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Wedgewood Photometer Service Parts

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South Fork Instruments has many years of experience as a supplier of innovative instruments and spare parts for photometers, and they provide expert advice and support.

Plug-in UV Lamps for In-line UV Photometer

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The lamps are designed as a direct replacement for the factory-installed standard lamps in Wedgewood’s Model AF44 and Model AF46 UV analyzers.

The new lamps have an enhanced arc, which provides a more stable signal during measurement. All lamps are tested for reliability before delivery and are guaranteed to fit into the lamp houses on Wedgewoods Model AF44 and Model AF46.

 

 

Two types are available:

  • S-1415-0150-00 280 nm phosphor coated lamp
  • S-1415-0160-00 254 nm clear glass lamp

Size Specification:

Diameter of Body: 0.43”
Diameter of Glass: 0.354”
Length of Glass: 1.075”
Overall Length: 2.375”

Guaranteed Life:

Phosphor Coated Lamps: 1 yr or 3500 hrs to half minimum intensity specification (2)
1Non-Coated Lamps: 1 yr or 5000 hrs to half minimum intensity specification (2)

Minimum Intensity Specification:

Non-Coated Lamps: 27 uW/cm2 @20cm (1)
1Non-Coated Lamps: 0.23 uW/cm2 @20cm (1)

(1) New lamp operating on standard High Frekvency Power Supply at 20 mA at Primary Wavelength
(2) Whichever comes first

Optical Interference Filters for In-line UV Photometers

Optical Interference Filters are designed as a direct replacement for the factory-installed filters in Wedgewoods Model AF42, Model AF44 and Model AF46 UV Analyzers.

The filters use state-of-the-art deposition technology to provide a consistent and reliable pass band characteristic for photometric accuracy, and have hard coatings to ensure resilience to UV light when in use. All filters are tested before delivery and are guaranteed to fit the standard Model AF42, Model AF44 and Model AF46 UV Analyzer lamp and detector housings.

The filter sets are supplied with a test certificate and with optical scans describing pass band filter characteristic.

The filters are supplied in a set for all models. Each set contains a measuring filter and a reference filter. Note that Model AF46 sensors require two sets, one for each installed wavelength.

Three types are available:

  • S-A003-0280-00 280 nm filter set for AF44 and AF46 UV Photometer
  • S-A003-0280-02 280 nm filter set for AF42 UV Photometer
  • S-A003-0254-00 254 nm filter set for AF42, AF44, and AF46 UV Photometer

Size Specifications:

Diameter: 12.5mm
Thickness: Reference 0.200″
Measurement 0.230″

Optical Specifications:

CWL: Stated WL ± 2nm
HBW: 10nm ± 2nm
Peak T: >/= 10% @ stated WL ± 2nm (depending upon WL and filter type)
Out of band blocking: %T < 0.001% from X-Ray to CWL-20nm & from CWL+20nm to Far IR
Wavelength shift: < 0.01nm per °C
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