7103 Micro-Bath Thermometer Calibrators

Wherever you go with your Micro-Bath, you can count on its performance. Each model is stable to ±0.03 °C or better, depending on the fluid you use. Uniformity is ±0.02 °C or better for low uncertainties using a reference thermometer. Display accuracy has been improved to ±0.25 °C for quick calibrations without a reference thermometer. In short, you get the stability and precision of a liquid bath in a dry-well-sized package. Don’t be fooled by competitors who pour oil into a dry-well and call it a bath. Micro-Baths are maximized for true fluid-bath performance.

With a 48 mm (1.9-inch) diameter, 140 mm (5.5-inch) deep tank, a Micro-Bath can calibrate any type of sensor including short, square, or odd-shaped sensors. The problems of fit and immersion are virtually eliminated by using a fluid medium rather than a dry-block calibrator. Micro-Baths are perfect for liquid-in-glass and bimetal thermometers.

The Fluke 6102 has a temperature range from 35 °C to 200 °C, the Fluke 7102 covers –5 °C to 125 °C, and the Fluke 7103 extends from –30 °C to 125 °C. Stability, uniformity, and accuracy specifications cover the entire range for each bath, not just the best temperature.

All Micro-Baths have RS-232 ports, come with our Interface-it software, and can be used with MET/TEMP II software (described on page 81). Also included are contacts to calibrate a thermal switch, eight set-point memory storage, ramp-rate adjust, and over-temperature safety cutout.

You may have noticed we haven’t touted our CFC-free refrigeration. Yes, cold Micro-Baths are CFC-free, and also compressor-free. That’s right—no heavy, noisy compressor to lug around. We achieve our temperature range and stability with only one moving part. This means more durability and less weight. Fluke Calibration manufactures and sells temperature calibration baths of every size and shape, and now we have the smallest and lightest baths in the industry to go with the dozens of other models we make.

Look at the specs, price, and value of these portable instruments and you’ll know why Fluke Calibration is the number-one company in this business.

Portable and extremely stable

  • World’s smallest portable calibration baths
  • Calibrates sensors of any size or shape
  • Stability to ±0.015 °C
  • Ranges from –30 °C to 200 °C

Need portability and extreme stability? Fluke 6102, Fluke 7102, and Fluke 7103 Micro-Baths have both. We invented the Micro-Bath. And, while many have tried to duplicate it, none of them use proprietary Fluke Calibration controllers, so none of them deliver performance like a Fluke Calibration bath. Micro-Baths can be used anywhere for any type of sensor. The 6102 weighs less than 4.5 kg (10 lb.), with the fluid. It’s lighter and smaller than most dry-wells, has a spill-proof lid, and is easier to carry than your lunch. You can take it where you need to go without carts or excessive effort. Micro-Baths can even be transported with the fluid in them.

Model Name Description
6102 Micro-Bath, 35 °C to 200 °C
(includes a transport seal lid and a 2082-M test lid)
7102 Micro-Bath, –5 °C to 125 °C (includes a transport seal lid and a 2082-P test lid)
7103 Micro-Bath, –30 °C to 125 °C (includes a transport seal lid and a 2085 test lid)

Accessories common to all models:

Accessory Description
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.
3320 Spare Stir Bar, Micro-Bath
2082-M Spare test lid: 6102
2082-P Spare test lid: 7102
2083 Tank Extension Adapter
5010-1L Silicone Oil Type 200.05, 1 liter (0.26 gal)
2085 Spare test lid: 7103
5013-1L Silicone Oil, Type 200.20, 1 liter (0.26 gal)
9310 Carrying Case : 6102
9311 Carrying Case : 7102
9317 Carrying Case: 7103
5011-1L Mineral Oil, 1 liter (0.26 gal)
5012-1L Silicone Oil Type 200.10, 1 liter (0.26 gal)
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.
6102  7102  7103 
Range  35 °C to 200 °C
(95 °F to 392 °F)
–5 °C to 125 °C
(23 °F to 257 °F)
–30 °C to 125 °C
(–22 °F to 257 °F)
Accuracy  ± 0.25 °C
Stability  ± 0.02 °C at 100 °C
(oil 5013)
± 0.03 °C at 200 °C
(oil 5013)
± 0.015 °C at –5 °C
(oil 5010)
± 0.03 °C at 121 °C
(oil 5010)
± 0.03 °C at –25 °C
(oil 5010)
± 0.05 °C at 125 °C
(oil 5010)
Uniformity  ± 0.02 °C
Resolution  0.01 °C/°F
Operating Temperature  5 °C to 45 °C
Heating Time  25 °C to 200 °C:
40 minutes
25 °C to 100 °C:
30 minutes
25 °C to 100 °C:
35 minutes
Cooling Time  200 °C to 100 °C:
35 minutes
25 °C to 0 °C:
30 minutes
25 °C to –25 °C:
45 minutes
Well Size  64 mm dia. x 140 mm deep (2.5 x 5.5 in) (working area is 48 mm [1.9 in] in diameter)
Size (WxHxD)  14 x 26 x 20 cm
(5.5 x 10.38 x 8 in)
18 x 31 x 24 cm
(7.2 x 12 x 9.5 in)
23 x 34 x 26 cm
(9 x 13.2 x 10.5 in)
Weight  4.5 kg (10 lb) with fluid 6.8 kg (15 lb) with fluid 9.8 kg (22 lb) with fluid
Volume  0.75 L (1.6 pints) 0.75 L (1.6 pints) 1.0 L (2.11 pints)
Power  115 V ac (± 10 %), 2.3 A or 230 V ac (± 10 %), 1.1 A, switchable, 50/60 Hz,
270 W
115 V ac (± 10 %), 1.8 A or 230 V ac (± 10 %), 0.9 A, switchable, 50/60 Hz,
200 W
94–234 V ac (± 10 %), 50/60 Hz, 400 W
Computer Interface  RS-232 interface
NIST-Traceable Calibration  Data at 50 °C, 100 °C, 150 °C, and 200 °C Data at –5 °C, 25 °C, 55 °C, 90 °C, and 121 °C Data at –25 °C, 0 °C, 25 °C, 50 °C, 75 °C, 100 °C, and 125 °C
Commonly Used Fluids1  Water (distilled) Do not use Water 2 Water (distilled)
Mineral Oil Mineral Oil Mineral Oil
Silicone Oil Silicone Oil Silicone Oil
1 Refer to the Users Guide for information on selecting the right bath fluid for your application.
2 If the 7102 tank coating is damaged, corrosion will occur due to dissimilar metals in contact with water.