D
MTL4514_B
MTL4516
MTL4516C
MTL4517
MTL4521
MTL4521L
MTL4523
MTL4523L
MTL4523R
MTL4523V-VL
MTL4524
MTL4524S
MTL4525
MTL4526
MTL4541
MTL4541A
MTL4541AS
MTL4541B
MTL4541P
MTL4541S
MTL4541T
MTL4544
MTL4544A
MTL4544AS
MTL4544B
MTL4544D
MTL4544S
MTL4546
MTL4546C
MTL4546S
MTL4546Y
MTL4549
MTL4549C
MTL4549Y
MTL4573
MTL4575
MTL4576-RTD
MTL4576-THC
MTL4581
MTL4582B
MTL4531
MTL4532
MTL4561
MTL4599
MTL4599N
Do you have any question about MTL4575? Please contact me online or send me an inquiry!
