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Moniteur en continu pour particules dans l'air

Moniteur en continu pour particules dans l'air

Modèle :BAM-1020


Besoin de plus d'informations? (514) 354-2511 - 1-800-463-4363

Features
  • U.S. EPA Federal Equivalent Method for PM10 and PM2.5 monitoring
  • Long term unattended remote operation of up to 60 days between site visits
  • Very low operating costs
  • Automatic hourly span checks
  • Fast and easy field audits using common FRM audit tools
  • Bench top or equipment rack mounting in mobile or stationary shelters
  • Rugged anodized aluminum, stainless steel, and baked enamel construction
  • Highly accurate, reliable, and mechanically simple flow system
  • Hourly filter advances minimize effects on volatile compounds
  • Advanced Smart Heater technology precisely controls sample relative humidity
  • Integrated datalogger allows the connection of up to six additional meteorological sensors
  • Internal memory provides up to 182 days of digital data storage
  • Data retrieval through RS-232 serial ports using direct PC connections, modems, printers, or digital data collection systems

 

Designations

The Met One Instruments Model BAM-1020 has longstanding U.S. EPA designation as a Federal Equivalent Method (FEM) for continuous PM10 particulate monitoring. In addition,
the BAM-1020 is the world’s first instrument to obtain U.S. EPA FEM designation for continuous PM2.5 monitoring, when configured with the specified settings and accessories.

The BAM-1020 has also obtained corresponding certifications in other countries and regions.

 

Principle
The BAM-1020 automatically measures and records airborne particulate concentration levels (in milligrams or micrograms per cubic meter) using the industry-proven principle of beta ray attenuation.Thousands of BAM-1020 units are currently deployed worldwide, making the unit one of the most successful air monitoring platforms in the world.

 

Operation
Each hour, a small 14 C (carbon-14) element emits a constant source of high-energy electrons (known as beta rays) through a spot of clean filter tape. These beta rays are detected and counted by a sensitive scintillation detector to determine a zero reading. The BAM-1020 automatically advances this spot of tape to the sample nozzle, where a vacuum pump then pulls a measured and controlled amount of dust-laden air through the filter tape, loading it with ambient dust. At the end of the hour this dirty spot is placed back between the beta source and the detector thereby causing an attenuation of the beta ray signal which is used to determine the mass of the particulate matter on the filter tape and the volumetric concentration of particulate matter in ambient air

 

 

Data Collection
All data files are accessible via an industry standard two-way RS-232 serial port using common terminal programs or Met One Instruments software such as MicroMet Plus®
and Comet.™ The data is available in a variety of formats including daily reports, last record, all data, and new records since last download. Configuration files, error logs, and flow statistics are also available. Digital dataloggers may obtain data from the unit using serial port commands or by recording the automatic hourly serial output.

 

Error Handling
The BAM-1020 performs continuous user selected evaluation of a variety of criteria for data validation including flow statistics and a comprehensive set of error codes including power failures, flow failures, hardware failures, tape errors, nozzle errors, span check errors, beta count errors, and more.

 

Maintenance
The BAM-1020 is designed to run continuously with only monthly or bi-monthly scheduled maintenance — a single roll of filter tape will last more than 60 days. The BAM-1020 also contains a comprehensive self-test function which allows the unit to preemptively test itself for any mechanical failures in the tape control system.

 

Specifications
PARAMETER  SPECIFICATION 
Operating Principle   Measures ambient particulate concentrations using beta ray attenuation
U.S. EPA Designations  PM10: FEM (EQPM-0798-122), PM2.5: Class III FEM, (EQPM-0308-170)
Approvals   CE, NRC, TUV, California ARB, ISO 9001
PERFORMANCE
Accuracy   Exceeds US-EPA Class III PM2.5 FEM standards for additive and multiplicative bias
Measurement Resolution   0.1 µg/m3
Display Resolution 1 µg/m3
Lower Detection Limit (2 ) 1 hour < 4.8 µg/m3 (less than 4.0 µg/m3 typical)
Lower Detection Limit (2  ) 24 hour < 1.0 µg/m3
Standard Range   0 – 1.000 mg/m3 (0 - 1000 µg/m3)
Optional Ranges   0 – 0.100, 0.200, 0.250, 0.500, 2.000, 5.000, 10.000 mg/m3
(special applications)
Measurement Cycle Time   1 hour
Flow Rate   16.7 liters/minute adjustable 0–20 LPM range actual or standardized flow
Filter Tape   Continuous glass fiber filter tape, 30mm x 21m roll > 60 days/roll
Span Check  Automatic 0.800 mg (typical) span foil, verified hourly
Beta Source 14C (carbon -14), 60 µCi ±15 µCi (< 2.22 x 10Beq), half-Life 5730 years
Beta Detector  Type  Photomultiplier tube with organic plastic scintillator
ENVIRONMENTAL
Operating Temperature  0 to +50˚C
Ambient Temperature -30˚ to +60˚C
Ambient Humidity  0 – 90% RH, noncondensing
Sample Humidity Control  Active Smart Heater module, 10 – 99% RH setpoint
Enclosure  Weatherproof enclosure or shelter is required
INTERFACE
User Interface  Menu-driven interface with 8 - l i n e 40-character LCD display and dynamic keypad
Analog Output  Isolated 0 –1 VDC output standard. 0 –10 V, 4–20 mA, 0 –16 mA switch-selectable
Serial Interface  RS - 232 two-way serial port for PC or modem communications
Printer Output  Output-only serial port for data or diagnostic output to a PC or serial printer
Telemetry Inputs  Clock reset (voltage or contact closure), telemeter fault (contact closure)
Alarm Contact Closures  Data error, tape fault, flow error, power failure, maintenance
Error Reporting  User-configurable available through serial port, display, and relay outputs
Memory  4369 records (182 days at 1 record/hr)
ELECTRICAL
Power Supply  100 –230 VAC, 50/60 Hz. Factory configured.
Power Consumption  Less that 0.4 kw, 3.4 A, worst case with pump and smart heater running.
PHYSICAL
Weight  54 lbs (24.5 kg) without external accessories.
Unit Dimensions  Height = 12.25” (31 cm) Width = 17” (43 cm) Depth = 16” (40 cm)

 

Standard Equipment
• Operation Manual
• Automatic Span Membrane
• Internal Flow Sensor
• Internal Flow Controller
• Internal Filter Temperature, Pressure, and RH Sensors
• Six-Channel Datalogger for Accessory Sensors
• Serial Communications Cable
• Universal Power Cable
• Pump Control Cable and Air Tubing
• Rack Mounting Hardware
• Reusable Packing Materials
• Comet™ Data Collection Software
• Glass Fiber Filter Tape, One Roll

 

Required Accessories
• BX-802 EPA PM10 Inlet (all units)
• BGI Inc. VSCC™ PM2.5 Cyclone (PM2.5 FEM units)
• BX-596 Ambient AT/BP Combo Sensor (PM2.5 FEM units)
• BX-302 Zero Filter Calibration Kit, with leak test valve (PM2.5 FEM units)
• BX-827 or BX-830 Smart Inlet Heater (PM2.5 FEM units)
• BX-801 Inlet Tube Kit, with roof flange and support struts (most installations)
• Medo Linear Piston, or Gast Rotary Vane Vacuum Pump

 

Optional Accessories
• BX-305 Leak Test Valve
• BX-308 Service Tool Kit
• BX-803 TSP Inlet, with Debris Screen
• BX-344 Inlet Cleaning Kit
• BX-592 Ambient Temperature Sensor
• BX-996 Modem Kit
• Custom-length inlet tubes and extension kits, max 16’
• Communications options including radio, cell, and satellite systems
• Weatherproof Outdoor Mini Enclosures BX-902 and BX-903
• Ambient RH, BP, WS, WD, and solar sensors

 

 

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