Fluke 5618B-12-X Small Diameter Industrial RTD

Fluke Calibration

Fluke Calibration authorised distributor.

For secondary level performance with full ITS-90 calibration, Fluke Calibration’s 5618B series PRTs are an excellent choice for critical temperature measurements.

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£ 697.00

(£ 836.40 inc VAT.)

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Featuring a 3.2 mm diameter (1/8 in) sheath, these industrial standards probes have reduced response time without compromising precision. This small diameter 5618A probe works well in many applications where immersion depth is limited. Larger diameter probes give more measurement error in short immersion depth applications because they conduct more heat between ambient and the sensor.

The Fluke 5618B is also a great probe to use for calibrating your Fluke Calibration 9132 or 9133 infrared calibrators. In fact, these IR black body heat sources were designed to be calibrated with this type of probe. We recommend using the Fluke 5618B PRTs with the 1523, 1524, 1502A, 1529, or 1560 thermometer readouts.

Please Note: When ordering please specify the termination you require. ie. Fluke 5618B-12-G (gold pins).

X = termination.

Specify “A" (INFO-CON for 914X), “B" (bare wire), “D" (5-pin DIN for Tweener Thermometers), “G" (gold pins), “I" (INFO-CON for 1521 or 1522), “J" (banana plugs), “L" (mini spade lugs), "M" (mini banana plugs), “P" (INFO-CON for 1523 or 1524), or “S" (spade lugs).


305 mm (12 in) Small Diameter Probe, lead wire (cable) 6 ft.
Small diameter sheath, 3.2mm (0.125 in).
Excellent stability.
Includes ITS-90 coefficients.
NVLAP-accredited calibrated from –200°C to 500°C, lab code 200706-0.

Fluke 5618B-12-X Specifications:

  • Temperature Coefficient: 0.003923 Ω/Ω/ °C nominal.
  • Temperature Range: –200 °C to 500 °C.
  • Sheath Material: 316 SST.
  • Leads: 22 AWG PTFE, 6’.
  • Termination: Please specify.
  • Immersion: At least 100 mm (4 in) recommended.
  • Size: 305 mm L x 3.2 mm dia. (12 x 1/8 in).
  • Calibration: Includes manufacturer’s NVLAP-accredited calibration.
  • Fluke 5618B-12 Warranty: 1 year.

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Fluke 5618B-12-X Small Diameter Industrial RTD