User Manual

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1 BRIEF INTRODUCTION

Thank you for purchasing Apera Instruments 400 Series Portable pH/Conductivity Meters. Before using the product,

please read this manual carefully to help you properly use and maintain the product. For technical support, please

Apera Instruments reserves the right to update the content of this manual without giving prior notices.

Measuring Parameters

PH400

EC400

PC400

pH/mV

√

Conductivity/TDS

√

Temperature

√

Features and Functions

• The built-in microprocessor chip enables advanced functions such as auto calibration, auto temperature

compensation, auto electrode recognition, parameter setting, self-diagnosis, calibration reminder, calibration

time check, auto power-off, low-battery reminder, etc.

• The meter adopts advanced digital processing technology, intelligently improves the response time and

accuracy of the measurements. Stable reading and auto lock display mode are available for choice.

• Comes with a carrying case, which includes the meter, the electrode(s), calibration solutions, and other

accessories, convenient for in-field use.

• Meets IP57 Waterproof and dustproof rating, ideal for use under harsh environment.

Features in pH Measurement (for PH400 and PC400)

• 1 to 3 points auto calibration with calibration guide and self-diagnosis function.

• Automatic recognition of calibration solutions. Two series of standard solutions for choice: USA and NIST

Features in Conductivity Measurement (for EC400 and PC400)

• 1 to 4 points auto calibration with calibration guide and auto-check function.

• Single-tap switch between conductivity and TDS.

• Automatic recognition of conductivity calibration solutions.