
High-Temp, Fast Response,
Extended Warranty
P
rogram
S
M
Infrared 
Thermometer
OS66 Series
$
995
All Models
ptional
O
†
ptional
O
†
†
⻬ 800 to 1500°C (1472 to 2732°F) Range 
⻬ ±1% Accuracy 
⻬ Fast 300 msec Response 
⻬ 50:1 or 75:1 Optics
The OS66 Series of non-contact infrared thermometers 
extends OMEGA’s OS65 Series shown on preceding 
pages. The difference: OS66 Series is designed for 
higher temperature applications, with accurate results 
in the 800 to 1500°C (1472 to 2732°F) range.
The OS66 Series includes an infrared sensing head, 
signal processor module and detachable 4.6 m (15') 
interconnecting cable. The OS66 Series works with the 
same accessories as the OS65 Series.
Specifications
Accuracy: ±1% rdg ±1°C (2°F) 
Repeatability: ±0.50% rdg ±1 digit 
Spectral Response: 0.85 to 0.95 microns 
Emissivity Range: 0.10 to 0.99 in 0.01 steps 
Response Time: 300 msec 
Field of View: 50:1 or 75:1 
Power: 9 to 30 Vdc, 50 mA (120 Vac with optional 
AC adaptor, model OS65-AC) 
Environmental Ratings: NEMA 4 (IEC529, IP66) water
tight and dust tight for sensing head and optional 
NEMA 4 (IP65) electronics enclosure
Ambient Operating Range: Sensing head -18 to 66°C 
(0 to 150°F), extends to -18 to 177°C (0 to 350°F) with 
optional cooling; electronics -18 to 49°C (0 to 120°F)
Connection: 4.5 m (15') cable standard; 15 m (50') optional  
Lead Wire Resistance (Current Output Models), Ω:
(Supply voltage-7/0.02)
Load Current (Voltage Output Models): 10 mA max 
Dimensions: Sensing head 13.46 L x 4.14 cm D 
(5.3 x 1.63"), 1 
(5.25 x 3.62"); optional NEMA 4 (IP65) or NEMA 12 (IP52) 
enclosure 15.24 x 10.16 x 7.62 cm (6 x 4 x 3")
Weight: Sensing head 0.3 kg (9 oz); electronics only 
(without enclosure) 0.1 kg (4 oz); electronics mounted in 
optional NEMA 4 (IP65) enclosure 1.2 kg (2.6 lb)
Optical Table
Ordering Suffix FOV (Field of View) Min. Spot Size
1
⁄2-20 thread; electronics 13.35 x 9.19 cm 
-1 50:1
-2 75:1
1
⁄4" at 15"
1
⁄4" at 18"
OMEGACARESMextended warranty program 
is available for models shown on this page. 
Ask your sales representative for full details 
when placing an order. OMEGACARE 
covers parts, labor and equivalent loaners.
SM
OS66-MA1-1, $995 
with optional NEMA 4 
(IP65) enclosure, shown 
smaller than actual size.
MOST POPULAR MODELS HIGHLIGHTED!
To Order (Specify Model Number)
Model No. Price Output Type 
OS66-R(*) $995 R 
OS66-S(*) 995 S 
OS66-B(*) 995 B 
OS66-MV(*) 995 1 mV/deg 
OS66-MA1(*) 995 4 to 20 mA 
OS66-MA2(*) 995 0 to 20 mA 
OS66-V(*) 995  0 to 5V
* Insert optics code from optical table. 
Note: If electronics board is to be mounted in OS65-CC4 card cage, 
add suffix “-CC” to model number. No additional charge.
OS66 Accessories 
(See OS65 Series for add’l accessories)
Model No. Price Description 
OS66-VW1.3 $395 
OS66-VW.8 275
Note: Use of viewing window requires additional sensor calibration. 
Consult OMEGA for details.
Additional Options for OS66 Series
Suffix Price Description
**
-RS2 
**
-RS4
-C50 50
-NIST
††
-CE
-NEMA4 100 NEMA 4 electronics enclosure
-NEMA12 50 NEMA 12 electronics enclosure
**Note: Only 1 digital communications option (either RS232C or 
RS485) can be specified. 
Ordering Example: OS66-MV-1-RS2-C50, infrared thermometer 
with 1 mV/deg output type, 50:1 optics, RS232C communications 
and 50 ft cable, $995 + 75 + 50 = $1120. OCW-3, OMEGACARE 
extends standard 2-year warranty to a total of 5 years ($248), 
$995 + 248 = $1243.
$75 RS232C digital communications
75 RS485 digital communications
†
15 m (50') cable [in place of 4.5 m (15') cable)]
150 NIST-traceable calibration certificate
47 CE marked model
J-88
Viewing window, 1.3" dia. (8 to14) 
Viewing window, 0.8" dia. (8 to 14)
J
SM

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