The 103AT-11 is our popular cost effective IP67 NTC Thermistor probe.
The review highlights the Semitec 103AT-11Thermistor probes characteristics , advantages and why it is one of our most popular Temperature sensors.
Applications
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 is interchangeable 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
Thermistor Type
The 103AT-11 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
Nominal resistance is the resistance at 25°C that is used to reference the Thermistors value
View our thermistor guide for further clarity
The 103AT-11 Nominal Resistance at 25°C is 10KΩ
Beta Value
Beta values are needed to calculate the temperature from resistance.
For more information on eta values visit the thermistor guide
The 103AT-11 Beta value is 3433K
103AT-11 Physical characteristics
The 103AT-11 is flexible , IP67 rated and provides adequate protection for most applications.
- 103AT-11 TPE Cable
- 103AT-11 TPE TIP
- The connection between the TPE Cable and TIP is seamless adding to its sleek and flexible properties
- The thermistor bead is fully enclosed providing the IP67 protection
The NTC thermistor sensor is protected by a TPE encapsulant , This provides the IP67 protection.
Dimensions of the Thermistor Probe
The TPE Tip for the 103AT-11 is only 5 x 6 x 15mm, this low thermal mass makes it ideal for detecting changes in temperature.
What is TPE?
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 TPE 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
TPE Chemical Compatibility
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.
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.
