Milwaukee Instruments SM500 User Manual download pdf (Page 2)

OPERATION:

• The meter is supplied complete with a 9V battery. Slide off

the battery compartment cover on the back of the meter.

Install the battery while paying attention to its polarity.

• Always remove the electrode protective cap before taking

any measurement. If the electrode has been left dry, soak

the tip in storage solution for a few

minutes to reactivate it.

• Connect the ORP electrode to the

BNC socket on the top of the meter.

• Immerse the tip (2.5 cm) of the ORP

electrode into the sample.

• Turn the instrument on by pressing

the ON/OFF key.

• Allow the reading to stabilize before

taking measurements.

• After use, switch the meter off and

store the electrode with a few drops

of storage solution in the protective

cap.

• The meter is factory calibrated. ORP

electrodes are inter-changeable and

no mV calibration is needed when

they are replaced.

MAINTENANCE:

• To correctly perfom a redox measurement, the surface of

the ORP electrode must always be clean. Use for this

purpose the M10000B rinse solution. If needed, brush the

Platinum tip with very fine abrasive paper.

• When not in use, the tip of the electrode should always be

kept moist and safe from any mechanical stress.

BATTERY REPLACEMENT:

When the battery becomes weak the meter will display "S".

When the low battery indicator appears, the battery has only

about 50 hours of working time left. A low battery will result in

unreliable measurements. It is recommended to replace the

battery immediately.

Battery replacement must only take place in a non hazardous

area using an alkaline 9V battery.

Turn the meter off, slide off the battery compartment cover at

the rear of the meter and replace the 9V battery with a new

one. Make sure the battery contacts are tight and secure, seat

the battery in its compartment and insert the cover again.

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Milwaukee Instruments SM500 User Manual Page 2

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