Please note this series has been upgraded to the new A models which are dimensionally different to the previous models. See dimension drawing below
The OS301A-USB Series measures temperatures
from -40 to 1000°C accurately and
consistently, with an outstanding response time of
200 mS. The 4 to 20 mA output is compatible with
almost any indicator, controller, recorder, data logger
etc. without the need for special interfacing or
OS301A-USB is specially designed for
distant targets and has an optical resolution of 30:1.
The OS801A-USB is a close-focus model, designed for small targets and
measures a spot size of 5 mm diameter at a distance of
All of these sensors are fully
configurable from a PC using the software and USB
cable supplied. This user friendly software enables the
user to set the range and emissivity, compensate for
reflected energy; apply filtering; select max, min,
average or instantaneous readings; and peak or valley
hold processing. These features can also be monitored
and adjusted by MODBUS over USB communications, allowing use with other software.
Other features include data acquisition, alarms and a
scrolling graphical display. The sensor will operate with
the 4 to 20 mA cable connected, the USB cable
connected, or both. The USB cable has an IP65
connector at the sensor end. An IP65 cap protects the
sensor when the USB cable is not connected.
Specifications Temperature Range: -40 to 1000°C (-40 to 1832°F) Field-of-View: OS301A-USB: 30:1 OS801A-USB: 5 mm dia at 100 mm distance Output: 4 to 20 mA (2-wire, loop powered) Configuration: Via PC port conforming to USB 2.0 Accuracy: ±1% of reading or ±1°C whichever is greater Repeatability: ±0.5% of reading or ±0.5°C whichever is greater Emissivity: 0.1 to 1.0 Response Time: 200 mS Spectral Range: 8 to 14 µm Supply Voltage: 24 Vdc (28 Vdc max) Sensor Voltage: 6 Vdc min Maximum Loop Impedance: 900 Ω @ 24 Vdc Maximum Span: 1000°C (1832°F) Minimum Span: 100°C (212°F) Mechanical Construction: Stainless steel Dimensions: 61 L x 27.6 mm D Thread Mounting: M20 x 1 mm pitch Weight with Output Cable: 155 g Output Cable Length: 1 metre USB Cable Length: 1.8 metre Environmental Rating: IP65 Ambient Temperature Range: 0 to 70°C Relative Humidity: 95% max non-condensing MODBUS:
Baud Rate: 9600 Format (bits): 8 data, no parity, 1 stop Reply Delay: 20 mS
† All amounts shown in EUR, GBP, or USD Note: Comes complete with sensor head, 1 metre output cable, 1.8 metre USB cable, and operator’s manual. OmegaConfig software is available for free download.