OPTO 22 - GRV-IRTD-8 _ Analog input, 8 channels, temperature/RTD or resistor
- Brand
- OPTO 22
- SKU:
- GRV-IRTD-8
OPTO 22 - GRV-IRTD-8 _ Analog input, 8 channels, temperature/RTD or resistor
Quick Specs:
- Analog input
- 8 channels
- temperature/RTD or resistor
This module is commonly used for 3-wire RTD temperature inputs but is also suited to high-resolution resistance measurements. You can individually configure each of the module's 8 channels for a
fixed range in ohms or choose from two methods of auto-ranging:
- Full Auto-rangeThe module scrolls up and down the entire set of ranges and dynamically chooses the appropriate range for best resolution. Note that this channel type can result in higher latency when ranging up; the data returned is resistance in ohms.
- Auto-range DownThe module scrolls down and up within the specified range limit. If the value goes above the specified range, the module issues an out-of-range value (16-bit). These channel types allow auto-ranging within the selected range but limit the data latency when ranging up. The data returned is resistance in ohms.
The GRV-IRTD-8 module mounts on a groov EPIC® chassis with a GRV-EPIC-PR1 processor and assorted discrete, analog, and serial groov I/O modules.
Specifications:
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-IRTD-8 | |||
---|---|---|---|---|
Input Ranges (Ohms) | 8.0 K, 4.0 K, 2.0 K, 1.0 K, | |||
Accuracy (Ohms @ Range) | 4.2@8 K, 2.6@4 K, 1.8@2 K, 1.4@1 K, | |||
Excitation RMS Current | >301 µA (8 K & 363 µW), (4 K & 182 µW), (2 K & 91 µW), (1 K & 46 µW), | |||
Data Refresh Time | 600 ms | |||
Analog Data Filtering | -3 dB @ 23.5 Hz / -18 dB @ 60 Hz | |||
Software Filtering: Simple Moving Average (SMA) | 1 to 32 readings | |||
Software Filtering: Weighted Average | 1 to 4096 | |||
Step Input Response Time | 600 ms x SMA value (19.2 s @ 32 SMA, Default SMA = 4) | |||
Total Lead Resistance1 | 200 Ohms Max | |||
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 0-3 & group 4-7. None within a group. | |||
Number of Channels | 8 | |||
Chassis Power Consumption | 1.3 W | |||
Minimum GRV-EPIC-PR1 Firmware Version | 1.4.2 | |||
Minimum PAC Project Version | 10.2003 | |||
Minimum Library Package for CODESYS Version | 1.0.2.0 | |||
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)a, CE, ATEX (Category 3, Zone 2), RoHS, DFARS; UKCA | |||
Warranty | Lifetime | |||
a For use in hazardous locations, equipment must be mounted in an enclosure that meets the requirements of the National Electrical Code, ANSI/NFPA 70, and ANSI/ISA-61010-1 (82.02.01). |
1. The sum of the resistance in both lead wires cannot exceed this value. For example: a 24 AWG wire would need to be longer than 4,000 feet (or 1.2 kilometers), in each lead, to exceed 200 Ohms.