Status Instruments DM4000U, Manual

Page: 76 / 94

ADDITIONAL INPUT SPECIFICATION
Input Average
(iv)
Input impedance Thermal drift
Type Acquisition Rate (RTD current) per ºC
T/C 6.8Hz 1M ohm
(ix)
0.001%
mV 8.9Hz 1M ohm
(ix)
0.001%, 0.004%
(x)
Volts 8.9Hz 2M ohm 0.002%, 0.011%
(xi)
Current 8.9Hz 51 ohm 0.001%
Pt 100 1.7Hz (less than 1.1mA) 0.013°C
Cold junction(see T/C) NA 0.06°C
Isolation Power Supply: 2500VAC )
Output Options: 500VAC ) see safety information
Comms Interface: 500VAC ) on page 8
INPUT OVER-RANGE PROTECTION
Input Pin Usual Function Absolute Maximum Rating
1 0V NA
2 RTD 30VAC
(xii)
3 Volts 200VAC
(xii)
4 Millivolts 200VAC
(xii)
5 Curret 100mA
RELAY OUTPUT BOARD (OPTION 01 AND 02)
Maximum Rated Load 7A@250V 7A@30V
Maximum Power 1750VA 210W
Maximum Switching Voltage 380V 125V
Electrical Life 10
5
operations at rated load
Mechanical Life 50 million operations
Contact shunt capacitance 200pF
This is due to the Varistor and causes a reactance of 15Mohms at 50Hz.
Alarm detection delay 200mS
APPENDIX B
APPENDICES
Page 76