103AT-11 IP67 NTC Thermistor TPE probe Full Overview
The 103AT-11 is a popular cost effective IP67 NTC Thermistor. This is a guide on the widely used thermistor probe that will highlight its characteristics , advantages and disadvantages to determine why it is so popular and aid in determining its selection.
Here are some of the 103AT-11 use cases that show just how dynamic this Thermistor can be.
- E-vehicle Battery Management
- Heat Pump sensors
- Solar & Underfloor Heating
- Refrigeration & HVAC Control
- E-vehicle fast-charging plugs
- Environmental monitoring
- Weather stations
The 103AT-11 with 1500mm of cable is available from the OnlineSensors Ltd store with no MOQ here
103AT-11 Accuracy
The 103AT-11 NTC Thermistor probe has high accuracy and can be replaced without the requirement of recalibration or adjustment to the thermistor circuitry
±0.3⁰C (at 25°C)
Better than ±0.5°C accurate from 0°C to 45°C
103AT-11 Thermistor characteristics
This Thermistor probe is an NTC Thermistor meaning the resistance will decrease as the temperature increases.
This increase or decrease is exponential see The thermistor guide for further clarification.
Nominal resistance value at 25C known as the Thermistor value is 10K
Beta value is 3433K
IP67 TPE Tip
The NTC thermistor sensor is protected by a TPE encapsulant , This provides the IP67 protection.
TPE stands for ThermoPlastic Elastomer.
TPE has a rubbery texture but is a plastic. This cost effective protection is practical and durable for most applications however the TPE material has the disadvantage of having a low chemical compatibility compared to a stainless steel probe.
For a comparative guide on trade offs for different temperature probe types please view the Thermistor probes Guide
Although the chemical compatibility is low compared to stainless steel, due to its low thermal mass the encapsulated thermistor can respond to temperature changes faster than most stainless steel temperature probes.
The TPE protection is enough for the majority of applications where a Thermistor is required rough and moist environments.
Dimensions of the TPE Tip for the 103AT-11 is only 5 x 6 x 15mm, making it ideal for detecting changes in temperature.
IP67 TPE Flexible Cable
like the TPE material used to protect the thermistor element the cable is also made from TPE.
It is flexible , durable and is supplied with stripped ends ideal for soldering into the thermistor PCB or attached to a PCB connector.
