Met One Instruments BT-610 User manual

BT-610-9800 Rev C
Met One Instruments, Inc
Corporate Sales & Service: 1600 NW Washington Blvd. Grants Pass, OR 97526
Tel [phone] Fax [phone]
www.metone.com [e-mail]
BT-610
MANUAL

Page 1 BT-610-9800 Rev C
Copyright Notice
BT-610 Manual
© Copyright 2012 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.

Page 2 BT-610-9800 Rev C
Table of Contents
1. Introduction........................................................................................................... 4
2. Setup...................................................................................................................... 4
2.1. Unpacking..................................................................................................................................4
2.2. Layout........................................................................................................................................8
2.3. Default Settings .......................................................................................................................10
2.4. Initial Operation........................................................................................................................10
3. User Interface ...................................................................................................... 11
4. Operation............................................................................................................. 11
4.1. Power Up.................................................................................................................................11
4.2. Printer Operation .....................................................................................................................12
4.3. Operate Screen .......................................................................................................................13
4.3.1. Favorites............................................................................................................................13
4.3.2. Sampling ...........................................................................................................................14
4.3.3. Sample Status...................................................................................................................14
4.3.4. Sample History..................................................................................................................14
4.3.5. Warnings / Errors..............................................................................................................15
4.4. Sample Related Functions.......................................................................................................15
4.4.1. Starting/Stopping...............................................................................................................15
4.4.2. Real-Time Output..............................................................................................................15
4.4.3. Sample Mode....................................................................................................................15
4.4.4. Sample Time.....................................................................................................................15
4.4.5. Hold Time..........................................................................................................................15
4.4.6. Sample Timing..................................................................................................................16
5. Main Menu............................................................................................................ 16
5.1. Edit Main Menu Items..............................................................................................................17
5.2. Sample Setup Screen..............................................................................................................17
5.2.1. Location Number...............................................................................................................17
5.2.2. Sample Time.....................................................................................................................17
5.2.3. Hold Time..........................................................................................................................17
5.2.4. Samples ............................................................................................................................18
5.3. Settings Screen .......................................................................................................................18
5.3.1. Count Units........................................................................................................................18
5.3.2. Temperature......................................................................................................................18
5.4. Serial Screen...........................................................................................................................18
5.4.1. Report Type.......................................................................................................................19
5.4.2. Baud Rate .........................................................................................................................19
5.4.3. Serial Output Mode ...........................................................................................................19
5.5. Printer Screen..........................................................................................................................19
5.5.1. Printer................................................................................................................................19
5.6. Favorites Screen......................................................................................................................20
5.6.1. Favorites Mode (ON/OFF) ................................................................................................20
5.6.2. Favorites Sizes (SIZE) ......................................................................................................20
5.6.3. Favorites Alarm Limits (ALARM).......................................................................................20

Page 3 BT-610-9800 Rev C
5.6.4. Favorites Analog Output Scaling (A-SCALE)....................................................................20
5.7. Calibrate Flow Screen .............................................................................................................21
5.8. Set Sizes Screen .....................................................................................................................21
5.9. Set Clock Screen.....................................................................................................................21
5.10. Set Contrast Screen ................................................................................................................22
5.11. About Screen...........................................................................................................................22
6. Data Menu............................................................................................................ 22
6.1. Copy to USB Drive...................................................................................................................23
6.2. Recall Data..............................................................................................................................23
6.3. Printing Sample Data...............................................................................................................24
6.4. Memory Screen .......................................................................................................................25
6.4.1. View Available Memory.....................................................................................................25
6.4.2. Clearing memory...............................................................................................................25
7. Charging the Battery........................................................................................... 25
8. Serial Communications ...................................................................................... 26
8.1. Commands ..............................................................................................................................26
8.1.1. Computer Mode ................................................................................................................26
8.1.2. User Mode.........................................................................................................................27
8.2. Real Time Output.....................................................................................................................27
8.3. Comma Separated Value (CSV) .............................................................................................28
8.4. Printer Style .............................................................................................................................29
8.5. RS485 Networking...................................................................................................................29
9. Maintenance ........................................................................................................ 30
9.1. Service Schedule.....................................................................................................................30
9.1.1. Zero Count Test................................................................................................................31
9.1.2. Flow Rate Test..................................................................................................................31
9.1.3. Annual Calibration.............................................................................................................31
9.2. Flash Upgrade.........................................................................................................................31
10. Troubleshooting.................................................................................................. 32
11. Specifications...................................................................................................... 33
12. Warranty / Service............................................................................................... 34

Page 4 BT-610-9800 Rev C
1. Introduction
The BT-610 is a portable airborne particle counter with a small stable footprint. This
allows you to move it around and set it down rather than holding it in your hand while
sampling. The large character backlit LCD display provides easy viewing from distances
exceeding 3 meters.
Other key features include:
6 particle sizes (Defaults: 0.3, 0.5, 1.0, 2.0, 5.0 and 10 m)
User size settings (0.1m steps from 0.3 to 2m, 0.5m steps from 2 to 10m)
2 Favorite sizes (including count alarm limits and analog output)
Copy data to USB memory stick
On Board Printer
Serial communications (USB, RS232, RS485)
Internal battery pack for portable operation (8 hours continuous)
2. Setup
The following sections cover unpacking, layout and performing a test run to verify
operation.
2.1. Unpacking
When unpacking the BT-610 and accessories, inspect the carton for obvious damage. If
the carton is damaged notify the carrier. Unpack and inspect the contents of the
shipping container.
The BT-610 is shipped with the standard items shown in Figure 1. Contact the supplier
if any items are missing. Figure 2 shows optional equipment which can be purchased
separately.
ATTENTION:
The included USB drivers must be installed before connecting the BT-610 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.
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.

Page 5 BT-610-9800 Rev C
Figure 1 –Standard Equipment
BT-610
Battery Charger
MOI P/N: 80643
Iso-Kinetic Inlet
MOI P/N: G3110
Zero Filter
MOI P/N: G3111
USB Cable
MOI P/N: 500784
Manual
MOI P/N: BT-610-
9800
Calibration
Certificate
MOI P/N: BT-610-
9600
Comet Software
CD
MOI P/N: 80248
Particle View
Software CD
Printer Paper
MOI P/N: 750514

Page 6 BT-610-9800 Rev C
Figure 2 –Optional Equipment
BT-610 Optional Equipment
Temperature & Humidity Probe
MOI P/N: G3120
DwyerTM Ball Flow Meter
MOI P/N: 9801
Serial Cable
MOI P/N: 550065

Page 8 BT-610-9800 Rev C
2.2. Layout
Figure 3 shows the layout of the BT-610 and the following table provides a description
of the components.
Keyboard
Display
Temp/RH
Connector
Inlet Nozzle
Carrying
Handle
Printer

Page 9 BT-610-9800 Rev C
Figure 3 –BT-610 Layout
Power Switch
Charger Jack
USB for Data
Transfer
(on side)
RS-232 USB I/O RS 485 Analog Out

Page 10 BT-610-9800 Rev C
Component
Description
Display
4X20 character LCD display (backlit)
Keyboard
8 key membrane keypad
Printer
On Board thermal printer
Power Switch
Switch that turns the BT-610 on or off (up for on).
Charger Jack
Input jack for the battery charger. This jack charges the internal
battery pack and provides continuous operating power for the unit.
Inlet Nozzle
Ambient air inlet nozzle. Connect isokinetic probe to reduce
turbulence in the air sample.
T/RH Connector
Mating connector for the optional external Temperature/RH sensor.
USB I/O
USB communication port
USB Drive
Export sample data to USB memory stick
RS-232 Serial Port
Connection used for serial communication
RS-485 Serial Port
Connection used for long distances (4,000 feet) or multi-drop (32
units)
Analog out
Two analog output channels (0-5V = 0 –FS Counts). FS (Full Scale) is
settable from 0 to 9,999,999 counts.
2.3. Default Settings
The BT-610 comes with the user settings configured as follows.
Parameter
Value
Sample Location
1
Sample Mode
Single
Sample Time
60 seconds
Sample Hold Time
0 seconds
Count Units
CF
Temperature Units
C
Baud Rate
9600
Serial Output
RS-232
2.4. Initial Operation
Before operating the BT-610 for the first time, it is recommended that the unit be fully
charged. Information regarding battery charging is found in Section 7. Complete the
following steps to verify proper operation.
1. Press the top of the power switch to turn on power.
2. Observe the Startup Screen for 2 seconds then the Operate Screen (Section 4.2)
3. Press Start / Stop key. The BT-610 will sample for 1 minute and stop.
4. Observe the counts on the display
5. Use the up / down arrows to view other sizes
6. The unit is ready for use.

Page 11 BT-610-9800 Rev C
3. User Interface
The BT-610 user interface is composed of an 8 button keypad and a LCD display. The
following table describes keypad functionality.
Note: Some keys have more than one function.
Key
Description
Starts or stops a sample (Operate or Main Menu Screen).
Starts USB data transfer (Copy to USB Drive Screen).
Starts printing data (Print Data Screen).
Recalls the selected data (Recall Data Screen).
Loads the Data Menu Screen.
Loads the Main Menu Screen.
Loads the Operate Screen when in the Main Menu Screen.
Cancel editing. Returns the field to the original value before editing began.
Loads the screen associated with menu item.
View history when Operate Screen is displayed.
Stops editing a field and saves the changed value.
Navigates up / down when not editing.
Modifies field when editing.
Navigates left / right
4. Operation
The following sections cover the basic operation.
4.1. Power Up
The BT-610 power is controlled by a switch located on the back of the unit. To power
up the unit move the switch to the on position (up).
The first screen shown on power up is the Startup Screen (Figure 4). This screen
displays the product type and company website for approximately 2 seconds before
loading the Operate Screen.
BT-610
WWW.METONE.COM
Figure 4 –Startup Screen
▼
►
START
STOP
DATA
MENU
ESC
ENTER
▲
◄

Page 12 BT-610-9800 Rev C
4.2. Printer Operation
Figure 5 –Open Printer Door
If there is no paper loaded in the printer, the indicator light on the bottom right of the
printer will glow orange. To load paper into the printer, lift the printer door latch from the
center until the door opens.
Figure 6 –Install Paper and Close Printer Door
Place a roll of paper in the printer bay with the free end up and coming from the back of
the roll. Close the printer door and the green indicator light should light. Press the
white button on printer to manually advance the paper. See Section 5.5 for Printer
Operation.
Paper
Advance

Page 13 BT-610-9800 Rev C
4.3. Operate Screen
The Operate Screen displays the date/time, sample status, current sample data and
previous sample data. Figure 7 shows the Operate Screen.
15 AUG’10 11:23 L001
0.3µ 0 CF
0.5µ 0 CF
0.7µ 0 CF
1.0µ 0 CF
2.0µ 0CF
5.0µ 0 CF
Figure 7 –Operate Screen
The top line of the Operate Screen is reserved for the normal header (date, time and
location) or status/alarm messages depending upon the machine status. The top line
remains stationary while the other 3 lines scroll to display the full list. Temp/RH data
will follow the count data when the RH/Temp probe is connected.
The Operate Screen normally displays 6 particle sizes; however, the BT-610 also offers
a Favorites mode which configures the unit to display and print any two of the six
standard sizes (see Section 4.3.1).
Particle counts units are user selectable. The selections include: Total counts (TC),
particles per liter (/L), particles per cubic foot (CF) and particles per cubic meter (M3).
Ambient temperature can be displayed in units of Celsius (C) or Fahrenheit (F). Both
unit settings are discussed in Section 5.2.4.
4.3.1.Favorites
The Favorites setting eliminates the need to scroll the display when monitoring two non-
adjacent sizes (see Section 5.4). The Favorites setting configures the display and
printer for two sizes however the BT-610 still counts and buffers all six particle sizes.
Sample data for all six channels is available via the serial port (Section 8) or by viewing
count history on the display (Section 4.3.4). Figure 8 shows the Favorites Operate
Screen with RH/Temp probe attached.
18 AUG’06 11:23 L001
0.3µ 0 CF
5.0µ 0 CF
Temp 24C RH 40 %
Figure 8 –Favorites Operate Screen w/ RH/Temp

Page 14 BT-610-9800 Rev C
4.3.2.Sampling
The Operate Screen displays current sample information when the unit is sampling (real
time data). Concentration values (/L, CF, M3) are time dependent so 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. Figure 9 shows the Operate Screen while sampling with RH/Temp probe
attached.
COUNTING… 58 L001
0.3µ29,780 CF
0.5µ1,400 CF
TEMP 24C RH 40%
Figure 9 –Operate Screen (Sampling)
4.3.3.Sample Status
The top line of the Operate Screen displays the status of the BT-610 while the unit is
sampling. The following table shows the various status messages and their meaning:
Status
Description
STARTING…
Starting the sample and waiting for the count system to initialize.
COUNTING… 58
BT-610 is sampling. The time remaining is displayed to the far right.
HOLDING…10
BT-610 is in auto mode and is waiting for the hold time to finish. The
time remaining is displayed to the far right.
4.3.4.Sample History
Sample history (previous data) can be viewed on the Operate Screen when the unit is
stopped (not sampling). To view sample history, press the Enter key from the Operate
Screen. The unit will display the last sample event (newest record) and display “” on
the right side of the display (see Figure 10) to indicate history data. Press ◄ or ► to
move through sample history one record at a time (◄displays older events, ►displays
newer events). Press the Enter key at any time to return to the Operate Screen. Press
Start at any time to start a new sample.
Sample history will display 2 channels in Favorites mode. To view other channels,
change favorite sizes or disable Favorites mode (Section 5.4) before you view history.
15 AUG’10 11:23 L001
0.3µ 0 CF 
0.5µ 0 CF 
0.7µ 0 CF 
Figure 10 –History Screen

Page 15 BT-610-9800 Rev C
4.3.5. Warnings / Errors
The BT-610 displays warning/error messages on the top line of the Operate Screen.
These messages alternate with the normal date/time header. The following table lists
the warning/error messages:
Display Message
Description
<COUNT ALARM>
Count alarm. The count is >= the alarm limit.
LOW BATTERY!
Low battery warning. Less than 15 minutes of normal operation
remaining. Recharge the battery
FLOW ERROR!
The sample flow rate is not within +/- 10% of the nominal 0.1 CFM
flow rate.
SENSOR ERROR!
Particle sensor error.
4.4. Sample Related Functions
The following sub-sections cover BT-610 sample related functions.
4.4.1.Starting/Stopping
To start or stop a sample, press the START/STOP key. A sample event can be
manually started or stopped from either the Operate Screen or the main menu.
4.4.2.Real-Time Output
BT-610 provides real-time output on the serial port at the end of each sample. The
format of the output is controlled by the Serial Output setting (Section 5.4).
4.4.3.Sample Mode
The sample mode controls single sample or continuous sampling. The SINGLE setting
configures the unit for a single sample. The REPEAT setting configures the unit for
continuous sampling. Entering a number of samples will cause the BT-610 to collect
that number of samples and then stop sampling.
4.4.4.Sample Time
The sample time determines the amount of time that counts are accumulated. The
length of the sample is user settable from 1 –9999 seconds and is discussed in section
5.2.2.
4.4.5. Hold Time
The hold time is used when the sample mode is set to repeat (continuous sample). The
hold time represents the time from the completion of the last sample to the start of the
next sample. The hold time is user settable from 0 –9999 seconds and is discussed in
section 5.2.3.

Page 16 BT-610-9800 Rev C
4.4.6.Sample Timing
The following figures depict the sample timing sequence for both single and repeat
sampling modes. Figure 11 shows the timing for single sample mode. Figure 12 shows
the timing for repeat sample mode.
Start
Time Sample Time Stop
Time
Figure 11 –Single Mode Sample
Start
Time Sample Time Hold Time Sample Time Stop Time
Figure 12 –Repeat Mode Sample
5. Main Menu
The Main Menu is accessible by pressing the menu key on the Operate Screen. The
table below shows the Main Menu items. Press ▲ or ▼ to navigate to a menu item
then press Enter to display a screen where you can view or change item setting(s).
SAMPLE SETUP
SETTINGS
SERIAL
PRINTER
FAVORITES
SET SIZES
CALIBRATE FLOW
SET CLOCK
SET CONTRAST
ABOUT
Figure 13 –BT-610 Main Menu
Menu Item
Description
Press Enter to navigate to…
SAMPLE SETUP
View / change location number, auto / single
mode, sample time and hold time.
Sample Setup Screen
SETTINGS
View / change volume (count units) and
temperature units ºC / ºF.
Settings Screen
SERIAL
View / change Serial Report type, Baud Rate
and serial mode.
Serial Screen
PRINTER
View / change Printer enable setting
Printer Screen
FAVORITES
Set count alarm limits for 2 particle sizes
Count Alarm Screen
SET SIZES
Set particle sizes
Set Sizes Screen
CALIBRATE FLOW
Calibrate the sample flow rate
Flow Screen

Page 17 BT-610-9800 Rev C
SET CLOCK
Set the date and time.
Set Clock Screen
SET CONTRAST
Adjust the display contrast.
Set Contrast Screen
ABOUT
Display firmware version and serial number.
About Screen
5.1. Edit Main Menu Items
To change settings, press Menu to display the Main Menu, press ▲ or ▼ to navigate to
the desired item and press Enter to display the item view/edit screen.
To edit pick list items (e.g. Sample Setup –Single/Repeat), press ▲ or ▼ to navigate to
the item. Press Enter to select the item. Press ▲ or ▼ to change the setting. Press
ENTER to save the setting or ESC to cancel and return to the original value.
To edit numeric values (e.g. Count Alarms - Alarm Limit), press ▲ or ▼ to navigate to
the item. Press Enter to select the item. Press ▲ or ▼ to increment or decrement a
value. Press ◄ or ► to select the next digit. Press ENTER to save the value or ESC
to cancel and return to the original value.
5.2. Sample Setup Screen
Figure 14 shows the Sample Setup Screen. The 4 parameters are covered in the
following sections.
LOCATION: 001
SAMPLE TIME: 0060
HOLD TIME: 0000
SAMPLES: SINGLE
Figure 14 –Sample Setup Screen
5.2.1.Location Number
The location number is used to assign a unique number to a location or area. This
important field is included in sample data records (display, printer and serial output).
5.2.2.Sample Time
The sample time determines the amount of time that counts are accumulated while the
pump is running. The length of the sample is user settable from 1 –9999 seconds.
5.2.3. Hold Time
The Hold time is the time between samples when sampling in Repeat mode
(continuous) or when sampling a given number of samples. The Hold time is user
settable from 0 –9999 seconds. The pump will remain on during the hold period if the
Hold time is 60 seconds or less. The pump will stop after each sample, and start a few
seconds before the next sample, if the Hold time is greater than 60 seconds. Hold
times greater than 60 seconds will increase pump life.

Page 18 BT-610-9800 Rev C
5.2.4. Samples
The samples setting controls the number of samples to take as illustrated below.
Selection
Description
REPEAT
Repeat configures the unit for continuous sampling.
SINGLE
Single configures the unit for a single sample.
002-9999
Configures the unit to take N samples.
5.3. Settings Screen
Figure 15 shows the Settings Screen. The 4 parameters are covered in the sections
immediately following.
COUNT UNITS: CF
TEMPERATURE: C
Figure 15 –Settings Screen
5.3.1.Count Units
The BT-610 supports total counts (TC), particles per liter (/L), particles per cubic foot
(CF) and particles per cubic meter (M3). Particle count information updates while the
unit is sampling. Concentration values (/L, CF, M3) are time dependent so 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.
5.3.2.Temperature
The BT-610 displays temperature in Celsius (C) or Fahrenheit (F).
5.4. Serial Screen
Figure 16 –Serial Screen shows the Serial Screen. The 3 parameters are covered in
the sections immediately following.
REPORT: CSV
BAUD RATE: 9600
SERIAL OUT: RS-232
Figure 16 –Serial Screen

Page 19 BT-610-9800 Rev C
5.4.1.Report Type
The Report setting determines the output format for the Serial Port. The choices are
NONE, CSV and PRINTER.
When set to NONE, the unit will not automatically output the reading at the end of a
sample to the Serial Port. CSV is a Comma Separated Values output format suitable
for importing into a spreadsheet. PRINTER is the same format as the screen and panel
mounted printer.
This setting does not affect the panel mounted printer which always prints in PRINTER
format.
5.4.2.Baud Rate
Use the Baud Rate selection to set the serial communications baud rate. BT-610
communicates at baud rates from 300 –38400.
5.4.3.Serial Output Mode
The Serial Out setting controls the behavior of the BT-610 serial output. The modes
are RS232, RS485, Printer or Network (see Section 7 for serial communication
protocol). The following table lists the Serial Output settings and describes their
meanings.
Serial Out Setting
Description
RS232
RS232/USB communication.
RS485
RS485 communication.
NETWORK
RS485 communication with all serial output suppressed unless
specifically addressed.
5.5. Printer Screen
Figure 17 shows the Printer Screen.
PRINTER: ENABLE
Figure 17 –Printer Screen
5.5.1.Printer
The Printer setting selects whether to ENABLE or DISABLE the panel mounted printer
for automatic output at the end of each sample. The panel mounted printer always
prints in Printer format regardless of the Serial Output format specified.

Page 20 BT-610-9800 Rev C
5.6. Favorites Screen
The Favorites mode eliminates the need to scroll the display when monitoring two non-
adjacent sizes. The Favorites mode also provides count alarm limits and analog output
scaling for the Favorites (2 count channels). The Favorites mode controls the display
(real time and history) and printer format. The CSV serial output includes all 6 sizes.
Figure 18 –Favorites shows the Favorites screen.
FAVORITES ON
SIZE ALARM A-SCALE
0.3 0500000 0500000
5.0 0500000 0500000
Figure 18 –Favorites
5.6.1.Favorites Mode (ON/OFF)
Enables or disables Favorites mode (On = Enabled, Off = Disabled).
5.6.2.Favorites Sizes (SIZE)
Select 2 of the 6 standard sizes. Favorite 1 is 0.3 m in Figure 18 (above).
5.6.3.Favorites Alarm Limits (ALARM)
Favorites count alarm limit. A zero (0) value disables the count alarm. The alarm is
active when the count is equal to or greater than the alarm limit. The maximum alarm
limit value is 9,999,999.
Alarm values do not change with the count units setting (TC, /L, CF, M3). In other
words, a value of 1,000 will alarm at 1,000 counts or 1,000 particles per cubic foot or
1,000 particles per liter depending on the count unit setting.
5.6.4.Favorites Analog Output Scaling (A-SCALE)
Favorites analog output scaling (0 –5 volts = 0 –VALUE). The maximum scale value is
9,999,999. A zero (0) value will configure the analog output for a digital or binary alarm
(0 volts = normal, 5 volts = alarm). The alarm limit for this binary mode is configured in
Section 5.6.3 above.
Figure 19 shows the analog output connector pin assignments. GND pins are signal
ground. A1 and A2 are Analog Output 1 and Analog Output 2 which are associated to
Favorite 1 and Favorite 2 respectively (see Section 5.6.2).
GND
A2
GND
A1
Figure 19 –Analog Output Connector