PerpHecT
®
Orion 310, 320, 330 Instruction Manual
46
C. Manual pH Calibration
NOTE:
Manual calibration can be performed with
any user-selected buffer(s). The difference between
manual buffer values must be between 1 and 4 pH
units.
1. Attach electrode to meter.
2. Press the SETUP key. Press the YES key until SET or STD is
displayed. Choose the SET option and press the YES key.
3. P1 is displayed in the top readout. Using the SCROLL (
▲
,
▼
)
keys, set user-defined value for the first buffer and press the YES
key to accept new value.
4. Repeat for second buffer value (P2). Press the MODE key to return
to MEASURE mode.
5. Press the CAL key. CAL is displayed for 2 seconds. The last
calibration buffer range will be displayed. Use the SCROLL
(
▲
,
▼
) keys to select the SET option. Press the YES key to accept
this calibration. Pl is displayed. Place electrode into the first
calibration buffer. When READY light is displayed indicating
electrode stability, the user defined buffer value will be displayed.
Press the YES key to accept. P2 is displayed. Repeat for second
calibration buffer.
6. When the READY light comes on, press the YES key to accept
buffer value. SLP will be displayed while the calculated slope is
displayed.
7. Rinse electrode with deionized water and place in sample.
8. Record pH directly from the main meter display and temperature
from upper field when the READY light is displayed or when
electrode signal is stable.
General Information on pH Calibration for Orion 330
Summary of Contents for Orion 310
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