QUADRAN™ 365 Series

Dual-Intensity, Multi-LED, Broad-Beam Fluorescent Inspection Lamps!

Not ASTM compliant

QUADRAN™ 365 Series NDT lamps feature four ultra-hi-flux UV-A LEDs plus a convenient white light LED to quickly switch between fluorescent inspection and flaw location. A unique dual-intensity feature provides both high and standard UV-A and white light output for added versatility.

The lamps’ broad-beam configuration produces an extremely wide coverage area, making them ideal for both handheld and in-line applications. Models are available either with or without integral black light filters to meet your specific inspection requirements.

Where to Buy
  • Dual-intensity capability: High setting produces a nominal steady-state UV-A intensity as high as 8,000 μW/cm2; standard setting produces a nominal steady-state intensity of 4,500 μW/cm2, both at 15 inches (38 cm)

  • Extremely large coverage area of up to 6 inches (15 cm), with a minimum UV-A intensity of 1,200 μW/cm2
  • Low visible light emission — less than 2 foot-candles (22 lux)

  • Conveniently located rocker switches for quick and easy control of light sources

  • Built-in fan keeps LEDs cool to maintain optimum light output during extended use

  • Rubber bumper with Borofloat® glass lens protects LEDs from damage

  • Rugged, modular construction allows for easy field serviceability

  • Lamp handle pin receptacle allows for easy attachment of various Spectroline® mounting accessories for in-line inspection applications (accessories sold separately)

  • Choice of standard 8 foot (2.4 m) or extra-long 20 foot (6.1 m) heavy-duty power cord with AC plug and rubber boot. Also available: Optional industrial power supply or in-line power supply with cord sets (sold separately). All power supplies available in 120V, 230V, 240V and 100V models.

  • UV-absorbing spectacles and soft carrying case included


QDR-365A Model



When the QDR-365A is in high
mode, the lamp provides a nominal steady-state UV-A intensity of 8,000 μW/cm2at 15 inches (38 cm).
When switched to the standard
intensity mode, the QDR-365A
provides a nominal steady-state
UV-A intensity of 4,500 μW/cm2
at 15 inches (38 cm). In addition, the lamp has a high/low switch to control the white light LED output.
UV-A Beam Profile
(click to enlarge)


(click to enlarge)


The QUADRAN™ 365   can be quickly mounted for in-line inspections
using various Spectroline®  accessories (FA-100 flexible arm shown).
QUADRAN™ 365  faceplate shown with (top) and without (below) integral black light filters.
QUADRAN™ 365 S-Series lamps can be quickly mounted for in-line inspections using various Spectroline® accessories (FA-100 flexible arm shown).

Also Available:

QUADRAN™ 365 M-Series portable, battery-operated AC/DC lamp kits. Include QUADRAN™ 365 UV lamp, rechargeable NiMH battery pack, AC and DC cord sets, smart AC charger, UV-absorbing spectacles and soft carrying case.

UV Switch Setting
UV-A (365 nm)
intensity at
15 inches
(38 cm) ➀
Visible light
(at minimum
2000 μW/cm2)
4,500  μW/cm2
< 1 foot-candle
(11 lux)
5 in
(13 cm)
High 8,000  μW/cm2
< 2 foot-candles
(22 lux)
6 in
(15 cm)
4,500  μW/cm2
< 0.5 foot-candle
(5 lux)
4 in
(10 cm)
7,000 μW/cm2
< 1 foot-candle
(11 lux)
6 in
(15 cm)



Light Source: 4 UV-A LEDs, 1 White Light LED
Lamp Style: Pistol Grip
Lamp Head (WxH): 6 x 5.5 in (15 x 14 cm)
Length: 10 in (25 cm)
Weight: 3 lb (1.36 kg)
White Light LED Intensity:
High setting: 300 foot-candles (3,229 lux)
Low setting: 10 foot-candles (108 lux)


Power Requirement

AC lamp
(QDR-365A, QDR-365BLA) 120VAC* power cord supplied with lamp
AC/DC lamp
(QDR-365MA, QDR-365MBLA) 120VAC*/12VDC
Battery Pack:

12V, NiMH (rechargeable)
Run time
High intensity: 2.5 hours (continuous)
Standard intensity: 4.5 hours (continuous)
Charge time
2 hours


* Also available in 120V, 230V, 240V and 100V versions

All UV-A intensity readings were taken with Spectroline® AccuMAX™ Series meter, and are factory set to the values shown

127427 Standard, 8 foot (2.4 m) AC power cord
127431 Extra-long, 20 foot (6.1 m) AC power cord
127435 Power cord with 12V DC adapter for “M” series lamps
127922 Particulate filter assembly
127944 Standard faceplate
128094 Faceplate with integral black light filters
Bench mount
BP-30 Battery pack with 12V rechargeable NiMH battery
BR-150A Smart AC charger
CC-400 Soft carrying case
FA-100 Flexible arm
FP-550 Rubber bumper with Borofloat® glass
PS-200A Industrial power supply with cord set
PS-300A In-line power supply with cord set
W-6 Bench mount with pin
WM-100 Wall mounting bracket
UL-100 UV-A lens
UVS-30 UV-absorbing spectacles