9.2 Parameter setting instruction
When turned off, long press
to enter parameter setting mode; Press
to switch from P1-
P2-
…P6. Press
, the parameter flashes; Press
to choose parameter Press
to
confirm; Long press
to power off.
A) High-Low Measurement Heads-Up Examples (P1 and P2)
Heads-Up when measured value
≤120 mV:
Preset low value = 120 mV, highest value = 1000 mV, when measured value
≤ 120 mV (stable
icon
displays on LCD); Red back-lit heads-up displays.
Heads-Up when
measured value ≥ 150 mV:
Preset high value = 150 mV, lowest value = -1000 mV, when measured value
≥ 150 mV
(stable icon
displays on LCD); Red back-lit heads-up displays.
Heads-Up when measured value in range of 120 mV and 150 mV:
Preset low value = 120 mV, highest value = 150 mV,
when the measured value <120mV or
>150mV
(stable icon
displays on LCD); Red back-lit heads-up displays.
B) Automatic lock (P3):
Select “On” to activate auto lock function. When reading is stable for more than 10
seconds, the tester will lock the value automatically, and HOLD icon will display on
LCD. Press
key to cancel auto hold.
C) Backlight (P4)
“Off”-turn off backlight, “On”-turn on backlight, “1”- backlight will last for 1 minute.
D) Temperature Unit (P5)
Select C˚ or F˚, the factory default is ˚C.
E) Factory default setting (P6)
Select “Yes” to recover instrument calibration to theoretical value (pH value in zero potential is
7.00, slope is 100%), parameter setting return to initial value. This function can be used when
instrument does not work well in calibration or measurement. Calibrate and measure again
after recover the instrument to factory default status.
10 Technical Specifications
ORP
(mV)
Measuring Range
±1000 mV
Resolution
1 mV
Accuracy
±0.2% F.S
Temp.
Measurement Range
0
– 50 ˚C
Resolution
0.1 ˚C
Accuracy
±0.5 ˚C
