Omega PHB21, User Manual

Page: 23 / 38

6.7.
Equipment Operation mV - Calibration
SELECT FUNCTION
pH ºC mV
PLACE ELECTRODE
SOL.228mV @ 25ºC
============
====
SENS.=100.0%
WASH ELECTRODE
READY?
READ
/ ABS. REL.
GO TO SAMPLE!
READY?
LET ZERO!
READY?
->202.0mV ABS ->228 mV ABS
END REPORT?
/ Yes No
<ENTER>
228 mV ABS
GO TO SAMPLE!
READY?
->0.0 mV ABS
END REPORT?
/ Yes No
mV: /
SET UP/CHECK
READ
mV: READ /
/REG CALIBRATE
TEMP. COMP.:Man
25ºC < >
21
Press key until option flashes, then
press key to confirm the option chosen.
<SELECT> mV
<ENTER>
Press key until option flashes, then
press key to confirm the option chosen.
<SELECT> Read
<ENTER>
Press key until option flashes,
then press key to confirm the option
<SELECT> Calibrate
<ENTER>
If a thermo is attached to the instrument, Manual will
be displayed and user will have the option to adjust the
Temperature Compensation. Refer to page 12.
Dip electrode into 228mV Standard. This buffer value
was chosen at Set Up Operation.
Wait.
The sensibility of the electrode will be displayed.
Wash the electrode using deionized water, then press
key.
User will now be able to choose the reading in
Absolute or Relative.
<ENTER>
The reading will be displayed.
If user press and hold key in order to exit
the reading Mode, program will confirm if can end the
report and print the final results thru RS 232.
<ESCAPE>
Dip the
electrode into
the relative
sample, to
tare, then
press
<ENTER>
key.