This Series is a range of high quality, low cost,
compact sensors which measure the temperature
of inaccessible or moving objects and materials.
They measure temperatures from -20 to 500°C
(-4 to 932ºF), accurately and consistently, with an
outstanding response time of 240 ms. Infrared (IR)
sensors are available as either 2- or 4-wire units. Twowire
IR sensors transmit the target temperature as a
4 to 20 mA output and offer a simple solution for most
non-contact temperature measurement applications.
Four-wire IR sensors transmit the target temperature
as a 0 to 50 mV or thermocouple output (Type J, K or
T) plus the internal sensor temperature as a 4 to
20 mA output. This second output can be used to
ensure that the sensor is being operated within the
correct ambient temperature limits and prevent
damage caused by overheating or overcooling. It can
also be used to give an approximate indication of
the air temperature surrounding the sensor. IR
sensors are fitted with precision germanium lenses
for accurate optics.
SPECIFICATIONS Accuracy: ±1% of reading or ±1ºC whichever is greater Repeatability: ±0.5% of reading or ±0.5ºC whichever is greater Emissivity: Fixed at 0.95 Response Time, t90: 240 ms (90% response) Spectral Range: 8 to 14 µm Supply Voltage: 24 Vdc (28 Vdc max) Min Sensor Voltage: 6 Vdc Max Loop Impedance: 900 O (4 to 20 mA output) Output Impedance: 56 O (voltage/thermocouple output) Mechanical Construction: Stainless steel Dimensions: 103 L x 18 mm D (4.06 x 0.71") Thread Mounting: M16 x 1 mm pitch Cable Length: 1 m (3.3') (included) longer lengths available to order Weight with Cable: 95 g (3.35 oz) Environmental Rating: IP65 Ambient Temperature Range: 0 to 70ºC (32 to 158ºF) Relative Humidity: 95% max non-condensing
† All dollar amounts on this site are shown in US currency.
Note: Comes complete with sensor head, 1 m (3.3') cable and operator’s manual. Ordering Example: (1) OS151-HT IR Sensor 0 to 500ºC (32 to 932ºF) 4 to 20 mA , $230.00