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Precision Thermistor Sensors & Probes

Popular Precision Thermistor Probes for Laboratory Applications


Item# ON-403-PP

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $128.68
10-24 $122.25
25-99 $115.81
100-499 $109.38
500-999 $102.94
1000+ $96.51

In stock

Lead Time (If not in stock): 6 weeks
Popular Precision Thermistor Probes for Laboratory Applications ON-403-PP ON-403-PP
  • Precision Thermistor
  • Various Styles to Meet Numerous Applications
  • Phone-Plug Connector Standard
  • 2252 Ohm @ 25 Degrees C

ON-403-PP Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Sensor Application
Sheath Material
Probe Diameter
Probe Length
Process Temperature Unit
Process Temperature Min
Process Temperature Max
Process Temperature Range
Nominal Resistance
Cable Insulation
Cable Length
Termination Connection Type

OMEGA ENGINEERING Series "400" probes are for use in laboratory and R&D applications and have
interchangeable sensor accuracy of ±0.1°C. Each sensor is supplied with a 10-foot vinyl cable and
phone-plug connector. The Series "400" probes are 2252 Ohm @ 25°C.

Dimensions in mm (")
ThermistorON-401-PPGeneral Purpose. Used for short-term water and sub-soil readings. Most rugged, waterproof construction.100°C
ThermistorON-401-PP-VWater resistant, soft, flexible, vinyl tipped version of above model.
ThermistorON-402-PPSmall Flexible. Vinyl sheath and tip. Cuvette temperatures. General purpose measurement. Continuous length.100°C
General Purpose
ThermistorON-403-PPTubular. Stainless steel probe for rugged duty. Often used for liquid immersion. Probe is immersible only to cap.100°C
ThermistorON-404-PPTubular-Glass. Chemically inert for liquid immersion use. Thermometric titration. Freezing point determination. Pyrex, 127 mm (5") long.100°C
ThermistorON-405-PPAir Temperature. Stainless steel probe suitable for test rooms, incubators, remote air readings, monitoring of gas streams, etc.100°C
ON-406-PPSame as ON-405-PP but with economical plastic housing.
ThermistorON-408-PP"Banjo" Surface Temperature. Skin, oral, axillary, water bath, air, surfaces temperatures. Stainless steel.100°C
ThermistorON-409-PPAttachable Surface Temperature. Stainless steel cup, epoxy-backed. Easy to tape on flat surfaces. Good for heat loss or compression efficiency study of piping.100°C
ThermistorON-410-PPTubular With Fitting. Rugged, stainless steel probe with pipe fitting.Suitable for taking readings in pipes or inside closed vessels.100°C
Gas, Liquid
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Rated 5 out of 5 by from Accurate enough, we’ll see how long that lasts! Handy piece of equipment, quite literally. That little prove you need to measure surface temperature.
Date published: 2023-08-26
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What stainless steel material is this? It only mentions 300 series. Is this 304 or 316?

Asked by: Abdelgwad1
Thank you for your inquiry. The tube is made from 316. The transition barrel is made from 303.
Answered by: NorwalkAE_SP
Date published: 2024-04-18

For probe model 403, does the entirety of the probe need to be submerged in liquid to get an accurate reading? Also, for probe 409, can it be used in liquids?

Asked by: Lani
The ON-403 can be immersed and 1" is probably a good depth to try and achieve. The ON-409 would not be suitable for use in liquid.
Answered by: ApplicationsEngineerANB
Date published: 2024-02-14

Can this probe be specially calibrated as a system with the HH42A to a specification of +/- 0.05 °C ?

Asked by: ORSS
Thank you for your question. Although the ON-403-PP and the HH42A can be calibrated together, the accuracy would be the accuracy of the probe plus the accuracy of the HH42A so it can not be +/-.05C
Answered by: AEMO
Date published: 2020-07-13
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