All FAQs (1858 total: showing 1561-1580)
- Why does the AP200 require an ambient pressure measurement for the H2O span, but not for the zero or CO2 span?
- Why would CAL_TIMEOFFSET ever be set to a non-zero value?
- How long does it take for the reading to stabilize during an H2O span?
- The IRGA operates at reduced pressure in the AP200. Is it OK to do a zero/span at ambient pressure?
- If it is OK not to do an automated H2O span, is it OK not to do an automated CO2 span?
- Why is the AP200 not able to do an automated H2O span?
- Should the AP200 set the IRGA zero/span or just measure the zero/span?
- Do both zero and CO2 span have to be done, or can just a zero be done?
- How often should zero/span be performed on an AP200?
- What is required for zero and span, and what does it cost?
- How important is it to zero and span the IRGA?
- If the IRGA needs recalibration, should it be sent to Campbell Scientific?
- How often does the IRGA sample cell need to be cleaned?
- What maintenance does the IRGA require?
- If greater precision than what the LI-840A can provide is desired, can another analyzer, such as the LI-7000, be used instead?
- If water vapor measurements are not needed, can the LI-820 be used instead of an LI-840A?
- Can an LI-840 be used instead of an LI-840A?
- Can an already purchased LI-840A be used in an AP200? If so, what is necessary to install it and set it up?
- When the pump for the AP200 or CPEC200 wears out, can it be repaired, or does it need to be replaced?
- How long will the sample pump for the AP200 or CPEC200 last?
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