Omega Products iDRN-PR User Manual

Analog & Digital Output Signal Conditioners/Transmitters

iDRN/iDRX Series

U Analog or Digital Output
U Models Available for:

Thermocouple, RTD,
Process Voltage & Current,
Strain, Frequency/Pulse,
AC Voltage and Current

U Up to 1800 Vdc Isolation
U iDRN Series Provide

0 to 10 Vdc, 4 to 20 mA
or 0 to 20 mA Output

U iDRX Series Provide RS‑485

Output (ASCII Serial Protocol
and MODBUS Serial Protocol)

U Free Setup and Configuration

Software

U Factory Setup and

Configuration Available
at No Charge (for iDRN
Analog Output Models)

The new iD Series signal conditioners
combine the accuracy of laboratory
instrumentation with the performance
required by demanding industrial
applications. The iD Series signal
conditioners are ideal for those
applications in Data Acquisition,
Test & Measurement, Process
Control, and Industrial Automation
where accuracy, performance, and
reliability are critically important.

The iD Series signal conditioners
mount on a 35mm DIN rail, and
operate on any voltage between
10 to 32 DC power. (A matching 24 Vdc
850 mA switching power supply is
also available.) The devices feature
three-way isolation of up to 1800 Vdc
between the signal inputs, outputs,
and power supply.

The iD series feature seven (7)
models designed for each of the
most widely measured signal inputs:
Process (DC) Voltage and Current;
Strain Gage; Thermocouples;
RTD’s; AC Voltage; AC Current;
Frequency/Pulse.

The iD series devices are designed
to work directly with a variety of
sensors and transducers; no other
components are necessary. For
sensors such as RTD’s, strain gages,
and some process transducers,
precise stable excitation is provided
directly from the iD module.

The iD series are available with
two different types of signal
outputs: Analog or Digital. The
iDRN series provides a totally
scalable analog output in DC
voltage or current. The iDRX series
provide a digital RS-485 output.
Both iD Series signal conditioners
are intelligent microprocessor based
instruments that can be scaled
and programmed by computer via
serial communications, or over an
Ethernet network.

iDRN Series Analog Output

The iDRN series feature a 0 to 10 Vdc,
or 0 to 20 mA (including 4 to 20 mA)
analog output signal that is typically
scaled to be directly proportional
to the input signal. It is an ideal
component in a system with
PLC’s or PC’s with analog data
acquisition boards.

The iDRN series are an excellent
choice for applications that demand
an extra measure of accuracy and
performance that is not possible
with conventional “analog” signal
conditioners or transmitters. Unlike
conventional analog devices that
are scaled by adjusting zero and
span “pots”, the programmable,
micro-processor based iDRN
instruments are scaled precisely on
a PC with free and simple Windows
software. The iDRN modules
connect directly to a PC’s RS-232
Serial Communications port for
programming and scaling.

Once the module is configured,
the parameters are saved in non­volatile memory. The device can
be disconnected from the PC, or
the RS-232 output from the module
can be used for continuous data
acquisition in addition to the
analog output.

Alternatively, the iDRN signal
conditioner can be connected to a
PC’s Ethernet port or an Ethernet
network using the EIT module as a
Serial/Ethernet bridge.

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Free Setup and Configuration

If an iDRN signal conditioner is not
going to be connected to a computer,
it can be ordered preconfigured by
the factory at no extra charge. The
user can select the input types,
ranges and output scale, and
OMEGA will program the instruments
to those specific requirements in our
calibration lab prior to shipment. For
custom factory setup and scaling of
the iDRN model, please specify the
“-FS” option.

iDRX Series Digital Output

The iDRX Series Signal Conditioners
provide highly accurate digital outputs.
Each module provides an RS-485
Serial output that can be transmitted
directly to computers and other
devices with serial communications
capability, or converted to Ethernet.

On an RS-485 bus, up to 32 modules
can be connected over a distance
of 1200 m (4000') on a single pair
of wires. With optional RS-485
repeaters, up to 254 modules may be
connected to a single RS-485 port.
The iDRX Series digital conditioners
may be connected to an RS-485
bus using either screw terminator or
RJ-12 connector.

ASCII and MODBUS

The user can select between an
easy-to-use, straightforward ASCII
protocol, or the popular MODBUS
protocol found in many existing
industrial installations. With the
simple ASCII commands, writing
programs using the iDRX does not
require special drivers or libraries. In
addition, many off-the-shelf software
packages can be used with the iDRX
devices without any programming.
OMEGA also provides a number of
useful programs and demos for the
iDRX at no charge.

OPC Server
And Active X
Controls

OMEGA offers an optional
OPC Server (OLE for
Process Control) and
ActiveX Controls for
the iDRX Series. These
programs make it easy to
integrate the iDRX devices
with information systems
using “ActiveX Containers”
such as Microsoft Visual Basic
and Microsoft Excel as well as with
popular OLE and OPC compliant
data acquisition, process control,
and industrial automation software
from OMEGA®, Iconics,
Wonderware, Intellution,
Rockwell Automation, and
GE Fanuc Cimplicity among others.

iDRX and iDRN Series
Common Specifications

Input Power Supply: 10 to 32 Vdc
iDRX Output: 2-wire (half duplex)

RS-485 (OMEGA® Serial Protocol
and Modbus Serial Protocol)

iDRN Output: 0 to 10V @ 10 mA max;
0 to 20 mA or 4 to 20 mA,
10V compliance

Isolation: 1800 Vdc peak
Typical Step Response to 99%:

1 second

Operating Ambient:

-5 to 55°C (23 to 131°F)

Storage Temperature Range:

-40 to 85°C (-40 to 185°F)

Mounting: 35 mm DIN rail
Dimensions: 90 H x 25 W x 107 mm D

(3.54 x 0.99 x 4.21")

Mounts to

35 mm

DIN rails.

RAIL‑35‑2,
2 m (6') long.

Input Thermocouple RTD ac Voltage ac Current Process Strain/Bridge Frequency Pulse
Model No. iDRN/iDRX-TC iDRN/iDRX-RTD iDRN/iDRX-ACV iDRN/iDRX-ACC iDRN/iDRX-PR iDRN/iDRX-ST iDRN/iDRX-FP

Input Type Thermocouple RTD Temperature ac Voltage ac Current dc Millivolt, Millivolt NAMUR

temperature sensor Volt Contact closure
sensor Pt100, 500, 1000Ω and Current low level
open collector

Input Range J, K, T, E, α = 385, 392 Full Scale Range: Full Scale Range: Full Scale Range: 0 to 30 mV Full Scale Range
R, S, B, N, J DIN Full range of RTD 400 mV to 400V 10 mA to 5 A ±400 mV to ±10V 0 to 100 mV 20k to 0 to
thermocouple full range 2, 3 or 4-wire 0 to 20 mA ±100 mV 200 M pulses 50 kHz

Accuracy ±1°C ±0.5°C 0.2% 0.2% 0.1% FS 0.2% FS 0.1% FS
Resolution 0.1°C 0.1°C 10 to 14 Bit 10 to 14 Bit 12 to 15 Bit 13 to 15 Bit 15 to 19 Bit
Output iDRX Series: 2-wire (half duplex) RS-485/iDRN Series: 0 to 10V @ 10 mA max; 0 to 20 mA or 4 to 20 mA
Excitation N/A N/A N/A N/A 14 Vdc @ 10V @ 5, 8.2 and 12.5 Vdc

25 mA 30 mA @ 25 mA

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A/IN

SERIAL I/O

DI/O

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information
Anytime,
Anywhere,
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Wide Web.

Ethernet and Internet

The iDRX signal conditioner can
also be connected to an Ethernet
network using the EIT module
as a Serial/Ethernet bridge. One
EIT module can be a hub for up
to 32 iDRX modules. The EIT
module packages the ASCII serial
communications in standard
TCP/IP Protocol for transmission
over standard Ethernet networks
and the Internet. Unlike some
manufacturer’s products this
system uses totally open, non­proprietary standards and protocols
for Ethernet and Internet. The
user can integrate these devices
with any commercial or industrial
grade networking components
that also comply with the popular
international standards.

Get Internet E‑mail Notification of
Alarm Status on your web enabled
smartphone or blackberry.

Digital Output iDRX modules connected to Ethernet

iDRX modules on RS485 Serial Bus

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