SOP for Particle Counter

1.0 OBJECTIVE

To lay down a procedure for operation of the particle counter.

2.0 SCOPE

The procedure is applicable for operation of particle counter “Met one 3400”.

3.0 RESPONSIBILITY

Officer/ Executive - Quality Control

4.0 ACCOUNTABILITY

Manager - Quality Control

5.0 PROCEDURE

5.1 Logging in: Switch ON the main power, enter ‘Counter Navigation’ then enter ‘Factory’.
5.1.1 There are two methods to login, depending on whether the 3400 has first been turned on or if another user is already logged in.
• To log in after the Model 3400 is initialized, touch the screen. When password protection is enabled, users must log in to proceed.
• To login to the unit with another user already logged in, touch the Lock icon to log out the previous user, then touch the Lock icon again to login.
5.1.2 A login screen appears like the one. Touch the Name field to enter the username and a keyboard entry screen appears.
5.1.3 Enter the username by touching the screen.
5.1.4 When the name is entered, touch the Enter button on the screen.
5.1.5 Touch the Password field to invoke the keyboard screen and enter the password via the touchscreen.
5.1.6 Press Enter
5.1.7 If login is successful, the Main screen should appear, similar to the one. If the login is unsuccessful, a Login Failed message appears and the password should be re-entered.

5.2. Taking counts

Always remove the protective cap from the inlet tube before performing counts or damage to the counter will occur.
5.2.1 If still in place, remove the protective cap from the inlet tube (on top of counter).
5.2.2 Make sure the Main screen display ‘Counter Navigation’. Press ‘Sample’ on the screen.
5.2.3 To start counting particles, press the Run icon, on the touchscreen.
Particle counting begins.
• The Run icon becomes a Stop icon until the count is completed.
• The display indicates the counts and any other parameters measured.

Note: Count or environmental alarms will be indicated by red color and flashing text at the bottom of the touchscreen, as well as an audible alarm if one was set as described in “Sounds Tab”.
5.2.4 The count stops automatically. To manually stop counts, press the stop icon. When the count is complete, the total number of particles counted during the count time displays as well as the values for values for any other parameter measured (relative humidity, temperature, air velocity).
Refer to adjust the settings, such as alarm limits, units of measurements, and time and date.

6.0 ABBREVIATIONS

6.1 SOP - Standard Operating Procedure

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