7
6
INITIAL PREPARATION
Each meter is supplied complete with batteries and 12 VDC adapter.
To power the instrument with batteries, remove the back cover,
unwrap the batteries and install them while paying attention to the
polarity.
If using external power supply, connect the 12 VDC adapter to the
power adapter plug.
To prepare the instrument for use, connect the pH or ORP electrode to
the connector located on the top of the instrument.
To switch the meter on, press the ON/OFF key.
The batteries charge status or "LINE" message
(if external power adapter is connected) will be
displayed on the LCD for a few seconds.
The meter is now ready to operate.
To maximize battery life, the meter is automatically switched off after 5
minutes of non-use (this feature can be disabled through setup code
20). To reactivate the instrument press the ON/OFF key.
Before proceeding with pH measurements follow the calibration proce-
dure.
Note:
When the use of an alternate function (SETUP, CAL, CAL DATA
and CALT) is requested, press and hold the ALT key first and
then the second desired key.
Note:
To prevent damage to the electrode, remove it from the sample
before turning the meter off.
When the meter is OFF, detach the electrode from the meter
before immersing it in the storage solution.
SPECIFICATIONS
Range
pH
-4.00 to 19.99 pH
mV
±600.0 mV ; ±2000 mV autoranging
Temp.
-20 to 120 °C
Resolution
pH
0.01 pH
mV
0.1 mV between ±400 mV
0.2 mV from
+
400 to
+
600 mV
0.2 mV from
-
400 to
-
600 mV
1 mV outside
Temp.
0.1 °C from -10 to 120 °C / 1°C below -10°C
Accuracy
pH
±0.01 pH
(
@
20°C/68°F)
mV
±0.2 mV between ±400 mV
±0.4 mV from
+
400 to
+
600 mV
±0.4 mV from
-
400 to
-
600 mV
±2 mV outside
Temp.
±0.4 °C from 0 to 70°C / ±1°C outside
Typical EMC
pH
±0.02 pH
Deviation
mV
±1 mV between ±600 mV
±2 mV outside
Temp.
±0.4°C
pH Calibration
Automatic 1 or 2 points with 5 memorized
buffers (4.01, 6.86, 7.01, 9.18 and 10.01 pH)
mV Calibration
Automatic 2 points at 0, 350 mV or 3 points
at 0, 350 and 1900 mV
Temperature
Automatic from -20 to 120°C
Compensation
pH Electrode
HI 62920
Amplified, with built-in temperature
sensor, matching pin, DIN connector and Tita-
nium body (included)
ORP Electrode
Amplified ORP electrode with DIN connector
(see accessories)
Input Impedance
10
12
Ohm
Infrared optical
through
HI 7920
interface cable
interface towards
HI 504910
Power supply
4x1.5V AA (IEC LR6) batteries/300 hours typical life
or 12 VDC adapter
Casing
IP 67
Environment
0 to 50°C / 100% RH
Dimensions
196 x 80 x 60 mm (7.7 x 3.1 x 2.4")
Weight
500 g (18 oz)