7650 UV & Light Monitor
(Made in UK)
The ELSEC 7650 UV & Light monitor measures and displays visible light (Lux or Foot candles), UV light (mW/M² and µW/lumen). This single instrument enables measurement of two parameters that cause damage to buildings, valuable objects, precious artifacts, documents etc: ultra-violet and visible radiation.
Traditionally UV has been measured in museums as the proportion of ultraviolet present. The damage is done by the total amount of UV falling on the object, so it is useful to be able to measure this directly. This makes the 7650 lux and UV meter essential for museum monitoring as it displays proportional UV (µW/lumen) and the total amount of UV (mW/M²) at the touch of a button.
- Ease of Use
Extra care has been taken to make the 7650 as easy to use as possible. Anyone can take measurements straight out of the box with little, if any, reference to the instruction manual. The appropriate button is pushed depending on the measurement required and the reading is taken. The unit automatically turns off 20 seconds after the last reading unless a button is held down for over 3 seconds, this causes continuous measurements to be taken until another button is pressed. The large OLED display enables an easy to use menu system to select the more advanced functions, change units etc.
- Visible Light
The amount of visible light is important, not only to check illumination in work areas, galleries etc. but also to control damage to light sensitive objects that is also caused by normal light. Measurements can be displayed as Lux or Foot-candles.
- Ultraviolet (UV)
For many years it has been recognized that one of the major causes of damage to museum objects and other sensitive objects, soft furnishings etc. is the fading and rotting effect of light on the object. The most damaging part of the illumination is its ultraviolet content.
- Units of Measurement for UV
Traditionally UV has been measured in museums as the proportion of ultraviolet present. This result is useful for checking a particular lamp or window because the proportion of UV does not change with the distance from the light source. Using a simple rule, the amount of UV on an object can be limited (it is usual to arrange that the proportion of UV should not exceed 75mW/lumen in museums). The damage is done by the total amount of UV falling on the object, so it is useful to be able to measure this directly, especially if non-standard amounts of illumination are required. The amount of UV should be as little as possible but in general should not exceed 20mW/M2.
- Visible Light
- Wavelength Range: 400-700nM (CIE Response). No correction require for different light sources.
- Power Range: 0.1-200,000 Lux (0.1-20,000 Foot-Candles)
- Resolution Lux: 1 for 0.1 up to 100
- Resolution Foot-Candles: 1 for 0.1 up to 100
- Accuracy: 5% ±1 displayed digit
- Ultraviolet (UV) Light
- Wavelength Range: 300-400
- Power Range: 2-10,000 mW/M2
- UV Proportion Range: 0-10,000uW/Lumen
- Angular Response: Cosine (Light and UV)
- Resolution UV : 1 for 0.1 up to 100
- Proportion of UV: 1uW/Lumen
- Accuracy: 15% ±1 displayed digit
- Display Type: 128x64 OLED display with automatic brightness control
- Functions: Hold/Max/Min, Lux/FC/UV
- Auto Off: Yes
- Power Source: 4 x NiMH AAA Type
- Power Charger: Input: 100-240V, 50-60Hz, Output: 5V (USB connector)
- Power Source Life: Approx. 25 Hours continuous use or 3,000 readings taking 30 seconds each
- Operating Temperature: 0-50C 0-99%RH, non-condensing
- Dimensions: 150 x 60 x 15mm
- Weight: 240g with batteries
- 7650 UV & Light meter
- User Manual
One Year Manufacturer Warranty