深
深
圳
圳
市
市
柯
柯
迪
迪
达
达
电
电
子
子
有
有
限
限
公
公
司
司
S
S
H
H
E
E
N
N
Z
Z
H
H
E
E
N
N
K
K
E
E
D
D
I
I
D
D
A
A
E
E
L
L
E
E
C
C
T
T
R
R
O
O
N
N
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C
C
S
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C
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.
.
,
,
L
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3
http://www.kedida.com.cn/
*Self- Checking Feature
(Executing the function automatically after the meter is power on each time)
1. Press the ON/OFF key to turn on the meter, Self- Checking program will be auto-started with Full screen display.
2. the type of the meter will be displayed: 6821, then , the meter is ready for use.
3. the default mode is pH mode after the date of the manufacture.
4. The test mode will be same with the previous use.
*
pH Mode
1. Press the ON/OFF key for 3 seconds, until the
“
pH
”
display on the screen.
2. Then press CAL to confirm, and the meter is ready to test in pH mode.
*
ORP Mode
1. Press the ON/OFF key for 3 seconds, until the
“
pH
”
display on the screen.
2. Press HOLD key to select
“
ORP
”
on the screen.
3. Then press CAL to confirm, and the meter is ready to test in ORP mode.
*
Backlight Mode
1. Press the ON/OFF key for 3 seconds, until the
“
pH
”
display on the screen.
2. Press HOLD key to select
“
LED
”
on the screen.
3. Then press CAL to confirm the backlight mode.
4. Power off the meter to close the backlight mode.
*
Hold Feature
Press
HOLD
to freeze the current reading, and „HOLD‟ will be appeared on the LCD. Press
HOLD
again to release the
hold mode.
*
Restore factory defaults
1. If the meter is out of order, Press the HOLD key for 3 seconds, until the
“
CLR
”
display on the screen, release the
HOLD key and the factory setting is ready.
2. The meter needs to recalibrate for pH measurement after the factory setting, but can be used directly for ORP
measurement.
*
Automatic temperature compensation (ATC)
The product is capable of measuring with automatic temperature compensation when “ATC” displays on the screen.
*
℃
/
℉
Interchangeable
The default mode is
℃
, press CAL key to switch to
℉
.