Fluke 9144-X Field Metrology Well

Fluke Calibration

Fluke Calibration authorised distributor.

Whether you need to calibrate 4-20 mA transmitters or a simple thermostatic switch, a Field Metrology Well is the right tool for the job.

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£ 3,809.50 rrp £ 4,010.00

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(£ 4,571.40 inc VAT.)

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Get the Process (-P) option for free when you buy this instrument! This promotion is valid till 31.12.2017.

With the -P (“process” option) there is no need to carry additional tools into the field. This built-in two-channel readout reads resistance, voltage, and 4–20 mA current with 24 volt loop power.

Promotion rules:

This offer cannot be combined with any other discount or promotions.
No cash returns will be made.
Fluke reserves the right to change the promotion at any time, without any prior notice.


NB. 'X' in the model number to be replaced with A, B, C, D, E, or F as appropriate for the desired insert. See the inserts illustration and listing on the datasheet.

The Fluke 9144-X Field Metrology Well extends high performance to the industrial process environment by maximising portability, speed, and functionality with little compromise to metrology performance. The “Process” version (“9144-X–P”) combines the heat source with a built-in readout eliminating the need for the technician to take two instruments to the field.

All Field Metrology Wells allow for two types of automated thermostatic switch test procedures—auto or manual setup. Auto setup requires the entry of only the nominal switch temperature. With this entry, it will run a 3-cycle calibration procedure and provide final results for the dead band temperature via the display. If you need to customise the ramp rate or run additional cycles, the manual setup allows you to program and run the procedure exactly how you would like. Both methods are fast and easy and make testing temperature switches


  • Temperature Range: 50 °C to 660 °C (122 °F to 1220 °F).
  • Lightweight, portable, and fast.
  • Cool to -25°C in 15 minutes and heat to 350°C in 15 minutes.
  • Built-in two-channel readout for PRT, RTD, thermocouple, 4-20 mA current.
  • True reference thermometry with accuracy to ±0.01°C.
  • On-board automation and documentation.

Fluke 9144-X
Base Unit Specifications
Temperature Range at 23 °C  50 °C to 660 °C (122 °F to 1220 °F)
Display Accuracy  ± 0.35 °C at 50 °C
± 0.35 °C at 420 °C
± 0.5 °C at 660 °C
Stability  ± 0.03 °C at 50 °C
± 0.04 °C at 420 °C
± 0.05 °C at 660 °C
Axial Uniformity at 40 mm (1.6 in) ± 0.05 °C at 50 °C
± 0.35 °C at 420 °C
± 0.5 °C at 660 °C
Radial Uniformity ± 0.02 °C at 50 °C
± 0.05 °C at 420 °C
± 0.10 °C at 660 °C
Loading Effect (with a 6.35 mm reference probe and three 6.35 mm probes)  ± 0.015 °C at 50 °C
± 0.025 °C at 420 °C
± 0.035 °C at 660 °C
Hysteresis  0.1
Operating Conditions  0 °C to 50 °C, 0 % to 90 % RH (non-condensing)
Environmental Conditions (for all specifications except temperature range)  13 °C to 33 °C
Immersion (Well) Depth  150 mm (5.9 in)
Insert OD  24.4 mm (0.96 in)
Heating Time  15 min: 50 °C to 660 °C
Resolution  0.01 °
Display LCD, °C or °F user-selectable
Dimensions 290 mm x 185 mm x 295 mm (11.4 x 7.3 x 11.6 in)
Weight  7.7 kg (17 lb)
Power Requirements 100 V to 115 V (± 10 %), 50/60 Hz, 1400 W 230 V (± 10 %), 50/60 Hz, 1800 W
Computer Interface RS-232 and 9930 Interface-it control software included
Calibration NVLAP accredited calibration included
Fluke 9144-X warranty 1 year

Includes: Fluke 9144, Well Insert, dependent upon model ordered, Power Cord, 9930 Interface IT Software, NIST Traceable Certificate of Calibration, User Manual.

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Fluke 9144-X Field Metrology Well