PMA 2122 Germicidal UVC Detectors

The PMA2122 Germicidal UV detector provides fast and accurate irradiance measurements of the effective germicidal radiation. Ultraviolet radiation at 253.7nm has been used in germicidal applications for several decades. 

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PMA2122

PMA1122-OEM Package shown

U.S.Pat.5,946,641

U.S.Pat.5,790,432

FEATURES

• High sensitivity
• Dynamic range 2*10⁵
• Excellent long term stability
• Cosine corrected
• NIST traceable calibration
• Ease of use
• Selectable units

APPLICATIONS

• Water Treatment Plants
• Purification Systems
• Environmental testing

> Detectors need to be used with a Radiometer

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

Microorganisms (bacteria) ,usually in air or water, can be killed using UV or a combination of UV and ozone. The UV producing lamps in the purification systems must be monitored to insure that the bacteria are receiving a lethal dose of germicidal UV radiation. The expensive UV lamps can be monitored to get maximum life out of the lamp before replacement. The germicidal UV detector can also be used to insure that the proper lamp has been installed after replacement.

Specifications

• Spectral response 249-261nm, figure 1
• Angular response 5% for angles <60°
• Range
  0.01 µW/cm² to 2000 µW/cm²
  0.1 mW/m² to 20,000 mW/m²

      0.001 mW/cm² to 20 mW/cm²  (PMA2122G)
 

• Display resolution
  0.01 µW/cm²
  0.1 mW/m²

      0.001 mW/cm² (PMA2122G)

• Operating environment 32 to 120 °F (0 to +50 °C) no precipitation
• Temperature coefficient 1% /°C for solar radiation
• Cable 5ft (1.5m)
• Diameter 1.6" (40.6 mm) [PMA1122; 1.58" (40.1mm)]
• Height 1.8" (45.8 mm) [PMA1122; 1.23" (31.2mm)
• Weight 7.1 oz. (200 grams)

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