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    Temperature Probes

    There can be a lot of choices when it comes to temperature sensors, depending on the application. In today's market, there is a wider range of sensors than ever before, and if you do not understand calibrations, you might feel lost.

    We will discuss three main types of thermosensors in this article: thermocouples, RTDs and thermistors. By reading it, you will know how to identify each type and what it has to offer in terms of benefits.

    Temperature Probes

    An instrument that measures temperature is referred to as a temperature probe. In other words, the temperature probes are used to make measurements of air, liquid or surface temperatures and are available in various forms such as thermocouples, thermistors and PT100 to complement thermometers and temperature data logging instrumentation.

    You can easily measure temperature using temperature probes. You can do this by sticking a temperature probe to a surface, screwing or inserting it into an object, or submerging it in liquid. A temperature probe can often be customized according to its application-specific temperature range, cable length, and connection due to the diversity of applications for which they are suited.

    What are the types of Temperature Probes?

    1 - Resistive Temperature Detectors (RTD temperature sensor)

    An RTD is also known as a resistive temperature detector, are highly precise temperature probe. Moreover, these RTD temperature sensors come in Platinum and Nickel finishes and various resistance ranges, including PT100/PT1000 or NI100/Ni1000, with a tendency to wear out over time, necessitating frequent replacement.

    2 - Negative Temperature Coefficient (NTC temperature sensor) thermistor

    Temperature probes using NTC thermistors (Negative Temperature Coefficient) are usually potted into customised housings depending on the client's requirements.

    Temperature thermistors reflect changes in temperature quickly and with very high accuracy. Often lower in cost, but offer a smaller temperature range. It is usually best to use NTC temperature sensors for applications where temperatures range from -40°C to +125°C when using epoxy-encapsulated NTCs whereas glass-encapsulated NTCs can reach up to +250°C.

    3 - Thermocouple prober

    Thermocouples are the most commonly used temperature probe, this is because of their simplicity, and speed of response to changes in temperature. Thermocouple probes are less stable over time and will need replacing more often.

    There are many types of thermocouples, all made from different materials which allow for various temperatures. The most common is a Type K thermocouple, which has a temperature range of -180 to 1300 degrees Celsius.

    Typical Applications for Temperature Probes

    Temperature probes are known for their robust design. This means they are ideal for many general-purpose industrial, commercial and scientific applications where accurate temperature measurement and monitoring play a crucial role to ensure equipment functions properly and efficiently. They can also be used for measuring and testing during investigations and tests.

    These sensor probes are often used in the following areas:

    • Air conditioning and refrigeration
    • Chemical industry
    • Plastics processing
    • Stoves and grills
    • Meat temperature probe or Food temperature probe for food processing
    • Laboratories
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    產品詳述
    單價
    Brand
    Sensor Type
    Probe Type
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    Maximum Temperature Measurement
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    • RS庫存編號 181-1766
    • 製造零件編號 0609 7072
    HK$1,454.20
    Testo
    -
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    testo 176 T2, testo 720, testo 735-1, testo 735-2
    • RS庫存編號 456-9092
    • 製造零件編號 0602 5792
    HK$369.47
    Testo
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    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    922 Series, 925 Series
    HK$1,034.51
    Testo
    NTC
    Air
    -
    50 (Shaft Tip) mm, 115 (shaft) mm
    4 (Shaft Tip) mm, 5 (Shaft) mm
    +125 °C
    1.1m
    ±0.2 °C
    -
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    TESTO 110, TESTO 112, TESTO 175, TESTO 176, TESTO 550s, TESTO 557s, TESTO 570s, TESTO 720
    • RS庫存編號 191-6142
    • 製造零件編號 0613 2211
    HK$1,333.65
    Testo
    CTN
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    +150 °C
    1.5m
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    testo 110, testo 112, testo 175, testo 176, testo 720
    HK$369.47
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    • RS庫存編號 516-0618
    • 製造零件編號 0602 0393
    HK$1,531.80
    Testo
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    Testo
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    • RS庫存編號 176-5610
    • 製造零件編號 0615 1712
    HK$862.69
    Testo
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    -
    -
    -
    -
    -
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    testo 110, testo 150, testo 440, testo 440 dP
    • RS庫存編號 145-0242
    • 製造零件編號 0572 2153
    HK$988.30
    Testo
    NTC
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    ±0.2 °C
    Plug
    -
    -
    testo Saveris 2
    • RS庫存編號 456-7989
    • 製造零件編號 0602 4892
    HK$2,123.51
    Testo
    -
    -
    -
    -
    -
    +400 °C
    1.5m
    -
    -
    -
    -
    testo 108, testo 175, testo 176, testo 440, testo 440 dP, testo 570s, testo 635, testo 735, testo 760, testo 770, testo 830, testo 835, testo 915i, testo 922, testo 926
    HK$2,610.30
    Testo
    PT100
    PT100
    Needle
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    3mm
    400 °C
    -
    -
    -
    -
    -
    -
    HK$1,847.60
    Testo
    PT100
    PT100
    Needle
    90mm
    4mm
    150 °C
    -
    -
    -
    -
    -
    -
    • RS庫存編號 518-5285
    • 製造零件編號 0602 4692
    HK$842.96
    Testo
    K
    Surface
    Pipe Clamp
    -
    4mm
    +100 °C
    1.2m
    -
    Miniature Plug
    -
    -
    testo 108, testo 175, testo 176, testo 440, testo 440 dP, testo 570s, testo 635, testo 735, testo 760, testo 770, testo 830, testo 835, testo 915i, testo 922, testo 925
    • RS庫存編號 512-0547
    • 製造零件編號 0613 1912
    HK$907.60
    Testo
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    720 Series
    • RS庫存編號 512-0682
    • 製造零件編號 0602 2693
    HK$1,253.60
    Testo
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    testo 108, testo 175, testo 176, testo 440, testo 440 dP, testo 635, testo 735, testo 760, testo 770, testo 830, testo 835, testo 915i, testo 922, testo 925
    HK$5,188.40
    Testo
    PT100
    PT100
    Needle
    295mm
    4mm
    300 °C
    -
    -
    -
    -
    -
    -
    • RS庫存編號 512-0569
    • 製造零件編號 0602 0693
    HK$1,393.55
    Testo
    Type K
    Surface
    -
    150mm
    2.5 mm, 4 mm
    +1000 °C
    1.2m
    -
    Miniature Plug
    -
    -
    -
    • RS庫存編號 284-6808
    • 製造零件編號 0572 1001
    HK$848.60
    Testo
    NTC
    Penetration
    -
    30mm
    5mm
    125
    -
    -
    -
    -
    -
    -
    • RS庫存編號 272-6542
    • 製造零件編號 0615 5605
    HK$2,094.70
    Testo
    NTC
    NTC
    Needle
    -
    -
    120 °C
    -
    -
    -
    -
    -
    -
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