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Temperature Calculators

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Visit other Fluke companies for calibration equipment and services in electrical, power, pressure, flow, RF, and more.

Link to Fluke Calibration for electrical and power calibration

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Link to DH Instruments for pressure and flow calibration

DH Instruments

  

Deep-Well Baths - Models 7007, 6054 and 6055

Deepwell

Features

  • Constant liquid levels through concentric-tube design
  • Special design for sighting LIG thermometers
  • Depth up to 60 cm (24 in)
  • Optional interface packages control all settings

Specifications 

7007  6054  6055 

Range 

–5 °C to 110 °C 

50 °C to 300 °C 

200 °C to 550 °C 

Stability 

±0.001 °C at 0 °C
 (ethanol)
±0.003 °C at 100 °C
(oil 5012) 

±0.003 °C at 100 °C
(oil 5012)
±0.005 °C at 300 °C
(oil 5017) 

±0.003 °C at 200 °C
(salt)
±0.01 °C at 550 °C
(salt) 

Uniformity 

±0.004 °C at 0 °C
(ethanol)
±0.007 °C at 100 °C
(oil 5012) 

±0.007 °C at 100 °C (oil 5012)
±0.015 °C at 300 °C (oil 5017) 

±0.005 °C at 200 °C
(salt)
±0.010 °C at 550 °C
(salt) 

Temperature Setting 

Digital display with push-button data entry 

Set-Point Resolution 

0.002 °C, high res. 0.00003 °C 

0.01 °C, high res. 0.00018 °C 

Display Temperature Resolution 

0.01 °C 

Digital Setting Accuracy 

±1 °C 

Digital Setting Repeatability 

±0.005 °C 

±0.01 °C 

Heaters 

250 to 1000 W 

250 to 1000 W 

225 to 1800 W 

Working Area 

178 mm dia. (7 in) 

196 mm dia. (7.7 in) 

107 mm dia. (4.2 in) 

Depth 

610 mm (24 in) deep, 178 mm dia.
(7 in), removable polycarbonate cover 

610 mm deep (24 in), 196 mm dia. (7.7 in), removable SST lid 

432 mm deep (17 in), 107 mm dia. (4.2 in), removable SST lid, special viewing channel for LIG sighting 

Wetted Parts 

304 stainless steel 

Power 

230 VAC (±10 %), 50 or 60 Hz, 14 A
(Specify frequency, contact Hart if CE mark required.) 

230 VAC (±10 %), 50/60 Hz, 10.7 A 

230 VAC (±10 %), 50/60 Hz, 7.8 A 

Volume 

42 liters (11.2 gal.) 

50 liters (13.2 gal.) 

19.8 liters
(5.2 gal., 43 kg [95 lb.] of bath salt) 

Size (DxWxH) 

470 x 775 x 194 mm to working surface (18.5 x 30.5 x 47 in),
1397 mm (55 in) to top of stir motor, 914 mm (36 in) to control panel 

572 x 762 x 1219 mm to working surface (22.5 x 30 x 48 in), 1422 mm (56 in) to top of stir motor box, 914 mm (36 in) to control panel 

572 x 775 x 1219 mm to working surface (22.5 x 30.5 x 48 in), 1524 mm (60 in) to top of stir motor box, 914 mm (36 in) to control panel 

Distance from Line of Sight to Top of Fluid 

9.5 mm (3/8 in) 

15.9 mm (5/8 in) 

Automation Package 

Interface-it software and RS-232 computer interface are included for setting bath temperature via remote computer. For IEEE-488, add the 2001-IEEE. 

The Hart Models 7007, 6054, and 6055 have extra-deep wells for use with liquid-in-glass thermometers, SPRT calibrations, or other thermometry work requiring extra tank depth. They were originally designed for NIST. 

Well depths vary from 17 to 24 inches to eliminate stem conduction effects in probes that require more than 12 inches of immersion. Originally developed for a national standards lab, these baths are optimized for the visual calibration of liquid-in-glass thermometers. 

The 7007 is designed for the temperature range of –5 °C to 110 °C, has built-in refrigeration, and is 24 inches deep. The 6054 covers the temperature range of 50 °C to 300 °C and is also 24 inches deep. The 6055 is engineered for the temperature range of 200 °C to 550 °C with salt and is 17 inches deep. Specific size differences and various specifications are shown in the comparison table. 

The Model 6055, operating up to 550 °C, uses molten salts with a pumping system for maintaining the necessary consistent fluid level required for liquid-in-glass thermometer calibrations. A viewing channel is built into the top cover for a clear visual path to your glass thermometers. 

Thermometer CarouselThe 6055 also has an optional thermometer carousel for holding several glass thermometers in the correct calibration position without exposing them to the hot salts in the bath. The Model 2018 Carousel is completely constructed of stainless steel and has an elevated handle for rotating your thermometers to the viewing position. 

These deep-well baths are built to the same performance standards as all Hart baths, which means you can’t find another bath that has better stability or uniformity. 

Don’t forget to ask about Hart’s 9938 automation software.

Hart sells a complete selection of salt and fluids for your bath. You can find these here.

Ordering Information 

7007 

Refrigerated Deep-Well Bath 

6054 

Mid-Range Deep-Well Bath 

6055 

Hi-Temp Deep-Well Bath 

2001-IEEE 

IEEE-488

2018 

Carousel Holding Fixture for 6055 

2069 

LIG Telescope with Mounting, 8X magnification 

 

Downloads

Right click one of the following links and “Save Target As ...” to download the catalog pages/data sheet or a product User's Guide in Acrobat (.pdf)  format.

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