od roku 1992 Vám prinášame "riešenia na presné meranie."
  • sk
Kategórie

Hart Scientific 9210 - Mini TPW Maintenance Apparatus (–10 °C to 125 °C )

Hart Scientific 9210 - Mini TPW Maintenance Apparatus (–10 °C to 125 °C )

Cena: na požiadanie


Dostupnosť: na požiadanie


Poslať známemu


  • Easy preprogrammed realization
  • Inexpensive fixed-point solution
  • Training takes a few hours

If the reason you don’t use fixed-point cells is because they’re too expensive or too difficult to use, you haven’t heard of Hart’s mini fixed-point apparatus. 

The triple point of water (0.01 °C) is one of the most important temperatures on the ITS-90. Unfortunately, realizing and maintaining triple point of water cells hasn’t always been convenient or cost-effective. 

Because ITS-90 calibrations require frequent measurements at the triple point of water, and because the triple point of water is often used as a statistical check against the drift of a temperature standard, it is important to be able to realize and maintain well-constructed triple point of water cells easily. 

Hart’s 9210 TPW Maintenance Apparatus provides built-in programming for the simple supercool-and-shake realization and maintenance of our 5901B Mini TPW Cell. Simply insert the cell, enter the “freeze” mode through the front-panel buttons, have your morning cup of coffee, and when the 9210 audibly alerts you, remove the Mini TPW Cell and give it a shake to initiate freezing a portion of the water. Re-insert the cell, change the program mode to “maintain,” and you’ve got 0.01 °C for the rest of the day with uncertainty of only ±0.0005 °C. 

Precision-machined thermal blocks can also be used to take advantage of the excellent stability and uniformity of the 9210 for performing comparison calibrations. Multi-hole and custom blocks are available with 178 mm (7 in) depths. 

Specifications 

Temperature Range 

–10 °C to 125 °C 

Ambient Operating Range 

5 °C to 45 °C 

Stability 

±0.02 °C 

Vertical Gradient 

±0.05 °C over 100 mm at 0 °C 

Plateau Duration 

6–10 hours, typical 

Resolution 

0.01 ° (0.001 ° in program mode) 

Display Scale 

 °C or  °F, switchable 

Immersion Depth 

171 mm (6.75 in) in optional comparison block 

Stabilization Time 

15 minutes nominal 

Preheat Wells 

3 wells (for 3.18, 6.35, or 7.01 mm probes [0.125, 0.25, 0.276 in]) 

Fault Protection 

Adjustable software cutout using control probe; separate circuit thermocouple cutout for maximum instrument temperature 

Display Accuracy 

±0.25 °C 

Comparison Block 

Three multi-hole blocks, blanks, and custom blocks available 

Well-to-Well Gradient (in comparison block) 

±0.02 °C 

Heating Time 

Ambient to 100 °C: 45 min. 

Cooling Time 

Ambient to –5 °C: 25 min. 

Comm. 

RS-232 included 

Power Requirements 

115 VAC (±10 %), 60 Hz, 1.5 A, or
230 VAC (±10 %), 50 Hz, 0.75 A, 170 W 

Exterior Dimensions
(HxWxD) 

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

Weight 

7 kg (15.5 lb.) with block 

Ordering Information

9210 

Mini TPW Maintenance Apparatus 

5901B 

Mini TPW Cell 

1904-TPW 

Accredited Cell Intercomparison 

3110-1 

Comparison Insert, Blank 

3110-2 

Comparison Insert A, holes at 1.6 mm, 3.2 mm, 4.76 mm, 6.35 mm, 9.5 mm, and 12.7 mm (1/16, 1/8, 3/16, 1/4, 3/8, and 1/2 in) 

3110-3 

Comparison Insert B, 2 holes at 4.76 mm (3/16 in), 2 at 6.35 mm (1/4 in), and 2 at 9.5 mm (3/8 in) 

3110-4 

Comparison Insert C, 6 holes at  6.35 mm (1/4 in) 

 

Call for other comparison insert options. 





30 produktov v rovnakej kategórii:

Novinky a zmeny

séria 3300W zdrojov SM3300


najlepšie parametre výstupného prúdu