Environnement AF22e, Technical Manual, Page: 36 / 118

Environnement
S.A
AF22e
Duplication prohibited
APRIL 2016
3–2
3.4.2.12. Automatic linearization of the flow 3–36
3.4.2.13. Airproof test 3–37
3.4.2.14. Potentiometer setting 3–37
3.5. CALIBRATION 3–38
3.5.1. OVERVIEW OF CALIBRATION AND CONCEPTS 3–38
3.5.1.1. Zero air generation 3–39
3.5.1.2. Span gas generation (SO
2
) 3–40
3.5.1.3. Internal solenoid valves 3–40
3.5.2. ZERO AND SPAN POINT CHECK 3–41
3.5.2.1. Equipment Required 3–41
3.5.2.2. Procedure 3–41
3.5.2.3. Use of automatic cycles 3–41
3.5.3. TWO-POINT CALIBRATION 3–43
3.5.3.1. Equipment required 3–43
3.5.3.2. Procedure 3–43
3.5.4. MULTI-POINT CALIBRATION 3–44
3.5.4.1. Overview 3–44
3.5.4.2. Equipment Required 3–44
3.5.4.3. Procedure 3–45
Figure 3–1 – Fluid and electrical connections 3–3
Figure 3–2 – Installation of the sample gas inlet 3–4
Figure 3–3 – Example of a pressurized gas connection 3–39
Figure 3–4 – Typical calibration device diagram 3–44