Electro-Chemical Devices (ECD) H10 - Manual (Page 4)

4
General Introduction
Thank you for selecting the Model H10 pH meter. The Model H10 is
a precision tool that measures pH, mV and temperature. A built‐in
microprocessor stores, calculates and compensates for all
parameters related to pH determinations including pH electrode
temperature characteristics, electrode slope deviations and buffer
solutions.
This meter has a waterproof IP67 case. The mechanical keys are
highly reliable with tactile and audio feedback. This meter is
powered by four AAA‐size alkaline batteries. The meter also displays
a “BAT” message when the batteries are in need of replacement. Re‐
calibration is not required when power is restored.
The front of the meter has a large LCD that displays pH or mV and
temperature simultaneously along with user prompts and mode
indicators. The unit prompts the user through calibration and
measurement procedures.
An AUTOLOCK feature for both pH and mV measurements enables
the unit to automatically sense the end point and “HOLD” the
display to indicate the end point value of a measurement.
AUTOLOCK and user prompts help eliminate most errors in
determining pH and mV values, resulting in precise, repeatable and
error‐free measurements. The Model H10 can also be used in non‐
AUTOLOCK mode.
The Model H10 is available with pH, ORP and ATC (Automatic
Temperature Compensation) probes. Other features include
electrode offset recognition, electrode slope recognition; electrode
efficiency display, built‐in buffer coefficients, automatic or manual
temperature compensation, long battery life, and 50/60Hz AC noise
rejection. This meter is user‐friendly, for field, industrial and
laboratory applications.
Initial Inspection
Carefully unpack the unit and accessories. Inspect for damages made
in shipment. If any damage is found, notify your ECD representative
immediately. All packing materials should be saved until satisfactory
operation is confirmed.
17
Error Displays and troubleshooting
Main
Display
Possible Causes
Corrective
Actions
“Er1”
● “Stand” was pressed before the
electrode and ATC/Temp probe
settled to within +/‐1.5 pH of
the buffer value.
●pH electrode offset is greater /
less than +/‐1.5 pH.
●pH electrode is faulty.
●Press “Clear” key, allow
sufficient time for the
electrode and ATC/Temp
probe to stabilize, re‐
press “Stand” key to start
the calibration
procedure.
●Replace the buffer and
/or the pH electrode.
Press “Clear” key to
recalibrate meter.
●Replace electrode.
“Er2”
● “Slope” was pressed before
the electrode and ATC/Temp
probe settled to within 30% of
the buffer value.
● Buffer 4.00, 4.01, 9.18 and
10.01 is not correct.
●pH electrode slope is off by
more than 30% of ideal slope.
●Allow sufficient time for
the electrode and
ATC/Temp probe to
stabilize, re‐press “Slope”
key to continue the
calibration procedure.
●Check if the correct
buffer is used.
●Replace the buffer and
/or the pH electrode.
Press “Clear” key to
recalibrate meter.
“Er3”
Temperature is out of the
0.0 to 60.0°C range. Bring the buffer
temperature within range.
“Over”
Or
“Undr”
●Measured pH is out of the 2.00
to 16.00 pH range.
●Measured mV is out of the 1999
to 1999 mV range.
●Measured temperature is out of
the –10.0 to 120.0°C range.
●Bring sample pH into the
correct measuring range.
●Bring sample ORP into
the correct measuring
range.
●Bring sample
temperature into the
correct measuring range.