MTL4575 Перетворювач сигналів MTL Instruments

MTL4575

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 400? (0 to 1000? Pt & Ni sensors)

Input signal span : 3 to 150mV, or 10 to 400? (10 to 1000? 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: ± 80m?
Output: ± 11µA

Temperature drift (typical)
Inputs:
mV/THC: ± 0.003% of input value/°C
RTD: ± 7m?/°C
Output: ± 0.6µA/°C

Example of calibration accuracy and temperature drift
(RTD input - 500ms response)
Span: 250?
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 > 50?

Output range
4 to 20mA nominal into 600? max.

Alarm output (configurable)
Relay ON in alarm, 250mA @ 35V max

Maximum lead resistance (THC) : 600?

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