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