General Introduction - ECD L20 Instruction Manual

General Introduction

Thank you for selecting the Model L20 meter. The Model L20 is a
precision tool that measures pH, mV, ORP or temperature—depending
on the electrode you are using. 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 IP54 case. The mechanical keys are highly
reliable with tactile and audio feedback. This meter is powered by (6)
"AAA" alkaline batteries or with a UL approved AC adapter (Output
9VDC). 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 "LOCK" 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
L20 can also be used in non-AUTOLOCK mode.
The Model L20 is available with pH, ORP and ATC (Automatic
Temperature Compensation) probes. Other features include single, dual
or three point calibration, 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.
1