Page 2
Introduction Thank you for your purchase of the MT-4617 Light Intensity Meter designed and manufactured by our company. This meter will with proper use, provide years of reliable service; therefore, it is recommended that the user read carefully the user manual before using the light meter and keep it in right place for reference.
Page 3
Table 2: Warning message It indicates that incorrect operation will lead to serious injury or even fatal Warning accidents indicates that incorrect operation negligence will lead to meter damage or Notice wrong measurement results, etc. Operation suggestions or prompts Tips Operation considerations User should observe the following notices to guarantee safe operation and obtain optimum performance.
Page 4
To avoid faults, please DO NOT place the light meter in following environments: 3:Use Notice 1. The operation temperature range for the light meter is -10-50℃ (14-122°F). 2. In order to avoid damage, especially falling accidents, handling and use should be avoided during severe mechanical vibration. 3.
Page 5
6. Keep the meter out of direct sunlight to guarantee its normal operation and long-term service life. 7. If the meter is subject to effect of intensive electromagnetic field, its functions will be affected. 8. Only use batteries specified in technical data. 9.
Page 6
So, a professional and convenient light meter can provide you with a reference regarding illuminance. The MT-4617 Light Intensity Meter has a friendly human-machine interface and can be activated by a simple press of keys. The buzzer activates upon key press to notify that it is effective.
Page 7
Outrange indication (When the measured value exceeds the current range, LCD will display the signal “OL” to indicate that the range is overreached); High precision. Measurement range (0.00~200000Lux); Low battery indicator; Key tone and mute selection; ...
Page 8
1. Opto-sensor protection cover 2. Opto-sensor 3. LCD display screen 4. Compound key for main power and touch tone: Power on/off: Short press the key to activate the instrument and long press for 1 second to shut it down. Touch tone on/off: Under working mode short press the key to turn the touch tone on and off.
Page 9
LCD display interface Prompt for manual range switching mode Prompt for data hold mode The analog bar shows the current measurement value information. The digit shows the current measurement value information. Lux unit FC unit Prompt for auto measurement mode Prompt for peak value measurement mode Prompt for low battery 10.
Page 10
3: Do not use the light meter in environments with intense infrared or ultraviolet rays! Tips 1: The opto-sensor of this meter is designed by simulating the sensitive curve of light obtained through human eyes. The spectral coverage is between 320mm and 730mm. When it is used for measurement within the infrared range, there will be a large data deviation.
Page 11
Remove the protection cover of the MT-4617 multi-functional light meter sensor and place it at right angle to the light source. Press and hold the MT-4617 power key ④ for a short time to power on the light meter. The LCD screen will illuminate (about 5 seconds) with the buzzer beeping twice, and “AUTO”...
Page 12
Press and hold the REL/PEAK key ⑧ of the MT-4617 for a short time, “REL” will appear on the top left position of the LCD interface, indicating the activation of the relative value measurement mode. Press and hold the key ⑧ for a short time again, the device will exit the relative value measurement mode and return to the original measurement mode, and “REL”...
Page 13
Tips 1: The reference position of light source test is at top of sphere surface under light. 2: In various measurement modes, analog bar in the middle of the LCD screen will change with figures of Nixie tubes. 3: When reading, existing data can be locked by pressing and holding “HOLD/ZERO”...
Page 14
Figure 3-1-1 20.00Lux interface 200.0Lux interface 2000Lux interface 20000Lux interface 200000Lux interface Tips 1: Only in peak value measurement mode, relative value measurement mode and max/min value inquiry mode, will it be effective to press RAN key for a short time.
Page 15
2: In relative value measurement mode and max/min value inquiry mode, press and hold the key for one second, it will return to auto switchover of range. 3: In peak value measurement mode, data hold mode and zero calibration modes, it will be effective to press and hold RAN key for a long time. 4: In this mode, when measurement value exceeds present range, “OL”...
Page 16
Figure 3-1-2A Figure 3-1-2B Figure 3-1-2C 1: Only in auto measurement mode, peak value measurement mode, max/min value inquiry mode and data hold mode, it will be effective to press and hold REL/PEAK key for a short time. 2: In non-zero calibration mode, press and hold “REL/PEAK” for one second, the device will enter the peak value measurement mode.
Page 17
Tips In non-zero calibration mode, press and hold “MAX/MIN” key for a short time to use the max/min value inquiry functions; Application of data hold and zero calibration mode Press and hold “HOLD/ZERO” key for a short time, “HOLD” will appear on the top left position of the LCD interface (as shown in 3-1-4A), then the device will enter the data hold mode;...
Page 18
Zero-calibration can be made in any mode. Other Functions Auto power-off If there is no action on keys of the MT-4617 for a long time, the meter will automatically power off about 10 minutes later. Technical Data ‧Temperature range: Operation:-10~50°C, max 80 % HR(Non-Condensed)...
Page 19
Cosine angle deviation characteristics Cosine angle Deviations 30° ±2% 60° ±6% Tips: cosine angle is corrected in accordance with JIS C 1609:1993 and CNS 5119 Grade A General Specification. ‧Luminous sensitivity characteristics: Maintenance and Service Service Notice When the meter seemingly fails during operation, following steps should be followed to check the fault problem: 1: Check batteries.
Page 20
2: Do not use benzene, alcohol, acetone, ethyl ether, ketones, thinners and gasoline, etc. in cleaning, because they will transform or fade the light meter. 3: The light meter can only be used again when it is completely dry after cleaning.
Page 21
2: Use batteries specified in technical data only. 3: If the meter is not to be used for a long time, take out the batteries. In case the meter is polluted due to battery leak, the meter should be sent by post to the manufacturer for cleaning and checking.
Need help?
Do you have a question about the MT-4617 and is the answer not in the manual?
Questions and answers