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OS301A-USB Series infrared sensors measure the temperature of surfaces without contact.
They provide this measurement as a linear 2-wire 4 to 20 mA output, which is compatible
with almost any indicator, controller, recorder or data logger without the need for special
interfacing or signal conditioning.
A choice of measurement wavelengths and temperature ranges is available to suit a range of
applications.
General-purpose OS301A-USB (8-14 μm) models can measure from -40°C to 1000°C. They
are suitable for measuring high-emissivity materials such as paper, thick plastics, food,
pharmaceuticals, rubber, asphalt and painted surfaces.
Short-wavelength OS150A-2USB (2.2 μm) models have a choice of temperature ranges
from 45°C to 2000°C. They provide a more accurate reading when measuring lowemissivity
materials such as many reflective metals. They are also capable of measuring through glass
viewports.
GENERAL SPECIFICATIONS
Series
Spectral Response
Application
Temperature range
Response time
Output
Communications
Optics
Accuracy
Repeatability
Emissivity Setting
Maximum Span
(4-20 mA output)
Minimum Span
(4-20 mA output)
ELECTRICAL SPECIFICATIONS
Supply Voltage
Sensor Voltage (minimum)
Maximum Loop Impedance
OS150A-2USB
2.2 µm
Ferrous metals and high-
temperature targets
Choice of ranges from 45°C
to 2000°C
2-wire, 4-20 mA, linear with measured temperature
USB 2.0 (removable USB cable and software included)
using the Modbus protocol
Choice of divergent or focused optics for small or large
targets at short or long distances (see Optics)
± 2°C or 1% of reading,
whichever is greater
± 0.5°C or 0.5% of reading, whichever is greater
Full temperature range
24 V DC (28 V DC max)
6 V DC
900 Ω @ 24 V DC
OS301A-USB
8 to 14 µm
General purpose
-40°C to 1000°C
200 ms
± 1°C or 1% of reading,
whichever is greater
0.1 to 1.0
100°C
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