Dostmann Lm37 Luxmeter User Manual

LM37 Luxmeter
User Manualwww.dostmann-electronic.de

Parts

1. Light detecting surface
2. Light detecting surface
3. LCD display
4. Power button
5. CAL button :
   Quick enter measuring mode During the measuring mode, press CAL button and the value of zero will be auto-displayed.
6. The user may hold the present reading and keep it the LCD display by pressing the “HOLD” button. To release the held data operation by pressing it again.
   The user can press the button when the value is hard to read, such as measuring in the dark place.
7. Umschaltaste fc/lx / fc/lx selector button (fc = Lumen per Feet/fx Lumen per m²=Lux)
8. Range selector button :
   This button is used to select automatic range and manual range. Manual range enables an arbitrarily four range to be set. If a fixed range is used, measuring values will  response quickly. The user can read easily. The range configuration is as follows: Auto , 40 , 400 , 4000 , 40000 lx Auto , 4 , 40 , 400 , 4000 fc
9. Battery cabinet cover
10. Indicate low battery voltage
11. Measuring readout
12. Indicate automatic range mode
13. Indicate meter in automatic power off mode This Light Meter provides an automatic power-off function in order to avoid using up the battery if you forget to turn off  the power. The meter will power off itself after 30 minutes if no key is operated.
14. Indicate data hold
15. Unit of illuminance
16. Indicate range
17. Indicate range Note: 1fc=10.76lx

Kindly note/Safety Instructions

• Read the following safety information carefully before attempting to operate or service the meter.
  Use the meter only as specified in this manual; otherwise, the protection provided by the meter may be impaired.
• Environment Conditions: Altitude up to 2000 meters, Relative humidity 90% max., Operation Ambient 0 to 40°C
• Check if contents of the package is undamaged complete.
• For cleaning the instrument please do not use an abrasive cleaner only a dry piece of soft cloth. Do not allow any liquid into the interior of the device.
• Please store the measuring instrument in a dry and clean place.
• Avoid any force like shocks or pressure to the instrument.
• No responsibility is taken for irregular or incomplete measuring values and the ir results, the liability for subsequent damages is excluded!
• Do not use the device in explosive areas.
  Danger of death!
• Keep these devices and the batteries out of reach of children.
• Batteries contain harmful acids and may be hazardous if swallowed. If a battery is swallowed, this can lead to serious internal burns and death within two hours. If you  suspect a battery could have been swallowed or otherwise caught in the body, seek medical help immediately.
• Batteries must not be thrown into a fire, short-circuited, taken apart or recharged. Risk of explosion!
• Low batteries should be changed as soon as possible to prevent damage caused by leaking.
  Never use a combination of old and new batteries together, nor batteries of different types.
• Wear chemical-resistant protective gloves and safety glasses when handling leaking batteries. ·

General Description

To ensure that you can get the most from it, we recommend that you read and follow the manual carefully before use.

Operation

Press the power button to turn on the power. No- tice that covering the light-detecting surface with the cap.
will auto-appear on the LCD display.
After appears, the meter enters the automatic zero adjustment. When automatic zero adjustment is complet disappears and “0.00 ” aappears.
After confirming the “0.00 ” display, remove the cap to start measuring. After the measurement has been completed, press the power button again to turn off the power, and  cover the light-detecting surface with the cap for protecting against stray light.

Note:
If appears, check the cap to make sure it is on properly.
Press and hold the HOLD button, and then power on the meter, release all button to disable the AUTO POWER OFF function.“”symbol will disappear on the LCD display.

Specifications

Measuring ranges:
0.00 to 39.99/399.9/3999/39990 lx
0.000 to 3.999/39.99/399.9/3999 fc
automatic/manual selection of range
Resolution : 0.01 lx ~ 10 lx ; 0.001 fc ~ 1 fc
Temperature characteristics: ±0.1%/°C
Response time: 0.5 sec.
Light detector: Si Photodiode
Operation temp./humidity:
0°C ~ 40°C (32°F ~ 104°F) 0 ~ 80%RH

Storage temp./humidity:
-10°C ~ 50°C (14°F ~ 122°F) 0 ~ 70%RH
Over range: “—-“ display
Power supply : one 9V battery, 006P or IEC 6F22 or NEDA 1604
Power life: Approx. 170 hours (Alkaline battery)
Dimensions: 196(L) X 54(W) X 33(H) mm
7.7(L) X 2.1(W) X 1.3(H) inch
Weight: Approx. 180g

Characteristics of relative visible-spectrum response:

Wavelength(nm)
Replacement of battery
When the battery voltage drops below the operating voltage , a“+- “ symbol will appear on the LCD display. In this case, replace a new battery immediately.

Explanation of symbols
This sign certifies that the product meets the requirements of the EEC directive and has been tested accordingto the specified test methods.

Waste disposal
This product and its packaging have been manufactured using high-grade materials and components which can be recycled and reused. This reduces waste and protects the  environment. Dispose of the packaging in an environmentally friendly manner using the collection systems that have been set up.

Disposal of the electrical device
Remove non-permanently installed batteries and rechargeable batteries from the device and dispose of them separately. This product is labelled in accordance with the EU Waste Electrical and Electronic Equipment Directive (WEEE). This product must not be disposed of in ordinary household waste. As a consumer, you are required to take end-of-life devices to a designated collection point for the disposal of electrical and electronic equipment, in order to ensure environmentally-compatible disposal. The return service is free of charge. Observe the current regulations in place!

Disposal of the batteries
Batteries and rechargeable batteries must never be disposed of with household waste. They contain pollutants such as heavy metals, which can be harmful to the environment and human health if disposed of improperly, and valuable raw materials such as iron, zinc, manganese or nickel that can be recovered from waste. As a consumer, you are legally obliged to hand in used batteries and rechargeable batteries for environmentally friendly disposal at retailers or appropriate collection points in accordance with national or local regulations. The return service is free of charge. You can obtain addresses of suitable collection points from your city council or local authority. The names for the heavy metals contained are: Cd = cadmium, Hg = mercury, Pb = lead. Reduce the generation of waste from batteries by using batteries with a longer lifespan or suitable rechargeable batteries. Avoid littering the environment and do not leave batteries or battery-containing electrical and electronic devices lying around carelessly. The separate collection and recycling of batteries and rechargeable batteries make an important contribution to relieving the impact on the environment and avoiding health risks.

WARNING! Damage to the environment and health through incorrect disposal of the batteries!