Please reach out for an updated list of data on interfering gas. The data on this web page is for our legacy products and we are actively working on updating it. Reach out here.

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.

Detailed specifications on all instruments are available in the comprehensive catalog portion of this website.

AccuracyAnalog 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 Detectability1.0% of full scale
[Better on certain digital models]
Note that any data obtained at the level of minimum detectability will not be accurate.
Linearity±1.0% of full scale
Zero Drift±1.0% of full scale
Span DriftLess 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.
Lag TimeLess than 1 second
CalibrationAgainst standard gas mixture, or via INTERSCAN’s Electronic Calibration Service
Compliance with EC Directives on RoHS and WEEECompliant.   Refer to detailed information.
Operating temperature range4000 Series: 32°-120° F   (0-48.9° C)   ¦   LD and Multipoint models can be outfitted with thermostatic enclosures.