OPT-SNAP-AIRTD

SNAP-AIRTD SNAP 2-Ch 100-Ohm Platinum RTD Analog Temperature Input Module

The SNAP-AIRTD provides two channels of analog temperature input. Nominal input range is -200 to +850 degrees C.
Although the two channels are not isolated from each other, the module is transformer isolated and optically isolated
from other modules and devices. Modules are factory calibrated.
 
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.
 

3-wire RTD input	100-ohm platinum; α= 0.00385
Input Temperature Range	-200 °C to 850 °C (-328° to +1,582° F)
Input Range	0 to 400 ohms
Over-Range Limit	to 400 ohms
Resolution (average)	0.042 °C (0.016 ohms)
Input Filtering	-3 dB @ 0.1 Hz
Data Freshness (Max)	100 ms
Input Response Time (% of span/delta temp/delta time)	63.2 %/598 °C/25 ms
Lead Compensation	Automatic when used with SNAP brains
DC Common Mode Rejection	>-120 dB
AC Common Mode Rejection	>-120 dB at 60 Hz
Excitation (typical)	1.25 mA constant current
Maximum Lead Resistance	>40 ohms single wire (all leads to be equal resistance)
Maximum Fault Voltage at Input (between any 2 field wires)	±15 V
Maximum Operating Common Mode Voltage	250 V
Accuracy   From factory   After setting gain and offset	0.8 °C 0.6 °C
Isolation	1500 V
Power Requirements	5 VDC (±0.15 ) @ 190 mA
Operating Temperature	0 °C to 70 °C
Storage Temperature	-25 °C to 85 °C
Torque, hold-down screws	4 in-lb (0.45 N-m)
Torque, connector screws	5.26 in-lb (0.6 N-m)
Agency Approvals	UL, FM, CE, RoHS, DFARS
Warranty	Lifetime

Rev: 04/13