Evaulation_Engineering_March_2020 - 24

THERMAL TEST

Opto 22's
GRV-CCANI-2 and
GRV-ITM-12 modules for
its groov EPIC platform.

range of applications from sensor signal
logging to electrical power analysis. A
built-in power-analysis application measures and records voltage and current on
both single- and 3-phase networks. The
results are displayed as a harmonics
graph, Fresnal diagram, or oscilloscope
waveform.
Specifically for temperature measurement, B&K Precision offers Pt100 and
Pt1000 inputs as a factory option on
the DAS30 and DAS50 models and as
standard for the DAS60. An integrated
thermal printer is a factory option on all
three models.

Sensor signal transmitter
For transmitting a signal, OMEGA introduced its XW Series wireless sensor/
transmitter system, which provides seamless connectivity across the company's
catalog of sensors. The devices can serve
demanding industrial applications indoors and survive harsh outdoor environments. The electronics are protected
in a rugged weatherproof NEMA 4 (IP65)rated housing and are easy to set up using a standard USB cable in conjunction
with free SYNC configuration software. A
variety of compatible probes and sensors
mate quickly and easily with robust M12
connectors.
The XW series provides options for
compatibility with both digital and analog

EVALUATION ENGINEERING MARCH 2020

sensor types. The XW-ED accepts a variety of smart digital probes and accommodates pulse and process inputs. The
XW-EDA model supports a range
of thermocouples, RTDs, and
precision process inputs.
Pro versions feature two additional conf igurable
discrete
inputs/
outputs,
which enable
edge-control
capability. The
product can be
conf ig ured to
use local sensor
data to provide
closed-loop control
to local equipment, as well as sounding
alarms or monitoring door switches.
"I am pleased that we have created a
high-performance wireless platform that
supports more than 80% of Omega's sensor portfolio, including our extensive line
of thermocouples and RTDs," said Peter
Schwartz, senior product manager for
IIoT, in a press release. "These products
are ideal for both new sensor installations
and adding IIoT connectivity to existing
ones."

Programmable control
Finally, Opto 22 announced two additional modules for its groov EPIC edge
programmable industrial-controller
platform. For system integrators and
engineers, the new I/O modules provide
more options for bringing field bus networks into groov EPIC as well as meeting requirements for temperature-control
applications with high I/O count. GRVCCANI-2 (with serial communication,
two channels, CAN 2.0B, and channelto-channel isolation) is the first module
in the groov EPIC platform to provide
hardware support for an industrial field
bus, the company reported. This new
module enables existing CAN networks
to be brought into IIoT applications using groov EPIC's fluid IT/OT connectivity tools, like Ignition Edge, Node-RED,
and MQTT. groov EPIC also supports

integrating CAN data into control applications using IEC 61131-3 languages, and
it enables mobile visualization of CAN
data using groov View. Up to eight CAN
buses per processor at network speeds
up to 1 Mb/s are supported.
GRV-ITM-12 (analog input, 12 channels, and thermocouple or millivolt inputs) provides a high-density, low-cost
temperature-sensing option with two
isolated zones and six channels per zone.
Each channel is software-configurable
to one of seven millivolt ranges or eight
thermocouple types (B, E, J, K, N, R, S, T).
GRV-ITM-12 is accurate to 0.1% of the
configured range over 20-bit resolution
for V/mV sensing, with accuracy ranging from 2.0 to 5.0°C for thermocouple
sensing.
The new modules complement three
modules introduced in October, including
the 8-channel analog-input GRV-IRTD-8,
which increases options for accuracy and
I/O density in temperature applications,
the company reported. It provides eight
channels for 2- and 3-wire RTD inputs,
with a maximum range of -200°C to 850°C.
Users can take advantage of multiple
fixed ranges or one of two autoranging
methods to simplify configuration. The
GRV-IRTD-8 can also be used for highresolution resistance measurements, with
accuracy ranging from 4.2 Ω at the 8-kΩ
input range to 0.058 Ω at the 10-Ω range
for 3-wire RTDs.
REFERENCES

1. "Mercury Thermometer Alternatives,"
Physical Measurement Laboratory, NIST,
Updated December 10, 2019.
2. "Mercury Thermometer Alternatives:
Thermocouple," Physical Measurement
Laboratory, NIST, Updated December 10,
2019.
3. ASTM E230 / E230M - 17: Standard
Specification for Temperature-Electromotive
Force (emf) Tables for Standardized
Thermocouples, ASTM International, West
Conshohocken, PA, 2017.
4. "Mercury Thermometer Alternatives:
Platinum Resistance Thermometers (PRTs),"
Physical Measurement Laboratory, NIST,
Updated December 10, 2019.
5. "Temperature Sensor Basics," White Paper,
National Instruments, Updated March 14,
2019.
6. "Mercury Thermometer Alternatives:
Thermistor," Physical Measurement
Laboratory, NIST, Updated December 10,
2019.

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