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
contact us at info@aperainst.com or +1 (614)-285-3080
Apera Instruments reserves the right to update the content of this manual without giving prior notices.
Measuring Parameters
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.