Thermo Fisher Scientific Alpha pH 100 User Manual

Page 19

5.6.4 The Lo HYS Menu

1. Enter this menu by pressing

the MODE key to the “SEt”
display if you are in the
measurement mode.

2. Press

ENTER key. If the

password has been set earlier,
key in the password using the
method described in section
4.1.

3. Press

ENTER once to confirm.

After you set the correct
password, you see the “CAL”
and “PH” display blinks
alternatively. Press ▼ key five
times, the display shows “Lo”
“HYS” blinking alternately.

1. Press

ENTER key to access

the Lo HYS menu and the
display shows the last Lo HYS
value. Use ▲ and ▼ keys to
change the value of the Lo
HYS point.

2. Press ENTER to confirm the

value of the Lo HYS. Press
MODE key to exit to the
measurement mode. You can
press MODE key (as an
ESCAPE key) to revert to the
measurement value if ENTER
is not pressed; the set value is
not stored into memory.

IMPORTANT : The Lo SET + ½ Lo HYS should be less
than Hi SET - ½ Hi HYS i.e. Hi SET and Lo SET value (in
consideration of the hysteresis band) can never overlap. Lo
HYS and Hi HYS can be set independent of each other; this
allows non-symmetrical hysteresis option.

SETUP

MODE

ENTER

SETUP

MODE

ENTER

0.2

SETUP

MODE

ENTER

HYS

NOTE : The maximum
value of Hysteresis is
0.2 pH to 2.0 pH or 20
mV to 200 mV. The Lo
HYS hysteresis is
spread equally on
either side of the Lo
SET point.