9103, 9140 Dry-Well Calibrators & Dry Block Calibrators




Product Description

9103, 9140 Dry-Well Calibrators & Dry Block Calibrators

These two units beat every other comparable dry block calibrator in the industry in performance, size, weight, convenience, ease of calibration, software, and price. In addition, the heating and cooling rate of each of these dry-well calibrators is adjustable from the front panel, thermal switches can be checked for actuation testing, and multiple-hole inserts are available for a variety of probe sizes.

Fluke Calibration dry wells are easy to calibrate. You don’t even have to open the case. This means less maintenance costs and less down time when a dry well does need calibration.

Every dry block calibrator we ship is tested at our factory, and every unit comes with a NIST-traceable calibration. There’s no extra charge for the report, because we consider it an essential ingredient in our quality program. You shouldn’t have to pay extra for calibration procedures we perform anyway.


The 9103 covers below-ambient temperatures as low as –25 °C. The 9103 is stable to ±0.02 °C, and its display is calibrated to an accuracy of ±0.25 °C at all temperatures within its range. In just eight minutes, 0 °C is reached, and 100 °C is reached in six minutes, so your time is spent calibrating—not waiting.

The 9103 reaches temperatures 50 °C below ambient, so –25 °C is reached under normal ambient conditions. Our competitors like to advertise their units as reaching –45 °C when they really mean –45 °C below ambient, which typically means it will go to –20 °C. Our unit does not require you to work in a walk-in freezer to achieve its full advertised range.

field-dry well-blocks

Choose one of three removable inserts sized for probes from 1/16 inch to 1/2 inch in diameter. Insert A handles a full range of probe sizes with a single well of each size. Insert B features two wells each of 3/8, 1/4, and 3/16 inches in diameter for doing comparison calibrations. Insert C has six 1/4-inch-diameter wells for multiple probe calibrations, and Insert D has three pairs of metric sized wells.


The 9140 has a temperature range of 35 °C to 350 °C, and it reaches its maximum temperature in 12 minutes. At six pounds, it’s small enough to easily carry in one hand. It’s truly a unique innovation in dry-wells.

The unit has a stability of ±0.05 °C or better and a uniformity of at least 0.4 °C in the largest-diameter wells and 0.1 °C in the smaller wells. Despite its small size, this unit performs.

Use the display, calibrated to ±0.5 °C, as your reference, or use an external thermometer for maximum calibration accuracy. With three removable inserts to choose from, the 9140 is as versatile as it is fast.


Great performance in portable instruments

  • Lightweight and very portable
  • Accuracy to ±0.25 °C
  • RS-232 interface
  • Easy to recalibrate

If you’ve been using a dry well calibrator or dry block calibrator for field work, you know there’s a lot more to them than temperature range and stability. Size, weight, speed, convenience, and software are also significant.

A field dry well needs to be portable, flexible, and suitable for high-volume calibrations or certifications. If it’s not, you’ll soon forget about the great stuff the sales rep told you and realize what you’ve really bought.

At Fluke Calibration, we use dry well calibrators every day in our manufacturing and calibration work, and we know what makes a dry well easy and productive to use—which is exactly how users describe our series of field dry wells. These dry wells work for you instead of the other way around.



  9103 9140
Range  –25 °C to 140 °C
(–13 °F to 284 °F)
at 23 °C ambient 
35 °C to 350 °C
(95 °F to 662 °F) 
Accuracy  ± 0.25 °C (holes greater than 1/4″ [6.35 mm]: ± 1 °C)  ± 0.5 °C (holes greater than 1/4″ [6.35 mm]: ± 1 °C) 
Stability  ± 0.02 °C at –25 °C
± 0.04 °C at 140 °C 
± 0.03 °C at 50 °C
± 0.05 °C at 350 °C 
Well-to-Well Uniformity  ± 0.1 °C between similarly sized wells  ± 0.1 °C with similarly sized wells 
Heating Times  18 minutes from ambient to 140 °C  12 minutes from ambient to 350 °C 
Cooling Times  20 minutes from ambient to –25 °C  15 minutes from 350 °C to 100 °C 
Stabilization Time  7 minutes 
Immersion Depth  124 mm (4.875″) 
Inserts  Insert A, B, C, or D included (specify when ordering) 
Outside Insert Dimensions  31.8 mm dia. x 124 mm (1.25 x 4.88 in) 
Computer Interface  RS-232 interface
Power  115 V ac (± 10 %), 1.3 A or 230 V ac (± 10 %), 0.7 A, switchable, 50/60 Hz, 150 W  115 V ac (± 10 %), 4.4 A or 230 V ac (± 10 %), 2.2 A, switchable, 50/60 Hz, 500 W 
Size (WxHxD)  143 x 261 x 245 mm
(5.63 x 10.25 x 9.63 in) 
152 x 86 x 197 mm
(6 x 3.375 x 7.75 in) 
Weight  5.7 kg (12 lb)  2.7 kg (6 lb) 
NIST-Traceable Certificate  Data at –25 °C, 0 °C, 25 °C, 50 °C, 75 °C, 100 °C, and 140 °  Data at 50 °C, 100 °C, 150 °C, 200 °C, 250 °C, 300 °C, and 350 °C 

Models and Accessories

Model Name Description
9103-X Dry-Well (specify X, X = A, B, C, or D included insert)
9140-X Dry-Well (specify X, X = A, B, C, or D included insert)

Accessories common to all models  :

Accessory Description
3103-1 Insert, Blank no holes, 9011/9103
3103-2 Insert, “A” w/ misc holes, 9011/9103


3103-3 Insert, “B” w/ cmprsn hls, 9011/9103
3103-4 Insert, “C” w/ 6 .25″ holes, 9011/9103
3103-6 Insert, “D”, 9011/9103
3140-1 Insert, 9140 no holes – Blank, ring
3140-2 Insert, 9140 “A” w/ misc holes, ring


3140-3 Insert, 9140 “B” w/ cmprsn hls, ring


3140-4 Insert, 9140 “C” w/ 6 0.25″ holes, ring


3140-6 Insert, 9140 “D” w/ misc holes, ring
9316 Rugged Carrying Case : 9103
9308 Rugged Carrying Case : 9102, 9132, 9140
HART DRYWELL CABLE An interface cable kit that includes a null modem to connect the Fluke 754 with Fluke Calibration dry-wells and Micro-Baths to automate and document the calibration of temperature sensors and transmitters in the field or at the bench.
Priority Gold Instrument CarePlan Fluke Calibration Priority Gold Instrument CarePlans are available for most calibration products. Please contact your local Fluke Calibration sales representative for details or to request a quote.
Silver CarePlan Fluke Calibration Silver CarePlans are available for most calibration products. Please contact your local Fluke Calibration sales representative for details or to request a quote.

About us

บริษัท เมสเชอร์เมนท์เอเชีย จำกัด
Measurementasia Co.,Ltd.

99 Moo. 3, Khlong 5, Khlong Luang,
Pathumthani 12120



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