ACOEM Met One Instruments GAS-1060, User Manual

Page: 97 / 164

Calibration Page 97
Figure 45 – Multipoint Calibration Results Example
4. The following is a guide to approximate expected good results for 0-400 ppb.
a. The gradient (m) falls between 0.98 and 1.02.
b. The intercept (b) lies between -2 and +2.
c. The correlation (R
2
) is greater than 0.99.
If unsatisfactory results are observed, please refer to Section 7 - troubleshooting.
5.8 High Pressure Zero/Span Valve
If the instrument was ordered with this option, the internal pressurised calibration valves will already
be installed within the instrument as either a zero or span calibration source, thus no other internal
connections need to be made.
Note: Before using a high pressure span or zero as a source for calibrating the instrument, please
check the local regulatory requirements. This is generally only be used as an operational check of the
instrument’s zero point and single span point (recommended as 80 % of full scale).