OPT-SNAP-AITM-i

SNAP-AITM-i SNAP 2-Ch Isolated Type E,J, or K Thermocouple Analog Input Module

T SNAP-AITM-i provides two isolated channels of analog-to-digital conversion. Each channel can be configured for -150
to +150 mV DC, or -75 to +75 mV DC, or for type E, J, or K thermocouple operation.
 
In addition to having two channels isolated from each other, the module is also transformer isolated and optically
isolated from other modules and devices.
 
Part of the SNAP PAC System, the module mounts on a SNAP PAC rack with a SNAP PAC brain or rack-mounted
controller. Analog, digital, and serial I/O modules can all be on the same rack. Such an I/O unit is also well suited for PC-
based control or for use as intelligent remote I/O for an Allen-Bradley RSLogix PLC system, such as ControlLogix,
MicroLogix, or CompactLogix.
 
If you do not need channel-to-channel isolation, see SNAP-AITM or SNAP-AITM-8.
 

Input Range	From -150 mV to +150 mV From -75 mV to +75 mV
Maximum Over Range	± 10% (= ± 27500 counts)
Resolution	6 µV from -150 to +150 mV 3 µV from -75 to +75 mV
Cold Junction Temperature Compensation	Automatic when used with SNAP brains
Input Filtering	-3 dB @ 7 Hz
Input Response Time (% of span/delta V/delta time)	63.2%/95 mV/23 mS
DC Common Mode Rejection	>-120 dB
AC Common Mode Rejection	>-120 dB @ 60 Hz
Maximum Survivable Input	±15 volts
Maximum Operating Common Mode Voltage	250 V
Accuracy	0.06% (90 µV) @ 150 mV (full scale) 0.1% (75 µV) @ 75 mV (full scale)
DRIFT: Gain Temperature Coefficient	5 µV / °C
DRIFT: Offset Temperature Coefficient	2 µV / °C
Thermocouple Accuracy [°C]   From factory   After user gain and offset commands	±2.0 (E, J, and K) ±0.8
Isolation: Optical	4000 V
Isolation: Transformer	1500 V
Isolation: Channel to Chan­nel	250 V continuous (1500 V transient)
Power Requirements	5 VDC (±0.15 ) @ 200 mA
Input Resistance	100 Megohms (each channel)
Ambient Temperature:   Operating   Storage	0 °C to 70 °C -25 °C to 85 °C
Torque, hold-down screws	4 in-lb (0.45 N-m)
Torque, connector screws	3 in-lb (0.34 N-m)
Agency Approvals	CE, FM, RoHS, DFARS
Warranty	Lifetime

Rev: 04/13