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12 MW150 & MW151 Bench Meters
5. GENERAL OPERATIONS
5.1. BATTERY MANAGEMENT
When using the meter with battery, please charge the battery of the bench meter fully
before first use.
Use the supplied 12 VDC adapter, or connect to a PC through USB cable (MW151 only) to
recharge your battery.
Note: The instrument is equipped with auto-off feature to preserve battery energy.
5.2. CONNECTING THE ELECTRODE & TURNING THE METER ON
Plug the 12 VDC adapter into the power supply socket.
To prepare the instrument for use, connect the MW917B/1 pH electrode to the BNC connector
and the temperature probe to the appropriate socket on the rear panel of the instrument.
The temperature probe can be used in conjunction with the pH electrode to utilize the
instrument's ATC capability, but can also be used independently to take temperature
measurements. When the probe is not in use, temperature can be set manually using
the keys.
Assemble the electrode holder and press ON/OFF to turn the instrument on. All LCD
segments will be displayed for a few seconds (or while the ON/OFF is pressed), and then
the instrument will enter normal measurement mode.
After measurement has been taken, switch the meter off, clean the electrode and store it
with a few drops of MA9015 storage solution in the protection cap.
The auto-off feature turns the meter off after 10 minutes of non-use. To disable this feature,
see Setup, Auto Off section.
5.3. OPERATION OVERVIEW
MW150 offers simplified pH measurements that are ideal for anyone who requires rapid
and reliable results but works on a tight budget.
It displays 0.01 pH resolution and allows a 3-point buffer calibration from the following pH
buffers: pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45.
The bench meter shows calibration status and warning messages that indicate that the
pH electrode requires maintenance.
MEM/MR function can be used to store/recall measured values.
GLP feature provides offset and slope.
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