User Guide

9
FUNCTIONAL DESCRIPTION HI 8915
1) BNC socket for combination pH or ORP electrodes.
2) Liquid Crystal Dysplay (LCD).
3) HOLD to freeze the reading on the display.
4) mV 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 HI 7669AW temperature probe.
8) ON/OFF to switch the instrument on or off.
9) pH to display the pH value.
10) °C 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).
pH
ON
OFF
HOLD
mV
°C
pH
HI 8915
ATC
pHmeter
+-
mV OUTPUT
SLOPE
4.01
10.01
OFFS ET
6.86
7.00
CALIBRATION
1
7
2
9
4
10
5
11
8
3
6
12
48
HI 1330B / HI 1310S
Glass-body, semimicro, single junction, refillable, combination pH
electrode. Use: laboratory.
HI 1331B / HI 1311S
Glass-body, semimicro, single junction, refillable, combination pH
electrode. Use: flasks.
HI 1230B / HI 1210S
Plastic-body (Ultem
®
), double junction, gel-filled, combination pH
electrode. Use: general purpose.
HI 2031B / HI 2020S
Glass-body, semimicro, conic, refillable, combination pH electrode. Use:
semisolid products.
HI 1332B / HI 1312S
Plastic-body (Ultem
®
), double junction, refillable, combination pH
electrode. Use: general purpose.
Ultem
®
is registered Trademark of "General Electrics Co."
120 mm
4.7"
5mm
0.2"
5mm DIA
0.2"
"S" VERSION
HI 1330
210 mm
8.25"
8 mm
0.3"
7.5mm DIA
0.29"
"S" VERSION
HI 1331
120 mm
4.7"
12 mm
0.5"
"
S
"
VERSION
HI 1230
75 mm
2.
95
"
6 mm
0.25"
"
S
"
VERSION
HI 2031
120 mm
4.7"
12 mm
0.5"
"S" VERSION
HI 1332