personalDataRAM™
Hand-Held Real-Time Aerosol monitor/Data Logger

The World's Smallest, Most Versatile Real-Time Aerosol Monitor

Measures Airborne Particulates Concentration in Real Time

With conventional air quality monitoring methods, you won't find out until tomorow that you have reached dangerous levels or are out of compliance today. In contrast the personalDataRAMTM alerts you to a problem within seconds and allows you to take immediate corrective action. It then stores this information in detail for subsequent retrieval/printout/graphing through a computer.



The world's smallest and most versatile direct reading personal aerosol monitor, the personalDataRAM measures mass concentrations of dust, smoke, mists, and fumes in real-time, and sounds an on-board audible alarm whenever a user-defined level is exceeded. Integral large-capacity data logging capability permits storage of 13,000 data points in up to 99 discrete tags. Any tag can store up to 13,000 averages plus tag maximum and STEL values. When you begin a run, the instrument automatically tags
and time stamps the data collected.

The personalDataRAM is ideal for personal/breathing zone monitoring,
plant walk-through surveys, remediation site worker exposure monitoring,
and indoor air quality monitoring.

Highest Performance of Any Real-Time Personal Particulate Monitor

With a measurement range from 0.001 to 400 mg/m3 (auto-ranging),
an optically feedback-stabilized sensing system, ultra-low power
consumption (negligible internal heating), and rigid all-metal
construction,the personalDataRAM sets new standards for sensitivity,
long-term stability, and reliability. These capabilities allow its use in
many applications where such compact monitors were previously
considered unsuited.



Easy-To-Read Two-Line Display
The personalDataRAM's two-line LCD readout continuously displays both real-time and time-averaged (TWA) concentration values, updated every second. Other screens are easily selected by scrolling through a simple user-friendly menu and following prompts. Self-diagnostics continually monitor the unit's operation and flag any problems. LCD screens which indicate remaining memory, battery status, optical background level, as well as any electronic malfunctions can also be selected.

Only four tactile-feedback keys (including ON-OFF) are required to perform all operations and commands.

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Specifications

Concentration measurement ranges (auto-ranging)1:
0.001 to 400 mg/m3

Scattering coeffcient range:  
1.5 x 10 -6 to 0.6 m-1 (approximately) @ l = 880 nm

Precision/repeatability (2-sigma)2:
+ 3 % of reading or + 0.003 mg/m3, whichever is greater
(1-second averaging)
+ 1 % of reading or + 0.001 mg/m3, whichever is greater
(10-second averaging)

Long-term zero concentration stability
(at least 180 days)2:
+ 0.003 mg/m3 (1-second averaging)
+ 0.001 mg/m3 (10-second averaging)

Accuracy 1:
   + 5% of reading + precision

Resolution: 0.1 % of reading or 0.001 mg/m3,whichever is greater

Particle size range of maximum response :  
0.1 to 10µm

Concentration display updating interval:
1 second

Alarm level adjustment range 3: selectable over entire measurement range

Alarm averaging time 3:  
real time (1 to 60 seconds) or STEL (15 minutes)

Data logging averaging periods 3: 1 second to 4 hours

Total number of data points in memory:  
13,000 ( stored in 1 to 99 data sets or tags)

Logged data:
  • Each data point: average concentration, time/date
    and data point number
  • Run summary:overall average and maximum concentrations, time/date of maximum, total number of logged points, start time/date, total elasped time (run duration), STEl concentration and time/date of STEL, averaging (logging) period, calibration factor, and tag number

  • Elasped time readout range: 
    0 to 100 hours
    (resets to 0 after 100 hours)

    Time keeping and data retention:  
    > 10 years

    Readout display:
      LCD 16 characters (4mm
    height) x 2 lines

    Serial interface:  
    RS232, 4800 baud

    Computer requirements:  
    IBM compatible PC, 286 or higher; WindowsTM 3.1, 3.11, or '95; 2 MB memory or more; hard drive; 3.5" floppy drive; VGA or higher resolution monitor

    Analog signal output (model pDR-1000 AN only):
    0 to 5 V amd 4 to 20 mA, with selectable range between 0 to 0.4 mg/m3 and 0 to 400 mg/m3

    Power:

  • Internal battery: 9v alkaline, 24-hour run time (typical)

  • AC source: universal voltage adapter (included)100-250 volts,
    50-60 Hz (CE marked)

  • Optional battery pack: rechargeable NiMH 72-hour
    run time (typical) Operating environment: -10o to 50o C (14o to 122o F),
    10 to 95% RH, noncondensing

    Storage environment: -20 o to 70 o C (-4 o to 158 o F)

    Dimensions:
    153 mm (6.0 in) H x 92 mm (3.6 in) W x 63 mm (2.5 in) D

    Weight: 0.5 kg (18 oz)

    Standard accessories included:
    zeroing kit, belt clip set, PC commumications software disk, RS232 communications cable, universal voltage AC adapter, carrying case, and manual

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