6050H Extremely High Temperature Calibration Salt Bath

Fluke Calibration metrology baths are well known world-wide for excellent temperature control that maintains excellent temperature stability and uniformity


Designed for high-temperature calibration – up to 550 °C

  • Eliminates messy sand baths
  • Electronically adjustable temperature cutouts
  • Stability of ±0.008 °C at 550 °C

Find a salt bath for calibration at extremely high temperatures (550 °C). Fluke Calibration metrology baths are well known world-wide for excellent temperature control that maintains excellent temperature stability (±0.002 °C) and uniformity (±0.005 °C).

You’ll find more Fluke Calibration baths in national labs than any other brand, and there’s a reason for that. No one else can match the stability, uniformity, and performance of a Fluke Calibration bath, and we absolutely guarantee it.


This model is designed for high-temperature work—up to 550 °C. Most labs use this as a salt bath for calibration of thermocouples, RTDs, and SPRTs. In fact, this bath is so good you can even do comparison calibrations of SPRTs with it. The bath is stable to ±0.005 °C or better at 300 °C.

Fluke Calibration is the only company that offers complete automated calibration software packages that work with the bath interface option. Our optional software is not just a data acquisition package; it actually controls the calibration, including bath temperatures.

Choose the model that most closely matches your needs. These baths are compatible with salt for higher temperatures and also with oils for lower temperatures.

Fluke sells a complete selection of salt and fluids for your bath. You can find these here. Salt baths offer better performance and less mess than sand baths. SPRT comparison calibrations in a sand bath aren’t reliable the way they are in a Fluke Calibration salt bath.

All options, including the automation interface package, are available for the 6050H. It is the finest-quality salt bath you can buy!

If you need to reach the maximum temperature possible in a salt bath, the Fluke Calibration 6050H goes to 550 °C and is 10 to 100 times more stable than alternative calibration devices.

It is 305 mm (12 in) deep and has a 127 x 254 mm (5 x 10 in) well opening for easy access. Ports in the rear of the bath access cooling coils if you want to cool the bath rapidly with external fluids.




Range 180 °C to 550 °C
Stability ±0.002 °C at 200 °C (salt)
±0.004 °C at 300 °C (salt)
±0.008 °C at 550 °C (salt)
Uniformity ±0.005 °C at 200 °C (salt)
±0.020 °C at 550 °C (salt)
Temperature Setting Digital display with push-button data entry
Set-Point Resolution 0.01 °C; high-resolution mode, 0.00018 °C
Display Temperature Resolution 0.01 °C
Digital Setting Accuracy ±1 °C
Digital Setting Repeatability ±0.02 °C
Heaters 400, 1200, and 2000 Watts
Access Opening 127 x 254 mm (5 x 10 in)
Depth 305 mm (12")
Wetted Parts 304 stainless steel
Power 230 VAC (±10 %), 50/60 Hz, 10 A
Volume 27 liters (7.1 gal), requires 50 kg (112 lb) of bath salt
Weight 82 kg (180 lb.)
Size (HxWxD) 724 x 518 x 622 mm
(28.5 x 20.4 x 24.5 in)
Automation Package Interface-it software and RS-232 computer interface are available for setting bath temperature via remote computer. For IEEE-488, add the 2001-IEEE to the automation package.



Model Name


6050H Standard Bath, 60 °C to 550 °C (includes cart)
5001 Bath Salt, 125 lb (fills a 30 liter [7.9 gal] tank)

Accessories common to all models:



2014 Spare Access Cover (6050H)
2023 Fast-Start Heater, 419 mm (16.5 in)
2196 Holding Fixture, 13 probes, 127 x 254 mm (5 x 10 in)
2069 8X Magnifier Scope, with mounts
2001-IEEE IEEE-488 Interface
SC1-SHBA Silver Care Plan, 1-yr Extended Warranty, Standard Hot Baths
SC2-SHBA Silver Care Plan, 2-yr Extended Warranty, Standard Hot Baths
SC4-SHBA Silver Care Plan, 4-yr Extended Warranty, Standard Hot Baths


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