palintest Micro 600 User manual

Palintest ®
ZI INST 1240
Palintest
®
Micro 600 DO Meter
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Palintest ®
Preface
This manual serves to explain the use of the Micro 600 DO hand held meter.
This manual functions in two ways: first as a step by step guide to help you
operate the meter; second, as a handy reference guide.
This manual is written to cover as many anticipated applications of the
Micro 600 DO meter as possible. If there are doubts in the use of this meter,
please contact us. Our contact details are on the last page of this manual.
Palintest will not accept any responsibility for damage or malfunction to the
meter caused by improper use of the instrument.
The information presented in this manual is subject to change without notice
as improvements are made. Please refer to our website for the latest version.
2
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Contents
3
Chapter Page Chapter Page
1 Introduction 4
2 Getting Started 5
2.1 Description of Keypad Functions 5
2.2 Description of LCD Annunciators 5
2.3 Inserting & removing the
rubber armour/stand 6
2.4 Inserting New Batteries 6
2.5 Battery Replacement 7
2.6 Connecting the Electrode 7
2.7 Electrode Information 7
2.8 Switching the Meter On 8
2.9 Changing Mode 8
3 Calibration 9
3.1 General Information 9
3.2 Temperature Calibration 10
3.3 % Saturation Calibration 11
3.3.1 100% Calibration 11
3.3.2 0% Calibration 12
3.4 mg/L or ppm Calibration 13
4 Measurement 14
4.1 Temperature Compensation 14
4.2 Taking Measurements 15
4.3 Pressure & Salinity
Compensated Measurements 15
4.4 Holding a Reading 16
5 Setup 17
5.1 Configuration Menu (COF.1) 21
5.2 Automatic Temperature
Compensation (A.ATC) 21
5.3 Selection of mg/L or ppm (b.DO) 21
5.4 Calibration Data (CAL.2) 22
5.5 Electrode Data (ELE.3) 22
5.6 Automatic Shut Off (AtO.4) 24
5.7 Reset to Factory Default (rSt.5) 24
5.8 % Saturation Offset
Adjustment (OFS.6) 25
5.9 Pressure & Salinity Adjustment 26
6 Probe Maintenance 28
6.1 Cap and Electrolyte Replacement 28
6.2 Electrolyte Solution 29
7 Troubleshooting 30
8 Error Messages 31
9 Factory Default Settings 32
10 Specifications 33
11 Replacements and Accessories 34
12 Dissolved Oxygen Theory 35
Measurement Units 36
What is being measured? 36
Air Calibration 36
Applications 37
13 Warranty 38
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1Introduction
Thank you for purchasing the Micro 600 DO. This microprocessor-based
handheld meter is economical and easy to use. It has a large custom LCD
(Liquid Crystal Display) for clear and easy reading.
The Micro 600 DO offers measurement of dissolved oxygen (DO) as
percentage saturation or concentration. Temperature measurement is
also available in degrees Celsius. The meter ensures accurate measurement
of the dissolved oxygen values through its temperature, barometric pressure
and salinity compensation features.
Meter kits include a dissolved oxygen probe, DO membrane maintenance
set, zero oxygen solution, deionised water, a rubber armour/stand, 4 alkaline
“AAA” batteries, instruction manual, and warranty card. For additional
information, see Section 11 - REPLACEMENTS AND ACCESSORIES.
Please read this manual thoroughly before operating your meter.
4
1.0 Introduction
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2
Getting Started
Your meter has 6 keys on its splash-proof
keypad. Some buttons have multiple functions
depending on the mode of operation.
ON/OFF Powers meter on and off. Meter
starts up in the measurement mode
that you last switched off from.
CAL Enters into calibration mode. Pressing
while in calibration mode will abort
calibration without confirming value.
MODE Selects desired measurement mode.
When pressed simultaneously with
ON/OFF, it will take you into the
SETUP mode. For more information see Section 5 - SETUP.
HOLD Freezes measured reading. Press again to resume live reading.
ENTER Confirms calibration value in calibration mode and confirm
selections in SETUP mode.
▲▼ Increment/decrement values during calibration mode or scroll through
SETUP menus. Set offset adjustments and configuration settings.
5
2.1 Description of Keypad Functions
2.2 Description of LCD Annunciators
Active LCD
display for
Micro 600 DO
Your meter has a large custom LCD that consists of 4-digit segments plus
annunciators for percentage saturation (%), concentration (mg/L or ppm)
and Temperature in degrees Celsius (T).
Other annunciators include “A” (when the ATC function is activated),
“CAL” (when meter is in calibration mode) and low battery condition.
Calibration
Mode
Annunciator
ATC Annunciator
milligram per litre
(Concentration Mode)
parts per million
Percentage (Percentage
Saturation Mode)
Low Battery Annunciator Temperature Mode
14-segment Liquid Crystal Display
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2Getting Started
6
1To remove meter from rubber armour, push out from the bottom edges of
meter until it is completely out of boot. Ensure that your electrode cables
are not connected. See Figure 1.
2To insert meter into armour, slide in from the top of meter before pushing
the bottom edges of meter down to set it into position. Lift up the stand at
the back of meter for bench top applications if necessary. See Figure 2.
2.3 Inserting & removing the rubber armour/stand
Figure 1 Figure 2
The battery compartment is found at the back of instrument. To open the
battery compartment, push in the direction of arrow and lift up the cover.
Note the polarity of battery before inserting into position. After replacement,
place cover back and press down until it locks.
2.4 Inserting New Batteries
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2
Getting Started
7
1To connect the electrode, align the connector
slots with the posts of meter’s socket and
rotate connector clockwise until it locks.
2To remove, rotate the connector in anti-
clockwise direction until it unlocks,
and slide the connector off the socket.
3Insert the mini phono jack of
temperature sensor into the socket
on the meter as shown opposite.
2.6 Connecting the Electrode
A low battery annunciator in the LCD alerts you
when battery power is running low. Caution:
Power off the meter before replacing battery.
2.5 Battery Replacement
Low Battery Condition
BNC
connector
2.5mm mini phono
for temperature
Detachable
Pre-membraned
Cap (Probe
Sensing Area)
Galvanic
DO probe
PT 148/3
The Micro 600 DO includes a galvanic DO electrode
PT 148/3 which doesn’t require warm-up. It generates
a millivolt signal proportional to the amount of oxygen
in the solution.
The electrode has a dual cable; a BNC connector for DO
measurement and a phono jack plug for temperature.
The sensor utilises a cathode, anode, and electrolyte that
are separated from the sample by an oxygen permeable
membrane. The membrane is pre-assembled for you
and fixed to a detachable cap. The pre-assembled cap
design allows simple replacement and fast conditioning.
The probe is light weight and includes a built-in
temperature sensor. The epoxy body of the probe
is 12mm diameter while the detachable Noryl cap
is 16mm diameter. The compact sensing area
reduces air entrapment resulting in quick, accurate,
and stable readings.
2.7 Electrode Information
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2Getting Started
8
The pre-assembled cap must be completely submersed to obtain an accurate
reading in solutions. Provide simple stirring for best results - ideally achieve
a minimum water flow rate of 2 inch/second on the membrane. The probe
is not recommended beyond 0 to 50°C.
Shaking will aid to remove bubbles if needed before taking a reading. When
calibrating in air, shake to remove water from the membrane.
The membrane is thin and can not be repaired if damaged. Use care to protect
from scratches, abrasion, or contact with solids. For best results keep membrane
clean by rinsing after daily use. See Section 6 - PROBE MAINTENANCE.
Press ON/OFF to power up your meter. Your
meter will cycle through various setup parameters
when switched on.
1All LCD segments will briefly illuminate.
2The model Micro 600 DO will display next
along with mg/l, ppm, and % annunciators.
3Next, the meter revision number [r #.##] is
shown briefly before beginning measurement.
4The meter begins with the measurement
mode that was in use when it was previously
powered off - %, mg/l, ppm, or T.
2.8 Switching the Meter On
Press MODE to switch between
percentage saturation (%),
concentration (mg/L)(ppm), and
temperature (T) measurement.
2.9 Changing Mode Automatic
Temperature
Compensation
Percentage
Saturation
Concentration
Mode
Temperature
Mode
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3
Calibration
9
The Micro 600 DO has three measurement modes; DO as % saturation,
DO as mg/L (or ppm) concentration, and temperature.
Dissolved oxygen levels vary with temperature, barometric pressure, and
salinity, so calibration must be performed with consideration of these factors.
It is necessary to set the proper temperature, barometric pressure and
salinity values prior to performing any DO calibration or measurement.
See Section 3.2 - Temperature Calibration
See Section 5.2 - Automatic Temperature Compensation
See Section 5.9 - Pressure & Salinity Adjustment
The Micro 600 DO will accept two % saturation calibration points; 100% using
saturated air or air-saturated water, and 0% using zero oxygen solution. When
100% calibration is performed, the corresponding concentration is adjusted
simultaneously. Therefore, it is not necessary to calibrate the concentration
mode. If calibrating for 0% oxygen, note that the meter will take several
minutes to reach 0% saturation value and constant stirring is not required.
The following table lists calibration values in % saturation calibration mode
with two different barometric pressures. Note that the saturation value
(92.1%) has decreased due to the lower barometric pressure entered.
If calibration is attempted from 10.1% to 49.9%, the “Err.1” message is shown
- calibration is rejected and the display will return to measurement mode.
The Micro 600 DO will accept one calibration point in concentration mode.
The minimum value is 2mg/L (ppm), and the calibration window is +/- 40%
of the factory default value.
Temperature and % saturation calibration should take place before attempting
to perform mg/L (ppm) concentration calibration.
3.1 General Information
% Saturation
(per factory default value)
less than 10%
10.1% to 49.9%
50% to 200%
0%
Err.1 (error 1)
100%
0%
Err.1 (error 1)
92.1%
Calibration Value
(760mmHg)
Calibration Value
(700mmHg)
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3Calibration
10
Calibration of the concentration mode will only replace the previous
concentration calibration and does not affect the % saturation calibration.
To offset your % saturation reading to match another instrument, see
Section 5.8 - % Saturation Offset Adjustment.
New calibration values will automatically override the existing data. Perform
daily calibration for best results. To completely recalibrate the meter and
when installing a replacement electrode, it is best to clear all calibration
data. See Section 5.7 Reset to Factory Default.
3.2 Temperature Calibration
For best DO accuracy, ensure that the
temperature is accurate. The temperature
sensor of the probe has been factory calibrated,
however if it changes over time or if the probe
is replaced, calibration may be necessary.
To protect from erroneous calibrations, the
allowable tolerance is limited to ±5°C
adjustment of the factory default value.
Most users utilise automatic temperature
compensation using the sensor that is built
into the probe. However, manual temperature
compensation can be used to input a fixed,
known temperature.
1Press MODE to select temperature mode. The
display should show “T” for temperature and
“A” for automatic temperature compensation.
2Dip the probe into a solution with a known,
accurate temperature (i.e. a temperature
bath). Allow enough time for the temperature
reading to stabilise.
3Press CAL. The CAL indicator will blink above
the display. The temperature value shown
is the value based on the factory default.
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3
Calibration
11
3.3.1 100% Calibration
1Rinse the probe well with DI water
or rinse solution.
2Press MODE to select % saturation.
3Hold the probe in the air with the tip facing
downwards. Wait for the reading to stabilise.
4Press CAL. The CAL indicator and intended
percentage calibration point (100%) display
briefly, before CAL flashes.The % value based
on the factory default calibration is shown.
5Press HOLD/ENTER to confirm the calibration.
The meter displays “CO”, automatically
calibrates to 100.0% air saturation, then
returns to measurement mode.
The Micro 600 DO can be easily calibrated
in air. For best DO accuracy, ensure that the
barometric pressure value is accurate.
The barometric pressure factory default is
760mm Hg, which results in a theoretical
calibration value of 100% saturation in air. If the
barometric pressure setting has been changed
from 760mm Hg, the meter will automatically
adjust to a new % saturation calibration value
instead of 100%. This new value is correct for
the adjusted barometric pressure.
3.3 % Saturation Calibration
4Press ▲▼ to adjust the reading to match the correct temperature
value (i.e. of the temperature bath).
5Press HOLD/ENTER to confirm the calibration and return to
measurement mode.
Press CAL as needed to exit calibration without confirmation at any time.
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3Calibration
12
3.3.2 0% Calibration
1Rinse the probe well with DI water
or rinse solution.
2Press MODE to select % saturation.
3Dip the probe into zero oxygen solution.
Wait for the reading to stabilise.
4Press CAL. The CAL indicator and intended
percentage calibration point (0%) display
briefly, before CAL flashes. The % value
based on the factory default calibration
is shown.
5Press HOLD/ENTER to confirm the
calibration. The meter displays “CO”,
automatically calibrates to 0.0% saturation,
then returns to measurement mode.
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3
Calibration
13
1Perform 100% saturation calibration.
See Section 3.3.1 - 100% Calibration.
2Rinse the probe well with DI water
or rinse solution.
3Dip the probe into a sample of known
oxygen concentration (i.e. determined by
titration or another instrument). Wait for
the reading to stabilise.
4Press MODE to select the mg/L (ppm).
5Press CAL. The CAL indicator and current
concentration display briefly, before CAL
flashes. The concentration value based on
the factory default calibration is shown.
6Press ▲▼ to adjust the reading to match
the known oxygen concentration value.
7Press HOLD/ENTER to confirm the
calibration. The meter displays “CO”,
automatically calibrates to the entered
value, then returns to measurement mode.
NOTE: The minimum calibration value is 2
mg/L. To prevent erroneous calibrations, the
calibration is limited to ±40% adjustment
of the factory default value.
3.4 mg/L or ppm Calibration
Performing a 100% saturation calibration will simultaneously calibrate the
corresponding mg/L (ppm) concentration value. Therefore, additional mg/L
(ppm) calibration isn’t required in most circumstances.
If desired, you can perform a calibration adjustment in mg/L (ppm) without
affecting your % saturation calibration value.
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4Measurement
14
4.0 Measurement
The Micro 600 DO offers
automatic or manual
temperature compensation.
See Section 5.2 -
Automatic Temperature
Compensation.
4.1 Temperature Compensation
Insert the phono plug of the probe for Automatic
Temperature Compensation (ATC). The “A”
annunciator will display normally when active,
or blink if the phono plug is disconnected.
Deactivate “A.ATC” for manual temperature
compensation. The “A” annunciator is not
displayed when the meter is in manual
temperature compensation mode. For manual
temperature compensation, manually enter
the desired process temperature into the
meter from 0 and 50°C. Default is 25°C.
1Press MODE to select temperature.
2Press CAL. The “CAL” indicator will start
blinking and the display will show the
last manually set temperature value.
3Check the temperature of your sample
using an accurate reference thermometer.
Wait for the value to stabilise. Press ▲▼
to manually set the temperature value.
4Press HOLD/ENTER to confirm the
calibration. The meter displays “CO”,
automatically sets the entered value,
then returns to measurement mode.
Automatic
Temperature
Compensation
activated
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4
Measurement
15
1Rinse the probe well with DI water
or rinse solution.
2Select the appropriate measurement mode.
Press MODE to toggle between modes:
a. Percentage Saturation (%)
b. Concentration (mg/L) or (ppm)
c. Temperature (T)
3Dip the probe into the sample.
4Allow reading to stabilise and
observe reading.
To change the concentration units see
Section 5.3 - Selection of mg/L or ppm.
4.2 Taking Measurements
Follow these general rules when taking measurements: keep the membrane
free from contact with solid objects, provide stirring of your solution - this
helps to overcome the oxygen consumption of the probe and prevents
air bubble entrapment, do not strike against hard surfaces, and do not
submerge the cable for extended periods.
4.3 Pressure & Salinity Compensated Measurements
During measurement the dissolved oxygen reading is automatically
compensated for salinity and pressure based on values entered in the setup
menu. For best DO accuracy, ensure pressure and salinity are adjusted
accordingly from the setup menu. The factory default values are 760mm Hg
(101.3 kPa) barometric pressure (sea level) and 0.0 ppt salinity (no salinity).
See Section 5.9 - Pressure & Salinity Adjustment.
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4Measurement
16
4.4 Holding a Reading
To hold the displayed
reading momentarily, press
HOLD/ENTER during
any measurement. The %,
mg/L, ppm or T annunciator
will blink, indicating that the value is held.
Press HOLD/ENTER again to deactivate the HOLD function.The meter reverts
to the current active measurement and the annunciator will stop blinking.
If the auto-off feature is activated, the meter will turn off automatically after
20 minutes of non use The HOLD value is not retained when the meter is
shut off automatically or manually.
Annunciator
Blinks when
meter is in
“HOLD” mode
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5
Setup
17
5.0 Setup
There are two setup menus. One menu is derived from the % saturation
and temperature modes, the other menu is derived from the mg/L
(or ppm) concentration mode.
1Press MODE to display % or temperature. Press ON/OFF to power off.
OR, Press MODE to display mg/L (or ppm). Press ON/OFF to power off.
2With the meter off, keep the MODE key pressed. Press and release
ON/OFF, then release MODE. The meter should display “SEt.P”
after ON/OFF is released and “COF.1” after MODE is released.
Press CAL one or more times as needed during setup mode to exit and
return to measurement mode at any time.
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5Setup
18
Setup Menu
Selection of automatic power-off
(20 min from the last key press)
Reset Menu
A.CAL Calibration only reset to factory default
b.USR User settings reset to factory default
% saturation offset adjustment
(available from % saturation concentration setup only)
Dissolved Oxygen Parameters
A.HG Barometric pressure adjustment in mmHg
A.PA Barometric pressure adjustment in kilopascal
b.SAL Salinity adjustment
(available from concentration setup only)
Configuration Menu
A.ATC Automatic Temperature Compensation
b.DO Select mg/L or ppm units for concentration mode
(available from concentration setup only)
View the latest calibration data according
to the respective setup menu.
View the electrode properties
FACT View the slope factor
OFS View the % saturation offset adjustment.
(available from % saturation concentration setup only)
HI.mV View the mV value at 100% saturation
LO.mV View the mV value at 0% saturation
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5
Setup
19
Switch off from % Saturation or
Temperature measurement mode. Press
and hold MODE key and then switch on.
% or Temperature Setup Menu
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5Setup
20
Switch off from Concentration
measurement mode. Press and hold
MODE key and then switch on.
mg/L (ppm) Concentration Setup Menu
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