(USA and Canada only)
3-wire RTD input
1000 ohm platinum @ 0 °C α= 0.00385
1000 ohm nickel @ 0 °C
1000 ohm nickel @ 70 °F
100 ohm platinum; α= 0.00385
100 ohm nickel, -60 to 250 °C
120 ohm nickel, -80 to 260 °C
10 ohm copper; α= 0.00428
Input Temperature Range
-200 °C to 850 °C
(-328° to +1,582° F)
-180 °C to 260 °C
(-292° to +500° F)
0 to 4000 ohms
0 to 400 ohms
0 to 25 ohms
to 4400 ohms
to 440 ohms
to 27.5 ohms
0.042 °C (0.16 ohms)
0.042 °C (0.016 ohms)
0.026 °C (0.001 ohms)
-3 dB @ 0.1 Hz
-3 dB @ 100 Hz
Data Freshness (Max)
Automatic when used with SNAP brains
Automatic when used with SNAP PAC brains
DC Common Mode Rejection
AC Common Mode Rejection
>-120 dB at 60 Hz
0.256 mA constant current
1.25 mA constant current
5.4 mA constant current
Maximum Lead Resistance
40 ohms single wire (all leads to be equal resistance)
15 ohms single wire (all leads to be equal resistance)
Maximum Fault Voltage at Input
(between any 2 field wires)
Maximum Operating Common Mode Voltage
After setting gain and offset
5.00 to 5.20 VDC @ 190 mA
-20 °C to 70 °C
-40 °C to 85 °C
22 to 14 AWG
Torque, hold-down screws
Not to exceed 1 in-lb (0.11 N-m)
Torque, connector screws
5.22 in-lb (0.59 N-m)
CE, RoHS, DFARS; UKCA
UL, FM, CE, RoHS, DFARS; UKCA
This document lists and describes all current Opto 22 SNAP PAC System part numbers, including PAC Project software, SNAP PAC controllers, and SNAP I/O modules of all kinds. SNAP PAC mounting racks and SNAP power supplies are also listed.
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 the following analog input modules:
This document is the Manufacturer's Declaration of Conformity for the products listed herein, in accordance with the rules, regulations and standards of the United Kingdom. The models cited have been tested to the essential requirements listed in the Standards section, and fully comply with the legislation as listed in UK Legislation section.
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.
The SNAP-AIRTD-1K is a two-channel,isolated analog input module for use with 1000 ohm platinum resistance temperature detectors (RTDs). With the SNAP-AIRTD-1K, Opto 22’s line of SNAP I/O modules now includes RTD input modules for use with 10 ohm copper, 100 ohm platinum, and 1000 ohm platinum RTD probes.
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.
This primer describes various temperature sensors such as RTDs, thermocouples, ICTDs, thermistors, and infrared sensors, and the Opto 22 solutions for using them.
This document is a statement of compliance with the EU Directive 2015/863/EU, Restriction of Hazardous Substances (RoHS 3). This document lists Opto 22 products that comply with the substance restrictions of the RoHS 3 directive.
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.
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.
A quick overview on securing a SNAP Module to a SNAP rack.
A quick overview on removing a SNAP module.
A quick overview on I/O Solutions for temperature monitoring.
What's the difference between accuracy and resolution in analog I/O specifications? Try your own specs in the calculator.