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5
Digital Multiparameter Meter
Using Manual Recognition /
Custom Buffers
1 While in pH measurement mode, dip the
pH and ATC sensor(s) into your first standard
then press CAL.
2 When the READY indicator appears, use
up/down arrows to adjust the primary reading
to match the standard value at the measured
temperature, then press ENTER.
3 Rinse your electrode(s) then repeat Step 2
with a standard that is ≥1 pH unit from the
previous standard value.
4 To calibrate another pH standard, repeat
Step 3 or press MEAS to return to pH
measurement mode.
mV Offset Adjustment
1 While in mV measurement mode, dip the ORP
and ATC sensors into a solution with a known
mV value (i.e. Zobel, Light's, quinhydrone, or
iodide/triiodide) and stir.
2 When the "READY" indicator appears, use
up/down arrows to adjust the primary reading
to match the mV value at the measured
temperature, then press ENTER. The meter
allows an adjustable maximum value of ±200
mV from the factory default mV value. When
an offset has been stored successfully, R.mV
replaces mV.
Temperature Calibration/
Manual ATC
1 Press CAL from any measurement,
then press MODE.
2 Skip to step 3 for manual ATC, otherwise, dip
the temperature sensor into a solution with a
known accurate temperature. The upper display
shows the active temperature while the lower
display shows the factory default temperature
without adjustment.
3 Use up/down arrows to adjust the upper
display. Press ENTER to accept the calibration
temperature. The maximum adjustable value
is ±10ºC (or ±18ºF) from factory default.
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Error Messages
"ERR" will appear when an error
condition exists or the incorrect key is
pressed. Common examples include:
• Pressing ENTER during calibration before the
"READY" indicator appears. Wait for the
"READY" indicator before pressing ENTER.
• UR (Under Range).
• OR (Over Range).
Intended Use, Maintenance
& Precautions
These handheld meters use sensors to detect various
parameters for water-based measurements. For
routine maintenance disconnect the power cord or
battery, then dust or wipe the display using a damp
cloth. If necessary, warm water or a mild water based
detergent can be used. Immediately remove any
spilled substance from contact with the meter using
the proper cleaning procedure for the type of spill.
• Do not use this equipment in potentially
explosive atmospheres.
• Refer to the electrode instructions for use,
storage and cleaning.
• Ensure that no liquid enters the instrument.
• Do not use any aggressive cleaning chemicals
(solvents or similar agents).
• There are no user serviceable parts inside. Attempts
to service internal parts may void the warranty.
• WARNING: No modification of this
equipment is allowed.
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