Venture/ Parmar PB500K445 – Limited Stock

Other information for the PB500K445

High-Pressure Sodium (HPS) lamps are highly efficient, long-lasting, and powerful, emitting a distinct yellow-orange, red-spectrum light ideal for plant flowering (80-140 lumens per watt, 24,000+ hour lifespan). They are widely used in commercial hydroponics for growth and formerly for municipal street lighting. While effective, they require specialized ballasts, have poor colour rendering, and are being replaced by LEDs.

Key Features and Aspects of HPS Lamps

Technology & Operation: HPS lamps are high-intensity discharge (HID) lights that use a mixture of xenon (as a starter gas), sodium, and mercury to produce light. They require a high-
voltage pulse from a ballast to start, and often take time to reach full brightness.

Horticultural Use: They are a staple in hydroponics for the flowering and fruiting stages due to their red-orange spectrum. Common types include 600W (most popular/efficient) and 1000W double-ended (DE) lamps, often paired with reflectors and digital ballasts.

Performance Metrics: They provide 80-140 lumens per watt and have a lifespan of 20,000 to 24,000+ hours.

Advantages:

• High efficiency for both photosynthesis and general lighting.
• Highly durable and consistent in output.
• Provides beneficial heat for plants in cold environments.

Disadvantages:

Poor Colour Rendering Index (CRI of 20-30), meaning colours look unnatural.
Require an external ballast.
Being phased out for outdoor, municipal, and residential applications in favour of more energy-efficient LED technology.

Types: Single-ended and double-ended (DE).
Metal halide (MH) lamps are high-intensity discharge (HID) lights that produce intense, white light by passing an electric arc through vaporized mercury and metal halide salts. Known for high efficacy, excellent colour rendering, and long life (10,000–30,000 hours), they are ideal for industrial, commercial, sports arena, and street lighting.

Key Details About Metal Halide Lamps:

Technology & Operation: They use an arc tube (quartz or ceramic) inside an outer glass bulb, which requires a ballast to operate. The arc heats the mixture, creating a bright, white light close to natural daylight.

Applications:

Commercial/Industrial: High-bay factory lighting, warehouse, and retail spaces.

Outdoor: Parking lots, stadiums, and street lighting.

Horticulture: Used for the vegetative growth phase in plants due to their blue-white light spectrum.

Advantages:

High Lumen Output: Very bright, efficient light source.

Colour Rendering: Excellent color quality, generally around 4,000K, making them superior to high-pressure sodium (HPS) for color accuracy.

Disadvantages:

Warm-up Time: They need time to reach full brightness.

Energy Consumption: Less efficient than modern LED alternatives.

Maintenance: Shorter lifespan compared to LEDs; colour shifts over time.

Variations:

Ceramic Metal Halide (CMH/CDM): Use ceramic arc tubes for 10–20% higher efficiency, better colour stability, and longer life (up to 24,000 hours).

Pulse Start: Newer technology that improves start-up time and lifespan.

Venture Lighting acquired the Parmar brand and offers a wide range of lighting control gear, such as ballasts and ignitors, for various applications, including specialist uses like road and tunnel lighting. Parmar was originally a manufacturing company formed by Mr. Parry and Mr. Martin, and the “Venture Parmar” range is known for its quality and performance in both electromagnetic and electronic HID control gear

Venture Lighting

Industry leader: A global leader in innovative lighting solutions, specializing in Ceramic Metal Halides, and more recently, LED products.

Product range: Offers high-performance lamps and control gear for various applications, including both HID and LED technologies.

Innovation: Known for a history of creating new systems, such as the Uni-Form® pulse start system.

Parent company: Venture Lighting is part of Advanced Lighting Technologies, Inc. (ADLT).

Parmar

History: The brand was originally established by Mr. Parry and Mr. Martin, and was later acquired by Venture Lighting.

Product specialization: Known for high-quality, bespoke, and specialist control gear.

Venture Parmar brand: This range combines Venture’s expertise with Parmar’s legacy and is found in specialist applications like those used in explosive atmospheres, tunnels, and conventional commercial/industrial settings.

Relationship between Venture Parmar

The acquisition of the Parmar brand by Venture Lighting in the late 1990s allowed Venture to build an extensive range of HID control gear.

The “Venture Parmar” name is now used to denote the combination of both companies’ control gear products.