SNAP-AITM-2 OPTO 22, SNAP-AITM-2 Datasheet - Page 2

• Manufacturer Part Number: SNAP-AITM-2
• Description: I/O Module
• Manufacturer: OPTO 22
• Type: Inputr

Specifications of SNAP-AITM-2

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Signal Input Type: Thermocouple/Millivolt
• Resolution: 3uV
• No. Of Analog Inputs: 2
• Brand/series: SNAP Series
• Connection To Host: Backplane
• Current, Input: 170 mA
• Dimensions: 82.55mmL×18.29mmW×90.17mmH
• Input: -50 to +50/-25 to +25 mVDC
• Input Type: Analog
• Input, Range: -50 to +50/-25 to +25 mVDC
• Mounting Type: PCB
• Number Of Channels: 2
• Primary Type: Control
• Special Features: Transformer Isolation, Optical Isolation, Thermocouple Input
• Voltage, Isolation: 1500 V
• Voltage, Supply: 5 VDC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

SNAP Analog Input Modules
Thermocouple/Millivolt Input Module
SNAP-AITM2
Thermocouple Polarity and Range
C, D, G
IMPORTANT: The mounting rack connector has 24 pins; the module
connector has 20 pins. The extra pins on the mounting rack connector
prevent misalignment of the module during installation.
Type
R, S
N
B
T
RED
RED
RED
RED
RED
-
GRAY
WHITE
ORANGE -270° C to +1,300 °C
BLACK
BLUE
+
+42° C to +1,820 °C
0° C to +2,320 °C
-50° C to +1,768 °C
-270° C to +400 °C
Range
Description
The SNAP-AITM2 module provides an input range of ±50 mV, ±25 mV,
or Type B, C, D, G, N, T, R, or S thermocouple.
Since both inputs share the same reference terminal, use isolated probes
for thermocouple inputs. If you need isolated channels on the same
module, see Opto 22 form #1182.
Specifications
SNAP-AITM2
Input Range
Resolution
Cold Junction Temperature
Compensation
Input Filtering
Input Response Time
(% of span/delta V/delta
time)
DC Common Mode Rejection >-120 dB
AC Common Mode Rejection >-120 dB @ 60 Hz
Maximum Survivable Input
Maximum Operating Com-
mon Mode Voltage
Accuracy at Full Scale
Drift: Gain Temperature
Coefficient
Drift: Offset Temperature
Coefficient
Thermocouple Accuracy [°C]
commands
Isolation
Power Requirements
Input Resistance
Ambient Temperature:
Part Number
From factory}
After user gain and offset
Operating
Storage
Two-channel analog type B, C, D, G, N, T, R, or S
thermocouple or -50 mV to +50 mVDC input
or -25 mV to +25 mVDC input
From -50 mV to +50 mVDC
From -25 mV to +25 mVDC
2 microvolts from -50 mV to +50 mV
1 microvolts from -25 mV to +25 mV
Automatic when used with SNAP
brains
-3 dB @ 2.4 Hz
63.2%/31.5 mV/66 ms
±15 volts
250 V
0.1% (50 microvolts) @ 50 mV
0.2% (50 microvolts) @ 25 mV
5 microvolts / °C
2 microvolts / °C
B, R, S
1500 V
5 VDC (±0.15 ) @ 170 mA
100 Megohms (each channel)
0 °C to 70 °C
-25 °C to 85 °C
±5
±3
Description
C, D, G
±4
±2
T, N
±3
±2
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