Specification parameters are defined per ANSI/ISA—51.1—1979 (R1993). Performance of a particular model may vary from these specifications, and may also be influenced by environmental factors. For further data, please consult the factory.
Accuracy:
Analog units: ±2.0% of full scale
Digital units: ±2.0% of reading, ±1 least significant digit
(Limited to accuracy of calibration standard)
Repeatability:
±0.5% of full scale
Minimum Detectability:
1.0% of full scale
Linearity:
±1.0% of full scale
Zero Drift:
±1.0% of full scale (24 hours)
Span Drift:
Less than ±2.0% of full scale (24 hours)
The zero and span drift specifications assume that the analyzer is equilibrated, and is at constant temperature, with a properly maintained sensor.
"Drift" is defined as an undesired change in output over a period of time, which change is unrelated to input, operating conditions, or load.