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Analog input module GRV-ITMI-8
8-channel8 analog inputsEPIC

Analog input module - GRV-ITMI-8 - Opto 22 - 8-channel / 8 analog inputs / EPIC
Analog input module - GRV-ITMI-8 - Opto 22 - 8-channel / 8 analog inputs / EPIC
Analog input module - GRV-ITMI-8 - Opto 22 - 8-channel / 8 analog inputs / EPIC - image - 2
Analog input module - GRV-ITMI-8 - Opto 22 - 8-channel / 8 analog inputs / EPIC - image - 3
Analog input module - GRV-ITMI-8 - Opto 22 - 8-channel / 8 analog inputs / EPIC - image - 4
Analog input module - GRV-ITMI-8 - Opto 22 - 8-channel / 8 analog inputs / EPIC - image - 5
Analog input module - GRV-ITMI-8 - Opto 22 - 8-channel / 8 analog inputs / EPIC - image - 6
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Characteristics

Signal type
analog
Number of inputs/outputs
8-channel, 8 analog inputs
Bus standard
EPIC
Applications
voltage, for thermocouples, for temperature measurement
Other characteristics
configurable

Description

Overview

  • The GRV-ITMI-8 is an analog input module for the groov EPIC system that accepts thermocouple or millivolt (mV) signals and provides channel-to-channel isolation for high-accuracy measurements in industrial control and monitoring applications.


Key features

  • 8 independent, individually configurable input channels for thermocouples (ITS90 types B, E, J, K, N, R, S, T) or selectable mV ranges.
  • Channel-to-channel isolation (channels do not share common connections), enabling use with grounded sensors and reducing interference.
  • Selectable mV ranges: ±1200 mV, ±600 mV, ±300 mV, ±150 mV, ±75 mV, ±50 mV, ±25 mV.
  • On-module status LED and touch-sensitive pad that displays module information and wiring diagram on the groov EPIC processor.
  • Agency approvals: UL/cUL, ATEX, Low Voltage, EMC CE and UKCA; factory-tested with lifetime warranty for most modules.


Technical specifications

  • Number of channels: 8
  • Input types: Thermocouple (B, E, J, K, N, R, S, T) or millivolt (mV)
  • Millivolt input ranges: ±1200.0 mV, ±600.0 mV, ±300.0 mV, ±150.0 mV, ±75.0 mV, ±50.0 mV, ±25.0 mV
  • Over-range limits (±10%): ±1320.0 mV, ±660.0 mV, ±330.0 mV, ±165.0 mV, ±82.5 mV, ±55.0 mV, ±27.5 mV
  • Resolution: mV range / 1,048,576 (20 bits)
  • Accuracy (mV ranges): 0.1% of range (examples: ±1200 µV, ±600 µV, ±300 µV, ±150 µV, ±75 µV, ±50 µV, ±50 µV)
  • Thermocouple accuracies (default / user-calibrated / resolution): B: 5.0 °C / 3.0 °C @250 °C / 0.05 °C; E: 2.0 °C / 0.5 °C @0 °C / 0.05 °C; J: 2.0 °C / 0.5 °C @0 °C / 0.05 °C; K: 2.0 °C / 0.5 °C @0 °C / 0.05 °C; N: 3.0 °C / 0.8 °C @0 °C / 0.05 °C; R: 5.0 °C / 2.5 °C @250 °C / 0.05 °C; S: 5.0 °C / 3.0 °C @250 °C / 0.05 °C; T: 3.0 °C / 0.5 °C @0 °C / 0.05 °C
  • Cold-junction compensation: Automatic
  • Analog hardware filtering: -3 dB @ 14 Hz; -25 dB @ 60 Hz
  • Software filtering: Simple Moving Average (SMA) and Weighted Average; SMA window configurable (1–32 readings or extended settings)
  • Data refresh time: mV ranges = 100 ms; T/C ranges = 200 ms
  • Step response time: 16.5 ms × SMA value (e.g., 0.53 s @ 32 SMA; default SMA = 8)
  • Common mode rejection: > -120 dB
  • Input resistance: 100 MΩ
  • Quality indications: out-of-range, open thermocouple
  • Isolation (field-to-logic): 300 V working, 1500 V transient (1 minute)
  • Isolation (channel-to-channel): 300 V working, 1500 V transient (1 minute)
  • Chassis power consumption: 1.4 W
  • Operating temperature: -20 °C to +70 °C; Storage: -40 °C to +85 °C; Relative humidity (non-condensing): 5–95%
  • Wire size: 28–14 AWG; Wire strip length: 8–9 mm; Connector screw torque: 2.5 in-lb (0.28 N·m); Hold-down screw torque: 3.5 in-lb (0.4 N·m)
  • MTBF (25 °C): 1.2 Mhrs


Compliance & compatibility

  • Minimum groov EPIC firmware: 1.0.0
  • Minimum PAC Project version: 10.0000
  • Minimum CODESYS library package: 1.0.0.0
  • Agency approvals: UL/cUL (Class 1, Div 2), CE (ATEX Category 3, Zone 2), RoHS, DFARS, CB Scheme, UKCA
  • Warranty: Lifetime for most modules; module is factory-tested before shipment

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.