UV lamp power is characterized in terms of nominal total input wattage as well as nominal total UV output wattage. The nominal UV output power presents a sum of the SPD (spectral power distribution). It tends to differ between LP (low pressure) and HID (high intensity discharge) lamps. The ratio of input power to output power defines the actual efficiency of the lamp. Most LP lamps have efficiencies of 30 – 35%. Efficiencies of HID lamps are much lower (7-11%).

Most of the available UV lamps are identified by model numbers. These included coded information about the lamp. Usually, you can find lamp abbreviations on our lamp data sheets and they are comprised of six parts:

  1. Lamp nominal length
  2. Lamp nominal wattage
  3. Bulb diameter
  4. Shape of lamp
  5. Lamp base (base code)
  6. Circuit or special description

GPH287T5L/MNBP & GPHHA1554T6VH/4P

G
AA(AA)
BB(BB)
C
D(D)
E(E)
 / 
FF(FF)
(GG)
Denotes “Germicidal” Lamp
Two to Four Character “Operation” Indicator

Two Digits: Lamp Length in inches

Four Digits: Lamp length in mm

Denotes Tubular Design “T”

Denotes Tube Diameter (Outside Diameter)
Denotes Glass Type:
L = Low Ozone ProducingVH = Very High Ozone Producing
Spacer
Denotes Base Type
Denotes Connection Type
PH = Preheat
T5 = 5/8″ (15mm)
4P = 4 Pin
SE = Single Ended
HO = High Output
T6 = 6/8″ (19mm)
SL = Slimline
DE = Double Ended
CL = Cell Lamp
T8 = 8/8″ (25mm)
MNBP = Mini Bi-Pin
U = U Lamp
T10 = 10/8″ (32mm)
MDBP = Med Bi-Pin
PHA = Preheat Amalgam
T12 = 12/8″ (38mm)
PHHA = Preheat Amalgam Horizontal High Output
PHVA = Preheat Amalgam Horizontal or Vertical

Two to Four Character “Operation” Indicator:

  • G = Germicidal
  • PH = Pre- Heating
  • HO = High Output
  • CL = Cell Lamp
  • U = U Lamp
  • PHA = Preheat Amalgam
  • PHHA = Preheat Amalgam Horizontal High Output
  • PHVA = Preheat Amalgam Horizontal or Vertical

Length:

  • 2 digits: in inches (total length in installation, for sleeve length)
  • 3 digits: in mm (base-to-base length)

Tubular Design and Diameter:

  • T = Tubular (1/8 inch)
  • 5 = 5/8 inch (15mm)
  • 6 = 6/8 inch (19mm)
  • 8 = 8/8 inch (25mm)
  • 10 = 10/8 inch (32mm)
  • 12 = 12/8 inch (38mm)

Glass Type:

  • L = low ozone
  • VH = very high ozone
  • H = spliced lamps combinng “L” and “VH” glass
  • / = spacer

Base Type:

  • 4P = 4- pin circline base, single ended
  • MDBP = Medium Bi- pin (G13; 12.7mm)
  • MNBP = Mini Bi- pin (G5; 5mm)
  • SL = Slimline = SP = Single Pin

Connection Type:

  • SE = Single Ended
  • DE = Double Ended

This post is also available in: Chinese (Simplified)