West Control Solutions MRC 5000 Recorder Manual - Manual (Page 25)

25
Appendix B - Specifications
INPUTS
Input Types/Range Type Range
Thermocouple J 0 °C to 760°C 0 °F to 1400°F
K 0 °C to 1360°C 0 °F to 2500°F
T -200 °C to 400°C -330 °F to 750°F
R 200 °C to 1650°C 400 °F to 3000°F
S 200 °C to 1650°C 400 °F to 3000°F
RTD 100 ohm Platinum -140 °C to 400°C -220 °F to 750°F
.00385 ohms/ohm/ °C
Current DC 0 to 20mA, 4 to 20mA
Internal 4.7 ohm Shunt Resistor
Voltage DC 0 to 25mV, 0 to 50mV, 10 to 50mV, 0 to 5 V, 1 to 5 V
Impedance > 100M ohm for TC and mV inputs
100K ohms for 5V inputs
4.7 ohms for mA inputs
RTD Excitation Current 150 microamps, typical
Input Scan Rate 1 scan per second for non-RTD inputs
1 scan per 1.2 seconds for RTD inputs
Input Correction Offset Adjustment, -999 to 999 units
Sensor Fault Detection Display goes to "SnSr" and pen goes upscale if a sensor break is detected
No sensor break can be detected for zero based Volt and Milliamp ranges
Display goes to "Hi" 10% above span.
Display goes "Lo" 10% below span or zero, whichever is higher.
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INPUT PERFORMANCE
Performance Under Reference Condition:
Measurement Error
Type J, K, T, R, S, and RTD: ±0.25% of span ±1 degree
mA, mV, and VDC: ±0.25% of scaled span plus 1 least significant digit
Cold Junction Compensation Error ±0.2°C @ 25°C
Cold Junction Compensation Rejection 0.04 °/°C deviation from 25°C
Linearization Error TCs: ±0.25°C typical, ±0.5°C worst case with exceptions
RTDs: ±0.1°C typical, ±0.3°C worst case
Ambient Temperature Error ±0.01% of span per°C deviation from 25°C
Common Mode Rejection >120 dB at 50/60 Hz, 260 VAC max.
Normal Mode Rejection 85 dB minimum @60Hz or greater
Isolation Universal input isolated from all outputs at 240VAC
Inputs share a common signal ground
Reference Conditions
Ambient Temperature
25 °C
Relative Humidity 60 - 70%
Supply Voltage 115 VAC, 60 Hz
Source Resistance < 10 ohms for TC input
Lead Resistance < 0.1 ohm/lead balanced (Pt100)