293 ADAM-4000 Series User Manual
Appendix A Technical Specifications
A.7 ADAM-4018/4018+ 8-channel Analog Input
Module
Table A.9: ADAM-4018/4018+ Specifications
AI channel number
ADAM-4018: 6 differential and 2 single-ended
ADAM-4018+: 8 differential
Input type Thermocouple with mV, V, or mA
Input range
J, K, T, E, R, S and B Thermocouple
ADAM-4018:
±15 mV, ±50 mV, ±100 mV, ±500 mV, ±1 V, ±2.5 V
and ±20 mA
ADAM-4018+:
±20 mA and 4~20 mA
Output
speed (bps)
Maximum distance
RS-485 (2-wire)
1200, 2400, 4800, 9600, 19.2K, 38.4K, 57.6K, 115.2K
4000 ft. (1200 m)
Isolation voltage
3000 V
DC
Resolution 16-bit
Sampling rate 10 samples/second (total)
Bandwidth 13.1 Hz
Accuracy ±0.1% or better
Zero drift ±6 V/°C
Span drift ±25 ppm/°C
CMR @ 50/60 Hz 120 dB
NMR @ 50/60 Hz 100 dB
Input impedance Voltage: 20 M, Current: 120
Support protocol
ADAM ASCII (ADAM-4018 & 4108+)
MODBUS/RTU (ADAM-4018+ only)
Watchdog timer
ADAM-4018: System (1.6 second)
ADAM-4018+: System (1.6 second) and communication
Power requirements
+10 to +30 V
DC
(non-regulated)
Power consumption
0.8 W @ 24 V
DC
Burn-out detection All T/C input (ADAM-4018+ only)
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