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palintest Wagtech Potalab+ (C) XA Manual page 27

Advanced portable water quality laboratory (non-arsenic physico-chemical)

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4.0 Introduction
The Turbimeter Plus is the latest addition to the Palintest Compact
Meter range which includes photometers for chlorine, ozone,
chlorine dioxide and ammonia.
The Turbimeter operates according to the ISO 7027 method for
measurement of turbidity, utilising two NIR light sources
at 860nm as part of the QuadoptiX™ optical system.
The Turbimeter is provided with accessories and
standards to support effective use of the instrument.
For technical support or to report issues with this
product please contact Palintest or your supplier.
4.1 QuadoptiX™ Technology
The Palintest Turbimeter Plus utilises
QuadoptiX™ technology for turbidity
measurement - a sophisticated optical approach
designed to ensure turbidity measurements are
as accurate and repeatable as possible in even
the most challenging circumstances.
Turbidity measurements are carried out by analysis
of light scattered at 90° to the incident light
(nephelometric measurement) at levels below 40 NTU.
Above 40 NTU the recommendation is to measure
also at 180° to 'compensate' the 90° readings.
QuadoptiX™ technology uses two independent
sources and two independent detectors to provide
effectively four entirely autonomous measurement
systems in the same instrument, allowing multiple
validation of all results for greater accuracy.
4.2 Start-up
To switch the unit on, press the POWER button
and release. An audible beep will confirm the
instrument is on. Switch off by holding the
POWER button for 1 second.
The LCD screen is provided with a backlight option
that can be set to on/off in the 'System' menu
(see Section 4.4). The initial default setting is ON.
After initialisation the Mode screen will appear
and display three options:
1 Read - Select the mode to measure turbidity
or Total Suspended Solids (see Section 4.5).
2 Calibrate / Check - Check or calibrate the
Turbimeter Plus. Calibrate with either SDVB,
Formazin, Total Suspended Solids or to Restore
the factory calibration values (see Section 4.7).
Turbimeter Plus
3 System - view or set Log (result and
calibration), USB mode, Operator ID, Sample
ID, Units, Language, Set Time, Set Date, Date
Format, Software Version, Serial Number and
switch the backlight on/off (see Section 4.4).
Navigation through Menus is carried out using
the Up/Down buttons, using the 'OK' button to
select or the 'Back' to return up a level.
4.3 Battery Life/Replacement
Your Turbimeter Plus is designed to be powered
either by alkaline batteries or via the USB port.
Fresh batteries will be suitable for around
10,000 readings. Changing batteries is carried
out through the compartment on the rear
of the instrument. Two 'AA' 1.5V batteries are
required. Current battery and USB connection
status is displayed on the screen to assist in
power management.
The Turbimeter Plus has an auto-off function
to save power, automatically switching off the
meter after five minutes of inactivity.
A back-up battery is located on the PCB to store
all user data including the last mode used for
reading. Replacing the 'AA' batteries will not lead
to settings, results or calibration data being lost.
If battery power is insufficient for effective analysis
the Turbimeter screen will show Error 110:
Battery Low and advise to change batteries.
The battery icon will also show 'Empty' status.
If battery power is insufficient for any operation
the Turbimeter screen will show Error 111:
Battery Critical and automatically shut down.
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