5960A Triple Point Of Argon System Data Sheet Brochure

User Manual: 5960A-Triple-Point-of-Argon-System-Data-Sheet-Brochure

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Technical Data
Breakthrough primary temperature
standards capability
The Fluke Calibration 5960A Triple Point of Argon System enables
primary standards laboratories to realize the argon triple point
using a consistent, reproducible process with the lowest uncer-
tainty of any commercially available system. The Fluke Calibration
system produces a 30-hour temperature plateau and provides
multiple entrant wells to increase SPRT calibration efficiency and
throughput.
• Low uncertainty of 0.25 mK
• Temperature plateau duration longer than 30 hours
• Four entrant wells with radial uniformity less than 0.05 mK
• 480 mm total immersion depth
• Argon purity of 99.9999 %
• Multi-language display support
5960A
Triple Point of Argon System
in the system, the plateau length can even be
extended to four days. The system’s long, stable
temperature plateau lets you carry out your
SPRT calibrations with better quality and more
efficiency. Four entrant wells increase lab pro-
ductivity by allowing you to calibrate four SPRTs
simultaneously.
Low calibration uncertainty
A number of technology advancements are
designed into the Fluke Calibration 5960A
system to achieve a low uncertainty of 0.25 mK.
For example, the argon cell is carefully built
with an ultra-clean process using 99.9999 %
(six nines) purity argon resulting in an uncer-
tainty factor from impurities of 0.015 mK. The
deep, 480 mm immersion depth of the entrant
well minimizes the effects of stem conduction to
less than 0.01 mK and radial uniformity to less
than 0.05 mK.
High lab throughput
The 5960A system utilizes liquid nitrogen (LN2)
in a Dewar vessel surrounding an argon cell
to achieve –189.3442 °C. A digital controller
combined with a heater maintains a tempera-
ture plateau lasting up to 30 hours with 0.1 mK
variation without using complicated pressure
controls. By regular renewal of liquid nitrogen
2 Fluke Calibration 5960A Triple Point of Argon System
Ease of operation and maintenance
The display panel of the 5960A provides a simple menu structure
with soft function keys for setup and programming the argon
system. The readout displays simultaneously the set-point tem-
perature, actual control sensor temperature and percent heater
power. The display is selectable in eight languages—English,
French, Spanish, Italian, German, Russian, Chinese, and Japanese.
Applying positive pressure with helium or dry nitrogen to an
entrant well port prevents your SPRTs from being bound in the
entrant well by freezing moisture. You can insert and remove
SPRTs as desired from the system over the duration of a single
plateau. Other systems require that you first melt the cell in order
to add or remove an SPRT.
5960A Triple Point of Argon System specifications
Assigned value -189.3442 °C
Argon gas purity 99.9999 % (6N purity)
Uncertainty (k=2) 0.25 mK
Length of plateau (0.1 mK) >30 hours
Argon cell depth 160 mm
Total immersion depth 480 mm
Number of entrant wells 4
Radial uniformity 0.05 mK
Entrant well inner diameter (ID) 8.0 mm
Argon gas volume 13.4 moles (535 grams)
Liquid nitrogen Dewar volume 44.2 liters
Display resolution 0.001 °C
Set-point accuracy 0.1 °C (adjustable)
Power requirements 100 V to 115 V (± 10 %) 50/60 Hz, 230 W
230 V (± 10 %) 50/60 Hz, 230 W
System fuse ratings 115 V: 2 A T 250 V / 230 V: 1 A T 250 V
Size (HxWxD) 952 mm x 673 mm x 483 mm (37.5 in x 26.5 in x 19 in)
Weight 94 kg (207 lb)
*Measured from the bottom of the probe well to the surface of argon sample
Ordering information
Model
5960A
Triple Point of Argon System
Accessories
5960ACC-PUMP/DEWAR
Pump and Dewar Accessory Kit includes
Rotary Vane Vacuum Pump, Self-
Pressurized Liquid Nitrogen Dewar
(50 liters), Hoses, Fittings, and Associated
Hardware
5960ACC-PUMP
Pump Accessory Kit includes Rotary Vane
Vacuum Pump, Hose, and Associated
Hardware
5960ACC-DEWAR
Dewar Kit includes Self-Pressurized Liquid
Nitrogen Dewar (50 liters), Hoses, Fittings,
and Associated Hardware
Fluke Calibration
PO Box 9090,
Everett, WA 98206 U.S.A.
Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands
Web access: http://www.flukecal.eu
For more information call:
In the U.S.A. (877) 355-3225 or Fax (425) 446-5716
In Europe/M-East/Africa +31 (0) 40 2675 200 or Fax +31 (0) 40 2675 222
In Canada (800)-36-FLUKE or Fax (905) 890-6866
From other countries +1 (425) 446-6110 or Fax +1 (425) 446-5716
Web access: http://www.flukecal.com
©2012, 2017 Fluke Calibration. Specifications subject to change without notice.
Printed in U.S.A. 6/2017 4226831b-en
Modification of this document is not permitted without written permission
from Fluke Calibration.
Fluke Calibration. Precision, performance, confidence.™
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