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    Home Environmental & Temperature Thermometers, Humidity Meters & Dataloggers Thermocouples & Thermal Probes

    Fluke 5618B Small Diameter Industrial RTD Probes - Choice of Termination

    Buy a Fluke Get One Free (Spend £150+)
    Fluke 5618B Small Diameter Industrial RTD Probes - Choice of Termination
    Buy a Fluke Get One Free (Spend £150+)
    All Fluke Calibration Products
    • Suitable for -200° to 500°
    • NVLAP-accredited calibration report with each probe
    • Recommended for the 1523, 1524, 1502A, 1529, or 1560 thermometer readouts
    SKU
    5618B-PROBES

    Read More

    View All Thermocouples & Thermal Probes

    These industrial standards probes have a reduced response time without compromising precision. They work well in many applications where immersion depth is limited. Termination ranges available from A to S. Termination Key.

    Product Ranges

    • Fluke 5618B-6-B Small Diameter Industrial RTD 1/8 x 6
    • Fluke 5618B-6-D Small Diameter Industrial RTD 1/8 x 6
    • Fluke 5618B-6-G Small Diameter Industrial RTD 1/8 x 6
    • Fluke 5618B-6-J Small Diameter Industrial RTD 1/8 x 6
    • Fluke 5618B-6-L Small Diameter Industrial RTD 1/8 x 6
    • Fluke 5618B-6-M Small Diameter Industrial RTD 1/8 x 6
    • Fluke 5618B-6-P Small Diameter Industrial RTD 1/8 x 6
    • Fluke 5618B-6-S Small Diameter Industrial RTD 1/8 x 6
    • Fluke 5618B-9-A Small Diameter Industrial RTD 1/8 x 9
    • Fluke 5618B-9-B Small Diameter Industrial RTD 1/8 x 9
    • Fluke 5618B-9-D Small Diameter Industrial RTD 1/8 x 9
    • Fluke 5618B-9-G Small Diameter Industrial RTD 1/8 x 9
    • Fluke 5618B-9-J Small Diameter Industrial RTD 1/8 x 9
    • Fluke 5618B-9-L Small Diameter Industrial RTD 1/8 x 9
    • Fluke 5618B-9-M Small Diameter Industrial RTD 1/8 x 9
    • Fluke 5618B-9-P Small Diameter Industrial RTD 1/8 x 9
    • Fluke 5618B-9-S Small Diameter Industrial RTD 1/8 x 9
    • Fluke 5618B-12-A Small Diameter Industrial RTD 1/8 x 12
    • Fluke 5618B-12-B Small Diameter Industrial RTD 1/8 x 12
    • Fluke 5618B-12-D Small Diameter Industrial RTD 1/8 x 12
    • Fluke 5618B-12-G Small Diameter Industrial RTD 1/8 x 12
    • Fluke 5618B-12-J Small Diameter Industrial RTD 1/8 x 12
    • Fluke 5618B-12-L Small Diameter Industrial RTD 1/8 x 12
    • Fluke 5618B-12-M Small Diameter Industrial RTD 1/8 x 12
    • Fluke 5618B-12-P Small Diameter Industrial RTD 1/8 x 12
    • Fluke 5618B-12-S Small Diameter Industrial RTD 1/8 x 12
    • Termination Key:
    • A (INFO-CON for 914X)
    • B (Bare wire)
    • D (5-pin DIN for Tweener Thermometers)
    • G (Gold pins)
    • J (Banana plugs)
    • L (Mini spade lugs)
    • M (Mini banana plugs)
    • P (INFO-CON for 1523 or 1524)
    • S (Spade lugs)
    £1,049.00
    £1,258.80 inc vat
    Free Delivery*
    Important Notice
    This item is made-to-order exclusively for you once your order is placed. As a result, it is not eligible for cancellation or return under our standard policy. Your statutory rights remain unaffected.
    Buy a Fluke Get One Free (Spend £150+) Find Out More
    Available Models Select An Option
    1/8 × 9", S 5618B-9-S £1,049.00 Made to Order 1/8 × 6", M 5618B-6-M £1,049.00 Made to Order 1/8 × 9", P 5618B-9-P £1,049.00 Made to Order 1/8 × 9", M 5618B-9-M £1,049.00 Made to Order 1/8 × 9", L 5618B-9-L £1,049.00 Made to Order 1/8 × 9", J 5618B-9-J £1,049.00 Made to Order 1/8 × 9", G 5618B-9-G £1,049.00 Made to Order 1/8 × 9", D 5618B-9-D £1,049.00 Made to Order 1/8 × 9", B 5618B-9-B £1,049.00 Made to Order 1/8 × 9", A 5618B-9-A £1,049.00 Made to Order 1/8 × 6", S 5618B-6-S £1,049.00 Made to Order 1/8 × 6", P 5618B-6-P £1,049.00 Made to Order 1/8 × 6", L 5618B-6-L £1,049.00 Made to Order 1/8 × 12", B 5618B-12-B £1,049.00 Made to Order 1/8 × 6", J 5618B-6-J £1,049.00 Made to Order 1/8 × 6", G 5618B-6-G £1,049.00 Made to Order 1/8 × 6", D 5618B-6-D £1,049.00 Made to Order 1/8 × 6", B 5618B-6-B £1,049.00 Made to Order 1/8 × 12", S 5618B-12-S £1,049.00 Made to Order 1/8 × 12", P 5618B-12-P £1,049.00 Made to Order 1/8 × 12", M 5618B-12-M £1,049.00 Made to Order 1/8 × 12", L 5618B-12-L £1,049.00 Made to Order 1/8 × 12", J 5618B-12-J £1,049.00 Made to Order 1/8 × 12", G 5618B-12-G £1,049.00 Made to Order 1/8 × 12", D 5618B-12-D £1,049.00 Made to Order 1/8 × 12", A 5618B-12-A £1,085.00 Made to Order
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    Buy a Fluke Get One Free (Spend £150+)

    Spend £150+ (Ex VAT) on any qualified Fluke or Beha-Amprobe product(s) and claim a free tool of your choice from the list at Fluke Promotion. Valid February 17 2025 - July 31 2025.

    Claims are made direct to Fluke. Terms and conditions apply.
    Technical Information
    Specification
    Specifications
    Resistance Nominal 100 Ω at 0 °C
    Temperature Coefficient 0.003923 Ω/Ω/ °C nominal
    Temperature Range -200 °C to 500 °C
    (-200 °C to 300 °C for 5618B-6-X)
    Drift Rate ± 0.1 °C when used periodically to 500 °C
    Drift ± 0.007 °C at 0.010 °C
    Sheath Material 316 SST
    Leads 22 AWG PTFE, 6'
    Hysteresis Less than 0.01 °C at 0 °C when using -196 °C and 420 °C as the endpoints
    Time Constant Four seconds maximum for 63.2 % response to step-change in water moving at 3 fps
    Thermal EMF Less than 25 mV at 420 °C
    Calibration Includes manufacturer's NVLAP-accredited calibration w/ITS-90 coefficients
    R vs. T values in 1 °C increments
    lab code 200706-0
    Size 5618B-12: 305 mm L x 3.2 mm dia. (12 x 1/8 in)
    5618B-9: 229 mm L x 3.2 mm dia. (9 x 1/8 in)
    5618B-6: 152 mm L x 3.2 mm dia. (6 x 1/8 in)
    Calibrated Accuracy† (k=2) ± 0.026 °C at -200 °C
    ± 0.066 °C at 0 °C
    ± 0.219 °C at 500 °C
    Calibration NVLAP-accredited calibration included lab code 200706-0.
    Please see the calibration uncertainty table and its explanation of changeable uncertainties.
    †Includes calibration uncertainty and drift specification.
    NVLAP† Calibration Uncertainty
    Temperature Expanded Uncertainty (k=2)
    -196 °C 0.024 °C
    -38 °C 0.011 °C
    0 °C 0.010 °C
    200 °C 0.018 °C
    420 °C‡ 0.029 °C
    Note: Calibration uncertainties depend on the uncertainties of the lab performing the calibration.
    Subsequent calibrations of these probes performed with different processes, at different facilities,
    or with changed uncertainty statements may state different uncertainties.
    †Lab code 200706-0 ‡300 °C for 5618B-6
    Additional Information
    SKU
    5618B-PROBES

    Customer Reviews

    International Enquiry
     
    Fluke 5618B Small Diameter Industrial RTD Probes - Choice of Termination
    Description Offers Technical Info Reviews
    £1,049.00
    £1,258.80 inc vat
    £1,049.00
    £1,258.80 inc vat
    Available Models Select An Option
    1/8 × 9", S 5618B-9-S £1,049.00 Made to Order 1/8 × 6", M 5618B-6-M £1,049.00 Made to Order 1/8 × 9", P 5618B-9-P £1,049.00 Made to Order 1/8 × 9", M 5618B-9-M £1,049.00 Made to Order 1/8 × 9", L 5618B-9-L £1,049.00 Made to Order 1/8 × 9", J 5618B-9-J £1,049.00 Made to Order 1/8 × 9", G 5618B-9-G £1,049.00 Made to Order 1/8 × 9", D 5618B-9-D £1,049.00 Made to Order 1/8 × 9", B 5618B-9-B £1,049.00 Made to Order 1/8 × 9", A 5618B-9-A £1,049.00 Made to Order 1/8 × 6", S 5618B-6-S £1,049.00 Made to Order 1/8 × 6", P 5618B-6-P £1,049.00 Made to Order 1/8 × 6", L 5618B-6-L £1,049.00 Made to Order 1/8 × 12", B 5618B-12-B £1,049.00 Made to Order 1/8 × 6", J 5618B-6-J £1,049.00 Made to Order 1/8 × 6", G 5618B-6-G £1,049.00 Made to Order 1/8 × 6", D 5618B-6-D £1,049.00 Made to Order 1/8 × 6", B 5618B-6-B £1,049.00 Made to Order 1/8 × 12", S 5618B-12-S £1,049.00 Made to Order 1/8 × 12", P 5618B-12-P £1,049.00 Made to Order 1/8 × 12", M 5618B-12-M £1,049.00 Made to Order 1/8 × 12", L 5618B-12-L £1,049.00 Made to Order 1/8 × 12", J 5618B-12-J £1,049.00 Made to Order 1/8 × 12", G 5618B-12-G £1,049.00 Made to Order 1/8 × 12", D 5618B-12-D £1,049.00 Made to Order 1/8 × 12", A 5618B-12-A £1,085.00 Made to Order