Type	Data source
266HSH	Product Data Sheet DS/266HSH/NSH-EN Rev. H 2014
266NSH	Product Data Sheet DS/266HSH/NSH-EN Rev. H 2014
266GST	Product Data Sheet DS/266GST/AST-EN Rev. F 032021
266AST	Product Data Sheet DS/266GST/AST-EN Rev. F 032021

Reference Accuracy U(ac)

266HSH

Range	Low Turndown	High Turndown
G to Q	For spans less than 10:1 ± 0.06% of calibrated span	For spans greater than 10:1
E, S & V	For spans less than 10:1 ± 0.075% of calibrated span	For spans greater than 10:1
Z	For spans less than 5:1 ± 0.15% of calibrated span	For spans greater than 5:1

266NSH

Range	Low Turndown	High Turndown
G to S	For spans less than 10:1 ± 0.075% of calibrated span	For spans greater than 10:1

266GST

Range	Low Turndown	High Turndown
C to V	For spans less than 10:1 ± 0.04% of calibrated span High Accuracy option ± 0.025% of calibrated span	For spans greater than 10:1
L to R	For spans less than 10:1 High Accuracy option ± 0.025% of calibrated span

266AST

Range	Low Turndown	High Turndown
G to S	For spans less than 10:1 ± 0.04% of calibrated span	For spans greater than 10:1

 

Drift (stability) U(d)

266HSH & 266NSH

Ranges E to V	± 0.15% of URL for 10 years
Range Z	± 0.45% of URL for 3 years

266GST & 266AST

All Ranges	± 0.15% of URL for 10 years

Power supply effect U(ps)

266HSH & 266NSH

± 0.001% of URL per volt change.

266GST & 266AST

± 0.005% of URL per volt change.

Ambient temperature effect U(ac)

Per 20K change

266HSH

Range	For turndown up to 10:1
G to Q	±(0.03% URL + 0.045% Span)
E, S & V	±(0.04% URL + 0.065% Span)
Z	±(0.06% URL + 0.1% Span)

266NSH

Range	For turndown up to 10:1
G to Q	±(0.06% URL + 0.09% Span)
S	±(0.08% URL + 0.13% Span)

 

266GST & 266AST

Range	For turndown up to 10:1
C and F	±(0.06% URL + 0.09% Span)
L to V	±(0.03% URL + 0.045% Span)

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