SNAP-AITM-8

Availability: In stock
SNAP 8-Ch Type B, C, D, E, G, J, K, N, R, S, or T Thermocouple or +/-75, +/-50, or +/-25 mV Analog Input Module

Please call (800) 321-6786 to order.

SNAP-AITM-8

Production Specification

The SNAP-AITM-8 provides eight channels of thermocouple or millivolt input. Each channel can be individually configured to accept a type B, C, D, E, G, J, K, N, R, S, or T thermocouple or a -75 to + 75 mV, -50 to +50 mV, or -25 to +25 mV input.

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 Logix PLC system, such as ControlLogix, MicroLogix, or CompactLogix.

Used with an Opto 22 SNAP PAC controller, the SNAP-AITM-8 module is ideal for customers with applications requiring high-resolution temperature monitoring, data acquisition, and control of autoclaves, industrial ovens, pasteurizers, heat exchangers, and other equipment that requires precise thermal regulation. The high density of points on the module reduces panel space for applications using a high number of thermocouple inputs, such as semiconductor, food, petrochemical, and pharmaceutical processing.

Compatibility: The SNAP-AITM-8 works with SNAP PAC brains and R-series controllers only. Like all SNAP analog input modules, the SNAP-AITM-8 provides transformer isolation to reduce noise and installation problems, and 4000 volts optical isolation (4000 volts of transient protection for 1 ms) from other modules on the same mounting rack.

The SNAP-AITM-8 is UL and CE approved. If you need Factory Mutual approval, see the SNAP-AITM-8-FM instead.

NOTE: This module does not provide channel-to-channel isolation. If you need an isolated module, see the 4-channel SNAP-AITM-4i.
Build your system in the SNAP I/O Configurator.

Input Range

From -75 mV to +75 mV
From -50 mV to +50 mV
From -25 mV to +25 mV

Over-Range Limits

From -82.5 to +82.5 mV (+/-75 mV range)
From -55 to +55 mV (+/-50 mV range)
From -27.5 to +27.5 mV (+/-25 mV range)

Resolution

3 microvolts from -75 mV to +75 mV
2 microvolts from -50 mV to +50 mV
1 microvolts from -25 mV to +25 mV

Cold Junction Temperature Compensation

Automatic when used with SNAP I/O
processors

Input Filtering

-3 dB @ 5 Hz

Data Freshness (Max)

2.25 s

DC Common Mode
Rejection

>-120 dB

AC Common Mode
Rejection

>-120 dB @ 60 Hz

Maximum Survivable Input

±15 volts

Max Operating Common Mode Voltage

250 V

Accuracy at Full Scale

0.1% (75 microvolts) @ 75 mV
0.1% (50 microvolts) @ 50 mV
0.2% (50 microvolts) @ 25 mV

Drift: Gain Temperature
Coefficient

5 microvolts / °C

Drift: Offset Temperature Coefficient

2 microvolts / °C

Thermocouple Accuracy [°C]

E, J, K

B, R, S

C, D, G

T, N

  From factory

±2.0

±5

±4

±3

  After user gain and offset commands

±0.5

±3

±2

±2

Isolation

1500 V

Power Requirements

5 VDC (±0.15) @ 200 mA

Input Resistance

100 Megohms (each channel)

Ambient Temperature:
  Operating
  Storage

 

-20 °C to 70 °C
-40 °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

SNAP-AITM-8: UL, CE, RoHS, DFARS

SNAP-AITM-8-FM: FM, CE, RoHS, DFARS

Warranty

Lifetime

SNAP PAC System Product Guide

This document lists and describes all Opto 22 SNAP PAC System part numbers, including PAC Project software, SNAP PAC controllers, SNAP PAC brains, and SNAP I/O modules of all kinds. SNAP PAC mounting racks and SNAP power supplies are also listed.

SNAP Analog Input Modules Data Sheet

SNAP I/O analog input modules are part of Opto 22's SNAP PAC System. This document includes descriptions, specifications, and wiring and dimensional diagrams for most analog input modules.

For analog modules with channel-to-channel isolation, see form #1182.

Declaration of Conformity (EMC, LVD, RoHS)

This document is the Manufacturer's Declaration of Conformity for the products listed herein, in accordance with European, international, and/or national standards and regulations.

Case Study: University of California, Irvine

At the University of California, Irvine, Scientist Dr. John Garman and a team of his engineering students use an Opto 22 SNAP PAC System in their research of coal and biomass combustion. The SNAP PAC hardware controls the coal feed rate into an entrained flow reactor, monitors thermocouples that feed back process control data, monitors emissions, and acquires and logs data on operating conditions within the reactor.

I/O Solutions for Temperature Monitoring (Chinese)

This document is written in Chinese.

This white paper describes various temperature sensors such as RTDs, thermocouples, ICTDs, thermistors, and infrared sensors, and the Opto 22 solutions for using them.

Primer: I/O Solutions for Temperature Monitoring

This primer describes various temperature sensors such as RTDs, thermocouples, ICTDs, thermistors, and infrared sensors, and the Opto 22 solutions for using them.

Opto 22 RoHS 2 Statement of Compliance - Restriction of Hazardous Substances

This document is a statement of compliance with the EU Directive 2011/65/EU, Restriction of Hazardous Substances (RoHS 2). This document lists Opto 22 products that comply with the substance restrictions of the RoHS2 directive.

UL Approval Document

This document lists all Opto 22 part numbers that have the Underwriters Laboratory (UL) approval.

CE Declaration: Component

This document is the Manufacturer's Declaration for the listed products as mentioned in the attachment - to which this confirmation refers - that they are in accordance with the mentioned European, international and/or national standards and regulations.

CE Declaration: EMC

This document is the Manufacturer's Declaration for the listed products as mentioned in the attachment - to which this confirmation refers - that they are in accordance with the mentioned European, international and/or national standards and regulations.

CE Declaration: Low Voltage

This document is the Manufacturer's Declaration for the listed products as mentioned in the attachment - to which this confirmation refers - that they are in accordance with the mentioned European, international and/or national standards and regulations.

CAD 3D Drawing: SNAP-AITM-8 Analog Input Module

This CAD file contains a 3-dimensional drawing of the SNAP-AITM-8 analog input module, which provides eight channels of thermocouple or millivolt input. This drawing also applies to the SNAP-AITM-8-FM, which is Factory Mutual approved.

CAD Drawing: SNAP-AITM-8 Analog Input Module

This CAD file includes drawings for the SNAP-AITM-8 analog input module. This module offers eight channels of thermocouple or millivolt input. Each channel can be individually configured to accept a type B, C, D, E, G, J, K, N, R, S, or T thermocouple or a -75 to + 75 mV, -50 to +50 mV, or -25 to +25 mV input.

Video: SNAP PAC System Overview

This overview describes the four integrated components of the SNAP PAC system: software, controllers, brains and I/O. This hardware and software system is designed for industrial control, remote monitoring and data acquisition.

Video: Securing SNAP Module

A quick overview on securing a SNAP Module to a SNAP rack.

Video: Removing a SNAP Module

A quick overview on removing a SNAP module.

Video: I/O Solutions for Temperature Monitoring

A quick overview on I/O Solutions for temperature monitoring.

Demo: Accuracy vs Resolution

What's the difference between accuracy and resolution in analog I/O specifications? Try your own specs in the calculator.