Bio-Science CI-900, Руководство по эксплуатации

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CI-900 Instruction Manual 8/10/2015
1554 NE 3
rd
Ave, Camas, WA 98607, USA Phone: (360) 833-8835
sales@ cid-inc .com www.cid-inc.com
39
soda lime and connecting it to the inlet. This will generate CO
2
free air, allowing
the instrument to set the zero as it would with the N
2
gas.
4. Once the N
2
gas or soda lime is connected, press Enter. The instrument will enter a
screen that reads “Internal Offset” and count down from 99.
5. When the offset is obtained, the instrument will pause and allow you to calibrate to
either the 20% range or 100% range. For example, if you need the instrument to read
50%, press “Save” to calibrate to the 100% range.
6. In the Setup Gas screen, connect the CO
2
(use a “T” connection to not over pressurize the
instrument) and change the value to 00050 %. Press “Save”.
7. The instrument will now set the internal gain and count down from about 46.
8. The final calibration values will then be displayed. Press “Save” to save the values,
completing the
calibration and returning to the
Calibration Menu.
If access to standardized CO
2
gas is limited, ambient air can be used to calibrate the CO
2
span.
Ambient air should only be used if a buffer tank system is implemented. The buffer tank system will
help stabilize fluctuations in CO
2
levels, providing an ambient air with approximately 400 ppm CO
2
(depending on proximity to urbanized areas).
Tips for Calibrating the CI-900 CO
2
Sensor with a buffer system:

The operator should stand away from the CI-900.

Use extra tubing to get the intake source away from human breath.

Use a buffer tank system to stabilize
the intake source.
CO
2
Span Buffer Tank System Instructions
Calibration Results
zero 0
span (600) 0000