dry block calibrators Fluke 9142/9143/9144


Dry block calibrators are used to calibrate resistance temperature sensors (RTD) or thermocouples. The Fluke 9142/9143/9144 calibrators are lightweight and portable, making them ideal for field calibrations. Thanks to ambient temperature compensation, the dry block calibrators are also very accurate in process environments. Optional process electronics enable the connection of an external temperature reference. In addition, very short heating and cooling times to quickly reach setpoints in the temperature range from -25 °C to 660 °C increase calibration efficiency. This combination makes the Fluke 9142/9143/9144 dry block calibrators ideal for on-site process calibrations.


The dry block calibrators are used with inserts with a depth of 150 mm with holes for various types of sensors. To ensure precise calibration of short and bulky temperature sensors, the calibrators have a dual zone control. This enables an axial temperature homogeneity of ±0.05 °C at 40 mm immersion depth. This active temperature control also helps to achieve radial homogeneity of up to ±0.01 °C.

The calibration devices have an ambient temperature compensation to guarantee the accuracy of the calibration also in process environments.

Dry block calibrator Fluke 9142

Dry block calibrator Fluke 9142

Dry block calibrator with process electronics

Calibration with external reference


The Fluke 9142/9143/9144 dry block calibrators contain an ITS-90 reference PRT. The accuracy of the integrated display is between ±0.01 °C and ±0.07 °C, depending on the measured temperature.

The optional process electronics allow the connection of an external temperature reference to increase the accuracy of the calibration. The second measuring channel can also be used to read out a test probe (thermocouples of different types or a 2-, 3-, 4- wire RTD). A 4… 20 mA connection enables the measurement of a 4… 20 mA transmitter with a 24 V loop supply to supply the transmitter with voltage.


Bis zu acht Solltemperaturwerte mit Stabilitätskriterien und Verweilzeit können programmiert und gespeichert werden. Die Anzeige und ein akustisches Signal informiert den Anwender, wann die Sollwerttemperatur erreicht und stabil ist. Am Ende der Verweilzeit zeichnet der Blockkalibrator die Temperaturen der Temperaturreferenz als auch des Testsensors (Unit Under Test) auf, welche an die Prozesselektronik angeschlossen ist. Danach steuert der Kalibrator den nächsten Sollwert an. Die Blockkalibratoren verfügen über einen Datenspeicher für 20 solcher Kalibrierungen.

Up to eight target temperature values with stability criteria and dwell time can be programmed and saved. The display and an acoustic signal inform the user when the setpoint temperature has been reached and is stable. At the end of the dwell time, the block calibrator records the temperatures of the temperature reference as well as of the test sensor (Unit Under Test), which is connected to the process electronics. Then the calibrator controls the next target value. The dry-block calibrators have a data memory for 20 such calibrations.

Fluke 9143 dry block calibrator display

Display with external reference and test probe data

Fluke dry block calibrator Bakrona


Bakrona is the authorized representative of Fluke Calibration for industrial temperature calibration in Switzerland and Liechtenstein. We offer our customers in the pharmaceutical, biotech, aviation and food industries a comprehensive service. From advice on new devices to revision and calibration of existing calibrators and references for the parameters temperature, pressure and relative humidity.

Bakrona Fluke representative Switzerland
Fluke Kalibrierung Thermometer Bakrona


Bakrona ist offizieller Vertreter von Fluke Kalibrierung in der Schweiz. Wir bieten unseren Kunden in der Pharma, Biotech, Luftfahrt und Lebensmittel Industrie einen umfassenden Service. Von der Beratung für Neugeräte bis zur Revision und Kalibrierung bestehender Kalibratoren und Referenzen für die Parameter Temperatur, Druck und relative Feuchte.



Specification 914291439144
Range (23 °C amb.)–25 °C to 150 °C33 °C to 350 °C50 °C to 660 °C
Accuracy± 0.2 °C (full range)± 0.2 °C (full range)± 0.35 °C at 420 °C
± 0.5 °C at 660 °C
Process version accuracy± 0.01 °C at –25 °C ± 0.02 °C at 50 °C± 0.02 °C at 50 °C
± 0.02 °C at 155 °C± 0.04 °C at 350 °C± 0.07 °C at 660 °C
Stability± 0.01 °C (full range)
± 0.02 °C at 33 °C± 0.03 °C at 50 °C
± 0.03 °C at 350 °C± 0.05 °C at 660 °C
Radial uniformity± 0.01 °C (full range)± 0.01 °C at 33 °C ± 0.02 °C at 50 °C
± 0.02 °C at 350 °C± 0.15 °C at 660 °C
Axial uniformity at 40 mm± 0.05 °C (full range)± 0.04 °C at 33 °C ± 0.05 °C at 50 °C
± 0.2 °C at 350 °C± 0.4 °C at 660 °C
Immersion depth150 mm150 mm150 mm
Heating time (max)23 min5 min15 min
Cooling time15 min to –25 °C14 min to 100 °C25 min to 100 °C
Size (HWD)290 x 185 x 295 mm290 x 185 x 295 mm290 x 185 x 295 mm
Weight8.2 kg7.3 kg7.7 kg
RTD inputs (process version)2-, 3-, 4-wire RTD (0 to 400 ohms)2-, 3-, 4-wire RTD (0 to 400 ohms)2-, 3-, 4-wire RTD (0 to 400 ohms)
TC inputs (process version)Type J, K, T, E, R, S, B, L, U, N, C, and mVType J, K, T, E, R, S, B, L, U, N, C, and mVType J, K, T, E, R, S, B, L, U, N, C, and mV
mA specs (process version)Range: 0-24 mA (24-28 VDC loop power)Range: 0-24 mA (24-28 VDC loop power)Range: 0-24 mA (24-28 VDC loop power)

Fluke 9142/9143/9144 dry block calibrators

  • Lightweight, fast and portable calibrators for field calibrations
  • Cools to -25 °C in 15 minutes and heats to 660 °C in 15 minutes
  • Process electronics with two-channel display for PRT, RTD, thermocouples, 4-20 mA current
  • Real reference temperature measurement with an accuracy of ±0.01 °C
  • Automated and documented calibration
  • Meets the highest demands in terms of accuracy, stability, homogeneity