Metrológia teploty

Hart Scientific 9230 - Gallium Cell Maintenance Apparatus (15 °C to 35 °C )

Hart Scientific 9230 - Gallium Cell Maintenance Apparatus (15 °C to 35 °C )

  • One week plateau duration
  • No hassle automatic realizations
  • Used daily in our Primary Lab

More details

Dostupnosť: Na objednávku

The gallium melting point (29.7646 °C) is a critical temperature. Thermometers used in life science, environmental monitoring, and many other applications depend on it for accurate calibrations. Lab standards rely on it as an ITS-90 check standard and as a means of measuring drift between calibrations. Hart Scientific now makes it easy to use. 

The new 9230 Gallium Maintenance System works with Hart’s Model 5943 Stainless Steel Gallium Cell to provide melting plateaus that last a week, with results approaching what can be achieved in a Hart maintnance bath. Not a day. Not a day-and-a-half. One week. 

The Model 5943 Stainless Steel Gallium Cell holds a gallium sample that is 99.99999+ % pure. The gallium is sealed in a Teflon envelope in a high purity argon atmosphere, which is itself sealed inside a stainless steel housing. This double-sealing method reduces leaching into the gallium sample and ensures a life of ten years or longer for the cell. 


Temperature Range 

15 °C to 35 °C 

Ambient Operating Range 

18 °C to 28 °C 


±0.02 °C 

Vertical Gradient 

< 0.03 °C over six inches during cell maintenance 

Plateau Duration 

Five days, typical 


0.01 ° (0.001 ° in program mode) 

Display Scale 

 °C or  °F, switchable 

Immersion Depth 

220 mm (8.75 in) in gallium cell 

Stabilization Time 


Preheat Wells 

Fault Protection 

Heating/cooling rate cutout 

Display Accuracy 

±0.05 °C at 29.76 °C 

Comparison Block 

Contact Hart 

Well-to-Well Gradient (in comparison block)


Heating Time 


Cooling Time 



RS-232 included 

Power Requirements 

115 VAC (±10 %), 60 Hz, 1.0 A, or
230 VAC (±10 %), 50 Hz, 0.65 A, 175 W 

Exterior Dimensions

489 x 222 x 260 mm
(19.25 x 8.75 x 10.25 in) 


8.2 kg (18 lb.) without cell 

Ordering Information 


Gallium Cell Maintenance Apparatus 


Stainless Steel Gallium Cell 


Accredited Cell Intercomparison 


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