
J-81
⻬ Accuracy ±1% of Reading
⻬ Models with Temperature
Ranges Measuring Up to
1370°C (2500°F)
⻬ Current, Voltage,
or Millivolt Output
⻬ Laser Sight Optional
⻬ °C/°F Keypad Selectable
⻬ Local Backlit LCD
Display Standard
⻬ Dual Display Indicates
Current plus Min, Max,
Average, or Differential
Temperatures on Most Models
⻬ Visual and Audible High
Alarm Low Alarm
(OS552, OS553, OS554)
⻬ Emissivity Adjustable from
0.1 to 1.00 in 0.01 Steps via
the Programmable Keypad
⻬ Fast 250 msec Response Time
⻬ Complete NEMA 4
(IP66) System
⻬ RS232 Communication
Available
OMEGA’s OS550 Series industrial,
high-performance, economical
thermometer/transmitter offers a
wide choice of temperature ranges,
optical patterns, or fields of view
and 3 outputs (1 mV/degree,
4 to 20 mA, and 0 to 5 Vdc) to
feed directly into panel meters,
recorders, temperature/process
controllers, data loggers, data
acquisition systems, or other
process instrumentation.
Since the OS550 Series infrared
thermometers do not use chopper
motors or vibrator mechanisms,
they can be mounted in any position
and in hostile environments without
suffering any loss in performance.
This rugged design coupled with
relatively small dimensions makes
these sensors ideally suited for a
wide variety of applications.
OS550 Series
Starts at
$
495
Specifications
Accuracy: ±1% of reading @ 25°C
ambient or 1.7°C (3°F), whichever
is greater
Repeatability: ±1% rdg ±1 digit
Spectral Response: 8 to 14 microns
Emissivity Range: 0.10 to 1.00
Field of View (FOV): See diagrams
Display: Backlit LCD
Transmitter Outputs:
1 mV/degree, 0
to 5 Vdc or 4 to 20 mA
Power: 7 to 24 Vdc @ 80 mA
Environmental Ratings: NEMA 4
(IP65) water-tight and dust-tight for
sensing head and electronics enclosure
Ambient Operating Range:
Sensing head 0 to 50°C (32 to 122°F)
with OS550-WC; 0 to 85°C
(32 to 185°F)
Response Time: 250 msec; 0 to 63.2%
Alarms: Visual and audible
RS232: Standard on OS552, OS553 and
OS554 models; one-way communication;
PC compatible software included
Connection: 4.5 m (15'), head and
power cable included
Dimensions:
Sensing Head: 10.9 x 4.1 cm
(4.30 x 1.63"), 1
1
⁄2 to 20 thread
Electronics: 13.3 x 9.1 cm
(5.25 x 3.62")
Weight:
Sensing Head: 0.45 kg (12 oz)
Electronics Mounted in NEMA 4
(IP65)
Enclosure: 1.2 kg (43.2 oz)
OS550 sensor head
(included) shown
With optional
mounting bracket
and mounting nut.
OS550-WC
air/water cooling
jacket, $195.
OS550-AP
air purge collar, $65.
OS550-MF
mounting
frame, $65.
Available
Accessories
OS550, $495,
shown smaller
than actual size.
OS550-MN
mounting nut, $15.
OS550-MB
mounting
bracket, $35.
Industrial Non-Contact Infrared
Thermometer/Transmitter
with Local Display and
Analog Output
LASER RADIATION - DO NOT STARE INTO BEAM
LASER RADIATION DO NOT STARE
INTO BEAM OR VIEW DIRECTLY WITH
OPTICAL INSTRUMENTS. CLASS 2
LASER PRODUCT.
MAX. OUTPUT 1mW, WAVELENGTH 630-670 nm, CLASS II (2)
LASER PRODUCT. COMPLIES WITH FDA 21CFR 1040.10
®
CAUTION
AVOID EXPOSURE. LASER
RADIATION IS EMITTED
FROM THIS APERTURE
FREE
data logging software
included with models
OS552, 553 and 554.
OMEGACARESMextended warranty program
is available for models shown on this page.
Ask your sales representative for full details
when placing an order. OMEGACARE
SM
covers parts, labor, and equivalent loaners.
We make running changes when
technical advances allow. Check at time
of ordering for additional features.

J-82
J
To Order Complete NEMA 4 (IP65) System
(Specify Model Number)
Model No. Price Output Temperature Range RS232 Free PC Software
OS551-MV-(*) $495 1 mV/deg -18 to 400°C (0 to 750°F) — —
OS551-MA-(*) 495 4 to 20 mA -18 to 400°C (0 to 750°F) — —
OS551-V1-(*) 495 0 to 5 Vdc -18 to 400°C (0 to 750°F) — —
OS552-MV-(*) 550 1 mV/deg -18 to 540°C (0 to 1000°F) Standard Standard
OS552-MA-(*) 550 4 to 20 mA -18 to 540°C (0 to 1000°F) Standard Standard
OS552-V1-(*) 550 0 to 5 Vdc -18 to 540°C (0 to 1000°F) Standard Standard
OS553-MV-(*) 650 1 mV/deg -18 to 870°C (0 to 1600°F) Standard Standard
OS553-MA-(*) 650 4 to 20 mA -18 to 870°C (0 to 1600°F) Standard Standard
OS553-V1-(*) 650 0 to 5 Vdc -18 to 870°C (0 to 1600°F) Standard Standard
OS554-MV-(*) 750 1 mV/deg -18 to 1370°C (0 to 2500°F) Standard Standard
OS554-MA-(*) 750 4 to 20 mA -18 to 1370°C (0 to 2500°F) Standard Standard
OS554-V1-(*) 750 0 to 5 Vdc -18 to 1370°C (0 to 2500°F) Standard Standard
Optical Range
Code Field of View (FOV)
– 1 Spot size 8.9 @ 609 mm (0.35" @ 24")
– 2 Spot size 12.7 @ 76 mm (0.5" @ 3")
– 3 Spot size 25.4 @ 508 mm (1" @ 20")
– 4 Spot size 25.4 @ 762 mm (1" @ 30")
– 5 Spot size 25.4 @ 1524 mm (1" @ 60")
– 6 Spot size 3.8 @ 152 mm (0.15" @ 6")
OS550 Series Optical Field of View Diagrams
Model No. Price Description
OS550-AP $65 Air purge collar
OS550-WC 195 Air/water cooling jacket
OS550-MF 65 Mounting frame
OS550-MB 35 Right-angle mounting bracket
OS550-MN 15 Mounting nut
OS550-LS 195 Sighting viewer (laser) (not shown)*
CAL-3-IR 125 NIST calibration certification
CAL-3-IR-X 175 NIST calibration for over 1000°F
PSR-24S 60
Regulated power supply, US plug, 90 to 264 Vac
input, 24 Vdc output, 400 mA, screw terminals, UL
PSR-24L 60
Regulated power supply, US plug, 90 to 264 Vac
input, 24 Vdc output, 400 mA, stripped leads, UL
PSR-24L-230 60
Regulated power supply, European plug, 230 Vac
input, 24 Vdc output, 400 mA, stripped leads, CE
TX4-100 28.50 Power/output extension wire 30 m (100')
* Insert optics code from table below.
Note: Sensor head cable can be extended at the factory at time
of purchase to a maximum of 15 m (50'). Add suffix “-(*)FT” to
order number and $1.00 per 0.3 m (1') over 5 m (15') to price.
Ordering Examples: OS552-MA-2, infrared thermometer with
-18 to 540°C (0 to 1000°F) range, 4 to 20 mA output and spot
size 12.7 mm (0.5") at 76 mm (3"), $550. OS551-MA-2-35FT,
OS551 with current output, 0.5 at 3" FOV, 11 meter sensor head
cable, $495 + 20 = $515. OCW-3, OMEGACARESMextends
standard 2-year warranty to a total of 5 years ($128),
$515 + 128 = $643.
Accessories
Optical Table*
MOST POPULAR MODELS HIGHLIGHTED!
* 1 unit suitable for aligning many heads.