OHAUS a-AB33EC, Instruction Manual

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Analyzer and Bench Meter EN-3
1. Introduction
This manual contains installation, operation and maintenance instructions for a-AB33M1
multi-parameter analyzer, a-AB33PH, a-AB41PH and a-AB33EC pH and conductivity
bench meter. Please read it completely before installation and operation.
The table below lists the measurement modes each model supports:
Table 1-1 Measurement modes
Model Supported measurement modes
a-AB33PH / a-AB41PH pH, mV, relative mV and ORP measurement
a-AB33EC Conductivity, TDS, salinity and resistivity measurement
a-AB33M1 pH, mV, relative mV and ORP measurement on
channel one;
Conductivity, TDS, salinity and resistivity measurement
on channel two
1.1. Safety precautions
Definition of Signal Warnings and Symbols
Safety notes are marked with signal words and warning symbols. These show safety
issues and warnings. Ignoring the safety notes may lead to personal injury, damage to
the instrument, malfunctions and false results.
WARNING For a hazardous situation with medium risk, possibly resulting in severe
injuries or death if not avoided.
CAUTION For a hazardous situation with low risk, resulting in damage to the device
or the property or in loss of data, or minor or medium injuries if not
avoided.
ATTENTION For important information about the product. May lead to equipment
damage if not avoided.
NOTE For useful information about the product.
Warning Symbols
General
hazard
Explosion
hazard
Electrical shock
hazard
Safety Precautions
CAUTION:
Read all safety warnings before installing, making connections, or
servicing this equipment. Failure to comply with these warnings could result
in personal injury and/or property damage. Retain all instructions for future
reference.

Before connecting power, verify that the AC adapter’s input voltage range
and plug type are compatible with the local AC mains power supply.

Do not position the equipment such that it is difficult to reach the power
connection.