SNAP-AITM OPTO 22, SNAP-AITM Datasheet - Page 3

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

Specifications of SNAP-AITM

• Accessory Type: Thermocouple Module
• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Signal Input Type: -150 To 150mV / -75 To 75mV
• 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: -150 to +150/-75 to +75 mVDC
• Input Type: Analog
• Input, Range: -150 to +150/-75 to +75 mVDC
• Mounting Type: PCB
• Number Of Channels: 2
• Number Of Inputs: 2 Channels
• Primary Type: Control
• Resistance, Input: 100 Megohms
• Special Features: Transformer Isolation, Optical Isolation, Thermocouple Input
• Standards: UL, CSA, CE Certified
• Temperature, Operating: 0 to +70 °C
• Time, Response: 66 ms
• Voltage, Isolation: 1500 V
• Voltage, Supply: 5 VDC
• For Use With: SNAP PAC System
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Thermocouple/Millivolt Input Module
Description
The SNAP-AITM module provides two channels of analog to digital
conversion. Each channel on the module can be configured for -150
mV DC to +150 mV DC or -75 mV DC to +75 mV DC, or for type E, J,
or K thermocouple operation.
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.
SNAP-AITM
Thermocouple Polarity and Range
Type
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.
E
K
J
Red
Red
Red
-
Purple
White
Yellow
+
-270°C to +1,000 °C
-210°C to +1,200 °C
-270°C to +1,372 °C
Range
Specifications
Part Number
SNAP-AITM
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
Maximum Survivable Input
Maximum Operating Com-
mon Mode Voltage
Accuracy at Full Scale
Drift: Gain Temperature Coef-
ficient
Drift: Offset Temperature
Coefficient
Thermocouple Accuracy [°C]
commands
Isolation
Power Requirements
Input Resistance
Ambient Temperature:
SNAP Analog Input Modules
From factory
After user gain and offset
Operating
Storage
Two-channel analog type E, J, or K thermo-
couple or
-150 mV to +150 mV input or -75 mV to +75
mV input
From -150 mV to +150 mV
From -75 mV to +75 mV
6 microvolts from -150 to +150 mV
3 microvolts from -75 to +75 mV
Automatic when used with
SNAP I/O processors
-3 dB @ 7 Hz
63.2%/95 mV/23 mS
>-120 dB @ 60 Hz
±15 volts
250 V
0.06% (90 microvolts) @ 150 mV
0.1% (75 microvolts) @ 75 mV
5 microvolts / °C
2 microvolts / °C
± 2.0 (E, J, and K)
± 0.8
1500 V
5 VDC (±0.15) @ 170 mA
100 Megohms (each channel)
0 °C to 70 °C
-25 °C to 85 °C
Description