Germicidal UV lamps | Buy ultraviolet lamps & bulbs
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Otava Engineering Pty.Ltd. your supplier of replacement Germicidal UVC Lamps

We provide cost-effective solution to your ongoing needs

INTRODUCTION

Otava-UVS Germicidal UVC lamps are best solution for disinfection and sanitation used in wide range of applications, including water treatment and air surface disinfection, water re reclamation, Swimming/spa pool water, TOC Reduction, Aquaculture, Kitchen hood exhaust purification and deodorization, using ozone producing lamps..

We specialize in supplying of replacement low-pressure standard and amalgam UVC lamps operating on 185 (Ozone Producing) and 254 nm wavelengths, for usage in disinfection chambers and channels of the municipal wastewater plants, industrial process water and drinking water treatment plants, kitchen hood exhaust systems.

The lamps and sleeves are made by our manufacturing facility in Melbourne, adhering to the international quality standards.  Our company has the most modern machines, 40 years of experience in this field and proven track record of continuous technical product improvements and developments of new technologies. We have a list of loyal satisfied customers in Australia and other parts of the world.

Our lamps and sleeves are designed and manufactured so that they precisely fit to the vast majority of UV  disinfection plants designed and built by world leading companies, such as UDC, Trojan, ITT, Wedeco, Fisher Porter, etc., and fully replace the originally installed units, but at much lower costs. We don’t only supply high-quality components proven in many installations over long periods, but also provide ongoing ”direct-from-the-manufacturer” service and technical backup. Our main focus is on:

  • Very competitive pricing
  • Supply of lamps tailored to our customers’ needs
  • “Plug & Play” compatibility
  • Reliable ongoing customer service & technical support

REPLACEMENT GERMICIDAL UVC LAMPS

Our germicidal lamps are manufactured from 99.9% pure fused glass, thus allowing maximum transmission of the required UV rays.

STANDARD TYPES – BASIC RANGE

INSTANT-START LAMPS

Total Arc Lamp Electrical Values UVC UV Intensity Lamp
Length Length Dia Voltage Current Input Output @ 1 m Life
Lamp Type [mm] [mm] [mm] [V] [A] [W] [W] [μW / cm2] [hrs]
G357T15N DEMinBP/C 357 281 15 51 0.425 17 5.7 56 9000
G36T15N DEMedBP 843 767 15 100 0.425 42 14.4 150 9000
GHOT15N DEMedBP 843 767 15 95 0.800 75 25.0 240 9 000
G60T15N DEMedBP 1554 1478 15 175 0.450 75 30.0 260 9000
GHOT15N DEMedBP 1554 1478 15 180 0.800 145 48.0 385 9000

PREHEAT-START LAMPS

Total Arc Lamp Electrical Values UVC UV Intensity Lamp
Length Length Dia Voltage Current Input Output @ 1 m Life
Lamp Type [mm] [mm] [mm] [V] [A] [W] [W] [μW / cm2] [hrs]
G6T15N SE4P 212 136 15 28 0.425 12 2.8 27 9 000
GHOT15N SE4P 212 136 15 23 0.800 18 5.0 50 9 000
G8T15N SE4P 287 211 15 40 0.425 17 4.0 40 9 000
GHO8T15N SE4P 287 211 15 34 0.800 27 7.5 75 9 000
G357T1N SE4P 357 281 15 51 0.425 17 5.7 56 9 000
GHOT15N SE4P 357 281 15 40 0.800 32 10.0 95 9 000
G436T15N SE4P 436 360 15 62 0.425 26 7.3 72 9 000
GHO436T15N SE4P 436 360 15 53 0.800 42 13.5 125 9 000
G36T15N SE4P 842 762 15 113 0.425 48 13.5 125 9 000
GHO36T15N SE4P 842 723 15 100 0.800 80 29.0 265 9 000

HIGH-OUTPUT LAMPS

Total Arc Lamp Electrical Values UVC UV Intensity Lamp
Length Length Dia Voltage Current Input Output @ 1 m Life
Lamp Type [mm] [mm] [mm] [V] [A] [W] [W] [μW / cm2] [hrs]
GHO36T15N SE4P 2758 842 723 15 100 0.8 80 29 265 12 000
GHO60T15N SE4P 2590 1554 1434 15 180 0.8 145 50 425 12 000
GHO60T15VH SE4P 2468 1554 1434 15 180 0.8 145 50 425 12 000

High-Output Lamp Configuration is available for all our types and these lamps will deliver up to 80% higher UV output than standard units. They can be fitted with the standard H-O filament or our long-life electrode.

  • High-Output Filaments are usually operated at higher current – between 600 and 1200 mA.
  • Long-Life Filaments are of a single piece construction, offer greater durability and help to reduce the occurrence of premature burnout. They also generate higher UV output than the conventional type.

INDIUM AMALGAM LAMPS

Our Amalgam Lamps deliver up to three times the UVC output of the standard low-pressure UVC types and are a cost- effective alternative to the medium-pressure lamps. They are designed to operate efficiently at higher operating temperatures than standard and H-O lamps, thus delivering greater efficiency and / or requiring lower initial equipment cost. The main features include:

  • Greater stability of UVC output over varying temperatures.
  • Increased UV dosage at given size of the chamber / channel.
  • Higher efficiency =  fewer lamps needed = lower initial equipment costs for the whole system.

OUR BASIC RANGE

Total Arc Lamp Electrical Values UVC UV Intensity Lamp
Length Length Dia Voltage Current Input Output @1m Life
Lamp Type [mm] [mm] [mm] [V] [A] [W] [W] [μW / cm2] [hrs]
G36T15N A90 SE4P 2133 843 770 15 80 1.5 120 35 320 12 000
G60T15N A90 SE4P 2360 1554 1483 15 135 1.5 200 65 500 12 000
G36T19N A90 SE4P 2524 843 660 19 75 2.0 150 43 400 12 000
G60T19N A90 SE4P 2915 1554 1483 19 120 2.0 240 85 650 12 000
G60T19N A90 SE4P 2898 1554 1483 19 150 2.2 320 105 750 12 000
G60T28N A90 SE4P 2994 1554 1470 28 100 3.5 350 125 950 12 000

Note :     

UV output is measured under laboratory conditions at 253.7 nm for the period of 100 hours. (Actual output in the plant may somewhat vary depending on the actual operating conditions.)

Total length is measured between the outer edges of the bases, but not including electrical contact pins.

OUR REPLACEMENT LAMPS

COMPATIBILITY WITH OEM MANUFACTURERS

Our Lamp Quartz Sleeve
Disinfection Length Dimensions Ends
OEM Model System Type Spec. No. [mm] [mm] First / Second
UDC
5340 UD G36T5LCA/CB-0L0 3055 843 22×24.5×892 Domed / Open
9410 UD G64T5LCA/CB-0L0 3061 1554 22×24.5×1588 Domed / Open
19905 UD G64T5VHCA/2S07/CB-0L0 2782 1554 22×24.5×1588 Domed / Open
TROJAN
600080 2000 G64T5LCA/C 1993 1554 20x23x1562 Open / Open
302418 3000 G64T5LCA/2TC 1886 1554 20x23x1610 Domed / Open
302317 8000 G64T5LCA/S16/2TC 2678 1554 20x23x1610 Domed / Open
302509 3000+ GIA1564T6LCA/2S13/CB-021 2940 1564 25x28x1950 Domed / Flared
793923 GIA1002T6LCA/2S13/CB-021 2932 1002 25x28x1016 Domed / Flared
794113 GIA672T6LCA/2S13/CB-21 2933 672 25x28x699 Domed / Flared
IDI
G64T5LCA/PT-3″/2W/B/C 2551 1554 22×24.5×1626 Domed / Open
59619-G09 Aquaray 40 VLS G64T5LCA/PT-18″/2W/B/C 3095 1554 22×24.5×1702 Domed / Open
G64T5 LCA/PT-24″/2W/B/C 2577 1554 22×24.5×1702 Domed / Open
61645-G10 Aquaray 40 HO VLS G64T5LCA/S16/PT-18″/2W/B/C 2026 1554 22×24.5×1702 Domed / Open
WEDECO / ITT
SLR2581 GIA881T8LCA/2S18/CB-006 2022 881
SLR25113 GIA1200T8LCA/2S18/CB-006 2015 1200
SLR25143 GIA1500T8LCA/2S18/CB-006 2016 1500
XLR-20 GIA985T9LCA/2S18/CB-024 3105 985
SLR32143 TAK55 GIA1495T10LCA/2S18/CB-012 3119 1495 44x48x1514A01
SLR32143HP GIA1512T9LCA/2S18/CB-012 2848 1512 44x48x1514A01
XLR-30 XLB GIA1512T9LCA/2S18/CB-024 3027 1512 44x48x1514A01

Disclaimer: Neither TROJAN TECHNOLOGIES, IDI, WEDECO nor FISHER PORTER have sponsored, endorsed or approved these or any other replacement lamp.

QUARTZ SLEEVE FABRICATION

Our sleeves are manufactured from 99.9% pure fused quartz. This material allows maximum transmission of the UV rays and provides increased wear resistance.

Quartz sleeves – main features:

  • Available in a wide variety of lengths and diameters.
  • Cut to the required lengths.
  • Bent, polished, spliced, flared – as per requirements from individual customers.
  • Other additional production operations are also available upon request.

ADDITIONAL INFORMATION

LONG-LIFE COATED LAMPS versus STANDARD UNCOATED – COMPARISON:

We also offer a full range of the germicidal lamps with internal coating. This coating functions as a barrier between the mercury vapours and the internal surface of the lamp tube, making the lamp more resistant against “solarization” (= darkening) thus resulting in the following benefits for the customers:

  • Extended life and more constant performance over the whole life of the lamp.
  • Higher UVC output and intensity toward the end of life cycle.
  • Reduced mercury content.
  • Lower equipment costs by lower number of lamps required.

VALUE-ADDED SERVICES FOR OUR CUSTOMERS:

  • PROPRIETARY PLASTIC / CERAMIC BASES – We have accumulated a wide range of tooling for the standard plastic and ceramic bases, so it is highly likely that we already have the configuration you’ve been using. In addition to this, we are able to design and produce any new types of bases you may require. Our in-house capabilities allow us to:
    • Easily and effectively determine each specific product.
    • Match the required pin configuration.
    • Substantially reduce the lead-time from the initial design to actual production.
  • MARKING OF LAMP TUBES – As a standard, we etch each lamp tube with a code showing the date of manufacture and caution remark. If you require any additional markings, please let us know.
  • MARKING OF LAMP BASES – Each base can be marked with a variety of information, e.g. logo, product number, country of origin, re-reorder information, etc. For the ceramic bases we use single or multi-colour onlay bonded onto the base at high temperature, resulting in durable and clear marking and very good product appearance.

MECHANISM OF GERMICIDAL ULTRA VIOLET LIGHT DISINFECTION:

The narrow band of UV light lying between the wavelengths of 200 to 300 nm has often been called the germicidal region because UV light in this region is lethal to micro-organisms given the Exposure Time to achieve the required Fluence / Dose (mJ/cm2) Value to kill the Micro-organism which includes: Bacteria, Protozoa, Viruses, Moulds, Yeasts, Fungi, Nematode eggs and Algae.

The most destructive DNA / RNA wavelengths are around 260 to 265 nm which is very close to the wavelength of 254 nm produced by Low-pressure Germicidal Ultra Violet Lamps. As an example, the ability to kill the faecal coliform bacteria Escherichia coli, is directly related to the ability of its genetic material (i.e., nucleic acid) to absorb UVC light. UVC light causes molecular rearrangements in the genetic material of micro-organisms and this prevents them from reproducing. Most micro-organisms have relatively short life cycles and therefore depend on rapid reproduction to sustain and grow their population. Therefore, if a micro-organism cannot reproduce then it is considered to be dead. Normally when DNA replicates, the Thymine (T) must join the Adenine (A), and the Cytosine (C) must join with Guanine (G). When DNA is exposed to Ultraviolet Light at the wavelength of 254 nm, an error occurs in the replication process. The Thymine forms a dimer, that is, a double bond between the Thymine molecules. This error prevents the Micro-organism from reproducing properly, so eventually it dies.

Germicidal Ultra Violet Light Disinfection is Energy (Irradiance) x Time (In Seconds) = Fluence (Dose) Value (mJ/cm2). It is a non-ionising form of radiation; it will not pass through anything solid.

It does not matter what the Disinfection application is, be it for Air, Water, or a Surface, the Micro-organism(s) that are required to be controlled must be known, along with the Log Reduction, so the Fluence / Dose Value (mJ/cm2) can be established. Once the Fluence Value is known, then and only then can the type of UVC Lamp(s) necessary to achieve it be determined.

Germicidal Ultra Violet Light Disinfection is a complex technology, you are dealing with a non-ionising form of radiation and it is easily absorbed and poorly reflected by most materials. The key is always, you must know the Fluence Value and actually achieve it, to be able to kill the Micro-organism(s) for each application.

Definitions:
Sanitation –    2 to 3-Log Reduction
Disinfection –  5 to 6-Log Reduction
Sterilisation –  Absolute (Refers to any process that removes, kills, or deactivates all forms of life        in particular referring to Micro-organisms)