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Home >> Products >> Ion Counter >> Highly Accurate >> Highly Accurate Air Ion Counter (Bi-Polar Type) COM-3800 [Discontinued] >> How to Operate >> Zero Adjustment

Zero Adjustment

Zero adjustment is required for accurate air ion measurement. Fig.1 shows the buttons.

Please follow the instructions below to perform zero adjustment. It is easy to adjust!
 1. Close the cover
[Please note] Perform zero adjustment at least 15 minutes after the counter is turned on. This is because the semiconductor devices, which handle low electric current, have to be stabilized to perform accurate zero adjustment.

Close the cover of the air suction opening to prevent low electronic current from flowing into the electrode(s). This ensures accurate zero adjustment.
 2. Perform zero adjustment
Push the for 2 or more seconds to change to the zero adjustment mode.

30 seconds are counted down to stabilize. (Fig.3)
The zero point is displayed after the (30 second) countdown.

When the reading stabilizes at or near 0, push the " and then to complete the zero adjustment.

Fig.4 shows both the negative and positive ion zero points are adjusted.

The zero point reverts to the initial status if you push the " during adjustment.
Ion measurement
Contents - Highly Accurate Air Ion Counter (Bi-Polar Type) COM-3800 [Discontinued] (More about this product)
COM-3800 Top
Part Names
How to Operate
Zero Adjustment
Ion measurement
Built-in memory
Print
Software
Measurement Examples
#1 Air Tamer (Ion Generator)
#2 Air Purifier A-500
#3 Ion House (Ion Generator)
#4 No negative ion generation
Specifications
Functions
View of the COM-3800
Q & A
Payment options
Inquiry

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Highly Accurate Air Ion Counter (Bi-Polar Type) COM-3800 [Discontinued]
Product Number:COM-3800
Product Name:Highly Accurate Air Ion Counter (Bi-Polar Type) COM-3800 [Discontinued]
List Price:US$20001.36
Price:US$15001.02 & FREE Shipping
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20381.8219982.7162038.9521131.1711423.2513245.93117747.39
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Marketing Manager: Masaharu Nemoto
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