MJ-HE/JZ-140423
overvieW
1. photo detector, removable with 1 m cable.
2. LCD display: 3-1/2 digits with a maximum reading of 1999,
and the indicating sign of "LuX, kLuX, FC, kFC",
Data-hold"MaX", Low battery " ".
3. back light button (auto off time: 15 s.)
4. range switch: pressing the range key changes 200LuX,
2000LuX 20kLuX and 200kLuX ranges.
5. power oFF.
6. LuX.
7. FC (foot candela).
8. Max-Hold, press to lock the max. reading.
9. Data-hold switch: pressing the HoLD key locks the reading.
press the HoLD key again to return to standard mode.
usage
1. remove the sensor cap and place the sensor at the measurement location.
the sensor can be fixed in, or placed up to 1 meter from the instrument.
2. Choose LuX or FC using the switch.
3. if “1” is shown in the display, adjust the range by pressing the “range” key.
toggle between 200LuX, 2000LuX, 20kLuX and 200kLuX.
4. the display shows the measured reading. Lock the reading by pressing the
“HoLD” key. You can also lock it by pressing the “MaX” key.
5. put the sensor cap back in place when finished.
speCiaL sensitivitY CHaraCteristiCs
1. to the detector, the applied photo diode with filters makes the spectral sensitivity charactersitics almost meet
C.i.e.
2. photopic curve v (
∆
) as the following chart described.
100 % Relative Sensitivity
Spectral Sensitivity
80 %
V (
∆
)
60 %
40 %
20 %
0
400
500
600
700
Wavelength (nm)
MaintenanCe
1. the white plastic disc on the top of the detector should be cleaned with a damp cloth when necessary.
3. Do not store the instrument where the temperature or humidity is excessively high.
Battery check-up and replacement
1. When the battery is low, the display shows “ ”.
2. Loosen the screws fixing the battery door and remove it.
3. replace the old battery.
4. put the battery door back in place.
HoLD
FC
LuX
MaX
range
FC
LuX
oFF
lux
MAX
1.
2.
3.
4.
5.
7.
6.
8.
9.