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Summary of Contents for Met One Instruments BT-620
- Page 1 BT-620 ANUAL Met One Regional Service Instruments, Inc 3206 Main St. Suite 106 1600 Washington Blvd. Rowlett, Texas 75088 Grants Pass, Oregon 97526 Telephone 972-412-4715 Telephone 541-471-7111 Facsimile 972-412-4716 Facsimile 541-471-7116 BT-620-9800 Rev B...
- Page 2 Copyright Notice BT-620 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.
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Page 3: Table Of Contents
Printer ..........................19 4.6. Favorites Screen ........................19 4.6.1. Favorites Mode (ON/OFF) ....................19 4.6.2. Favorites Sizes (SIZE) ...................... 19 4.6.3. Favorites Alarm Limits (ALARM) ..................19 4.6.4. Favorites Analog Output Scaling (A-SCALE) ..............19 BT-620 Manual Page 2 BT-620-9800 Rev B... - Page 4 7.4. Printer Style ..........................29 7.5. RS485 Networking ........................29 7.6. Ethernet Port Setup and Configuration ..................30 7.6.1. Setting the Static IP Address of the BT-620: ..............30 7.6.2. Installing the Virtual Serial Port Drivers: ................31 7.6.3. Configuring the Virtual Com Port for the BT-620: ............. 33 Maintenance ......................
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Page 5: Setup
Introduction The BT-620 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. - Page 6 PN: 81754 PN: 81752 Manual Battery Charger Particle View Software CD PN: BT-620-9800 PN: 81751 Calibration USB Cable Comet Software Certificate PN: 500784 PN: 80248 Printer Paper PN: 750514 Figure 1 – Standard Equipment BT-620 Manual Page 5 BT-620-9800 Rev B...
- Page 7 BT-620 Optional Equipment Temperature & Humidity Probe PN: G3120 Serial Cable Flow Meter PN: 81755 PN: 550065 Replacement Battery Pack Battery Charger Cable PN: 81769 PN: 81770 Figure 2 – Optional Equipment BT-620 Manual Page 6 BT-620-9800 Rev B...
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Page 8: Layout
1.2. Layout Figure 3 shows the layout of the BT-620 and the following table provides a description of the components. Carrying Handle Inlet Nozzle Temp/RH Connector Display Keyboard Printer USB Flash Drive BT-620 Manual Page 7 BT-620-9800 Rev B... - Page 9 Charger Jack Power Switch RS-232 USB I/O RS 485 Analog Out Ethernet Figure 3 – BT-620 Layout BT-620 Manual Page 8 BT-620-9800 Rev B...
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Page 10: Default Settings
RS-232 1.4. Initial Operation Before operating the BT-620 for the first time, it is recommended that the unit be fully charged. Information regarding battery charging is found in Section 6. Complete the following steps to verify proper operation. 1. Press the top of the power switch to turn on power. -
Page 11: User Interface
3.1. Power Up The BT-620 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. -
Page 12: Printer Operation
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 4.4.4 for Printer Operation. BT-620 Manual Page 11 BT-620-9800 Rev B... -
Page 13: Operate Screen
(see Section 4.4). The Favorites setting configures the display and printer for two sizes however the BT-620 still counts and buffers all six particle sizes. Sample data for all six channels is available via the serial port (Section 7) or by viewing count history on the display (Section 3.3.4). -
Page 14: Sampling
24C RH Figure 9 – Operate Screen (Sampling) 3.3.3. Sample Status The top line of the Operate Screen displays the status of the BT-620 while the unit is sampling. The following table shows the various status messages and their meaning: Status Description STARTING…... -
Page 15: Warnings / Errors
Operate Screen or the main menu. 3.4.2. Real-Time Output BT-620 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 4.4). -
Page 16: Sample Timing
PRINTER FAVORITES SET SIZES CALIBRATE FLOW SET CLOCK SET CONTRAST ABOUT Figure 13 – BT-620 Main Menu Menu Item Description Press Enter to navigate to… View / change location number, auto / Single SAMPLE SETUP Sample Setup Screen mode, sample time and hold time. -
Page 17: Edit Main Menu Items
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. BT-620 Manual Page 16 BT-620-9800 Rev B... -
Page 18: Samples
Figure 15 – Settings Screen 4.3.1. Count Units The BT-620 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;... -
Page 19: Report Type
300 – 38400. 4.4.3. Serial Output Mode The Serial Out setting controls the behavior of the BT-620 serial output. The modes are RS232, RS485, Printer or Network (see Section 6 for serial communication protocol). The following table lists the Serial Output settings and describes their meanings. -
Page 20: Printer
Figure 19 shows the analog output connector pin assignments. G pins are signal ground. 1 and 2 are Analog Output 1 and Analog Output 2 which are associated with Favorite 1 and Favorite 2 respectively (see Section 4.6.2). BT-620 Manual Page 19 BT-620-9800 Rev B... -
Page 21: Calibrate Flow Screen
4.7. Calibrate Flow Screen The BT-620 has a factory calibrated flow rate of 1 CFM (28.3 LPM). Under normal circumstances, the integrated flow control system will maintain flow within +/- 5% of this flow rate. Use the following procedure to calibrate the flow rate when a periodic flow rate check (Section 8.1.2) indicates a flow rate error greater than +/- 5%. -
Page 22: Set Clock Screen
Press ▲ or ▼ to toggle between the two version numbers. The serial number is shown on the third line. BT-620 80203 R0.1.0 SN A10000 www.metone.com Figure 24 – About Screen BT-620 Manual Page 21 BT-620-9800 Rev B... -
Page 23: Data Menu
5.1. Copy to USB Drive Figure 26 shows the Copy Data Screen. The BT-620 will copy all data from the displayed date/time to current time. Initially, the date/time will be the first sample record so all records will be copied. To reduce transfer time, press Enter and change the date/time to a more recent date/time. -
Page 24: Printing Sample Data
PRINTING...10 FINISHED! Figure 30 – Printing Status Screen Pressing the ESC button cancels the data printing and loads the menu. The format of the print is dependent upon the report setting (Section 4.2.4). BT-620 Manual Page 23 BT-620-9800 Rev B... -
Page 25: Memory Screen
To charge the battery, connect the battery charger to an AC power outlet and the DC plug to the socket on the back of the BT-620. The battery charger is universal and will work with power line voltages of 100 to 240 volts, 50 to 60 Hz. The battery charger LED will be Red during charging Phase 1 (constant current). -
Page 26: Battery Replacement
You can purchase an optional battery charging cable and replacement battery pack to extend battery operating time. Use the charging cable with the included battery charger to charge the replacement battery while you operate the BT-620 under battery power. 6.1.1. To charge the replacement battery pack 1. -
Page 27: Serial Communications
The following sections discuss the various serial communications. ATTENTION: The USB drivers must be installed before connecting the BT-620 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. -
Page 28: User Mode
Read serial number Count Units (0=CF, 1=/L, 2=TC, 3=M3) Temperature Units (0=C, 1=F) Returns Channel Size information. Sets Date/Time without user interaction (string) Operational Status. S=Stop, R=Running, H=Hold. Set Channel Sizes (all 6 Channel Sizes) BT-620 Manual Page 27 BT-620-9800 Rev B... -
Page 29: Real Time Output
Note 2 Temperature (C,F) Note 2 & Note 3 RH (%) Note 3 Location Sample Time (0-9999 seconds) Favorite 1 Size Note 4 Favorite 2 Size Note 4 Status Bits (see below) Note 5 BT-620 Manual Page 28 BT-620-9800 Rev B... -
Page 30: Printer Style
For additional information on networking commands and addressing refer to the BT- 620-9801 Networking Supplement. Figure 32 shows the RS485 connector location and pin assignments. Figure 33 shows a RS-485 network wiring diagram. BT-620 Manual Page 29 BT-620-9800 Rev B... -
Page 31: Ethernet Port Setup And Configuration
7.6. Ethernet Port Setup and Configuration The BT-620 Ethernet port must be configured with some drivers by the user: 7.6.1. Setting the Static IP Address of the BT-620: 1. You will need to obtain a Static IP Address from your network administrator. -
Page 32: Installing The Virtual Serial Port Drivers
8. Type in a Network Mask in the Network Mask window. 9. Set the baud rate to 38400. 10. Press the Set button to change the IP address of the BT-620. 11. Click the X close button. 7.6.2. Installing the Virtual Serial Port Drivers: 1. - Page 33 Next. The Installing screen will display that the software is installing the drivers. 2. When the Installation Complete screen is displayed, click the Finish button. You will need to restart your computer before the drivers will be ready to use. BT-620 Manual Page 32 BT-620-9800 Rev B...
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Page 34: Configuring The Virtual Com Port For The Bt-620
2. The configuration window will appear as shown below. Click the New button. 3. Type in the IP address you assigned earlier to the BT-620 unit. Set the Device Port to 23 and chose a Com Port from the drop down window as shown below. - Page 35 This completes the virtual com port drivers. Remember this instrument will always be accessed by the Com Port you chose in step 3. Click the close button on the browser and the VirtualSerialPort program window. BT-620 Manual Page 34 BT-620-9800 Rev B...
- Page 36 6. Click on the Serial link at the top of the page. You should be taken to a page like shown below. BT-620 Manual Page 35 BT-620-9800 Rev B...
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Page 37: Maintenance
7. Change the Baud Rate and Flow Control settings to match your BT-620. All other settings should remain as shown above. Press the Submit New Settings button to have these settings take effect. In some slower networks, characters may be dropped. -
Page 38: Zero Count Test
4. The flow rate can be adjusted using the front panel (see Section 4.7) 8.1.3. Annual Calibration The BT-620 should be sent back to Met One Instruments yearly for calibration and inspection. The annual calibration cannot be performed by the customer because this calibration requires specialized equipment and a skilled technician. -
Page 39: Troubleshooting
The BT-620 case should never be removed or opened for any reason. Opening or removing the case will void the warranty and may result in exposure to laser radiation, which can cause eye injury. -
Page 40: Specifications
(PN 81752) Zero Particulate Filter (PN 81754) Printer Paper (2 Rolls) (PN 750514) Optional RH & Temperature Probe (PN G3120) Flow Meter (PN 81755) Serial Cable (PN 550065) ISO 21501-4 Calibration (PN 80849) BT-620 Manual Page 39 BT-620-9800 Rev B... -
Page 41: Warranty / Service
Warranty / Service Warranty The BT-620 is warranted against defects and workmanship for a period of two (2) years from the ship date. Any product found to be defective during the warranty period will, at the option of Met One Instruments, Inc., be replaced or repaired. In no case shall the liability of Met One Instruments, Inc.
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