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Met One Instruments, Inc.

1600 NW Washington Blvd.
Grants Pass, OR 97526
Telephone: (541) 471-7111
Facsimile: (541) 471-7116
www.metone.com

BAM 1020 Particulate Monitor Operation Manual

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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 without the express written permission of Met One Instruments, Inc.

BAM

1020

ARTICULATE

ONITOR

PERATION

ANUAL

BAM

1020-9805

Содержание BAM-1020

Страница 1: ...ration Manual Copyright 2020 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 without the express written permission of Met One Instruments Inc BAM 1020 PARTICULATE MONITOR OPERATION MANUAL BAM 1020 9805 REV A ...

Страница 2: ...uctions 11 2 6 BAM 1020 Power and Electrical Service 19 2 7 Configuring External Sensors 20 2 7 1 Configuring the BX 597A BX 598 Sensor 20 2 7 2 Changing Sensor Addresses 20 3 USER INTERFACE 22 3 1 Main Operating Screen 23 3 2 Menu Hierarchy and Navigation 25 3 3 The OPERATE Menu 27 3 3 1 Load Filter Tape 27 3 3 2 Transfer Data 28 3 3 3 About 29 3 3 4 Conc Chart 29 3 4 The TEST Menu System Overvie...

Страница 3: ...4 INITIAL SETUP OF THE BAM 1020 56 4 1 Power Up 56 4 2 Warm up Period 56 4 3 The Main Operate Screen 56 4 4 Filter Tape Loading 57 4 5 Self Test 58 4 6 Initial Setup Settings Considerations 59 4 7 Initial Leak Check and Flow Check 59 4 8 Starting a Measurement Cycle 59 5 THE MEASUREMENT CYCLE 60 5 1 The One Hour Cycle Timeline 60 5 2 Automatic Span Checks During The Cycle 61 5 3 Filter Tape Use 62...

Страница 4: ...ero Filter Background Test 85 7 DATA COLLECTION AND COMMUNICATIONS 87 7 1 Back Panel Connections 87 7 2 External Data Logger Interface System 88 7 2 1 Analog Concentration Output Signal 88 7 2 2 Early Cycle Mode Option For Analog Data Collection 89 7 2 3 Interfacing a Digital Data logger with the BAM 1020 90 7 3 Digital Communications and Data Retrieval 91 7 3 1 Direct Serial Port Connections and ...

Страница 5: ...n on subjects such as theory diagnostics accessories and alternate settings These sections provide valuable information which should be consulted as needed Electronic versions of this manual are also available This manual is periodically revised for maximum accuracy and to incorporate new features or updates Below is a brief description of the BAM 1020 manual revision history Rev Released Manual D...

Страница 6: ... D 2042 D 2023 R 2033 E 2043 E 2024 T 2034 F 2044 F 2025 U 2035 G 2045 G 2026 W 2036 H 2046 H 2027 X 2037 J 2047 J 2028 Y 2038 K 2048 Table 1 2 Met One Instruments Inc Serial Number Designations by Year 1 3 BAM Beta Attenuation Monitor The Met One Instruments BAM 1020 beta attenuation mass monitor automatically measures and records ambient particulate mass concentration levels using the principle ...

Страница 7: ...alibration 1 5 BAM 1020 US EPA Configurations The BAM 1020 is US EPA designated for PM10 PM2 5 and PM10 2 5 under the following designation numbers Designation Number EQPM 0798 122 PM10 Designation Number EQPM 0308 170 PM2 5 with BGI Mesa Labs VSCC or Tisch Cyclone Designation Number EQPM 0715 266 PM2 5 with URG Cyclone Designation Number EQPM 0709 185 PM10 2 5 with BGI Mesa Labs Cyclones US EPA d...

Страница 8: ...ange 0 to 90 RH non condensing Humidity Control Actively controlled inlet heater module Approvals U S EPA MCERTS CE NRC TUV CARB ISO 001 Standard User Interface 4 3 graphic color touch screen display Analog Output Two channels 0 1 0 2 5 0 5 VDC Serial Interface One 1 full duplex RS 232 one 1 half duplex RS 485 serial port for PC or modem communications One 1 USB Type B serial port One 1 Ethernet p...

Страница 9: ...oof It is designed to be mounted in a weatherproof level low vibration dust free and temperature stable environment where the operating temperature is between 0o C and 50o C and where the relative humidity is non condensing and does not exceed 90 There are two standard configurations described below for providing a weatherproof location in which to install the BAM 1020 Please contact Met One Instr...

Страница 10: ... One Instruments Inc recommends checking for local regulations and guidance documentation that may exist before selecting the site in which to install the BAM 1020 For example US EPA provides a variety guidance documents where site selection issues are addressed Such guidance and regulation may provide information concerning 1 Inlet height 2 Spacing and clearance 3 Proximity to particulate sources...

Страница 11: ...ly all weather silicone caulking around the top of the hole and install the BX 801 roof flange onto the hole The threaded barrel of the flange is usually installed downward Secure the flange in place with four lag bolts or self tapping screws not supplied Caulk around the screws to prevent leaks Apply Teflon tape to the threads of the gray plastic watertight fitting and screw it into the roof flan...

Страница 12: ... the same 3 pin metal power connector The Smart Heater connector plugs into the 3 pin connection of the external heater relay enclosure mounted on the back panel An A C power cord connects to the relay enclosure via a power entry module The relay located inside the heater relay enclosure is controlled by the 12VDC heater control signal Warning The heater relay controls live AC line voltage to the ...

Страница 13: ...t manner available In some cases it may be necessary to simply drill a 3 8 hole through the roof a few inches away from the inlet tube route the cable through the hole and caulk it to prevent leaks The BX 597A sensor attaches directly to the inlet tube with a supplied U bolt Connect the cable to the Sensor Network on the back panel of the BAM 1020 as follows BX 597A Temp RH Pressure Sensor BX 598 ...

Страница 14: ...te the pump so that noise is minimized if the BAM 1020 is in an area where personnel are present If the pump is to be enclosed ensure that it will not overheat The Gast pumps have a thermal shutdown inside which may trip if overheating occurs Route the clear 10 mm air tubing from the pump to the back of the BAM 1020 and insert it firmly into the compression fittings on both ends The tubing should ...

Страница 15: ...BAM 1020 9805 Manual Rev A docx Page 15 Figure 2 1 Typical BAM 1020 Installation in a Walk in Shelter ...

Страница 16: ...Page 16 BAM 1020 9805 Manual Rev A docx Figure 2 2 Typical BAM 1020 Installation in a BX 902 Mini Enclosure ...

Страница 17: ...BAM 1020 9805 Manual Rev A docx Page 17 Figure 2 3 BAM 1020 Mounting Dimensions ...

Страница 18: ...Page 18 BAM 1020 9805 Manual Rev A docx Figure 2 4 BAM 1020 Rear Panel Connections ...

Страница 19: ...One Mini Shelter 120V worst case with shelter heater ON 4 2A 500W BX 903 Ekto Mini Shelter 120V 2000 BTU air conditioner 7 4A 586W BX 904 906 Ekto Mini Shelter 120V 4000 BTU air conditioner 13 5A 1172W Table 2 1 BAM 1020 Power Requirements Notes The BAM transport motors only run for a few seconds each per hour Quiescent BAM current is 760mA The vacuum pump runs for either 42 or 50 minutes per hour...

Страница 20: ...ht shows a two sensor configuration Figure 2 5 Digital Link Screen The State field indicates that the BAM 1020 is either starting up digital communications or waiting for a response from the sensor If firmware revision is missing or incorrect communications are not properly established with the sensor The SETUP button provides access to the Digital Setup screen for configuring the addresses of the...

Страница 21: ... address in the sensor to address number 1 and exit back to the main Digital Link screen The Sensor 1 field will now display the 597A details similar to the image in section 2 7 1 Figure 2 7 Change Address If two sensors share the same address disconnect one of them and then use the CHANGE button to set the other one to a different address Remember that the 597A 598 must be configured for address ...

Страница 22: ...tions including how to view data and errors Figure 3 1 The BAM 1020 User Interface The BAM 1020 user interface is a touchscreen display used to control almost all of the features and functionality of the BAM 1020 It is mounted on the back side of the front door assembly with access to the display granted through a cutout on the door panel as shown in Figure 3 1 ...

Страница 23: ... screens shown in Figure 3 2 Note A concentration value of 99 999 mg m3 or 99999 ug m3 is an invalid concentration measurement and is due to an appropriate alarm condition It will also be displayed when initially starting the instrument until completion of the monitor s first successful measurement sample Note Returning to the Main Operating screen will place the unit in an ON and ready to sample ...

Страница 24: ...f the monitor ConcS The concentration at Standard conditions of the last hourly sample Flow The sample air flow rate in Actual LPM Membrane Results of the last span membrane test AT 597A or 598 AT sensor reading RH 597A RH sensor reading BP 597A BP sensor reading Filter Temperature Internal Filter Temperature after the filter tape Filter RH Internal Filter RH after the filter tape Filter Pressure ...

Страница 25: ...for nozzle positioning Verify and configure digital sensor network Manually open and close the alarm relay Calibrate the analog output Test the analog output Setup See Section 3 5 Clock Sample Flow Calibration Inlet Heater Units Clear memory Password Reports Alarms Station ID Met Average Analog Outputs Serial Port Modbus Ethernet Ethernet Config Sound Volume Touch Calibration Language Set the date...

Страница 26: ...n menu screens such as the Setup Menu shown in Figure 3 4 and on the main operating screen Figure 3 3 Main Menu Drop Down Selections Figure 3 4 Setup Menu To return to the main operating screen see Section 3 1 press the Home icon located in the upper right corner of all main menu screens This icon can clearly be seen in the Setup Menu image shown here on Figure 3 4 To cancel an action and return t...

Страница 27: ...reen The X key on the far right performs a backspace operation A similar screen also exists for letters and pick lists 3 3 The OPERATE Menu Selecting the Operate Menu from the menu selection drop list see Figure 3 3 provides access to the most commonly used areas for normal operation of the BAM 1020 monitor This will not interrupt the sample if already running Figure 3 7 The Operate Menu 3 3 1 Loa...

Страница 28: ...ALL DAYS is selected by entering a 0 The Files field determines which files to copy to the USB flash drive The USER files Settings Alarms User Data are ones which are used for all routine data collection purposes The ALL option includes additional factory diagnostics files Flow Stats 5 Min Flow and Factory Diagnostics which are only used if data is being sent to Met One Instruments for factory sup...

Страница 29: ...are revision It also provides the firmware revision of the touchscreen display Figure 3 11 The About Screen 3 3 4 Conc Chart This screen shows a chart of the previous 24 hourly concentration measurement This makes it easy for operators to see any trends in recent concentration levels Figure 3 12 The Conc Chart Display ...

Страница 30: ...cates that pressing it will turn on the pump Similarly when the pump is running this button will display PUMP OFF Use the LEAK ON button to lock the flow controller at its current value This locks the flow controller in position and prevents it from rotating to regulate the flow Figure 3 14 The Leak Test Screen The nozzle control button in the lower right corner will always be labeled as NOZZLE wh...

Страница 31: ...ature Screen 3 4 3 Ambient Pressure This screen provides the options and indications needed to default verify and calibrate the ambient pressure sensor as part of the flow audit and calibration See Section 6 3 7 2 for detailed instructions Figure 3 16 The Ambient Pressure Screen 3 4 4 Flow Calibration The Flow Calibration menu is where the important flow audits checks and calibrations are performe...

Страница 32: ...nce it is complete See Section 4 5 for more details Figure 3 18 The Self Test Screen 3 4 6 Filter Sensors Figure 3 19 The Filter Sensors Screens These screens provide the options and indications needed to default verify and calibrate the filter temperature filter humidity and filter pressure sensors See Section 6 2 for detailed instructions ...

Страница 33: ...Disc cleaner works well for badly soiled membranes Caution The span membrane foil is a thin sheet of polyester and is fragile It must be replaced if damaged Contact the Service department for replacement instructions The Status field indicates the state of the membrane position The Zero Count I1 value is the total beta count through the filter tape only The Span Count I2 value is the total beta co...

Страница 34: ...ne half of a rotation each time moving the tape one window in the indicated direction Photosensor S8 should turn ON to stop the shaft at each half turn and will be OFF while the shaft is turning It is helpful to put an ink mark on the end of the shaft to more easily observe the rotation To Supply Side This photosensor monitors the position of the shuttle beam the two outer tape rollers that move t...

Страница 35: ...The length of one count test is determined by the Beta Count setting Each count test will show the number of beta particles being counted as they accumulate The final count total will stay on the display after the counting is finished Figure 3 24 The Beta Counter Screen Right Tensioner Idler with tape break and tension photosensors Shuttle Beam with shuttle photosensor Tape Supply Reel with motor ...

Страница 36: ...0 counts contact the Met One Instruments service department for assistance see Section 1 2 3 4 11 Membrane Sensors This screen tests the two photosensors which monitor the position of the reference membrane assembly Pressing the EXTEND button extends the membrane out of the housing and positions it over the filter tape The WITHDRAW button retracts it back into the housing It takes a few seconds fo...

Страница 37: ...his screen The Digital Link should indicate OK when the proper link is established See section 2 7 for details on how to configure the 597A 598 sensor as well as any optional wind sensors that may be connected Figure 3 27 The Digital Link Screen 3 4 14 Relay Outputs This screen is used to test the Alarm relay on the back of the BAM 1020 The relay contact is Normally Open NO Verify that the contact...

Страница 38: ...e X key to exit the screen will save any adjustments that have been made To clear any custom settings and restore the factory defaults press the grey RESET button Note This function is critical for all users of external analog data loggers Measure the voltage all of the way to the input of the data logger Every millivolt of error is a microgram of error Make sure the logger is scaling the voltage ...

Страница 39: ... of these settings are set at factory default values although some settings may be altered by the operator This section describes the SETUP menu in detail and should be reviewed when the instrument is first put into service Once set most of the values in the SETUP menus will not need to be changed The SETUP values will not be lost if the BAM 1020 is unplugged or powered down WARNING Some of the se...

Страница 40: ...e This setting helps users identify whether the BAM 1020 is collecting TSP PM10 PM2 5 or PM1 data Whichever option is selected sets the corresponding label to be displayed at the top of the main menu screen This setting is for providing indication on the display only and does not impact any of the actual data collection or reports Conc Units This setting determines the concentration units which th...

Страница 41: ...brane span check Only one pump cycle per hour is allowed regardless of duration Setting the BAM SAMPLE value too long may cause the total measurement cycle to overlap into the next hour so that the BAM 1020 only collects the concentration every second hour Cycle Mode Set the BAM 1020 to operate in either Early Cycle or Standard mode See Section 7 2 2 for details 3 5 3 Flow This screen allows the s...

Страница 42: ...cess to the factory set parameters of the K Factor and Usw These should never be changed without the guidance of the Met One Instruments Inc service department WARNING Altering these values voids the factory calibration and will invalidate all data collected by the BAM 1020 Figure 3 36 The Advanced Calibration Screen A warning screen will pop up when the ADVANCED button is pressed indicating that ...

Страница 43: ...ng of 20 is best in most situations however it is adjustable from 0 to 100 It should be noted that the relative humidity downstream of the filter tape will typically not be the same as the ambient relative humidity Relative humidity is a measure of how much moisture the air is holding compared to how much moisture the air can hold dew point and is strongly temperature dependent For example if the ...

Страница 44: ...r right corner to cancel the operation without erasing the memory 3 5 8 Password Critical settings and calibrations on the BAM 1020 are password protected Any four digit password may be used for this purpose and the Password screen provides the means to set change or disable this protection This password is also applied to the serial port commands Figure 3 40 The Password Screen The default passwo...

Страница 45: ...rred type and PT 1 GEN2 for Generation 2 compatibility The Time Stamp field can be set to mark the collected data with the time from either the beginning or ending of the sample period For example if set to BEGINNING data collected during the hour from 08 00 to 09 00 would be marked as 08 00 Similarly if that data were collected with ENDING as the choice the data time stamp would be 09 00 instead ...

Страница 46: ...riod Figure 3 33 at actual temperature and barometric pressure conditions QtotS m3 Total air sample volume for the BAM Sample period at Standard Temperature and barometric pressure conditions 760 mmHg Flow lpm The average flow rate for the BAM Sample period WS m s The average wind speed for the MET Sample period Figure 3 51 WD Deg The vector average wind direction for the MET Sample period AT C Th...

Страница 47: ...3 Report Types There are two 2 Report Types GENERATION 2 and CHINA HJ 653 These reports are only available from the serial port when the Protocol Type is set to Generation 2 These reports are available for backward compatibility to the previous BAM 1020 Generation 2 Press the VIEW button to show the GENERATION 2 or CHINA HJ 653 report format Figure 3 44 The Report Type Setup Shown here is an examp...

Страница 48: ...entration Range for the report The selections are 100 200 500 1000 2000 5000 or 10000 ug m3 Conc Offset Sets the lower end of the Concentration Range for the report The selections are 15 10 5 0 or 5 ug m3 For example if the Range is 1000 and the Offset is 15 then the maximum possible concentration value reported will be 985 1000 15 and the minimum possible concentration value reported will be 15 A...

Страница 49: ...ogger Setup represent the analog inputs on the rear panel or software assignments of the Generation 2 BAM 1020 The channel assignments shown are typical for a Generation 2 BAM 1020 The XXXXX XXX report parameter represents a log channel selection of NONE Figure 3 48 The Setup Logger ...

Страница 50: ...igher dust loads while still being able to regulate the sample flow The setting range is 0 500 mmHg Conc Error This parameter determines what is displayed and reported whenever one of the major alarm types that affects the concentration calculation is present Minor alarms such as E U R P or D do not trigger this behavior and will still record the actual concentration value There are three choices ...

Страница 51: ...average intervals are 1 5 10 15 and 30 minutes or 1 HR for a one hour average Figure 3 51 The Met Average Screens Warning This setting will affect how long the memory will last before getting full There are 14000 records available in the memory The memory capacity is shown below When the memory gets full the BAM 1020 overwrites the oldest data It is recommended that the MET SAMPLE period is set at...

Страница 52: ...egardless of the concentration units setting the scaling and offset is always entered in μg m3 3 5 14 Serial Ports There are serial connections on the back of the BAM 1020 Each one serves a unique purpose in the communication options available for the monitor and each one is configured separately The RS 232 port will typically be used for direct connection to a PC or other RS 232 compatible device...

Страница 53: ... input here should be provided by the site IT department Figure 3 55 The Ethernet Screen It is recommended to configure the BAM 1020 with a fixed IP address if using Ethernet communications However if needed setting the IP address to 0 0 0 0 will configure the monitor for DHCP operation The IP address port will always be 7500 3 5 17 Ethernet Config This screen is used to view the current Ethernet ...

Страница 54: ...h Calibration If the touchscreen response seems inaccurate the screen calibration may be adjusted using this menu option Press the CALIBRATE button to begin the calibration process and then follow the instructions on the screen A five second countdown is displayed on each step If it reaches zero the test will be cancelled and the display will return to the Setup menu Figure 3 58 The Touch Calibrat...

Страница 55: ...3 6 Alarms Menu This screen is used to view time stamped alarm events The most recent alarm will be displayed first Use the up and down arrow keys located at the bottom of the screen to scroll through the alarm log Figure 3 60 The Alarms Menu ...

Страница 56: ...erify that the BAM 1020 external power supply external vacuum pump and the heater relay enclosure power cables are connected to the correct AC voltage and that any electrical accessories are correctly wired before energizing the unit Section 2 6 When power is switched on the unit will take about 15 seconds to boot up the touch screen display module after which the main menu screen should appear Th...

Страница 57: ...ool upon One plastic core tube is supplied to use with the first roll of tape After that use the empty core tube left over from the previous roll Never fasten the filter tape to the aluminum hub 5 Load the new roll of filter tape onto the right supply reel and route the tape through the transport assembly as shown in the drawing Attach the loose end of the filter tape to the empty core tube with a...

Страница 58: ...and take up motors to create slack in the filter tape and look for proper operation of the tensioner photo interrupters Tape Tension The BAM 1020 will tension the filter tape and then check the condition of the tensioner photo interrupters Shuttle Beam The BAM 1020 will attempt to move the shuttle beam left and right and will check the motion with a photo interrupter Capstan Shaft The Capstan shaf...

Страница 59: ... Leak Check and Flow Check The BAM 1020 comes with factory set flow calibration parameters which will allow the BAM 1020 to accurately control the 16 67 L min sample flow system right out of the box However due to minor variations between different types of flow transfer standards it is best to calibrate the flow system with a traceable flow audit standard upon initial deployment Perform leak chec...

Страница 60: ...for a total of 58 minutes The other two minutes of the hour are used for tape and nozzle movements during the cycle This timeline applies if the BAM 1020 is set for a COUNT TIME of 8 minutes which is required for all EPA and EU designated PM2 5 configurations When configured as a US EPA designated equivalent method for PM2 5 COUNT TIME must be set to 8 minutes If it is desired to operate the BAM 1...

Страница 61: ... 60 The beginning of the next hour The BAM 1020 records the just calculated concentration value to memory and sets the analog output voltage to represent the previous hour s concentration The BAM 1020 advances a new fresh spot of tape to the beta measurement area and the measurement cycle starts again 5 2 Automatic Span Checks During The Cycle While the vacuum pump is on and pulling air through th...

Страница 62: ...e is unique to each BAM 1020 and can be found on the calibration sheet Most membrane alarms are caused by a dirty membrane foil The stability measurements and may be compared to determine if the beta counts have changed appreciably during the measurement cycle Rapid changes in temperature relative humidity or other factors may lead to this 5 3 Filter Tape Use The BAM 1020 positions the filter spot...

Страница 63: ...aning Monthly Leak check Monthly Flow system check audit Monthly Clean capstan shaft and pinch roller tires Monthly Clean PM10 inlet particle trap and PM2 5 cyclone particle trap Monthly Download and save digital data log and error log Monthly Compare BAM 1020 digital data to external analog data logger data if used Monthly Check or set BAM real time clock Monthly Replace filter tape roll 2 Months...

Страница 64: ...on of the Smart Inlet Heater When comparing the FT to ambient conditions the FT value should be slightly higher than AT if the heater is operating correctly in idle mode and significantly higher if the heater is in the ON state To check or calibrate the FT sensor select TEMPERATURE in the Filter Sensor selection field Allow the pump to run for at least 5 minutes see note below to allow the sensor ...

Страница 65: ...e an hour or two possibly more Position the RH audit device as close as possible to the BAM sample nozzle during calibration To remove the sensor from the flow system for calibration Unplug the inlet heater and remove the BAM case cover Remove the black 3 port compression manifold from the flow path It is located under the nozzle motor and holds the two filter sensors This is easiest with tool 962...

Страница 66: ...ume flow rate LPM 6 3 2 Flow Control The BAM 1020 regulates flow to actual conditions ambient temperature and barometric pressure Under Actual flow control ambient temperature and barometric pressure measurements are used to convert the measured mass flow into volumetric flow LPM As the measured temperature and barometric pressure change the mass flow controller will adjust its output to maintain ...

Страница 67: ...npredictably biased The BAM 1020 cannot automatically detect a leak at the tape nozzle interface because the airflow sensor is located downstream of the filter tape Allowing a significant leak to persist may result in concentration data being invalidated Routine leak checks and nozzle cleaning prevent any significant leaks from forming Performing an as found leak check before cleaning the nozzle o...

Страница 68: ...ed position as shown in Figure 6 3 Figure 6 3 BX 305 Leak Check Valve Installed on Inlet Tube 6 The pump flow rate should drop below 1 5 LPM a If the flow rate is 1 5 LPM or less the leak check is satisfactory Proceed to step 7 b If the flow rate is greater than 1 5 LPM the leak check fails Proceed to step 7 and then repeat the leak test after completing step 11 If it fails a second time go to Sec...

Страница 69: ...olate the problem Required Tools Leak Check Valve Met One Instruments Part No BX 305 or BX 302 Nozzle Seal Tool Part No 7440 Figure 6 4 7440 Leak Isolation Shim 6 3 5 2 1 Total System Leak Test This procedure will create a positive seal at the nozzle vane interface With this seal in place the rest of the flow system can be tested for leaks The following procedure assumes steps 1 through 6 in Secti...

Страница 70: ...s satisfactory The high flow rate observed during the basic leak test is located at the nozzle tape interface Proceed to Section 6 3 5 2 3 b If the flow rate is greater than 0 3 LPM then there is a leak somewhere in the system Go to Section 6 3 5 2 2 to locate the leak 6 3 5 2 2 Lower Leak Test This procedure will split the flow system at the nozzle vane interface With this seal in place only the ...

Страница 71: ... 1 to verify the flow system integrity 6 3 5 2 3 Filter Tape Leak Test Use this procedure to assess the actual leak rate at the nozzle tape interface It is assumed that the Basic Leak Check and the Total System Leak Test have both already been performed and a high flow rate greater than 1 5 LPM at the nozzle tape interface was found It is also assumed that the filter tape is still not installed Re...

Страница 72: ...fter a couple of attempts this test still fails contact the Met One Instruments Inc service department see Section 1 2 for assistance Troubleshooting Section 6 7 contains additional tips for resolving leaks in the flow system 6 3 6 Nozzle and Vane Cleaning Procedure The nozzle and tape support vane located under the nozzle must be inspected regularly and cleaned as needed in order to prevent leaks...

Страница 73: ...isassembled View Figure 6 8 shows the difference between good and bad filter tape spots The tape on the left is from a properly operated BAM 1020 with a clean nozzle and vane The dust spots have crisp edges are perfectly round and are evenly distributed The tape on the right is from a unit which has a leak A spot of debris has built up on the vane and is punching a pin hole at the edge of each spo...

Страница 74: ... the following steps to verify and calibrate the ambient temperature sensor 1 Make certain that the BAM 1020 has warmed up for at least 60 minutes prior to performing calibrations Also allow the calibration transfer standard CTS to equilibrate to ambient conditions for a minimum of 30 minutes 2 Go to the Test Ambient Temp menu This will stop the current sample if one is in progress 3 Compare the B...

Страница 75: ...he CTS if not already installed Allow the unit flow reading to equilibrate with no flow for 30 seconds 4 Calibrate the Zero Flow rate if not 0 00 LPM by pressing the ZERO button Press CONTINUE 5 Note The DEFAULT button on the FLOW Calibration screen can be used to revert to default calibrations if difficulty is encountered Pressing DEFAULT will remove existing calibration offsets for all three flo...

Страница 76: ...ration or testing purposes Maintenance flags always cause the digital concentration value to go full scale for that hour because the sample cycle was not finished 256 I Internal Error The I error is rare and indicates that an error occurred in the BAM concentration mass span or stability calculation which prevented the generation of a valid concentration value The digital error log will indicate w...

Страница 77: ...range of the FRH sensor The following critical flow errors result in the sample being terminated and the concentration data being set to full scale or as configured in the Setup Alarms menu see Section 3 5 10 AT Disconnected Missing or incorrectly connected AT sensor Pump Off Failure Flow sensor indicates 5 L min with the pump turned off This critical flow error results in the sample being termina...

Страница 78: ...e to a failure in the tape control electromechanical system In current firmware there are several possible sub categories for this error which will appear in the digital error log Tape Latch Pinch rollers latched up at cycle start Tape Shuttle Shuttle photosensor not responding to shuttle move Tape Forward Backward Tape supply motor or take up motor not responding Tape Tension Un tension Tensioner...

Страница 79: ...ect data on both devices for a period of time in order to demonstrate reasonable correlation and acceptable levels of multiplicative slope and additive intercept bias between the two methods Performing such a field test is beneficial as it could reveal an undetected performance or data reporting issue Common issues could include improper data logger scaling incorrect background BKGD values or impr...

Страница 80: ...zardous voltages are present in the following areas Detector Negative High Voltage DC The 82950 circuit board is mounted horizontally inside the BAM 1020 and is covered with a clear plastic safety shield This circuit board generates a dangerous negative DC bias voltage for the beta detector of between 800 and 1200 volts Do not remove the clear cover or touch the board without unplugging the BAM 10...

Страница 81: ...e full scale Problem The BAM hourly concentration is reading negative values Cause Solution It is possible for the BAM 1020 to occasionally read negative numbers if the actual ambient particulate concentration is below the detection limit of the BAM 1020 such as below 3 micrograms This is because the BAM has a noise band of several micrograms This should not happen often If the BAM 1020 is reading...

Страница 82: ...e nozzle and vane Cause Solution The nozzle may be sticking as described above Verify that the nozzle up down motion is smooth and complete If the nozzle feels sticky or gritty it will not seal properly Check the O rings on the sharp cut cyclone if used These can dry out and crack Check for bad O rings on the BAM inlet tube receiver Remove the BAM case cover and inspect all air fittings inside the...

Страница 83: ...as described by Section 3 4 8 This is sometimes caused by misalignment of the SHUTTLE photosensor or the interrupter flag on the end of shuttle beam inside the BAM Problem The display shows MISSING AT SENSOR message Cause Solution The BAM 1020 requires a BX 597A or BX 598 sensor to provide ambient temperature data If no sensor is attached to the Sensor Network RS485 terminals on the rear panel thi...

Страница 84: ...ction feel 2 Remove the four screws two flat head Philips two 9 64 hex that fasten the square inlet receiver bracket to the BAM chassis Lift the assembly off of the BAM It is not necessary to remove the bracket from the inlet receiver cylinder 3 Remove the three 9 64 hex screws that fasten the nozzle adapter to the top of the beta block A T handle hex wrench is easiest The nozzle adapter can now b...

Страница 85: ...nce 6 9 Performing the 72 Hour Zero Filter Background Test All BAM 1020 monitors should have a zero filter test performed before the equipment is first deployed so that an initial BKGD adjustment may be made if necessary This test should be repeated periodically as part of a QA QC program the frequency of which is up to the user When the BAM 1020 is set up for the first time a minimum of 48 72 val...

Страница 86: ...f the inlet tube Note When it is necessary the BX 302 zero filter assembly may be inside the shelter to avoid aspiration of water through the zero filter 3 Allow the BAM 1020 to sample for 48 72 consecutive hours not counting the warm up period for the initial zero test For the zero test to be valid no errors should be logged either during the warm up period or during the 48 72 hour sampling perio...

Страница 87: ...BAM 1020 9805 Manual Rev A docx Page 87 7 DATA COLLECTION AND COMMUNICATIONS 7 1 Back Panel Connections Figure 7 1 Back Panel Connections ...

Страница 88: ...al data logger The BAM 1020 provides an analog concentration output voltage which allows unit to function with many analog data loggers The BAM 1020 digital data outputs can also be collected with digital data loggers or automatic digital data acquisition systems In any case the BAM 1020 internal digital data logging system still stores the complete data array which can be collected periodically T...

Страница 89: ...e just finished hour s concentration However some types of data loggers must have the concentration value available before the new hour starts or the data will be stored in the wrong hour The BAM 1020 has a special EARLY cycle mode Section 3 5 2 which causes the BAM 1020 to start and finish the measurement a few minutes early in order to output the concentration voltage for the last five minutes o...

Страница 90: ...hen collection BAM data with a digital system If the BAM is operating in standard cycle mode then the digital concentration data values are updated exactly at the top of the hour If the digital logger is set to collect the BAM concentration value as soon as it is available then the clocks should be synchronized to prevent collecting the wrong hourly record If the logger must have the BAM concentra...

Страница 91: ...1020 monitors may still be connected to the computers by using a USB to serial converter Of the converters commonly available in local electronics and office supply stores Met One Instruments Inc has seen the most reliable performance from those manufactured by Belkin RS 485 Connection This is a 2 wire half duplex system A common problem is the RS485 and RS485 connections are missed wired USB Conn...

Страница 92: ...e been lost In cases like these download from this weblink https www silabs com products development tools software usb to uart bridge vcp drivers The Comet program is very simple and easy to use and can be mastered quickly without having to navigate any of the BAM 1020 terminal menus described in Sections 7 3 3 and 5 Figure 7 4 Comet Program Interface Install the program on the computer then run ...

Страница 93: ... or laptop using the appropriate cable Note Before using the USB Type B port ensure an existing RS 232 connection is disconnected 2 Open HyperTerminal and it will request a name for the connection Type BAM 1020 or any other name that makes sense for the application and then click OK 3 The Connect To window will open Select COM1 or another port if used from the drop down menu in the Connect Using f...

Страница 94: ...uring the text and save the file 8 When exiting HyperTerminal it will ask to save the connection Click Yes and a file named BAM 1020 ht or whatever name was given when creating the connection will be created in the HyperTerminal folder which will have all of the settings saved Use this for future communications with the BAM 1020 Figure 7 5 Terminal Window Showing the BAM 1020 Menu 7 3 4 Help Menu ...

Страница 95: ...ts ug m3 Beta Count 8 MINUTE Conc Error FULL SCALE VALUE Inlet Type PM2 5 Span Check 1 HR Factory Mode OFF Standard Temp 25 C Tape Pressure 150 Pres Units mmHg FRH Set Point 35 Low Power 20 BAM Sample 42 MET Average 1 HR Cycle Mode STANDARD Maintenance OFF Time Stamp ENDING Interval Output 0 Conc Range 1000 ug m3 Conc Offset 15 ug m3 Analog Range 1 0 2 5 V Analog Range 2 0 2 5 V DAC Cal 1 0 0 0 2 ...

Страница 96: ... file The 3 command will report starting from the last record reported The 4 command reports the last record in the file Use the PR 1 ts command to start a report from the given ts ts Timestamp Description No parameter prints all the data 1 Print the new data 1 to 2000 Print from the previous n hours YYYY MM dd HH mm ss YYYY MM dd HH mm YYYY MM dd HH YYYY MM dd YYYY MM YYYY Print from the timestam...

Страница 97: ... 1 0 698 0 24 4 24 3 24 6 792 8 792 7 792 9 Command 7 Alarm Log This command reports the Alarm file in a CSV type format Response Alarm Report 2020 06 08 17 07 33 Station 9 A14540 Time Alarm 2020 06 05 16 42 01 Maintenance 2020 06 05 16 46 33 Power Fail POWER CYCLE Command 8 and 9 All and New 5 Min Flow These commands report the 5 Min Flow file in a CSV type format The 8 command will report the en...

Страница 98: ...me clock DT yyyyMMddHHmmss DT yyyy MM dd HH mm ss Set the date and time part of the real time clock Parameter Description yyyy Years 2000 2037 MM Months 1 12 dd Days 1 31 HH Hours 0 23 mm Minutes 0 59 ss Seconds 0 59 Command RV Report Firmware Revision This command will report the model number firmware part number and revision string Instruments with more than one processor or programmable devices...

Страница 99: ...evelopment tools software usb to uart bridge vcp drivers The BAM 1020 RS 232 port baud rate must be set to 115200 Setup Serial Ports RS 232 Baud The BAM 1020 Flow Control 232 must be set to NONE Setup Serial Ports Flow Control 232 Warning Disconnect any connections to the RS 232 terminals Locate a Type A to Type B USB cable Connect USB Type A to the PC Connect USB Type B to the BAM 1020 RS 232 USB...

Страница 100: ... Ring Grease mini packets 995712 Calibration Service Tools Description Part Number Graphic BAM 1020 Basic Service Tool Kit Includes nozzle shims reel spacer filter sensor removal tool dark test shim rubber leak check tool hex wrenches BX 308 BAM 1020 Distributor Service Tool Kit Includes all of the above plus two spring scales BX 308 1 BAM Inlet Cleaning Kit Includes pull rope tube brush microfibe...

Страница 101: ...50 60 Hz BX 121 Pump Gast Rotary Vane 220 240 VAC 50 60 Hz BX 122 Muffler Medo Gast Pump Replacement 580293 Gast Pump Rebuild Kit Vanes filters 680828 Medo Pump Rebuild Kit Piston filters 680839 Pump Service Kit Filter Replacement Medo 8588 Pump Controller Relay Module Only Medo BX 139 Pump Controller Relay Module Only Gast BX 139 1 Flow System Components Description Part Number Graphic Flow Senso...

Страница 102: ... Wiring Panel 82970 Touch Screen Door Assembly 83023 Rear Panel Assembly 83387 Fuse 2 0 A Slo Blo 5x20mm 1 per unit 590819 Gear Motor Assembly 4 RPM 4 per unit 83358 Gear Motor Assembly 10 RPM Capstan Drive Only 83359 Inlet Components Description Part Number Graphic PM10 Size Selective Inlet Head EPA Specified BX 802 TSP Sampling Inlet with insect screen BX 803 PM2 5 WINS Impactor BX 804 PM2 5 Sha...

Страница 103: ...Smart Heater Insulating Sleeve White 9123 1 O Rings BX 807 SCC Cyclone set of 6 720097 O Rings BX 808 VSCC Cyclone set of 8 720105 O Rings BX 809 URG Cyclone set of 6 720228 O Rings PM10 Head set of 3 8965 Meteorological Sensors Description Part Number Graphic BX 597A AT BP RH Combo Sensor Standard Accessory BX 597A BX 598 AT Sensor BX 598 Cable assembly for BX 597A BX 598 sensor 25 Feet 82929 25 ...

Страница 104: ...mber Graphic Mini Enclosure Heated and Vented Mfg by Shelter One BX 902B Mini Enclosure Heated and Air Conditioned Mfg by Ekto 2000 BTU A C BX 903 Mini Enclosure Heated and Air Conditioned Mfg by Ekto 4000 BTU A C BX 904 Enclosure Dual Unit Heated and Air Conditioned Mfg by Ekto 4000 BTU A C BX 906 ...

Страница 105: ... is the spot area cm2 is the beta ray absorption cross section cm2 mg The absorption cross section to a very good approximation depends only on the mass of the absorbing species and not on its chemical composition In other words the absorption cross sections for commonly found species in ambient particulate matter such as soot iron oxide silica or salt are all approximately the same It is for this...

Страница 106: ...itions The difference between these two values corresponds to the change in volume between a BAM 1020 sample taken under actual conditions and that same sample taken under standard conditions This equation can be used to calculate the standard concentration Cstd from the ambient concentration Camb data using ambient barometric pressure and temperature data Pamb and Tamb from the same time period i...

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