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$675.00 (USA and Canada only)

Availability: In stock

Analog input, temperature/thermistor or resistance, 12 channels

Production Specification

The GRV-ITR-12 module is part of the groov EPIC® system. This module has 12 channels of analog to digital conversion that convert resistance to temperature or to Ohms.

The module is ideal for NTC thermistors commonly used in HVAC, refrigeration, and process control applications. It may also be used with PTC thermistors in resistance sensing applications. The module has 12 channels of analog to digital conversion that convert resistance to temperature or to Ohms. The module reads variable resistance type transducers, with input ranges from 500 Ohms to 400 K Ohms, plus Autorange. You can also select from predefined curves for popular thermistors, as well as create custom curves. The module also offers  options to decrease data refresh time and step input response time.

The GRV-ITR-12 module mounts on a groov EPIC® chassis with a GRV-EPIC-PR1 processor and assorted discrete, analog, and serial groov I/O modules.

Features GRV-IRTD-8 GRV-ITR-12
Scaling x x
Offset and Gain x x
Minimum/Maximum Values x x
Average Filter Weight x x
Simple Moving Average (SMA) x x
Analog Totalizing x x
Problem indication x x
Specification GRV-ITR-12
Input Ranges (Ohms) 400 k, 200 k, 100 k, 50 k, 40 k, 20 k, 10 k, 5 k, 4 k, 2 k, 1 k, 500 and Autorange
Accuracy, normal mode (Ohms @ Range) 0.1%; specific values for indicated range:
400@400 k, 200@200 k, 100@100 k, 50@50 k, 40@40 k, 20@20 k, 10@10 k, 5@5 k, 4@4 k, 2@2 k, 1@1 k, 0.5@500
Accuracy, fast ADC mode (Ohms @ Range) 0.5%; specific values for indicated range:
2000@400 k, 1000@200 k, 500@100 k, 250@50 k, 200@40 k, 100@20 k, 50@10 k, 25@5 k, 20@4 k, 10@2 k, 5@1 k, 2.5@500
Excitation Current (Range & Load Watts Dissipated) >7.9 µA (400 K & 25 µW), (200 K & 12.4 µW), (100 K & 6.2 µW), (50 K & 3.1 µW),
>84.7 µA (40 K & 287 µW), (20 K & 144 µW), (10 K & 72 µW), (5 K & 36 µW),
>169.2 µA (4 K & 115 µW), (2 K & 57 µW), (1 K & 29 µW), (500 & 14 µW)
Analog Data Filtering -3 dB @ 2.4 Hz
-25 dB @ 60 Hz
Software Filtering: Simple Moving Average 1 to 32 readings
Software Filtering: Weighted Average 1 to 4096
Data Refresh Time (normal mode) 900 ms
Data Refresh Time (fast ADC mode) 450 ms
Step Input Response Time (normal mode) 900 ms x SMA value (for example, 28.8 s @ 32 SMA, Default SMA = 4)
Step Input Response Time (fast ADC mode) 450 ms x SMA value (for example, 14.4 s @ 32 SMA, Default SMA = 4)
Problem Indication out of range
Isolation (field-to-logic) 300 V working, 1500 V transient (1 minute)
Isolation (channel-to-channel) 300 V between channel group 0–5 & channel group 6–11. None within a group.
Number of Channels 12
Chassis Power Consumption 1.3 W
Minimum groov EPIC Firmware Version 1.3.0
Minimum PAC Project Version 10.2000
Minimum Library Package for CODESYS Version
Wire Size 28–14 AWG
Torque, connector screw 2.5 in-lb (0.28 N-m)
Torque, hold-down screw 3.5 in-lb (0.4 N-m)
Temperature (operating) -20 °C to +70 °C
Temperature (storage) -40 °C to +85 °C
Humidity (non-condensing) 5–95% RH
Agency Approvals UL/cUL(Class 1 Div. 2), CE, ATEX(Category 3, Zone 2), RoHS, DFARS; UKCA
Warranty Lifetime

groov Thermistor Resistor Input Modules Data Sheet

groov analog input modules are part of Opto 22's groov EPIC® System. This document includes descriptions, specifications, and wiring and dimensional diagrams for groov thermistor/resistor analog input modules, part numbers GRV-IRTD-8 and GRV-ITR-12.

groov I/O Modules Firmware Release Notes

This document lists the latest updates to the firmware for groov I/O modules. It includes information on new features, enhancements, and bug fixes.

List of groov I/O module firmware download pages

Note: This document was formerly called a readme. The name was changed to more accurately describe its content.

UKCA Declaration of Conformity (groov EPIC and groov RIO)

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.

ATEX Letter of Conformity for groov EPIC

This ATEX Letter of Conformity is provided to support CE Declaration of Conformity (groov EPIC and groov RIO), form 2261.

Declaration of Conformity (groov EPIC and groov RIO)

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.

GRV-ITR-12 Module Firmware

This download contains current firmware for the GRV-ITR-12 module. For a list of bug fixes and enhancements included in this firmware, see the groov I/O Modules Firmware Release Notes.

You can obtain previous versions of the firmware by clicking on the corresponding link: 1.4d1.4c1.4a1.3d1.3c1.3a

CAD Drawing: groov I/O Module

This ZIP file includes drawings in a variety of file formats (pdf, dwg, stp) that apply to all groov I/O modules.

Note: These drawings do not apply to groov RIO modules.

CAD Drawings: groov EPIC and groov RIO I/O wiring

This ZIP file contains I/O wiring diagrams for groov EPIC I/O modules and groov RIO models, in DWG format.

No videos or demos are available for this product.