Omega Products iR2C User Manual

R2 Ultra-High Performance 2-Color Ratio
Fiber Optic Infrared Temperature
Measurement and Control System

iR2C, cast aluminum housing

iR2C

Complete

††

Optional

shown close to actual size.

U 300°C Up

to 3000°C
(572 to 5432°F)

U High Quality
U Ethernet and

RS232/485 Available

U Full Autotune PID Control
U Unique Built-In “Through-

the-Lens” Laser Sighting

U High Accuracy

IR probe, with 1 m (3')

cable, no extra charge.

U 2 Color or Single-Color Operation
U Fiber Optic Cable Assembly

is Field Replaceable

U Embedded Internet on All Models

iR2P, 1⁄8 DIN panel

mount, shown

iR2P

Complete

actual size.

Unique

“through-the-lens”

laser sighting.

†† Refer to Accessories chart on page J-92
for NIST calibration ordering information.

J-89

The OMEGA
instruments for difficult and demanding
high-temperature, 300 to 3000°C
(572 to 5432°F) applications. It is ideally suited
for measurement and control applications
involving metals, glass, semiconductors,
and more. The iR2 is extremely fast and
accurate with a response time of 10 ms
and accuracy of 0.2% FS. Despite its
extraordinary technological sophistication and
performance, the iR2 is also incredibly user
friendly and simple to configure. The iR2 is
designed to the highest-quality standards and
is backed by a 5-year warranty.

®

IR2 Series comprises state-of-the-art

80 (3.2)

2-Color Ratio Measurement

The iR2 measures temperature using a
2-color ratio technique in which a temperature
is computed from the ratio of 2 different
infrared frequencies, unlike a standard
infrared thermometer that measures the
absolute amount of infrared energy. The
2-color ratio technique is essential for accurate
measurements in many common applications:
when the target is obscured by smoke or steam,
when the target is viewed through a window or screen
that reduces energy, or when the emissivity of the target is
unknown or changes.

Unlike a standard infrared thermometer that determines an
average temperature for everything within its field of view, the
iR2 does not require that the target completely fill the lens field
of view as long as the temperature of the target is higher than
the background or material in the foreground.

This capability allows the iR2 lens to be installed farther
from the target, or outside a window or screen, as well as
to measure temperatures of small and moving targets more
accurately. The iR2 can also be switched to 1-color operation
if required.

Cast-Aluminum or Panel-Mount Enclosure

The iR2 is available in 2 practical packages. The iR2C model is
an extremely rugged cast-aluminum enclosure (with NEMA 4
rating) that can be mounted on any surface and is powered by
20 to 36 Vdc or 24 Vac. The iR2P model is a
package with a NEMA 4 front bezel for rack or cabinet mounting
with other instrumentation, and runs on 90 to 240 Vac or 110 to
375 Vdc power.

1

⁄8 DIN panel mount

Full PID Control

The iR2 is much more than an infrared transmitter. It is a
complete autotune PID temperature controller an extremely
compact enclosure (an important, unique feature). The iR2
features a totally programmable analog output that can be
programmed within a range of 0 to 10 Vdc or 0 to 20 mA.
The analog output is selectable as either a control output
or as a calibrated retransmission of the temperature. The
iR2 also offers a choice of 2 form "C" (SPDT) relays or solid
state relays for controlling or alarms. The control functions
feature the full suite of capabilities from simple on/off to
full proportional integral derivative (PID) control. Instead
of connecting a simple infrared transmitter to a separate
temperature controller, the iR2 can do it all.

Big, Bright Display

The iR2 features a big, bright LED dual display. The smaller
numbers display the setpoints or alarm points. The larger
numbers (a full 21 mm [0.83"] high) display the measured
temperature. The display can be programmed to change color
between GREEN, AMBER, and RED at any setpoint or alarm
point, and the change in color is quickly seen from a distance.

Dimensions: mm (inch)

149 (5.9)

136 (5.4)

iR2C, cast aluminum housing.

iR Probe, with

CO3 1 m (3') cable,

no extra charge.

J

Fiber Optics

The iR2 comes with a compact NEMA 4 lens
and a flexible fiber optic cable assembly. With the iR2, it’s
possible to measure the temperature of targets that would
simply not be visible with conventional instruments. The
fiber optic cable and lens allow the instrument electronics
to be kept away from the target environment where it would
be subjected to higher temperatures, smoke, dust, steam,
or powerful electromagnetic emissions such as those
generated by induction heating.

Both the stainless steel lens assembly and rugged cable
assembly can be replaced in the field without returning the
instrument for recalibration (a unique feature). The lens can
operate in ambient temperatures up to 200°C (392°F) without
external cooling. The variable-focus lens can focus on targets
from any distance between 200 mm (8") and more than 4 m
(14'). The 25:1 field of view is ideal for most applications.

OMEGA also offers a wide selection of compatible application­specific lens assemblies and fiber optic probes developed
during 3 decades of experience servicing the most demanding
infrared temperature applications.

Unique Built-In Laser Sight

The iR2 features a unique built-in “through-the-lens” laser that
shows the operator precisely what the lens is seeing (spot
size). This innovative laser illuminates the precise spot on
the target that the lens is viewing, and allows the operator to
focus on the target with absolute precision. The laser can be
turned on to sight the target and off to make a measurement
with the simple pushbutton on the front panel, or remotely
via network or serial communications. The cable and lens do
not have to be disconnected and connected to a separate
apparatus to provide a conventional or laser light for sighting.

J-90

Specifications

Accuracy: 0.2% FS
Repeatability: 0.2% FS
Temperature Resolution: 1°
Temperature Ranges:
Single Color: 300 to 1300°C

(572 to 2372°F)
Dual Color: 450 to 1300°C
(842 to 2372°F)

600 to 1800°C (1112 to 3272°F):

Single and dual color

1000 to 3000°C (1832 to 5432°F):
Single and dual color
Response Time: 10 ms

(0 to 63% of final value)

Spectral Response: 0.8 to 1.7 microns
Infrared Temperature Measurement:

Selectable between single color
and dual color
Emissivity: Adjustable

0.1 to 1.0 (single color )

Slope: 0.85 to 1.15 (two color)
Optical Field of View: 25 :1,

Adjustable focus from 200 mm to more
than 4 m distance (8" to 14'), std
Laser Beam Diameter:
2 mm (0.078") spot size @ 150 mm
(5.90") distance-L2MM, 3 mm (0.11")
spot size @ 225 mm (8.85")
distance-L3MM, smallest spot size, 8
mm (0.32"); minimal focus distance is
200 mm (8"), std
Dimensions (Optical Assembly):
20 x 62 mm (0.79 x 2.43")
maximum length
Fiber Optic Cable: 1 m included, 2, 3
and 10 m optional (3, 6, 10 and 32')
Power:
IR2P: 90 to 240 Vac or 110 to 375
Vdc
IR2C: 20 to 36 Vdc or 24 Vac

Display: 3-color dual display (AMBER,

GREEN and RED), programmable

Operating Temperature:

Controller: 0 to 50°C (32 to 122°F)
Optical Assembly: 0 to 200°C
(32 to 392°F), without cooling
required; higher ambient temperature
optical assemblies available

panel mount.

iR2C cast
aluminum

enclosure.

Environmental

L3

Rating:

NEMA 4 (IP65) (both
the optical assembly
and the front panel)

Serial
Communications:

RS232 and RS485/422
or Ethernet and

Available Probe Types
L1 Lens probe
L2 Ceramic/metal tip

RS485/422
Controller: On/off or
PID controller with autotune

Outputs: 2 control or alarm outputs
Output Type: Analog voltage

or current, relay, DC pulse

Analog Output Response: 1 second
Pulse Output Response: 1 second
Laser Sighting: Built into the controller

for optical assembly alignment

Wavelength (Color): 650 nm (red)

Visit omega.com/panelpunches
for standard DIN-size
panel punches.

IR INPUT

OUTPUT1 OUTPUT2

8

L N

LASER
LABEL
LOCATION

OUTPUT#

NO

NC

C

OUTPUT#

NO

C

iR2P 1⁄8 DIN

Shown smaller
than actual size.

L2

L1

L3 Polymer bolt
L4 Ejector pin probe

Operating Distance:

200 mm to 4 m (8" to 14')

Maximum Laser Power Output: <1 mW
Safety Classification: Class 2,

complies with FDA 21 CFR 1040.10,
CE EN60825-1/11.2001
Laser Power Switch: Set via the
controller menu
Laser Indicator:
Displays on the controller

COL

ON

TX

RX

1

1

RESET

1

8

ETHERNET

OUTPUT1

RTN

STATUS

CUR

iR2P

NC

C

SSR

OUTPUT#

NO

RELAY

OUTPUT#

V

RTN

NO

OPTION

OUTPUT#

PULSE RELAY ANALOG SSR

PUL

C

L4

PULSE

OUTPUT#

PUL

RTN

J-91

L N

1

8

IR INPUT

ETHERNET

STATUS

RESET

1

8

1

COL

ON

TX

RX

OPTION

OUTPUT1 OUTPUT2

OUTPUT#

NO

C

V

OUTPUT#

PULSE

PUL

RTN

OUTPUT1

CUR

RTN

OUTPUT#

PUL

RTN

OUTPUT#

NO

C

SSR

PULSE RELAY ANALOG SSR

OUTPUT#

NO

NC

C

RELAY

OUTPUT#

NO

NC

C

iR2P

149.35 (5.880)

135.88 (5.350)

55.44 (2.183)

92.00 + 0.81/-0.00

45.00 + 0.61/-0.00

(1.772 + 0.024/-0.00)

R 1.52 (R0.060)

4 PLCS

(3.622 + 0.032/-0.000)

PANEL CUTOUT

1/8 DIN

PANEL THICKNESS

6.4 (0.25) MAX

0.6 (0.03) MIN

iR2P

22.9 (0.90)

104.1 (4.10)

96.00

(3.780)

48.00

(1.890)

The iR2 can control a process
with simple on/off control
through full autotune PID
control, and everything in
between.The dual control
outputs can be configured for
a variety of independent control
and alarm applications such as
heat/heat, heat/cool, heat/alarm,
and more. The ramp-to-setpoint
feature allows the user to define
the rate of rise to setpoint,
minimizing thermal shock to
the load during start-up.

iR2C

1 OUTPUT#2 N.O.

7

3

5

2 OUTPUT#1 N.C.
3 DC (-) RETURN
4 OUTPUT#1 COM.
5 OUTPUT#1 N.O.
6 OUTPUT#2 N.C.
7 DC (+)
8 OUTPUT#2 COM.

80.39 (3.165)

69.85

(2.750)

IR INPUT

COMMUNICATION

POWER / OUTPUTS

6

8

1

4

2

Dimensions: mm (inch)

To Order

Model No.

iR2P

visit omega.com/ir2 for Pricing and Details

Description

1

⁄8 DIN panel mount enclosure (90 to 240 Vac or 110 to 375 Vdc)

iR2C Cast aluminum enclosure, 20 to 36 Vdc or 24 Vac

Range (Select One)

-300 300 to 1300°C (572 to 2372°F)

-600 600 to 1800°C (1112 to 3272°F)

-1000 1000 to 3000°C (1832 to 5432°F)

Output Options (Select One)

†

1 Programmable analog output selectable as either control or

retransmission of the process value, 0 to 10 Vdc or 4 to 20 mA

-53

plus form "C" SPDT relay 3 A @ 120 Vac, 3 A @ 240 Vac for
iR2P; 200 mA @ 30 Vdc for iR2C

-43

2 relays form "C" SPDT relay 3 A @ 120 Vac, 3 A @ 240 Vac

-33

for iR2P; 200 mA @ 30 Vdc for iR2C

Pulsed 10 Vdc @ 20 mA (for use with external SSR) and form "C" SPDT
3 A @ 120 Vac, 3 A @ 240 Vac for iR2P; 200 mA @30 Vdc for iR2C

Network Options (Select One)

-C24 Isolated RS232 and RS485/422, 300 to 19.2K baud (if required)

-C4EI Ethernet with embedded Web server and isolated RS485/422/MODBUS
Optical Assemblies (Select One)
Standard variable focal lengths; focal distance from lens to target

* variable between 200 mm to 4 m; spot size ratio 25:1
(8 mm spot size @ 200 mm distance) no entry required

-L2MM 2 mm spot size @ fixed focal length distance of 150 mm (75:1)

-L3MM 3 mm spot size @ fixed focal length distance of 225 mm (75:1)
High Ambient Temperature Option

-HT High ambient 0 to 300°C lens, cable assembly and 0.9 m (3')
fiber optic quartz cable (consult sales for longer lengths)

†

Other output combinations are available, consult engineering for details.

Ordering Example: iR2C-1000-53-C4EI, 2-color infrared temperature controller in a rugged cast
aluminum enclosure, with 8 mm spot size optic lens assembly, temperature range of 1000 to 3000°C
(1832 to 5432°F), programmable analog output, 1 SPDT form "C" relay, Ethernet, RS485/422/
MODBUS and iR2-06, 1.8 m (6') fiber optic cable [substitute for standard and 1 m (3') cable].

Accessories

Model No. Description
iR2-03* Replacement 1 m (3') fiber optic cable
iR2-06* 1.8 m (6') fiber optic cable
iR2-10* 3.0 m (10') fiber optic cable
iR2-30* 10 m (32.8') fiber optic cable
iR2-03Q** 1 m (3') fiber optic quartz cable
iR2-06Q** 1.8 m (6') fiber optic quartz cable
iR2-10Q** 3.0 m (10') fiber optic quartz cable
iR2-LENS Standard lens with 8 mm spot size @ fixed focal distance of

200 mm (25:1)

iR2-L2MM Lens with 2 mm spot size @ fixed focal distance of 150 mm (75:1)
iR2-L3MM Lens with 3 mm spot size @ fixed focal distance of 225 mm (75:1)
CAL3-iR2

Note: 1 m (3') fiber optic cable is standard length with controller unless different cable length is selected.
Comes complete with lens assembly and operator’s manual.

For -600 and -100 ranges only. ** For -300 range only.

*

††

NIST-traceable calibration with 5 data points

J

J-92