Verify Instrument Operation; Purge The Instrument - Hach HHPC 6+ Manual Del Usuario

Verify instrument operation

Electrical noise, sensor leakage or other interference can cause the
instrument to give incorrect data. To make sure the instrument operates
correctly:
1. Attach the Zero-Count Filter.
2. In the Data Display Setup screen, select the 0.3 µm channel and set
the Concentration mode to COUNTS.
3. In the Sample Setup screen, set the sample time to 5 minutes, the
hold time to 00:00:00, the delay time to 00:00:03, the MODE to
Automatic and the number of CYCLES to 2.
4. Start the Product sampling and let it complete the 2 x 5 minute
samples.
5. Examine the particle counts in the last sample. Counts must align
with these specifications for instrument operation to be verified: No
more than 1 particle > 0.3 µm in 5 minutes.

Purge the instrument

Remove unwanted materials from the instrument before it is used in a
clean-room or clean manufacturing environment. Also do this procedure
after each high sampling count to help keep the internal sensor clean.
1. Install the zero count filter.
2. Set the instrument to sample continuously. Set the Count Mode to
Rate.
3. Start the count process. Continue the count process until there are
no new counts.
4. Remove the zero count filter for normal operation.
Sample setup
Refer to the help screen for more information.
Change the settings for how the instrument runs a sampling process in
the Sample Setup menu. Sub-menus include options for Location,
Alarms and Data display setups. To update or change the Sample Setup
settings:
1. Push the Menu button.
2. Navigate to the Sample Setup icon, then push the Select key.
3. Change the settings for the options. Default values are shown in
parentheses.
Option Description
Method (Time): The instrument gets a sample for the amount of time in the
Time field.
Volume: The instrument gets a sample equal to the value in the
Volume field.
Time The instrument gets a sample for the amount of time that is put in
this field. Range: 00:00:01 to 23:59:59 (00:01:00). In the Time
based sampling method, this value plus the hold time equals one
cycle.
Volume The instrument gets a sample equal to the volume put in this field.
In the Volume based sampling method, this value plus the hold
time equals one cycle and the sample time remaining is an
estimated value.
Hold The amount of time between samples. Range: (00:00:00) to
23:59:59.
Delay The period of time before the first sample starts after the Start key
is pushed. Range: (00:00:03) to 23:59:59
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