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PMA 2112 High Intensity UVA Probe

 

The PMA2112 is a UVA detector sensitive to radiation in the range from 320 to 400 nm with the peak sensitivity around the 365nm mercury emission line. The UVA probe detects light through a window on the side of the probe near the end tip and is a useful tool in UV curing applications.

Features:

  • High sensitivity
  • High dynamic range
  • High temperature operation
  • Durable construction
  • Excellent long term stability
  • NIST traceable calibration
  • Radiometric units
  • Probe electrically isolated from the meter
  • Easy to install
  • 0.375"(9.5mm) probe diameter

 

> Detectors need to be used with a radiometer

> Analog version of this detector can be used with any 0 to 5 VDC or 4 to 20mA recording device

Applications:

  • UV curing, printing and photolithography
  • Monitoring of UV sources stability and lifetime
  • Measurements in hazardous environment

The radiation is captured by a diffuser mounted at the end of an 18" long probe and delivered to the sensor through a quartz light guide encapsulated in a metal envelope. This construction places the UV sensor far from the point of measurement, making the probe suitable for high temperature applications, up to 400°C.

The irradiance (intensity of the UV radiation) is displayed in kW/m2 , W/cm2 or mW/cm2, user selectable. The conversion factor is:

1 W/m2 = 0.1 mW/cm2

The detector's high dynamic range allows measurement of signals as strong as 20W/cm2 and as weak as 0.1mW/cm2 . Automatic tracking of the minimum, maximum and average built into the PMA2100 gives the opportunity to monitor the short term fluctuations of the UV source due to changing line voltage, equipment configuration or inherent instability of the UV sources Making the best use of the UV lamp requires precise knowledge of it's lifetime. It can be determined either by frequent spot-checks of the lamp's output or by setting the PMA2100 in the automatic recording mode with the interval as long as 1 hour. The memory buffer can store up to 1024 data points, which is an equivalent of 42 days for 24
hour/day operation.

The integral (dose) of the incident radiation can be automatically measured by the PMA2100. In order to start integrating the measured signal press the START/STOP button. The Integrated dose as well as the integration period will be displayed on the LCD below the main reading. A small running clock icon indicates the active
integration. Pressing the START/STOP button again stops the integration, however the dose and time is still displayed on the LCD along with a halted clock icon. Pressing the START/STOP button again clears the dose integration information and the cycle can be repeated.

Specifications:

  • Temperature range -50-400°C (-56-750°F) - see selection
    guide for applicability
  • Temperature accuracy ±2°C
  • Stability better than 0.1%/year
  • Display resolution 1°
  • Units °F, °C, °K
  • Diameter 1.5" handle, 0.125" sensor
  • Length 15" with handle
  • Weight 10oz
  • Cable  5ft (1.5m)

Analog versions of this detector are available See PMA1112

> Return to Detector Selection Guide

Application Notes & Technical Papers:

Ultaviolet Curing - app105.pdf

Interfacing PMA detectors to a Campbell data logger - app111.pdf

PMA Series capabilities and applications - app112.pdf

PMA detector integration - app120.pdf

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