Met One Instruments 804 User manual

Model 804 Manual Page 1 804-9800 Rev E
Met One Instruments, Inc
Corporate Sales & Service: 1600 NW Washington Blvd. Grants Pass, OR 97526
Tel [phone] Fax [phone]
www.metone.com [e-mail]
MODEL 804
MANUAL

Model 804 Manual Page 2 804-9800 Rev E
Copyright Notice
Model 804 Manual
© Copyright 2007 Met One Instruments, Inc. All Rights Reserved Worldwide. No part of
this publication may be reproduced, transmitted, transcribed, stored in a retrieval
system, or translated into any other language in any form by any means without the
express written permission of Met One Instruments, Inc.
Technical Support
Should you require support, please consult your printed documentation to resolve your
problem. If you are still experiencing difficulty, you may contact a Technical Service
representative during normal business hours—7:00 a.m. to 4:00 p.m. Pacific Standard
Time, Monday through Friday.
Voice: [phone]
Fax: [phone]
E-Mail: [e-mail]
Mail: Technical Services Department
Met One Instruments, Inc.
1600 NW Washington Blvd.
Grants Pass, OR 97526
NOTICE
CAUTION—Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
WARNING—This product, when properly installed and operated, is
considered a Class I laser product. Class I products are not
considered to be hazardous.
There are no user serviceable parts located inside the cover of this device.
Do not attempt to remove the cover of this product. Failure to comply with this
instruction could cause accidental exposure to laser radiation.

Model 804 Manual Page 3 804-9800 Rev E
Table of Contents
1. Introduction........................................................................................................... 4
2. Setup...................................................................................................................... 4
2.1. Unpacking..................................................................................................................................4
2.2. Layout........................................................................................................................................6
2.3. Default Settings .........................................................................................................................6
2.4. Initial Operation..........................................................................................................................7
3. User Interface ........................................................................................................ 7
4. Operation............................................................................................................... 7
4.1. Power Up...................................................................................................................................7
4.2. Sample Screen..........................................................................................................................7
4.3. Sampling....................................................................................................................................9
5. Settings Menu........................................................................................................ 9
5.1. View Settings...........................................................................................................................10
5.2. Edit Settings.............................................................................................................................11
6. Serial Communications ...................................................................................... 13
6.1. Connection...............................................................................................................................13
6.2. Commands ..............................................................................................................................14
6.3. Real Time Output.....................................................................................................................15
6.4. Comma Separated Value (CSV) .............................................................................................15
7. Maintenance ........................................................................................................ 15
7.1. Charging the Battery................................................................................................................15
7.2. Service Schedule.....................................................................................................................16
7.3. Flash Upgrade.........................................................................................................................17
8. Troubleshooting.................................................................................................. 17
9. Specifications...................................................................................................... 18
10. Warranty / Service Information .......................................................................... 19

Model 804 Manual Page 4 804-9800 Rev E
1. Introduction
The Model 804 is a small lightweight four channel hand held particle counter. Key
features include:
Simple user interface with multifunction rotary dial (rotate and press)
8 hours continuous operation
4 count channels. All channels are user selectable to 1 of 7 preset sizes:
(0.3m, 0.5m, 0.7m, 1.0m, 2.5m, 5.0m and 10m)
Concentration and total count modes
2 favorite display sizes
Password protection for user settings
2. Setup
The following sections cover unpacking, layout and performing a test run to verify
operation.
2.1. Unpacking
When unpacking the 804 and accessories, inspect the carton for obvious damage. If
the carton is damaged notify the carrier. Unpack everything and make a visual
inspection of the contents. Standard items (included) are shown in Figure 1 –
Standard Accessories. Optional accessories are shown in Figure 2 –Optional
Accessories.
ATTENTION:
The included USB drivers must be installed before connecting the 804 USB port to your
computer. If the supplied drivers are not installed first, Windows may install generic
drivers that are not compatible with this product. See section 6.1.
To install USB drivers:
Insert the Comet CD. The install program should run automatically and display the
screen below. If an AutoPlay pop-up window appears, select “Run AutoRun.exe”.
Finally, select “USB Drivers” to start the install process.

Model 804 Manual Page 5 804-9800 Rev E
Figure 1 –Standard Accessories
Figure 2 –Optional Accessories
Model 804 Optional Accessories
Model 804 Standard Accessories
804
MOI P/N: 804
Battery Charger
MOI P/N: 390031
USB Cable
MOI P/N: 500787
804 Manual
MOI P/N 804-9800
Calibration
Certificate
MOI P/N:
804-9600
Comet Software
CD
MOI P/N: 80248
Carrying Case
MOI P/N: 8517
Boot
MOI P/N: 80450
Zero Filter Kit
MOI P/N: 80846
Flow Meter Kit
MOI P/N: 80530
Quick Guide
MOI P/N 804-9801
Power Cord
MOI P/N: 400113

Model 804 Manual Page 6 804-9800 Rev E
2.2. Layout
The following figure shows the layout of the Model 804 and provides a description of
the components.
Figure 3 –804 Layout
Component
Description
Display
2X16 character LCD display
Keyboard
2 key membrane keypad
Rotary dial
Multifunction dial (rotate and press)
Charger Jack
Input jack for external battery charger. This jack charges the internal
batteries and provides continuous operating power for the unit.
Flow Adjust
Adjusts the sample flow rate
Inlet Nozzle
Sample nozzle
USB Port
USB communication port
2.3. Default Settings
The 804 comes with the user settings configured as follows.
Parameter
Value
Sizes
0.3, 0.5, 5.0, 10 m
Favorite 1
0.3m
Favorite 2
OFF
Sample Location
1
Sample Mode
Manual
Sample Time
60 seconds
Count Units
CF
USB Port
Display
Charger Jack
Inlet Nozzle
Keyboard
Rotary Dial
Flow Adjust

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2.4. Initial Operation
The battery should be charged for 2.5 hours prior to use. Refer to Section 7.1 of this
manual for batter charging information.
Complete the following steps to verify proper operation.
1. Press the Power key for 0.5 seconds or more to turn on power.
2. Observe the Startup screen for 3 seconds then the Sample screen (Section 4.2)
3. Press Start / Stop key. The 804 will sample for 1 minute and stop.
4. Observe the counts on the display
5. Rotate the Select dial to view other sizes
6. The unit is ready for use
3. User Interface
The 804 user interface is composed of a rotary dial, 2 button keypad and a LCD
display. The keypad and rotary dial are described in the following table.
4. Operation
The following sections cover the basic operation of Model 804.
4.1. Power Up
Press the Power key to power up the 804. The first screen shown is the Startup Screen
(Figure 4). The Startup Screen displays the product type and company website for
approximately 3 seconds before loading the Sample Screen.
Model 804
WWW.METONE.COM
Figure 4 –Startup Screen
4.1.1. Auto Power Off
The 804 will power down after 5 minutes to preserve battery power providing the unit is
stopped (not counting) and there is no keyboard activity or serial communications.
4.2. Sample Screen
The Sample Screen displays sizes, counts, count units, and time remaining. The time
remaining is displayed during sample events. The Sample Screen is shown in Figure 5
below.
Control
Description
Power Key
Power the unit on or off. For power on, press for 0.5 seconds or more.
Start / Stop Key
Sample Screen
START / STOP a sample event
Settings Menu
Return to Sample screen
Edit Settings
Cancel edit mode and return to the Settings Menu
Select Dial
Rotate the dial to scroll through selections or change values. Press the dial
to select item or value.

Model 804 Manual Page 8 804-9800 Rev E
0.3u 2,889 CF
0.5u 997 60
Figure 5 –Sample Screen
Channel 1 (0.3) or Favorite 1 (see Section 4.2.1) are displayed on Sample Screen
Line 1. Rotate the Select dial to display channels 2-4 and battery status on line 2
(Figure 6).
0.3u 2,889 CF
BATTERY = 100%
Figure 6 –Battery Status
4.2.1. Favorites
Use Favorites in the Settings Menu to select one or two favorite display sizes. This
eliminates the need to scroll the display when monitoring two non-adjacent sizes. You
can view or change Favorites in the Settings menu (Section 5).
4.2.2. Warnings / Errors
The 804 has internal diagnostics to monitor critical functions such as low battery,
system noise and an optical engine failure. Warnings / errors are displayed on Sample
Screen Line 2. When this occurs, simply rotate the Select dial to view any size on the
top line.
A low battery warning occurs when there is approximately 15 minutes of sampling
remaining before the unit stops sampling. A low battery condition is shown in Figure 7
below.
0.5u 6,735 CF
Low Battery!
Figure 7 –Low Battery
Excessive system noise can result in false counts and reduced accuracy. The 804
automatically monitors system noise and displays a warning when the noise level is
high. The primary cause of this condition is contamination in the optical engine. Figure
7 shows the Sample screen with a System Noise warning.
0.5u 6,735 CF
System Noise!
Figure 8 –System Noise
A sensor error is reported when the 804 detects a failure in the optical sensor. Figure 9
shows a sensor error.
0.5u 6,735 CF
Sensor Error!
Figure 9 –Sensor Error
Count Units (Section 4.3.3)
Time Remaining

Model 804 Manual Page 9 804-9800 Rev E
4.3. Sampling
The following sub-sections cover sample related functions.
4.3.1. Starting/Stopping
Press the START/STOP key to start or stop a sample from the Sample Screen.
Depending on the sample mode, the unit will either run a single sample or continuous
samples. Sample modes are discussed in Section 4.3.2.
4.3.2. Sample Mode
The sample mode controls single or continuous sampling. The Manual setting
configures the unit for a single sample. The Continuous setting configures the unit for
nonstop sampling.
4.3.3. Count Units
The 804 supports total counts (TC), particles per cubic foot (CF) and particles per liter
(/L). Concentration values (CF, /L) are time dependent. These values may fluctuate
early in the sample; however, after several seconds the measurement will stabilize.
Longer samples (e.g. 60 seconds) will improve concentration measurement accuracy.
4.3.4. Sample Time
Sample time determines the sample duration. Sample time is user settable from 3 to 60
seconds and is discussed in Sample Timing below.
4.3.5. Sample Timing
The following figures depict the sample timing sequence for both manual and
continuous sampling. Figure 10 shows the timing for manual sample mode. Figure 11
shows the timing for continuous sample mode. The Start section includes a 3 second
purge time.
Start Stop
Sample Time
Figure 10 –Manual Sample Mode
Start Stop
Sample Time
Sample Time
//
Figure 11 –Continuous Sample Mode
5. Settings Menu
Use the Settings Menu to view or change configuration options.

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5.1. View Settings
Press the Select dial to navigate to the Settings Menu. Rotate the Select dial to scroll
through the settings in the following table. To return to the Sample screen, press
Start/Stop or wait 7 seconds.
The Settings menu contains the following items.
Function
Description
LOCATION
Assign a unique number to a location or area. Range = 1 - 999
SIZES
The 804 has four (4) programmable count channels. The operator
can assign one of seven preset sizes to each count channel.
Standard sizes: 0.3, 0.5, 0.7, 1.0, 2.5, 5.0, 10.
FAVORITES
This feature eliminates the need to scroll the display when
monitoring two non-adjacent sizes. See Section 4.2.1.
MODE
Manual or Continuous. The Manual setting configures the unit for a
single sample. The Continuous setting configures the unit for
nonstop sampling.
COUNT UNITS
Total Count (TC), Particles / cubic foot (CF), particles / L (/L).
See Section 4.3.3.
HISTORY
Display previous samples. See Section 5.1.1
SAMPLE TIME
See Section 4.3.4. Range = 3 - 60 seconds
TIME
Display / enter time. Time format is HH:MM:SS
(HH = Hours, MM = Minutes, SS = Seconds).
DATE
Display / enter date. Date format is DD/MMM/YYY
(DD = Day, MMM = Month, YYYY = Year)
FREE
MEMORY
Display the percentage of memory space which is available for data
storage. When Free Memory = 0%, the oldest data will be
overwritten with new data.
PASSWORD
Enter a four (4) digit numeric number to prevent unauthorized
changes to the user settings.
ABOUT
Display model number and firmware version
5.1.1. View Sample History
Press the Select dial to navigate to the Settings Menu. Rotate the Select dial to the
History selection. Follow the steps below to view sample history. To return to the
Settings Menu, press Start/Stop or wait 7 seconds.
Press to View
HISTORY
Press Select to view history.