6
7
FUNCTIONAL DESCRIPTION HI8915
pH
ON
OFF
HOLD
mV
°C
pH
HI 8915
ATC
pHmeter
+
-
mV OUTPUT
SLOPE
4.01
10.01
OFFSET
6.86
7.00
CALIBRATION
1
7
2
9
4
10
5
11
8
3
6
12
1) BNC socket for combination pH or ORP electrodes.
2) Liquid Crystal Dysplay (LCD).
3)
HOLD
key, to freeze the reading on the display.
4)
mV
key, to display the mV (ORP) readings when using an
ORP electrode; or the mV equivalent to the pH values when
using a pH electrode.
5)
OFFSET
trimmer for OFFSET calibration of pH
6)
+
recorder output (mV output, positive connection).
7) Phono plug socket for
HI7669AW
temperature probe.
8)
ON/OFF
key, to switch the instrument on or off.
9)
pH
key, to display the pH value.
10)
°C
key, to display the temperature measurement (when the
temperature probe is disconnected, the LCD will show 25°C).
11)
SLOPE
trimmer for SLOPE calibration of pH.
12)
-
recorder output (mV output, negative connection).
SPECIFICATIONS HI8915
HI 8915
Range
pH
0.00 to 14.00
mV
±1999
°C
0.0 to 100.0
Resolution
pH
0.01
mV
1
°C
0.1
Accuracy
pH
±0.01
(@20°C/68°F)
mV
±1
°C
±0.5
Typical EMC
pH
±0.02
Deviation
mV
±1
°C
±0.8
pH Calibration
Manual 2 point through
offset and slope trimmers
Offset Calibration
±1 pH
Slope Calibration
from 85 to 105%
Temperature
Automatic from 0 to 70°C (32 to 158°F)
Compensation
or fixed at 25°C (77°F)
with temperature probe detached
pH Electrode
HI 1230B
combination, double-junction,
gel-filled with BNC connector
and 1 m (3.3') cable (
included
)
Temperature
HI 7669AW
(
included
)
Probe
Input Impedance
10
12
ohm
Recorder Output
100 mV/pH
1mV/mV
10mV/°C
Battery Type
1 x 9V
Life
100 hours of continuous use
Environment
0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Dimensions
185 x 82 x 53 mm
(7.3 x 3.2 x 2.1’’)
Weight
265 g (9.3 oz.)
