Piusi K24 Calibration Manual

ENGLISH
INDEX A6 Battery Housing
A BECOMING ACQUAINTED WITH K24
The k24 is powered by two standard type 1.5 V batteries (size AAA).
A1 Measurement System
The battery housing, easily accessible, is closed by a metal cover sealed through a
A2 Display Positioning
rubber protection acting as a gasket as well. The whole unit can be easily removed
A3 Operating modes
A4 LCD display by unscrewing the 4 screws fixing the cover and the protection to the body.
A5 User Buttons
A6 Battery Housing
B INSTALLATION
B INSTALLATION
C DAILY USE
C1 Dispensing in Normal mode
K24 features a threaded, perpendicular inlet and outlet (1" gas or ntp male
C1.1 Partial reset
and female that can be combined together). It has been designed to be easily
C1.2 Resetting the Reset Total
C.2 Dispensing with Flow Rate Mode display installed in any position: fixed in-line or mobile on a dispensing nozzle.
C.2.1 Partial reset
In order to improve the life of the turbine, it is recommended to fit a strainer
D CALIBRATION
before the meter itself
D1 Definitions
D2 Why Calibrate
D3 Calibration procedure:
! ATTENTION
D3.1 Display Of Current "K Factor" And Restoring
At the female inlets, tighten the couplings at a max. torque of 55N/m.
"Factory K Factor"
D3.2 In-field Calibration
D3.2.1 In-field calibration procedure:
D3.3 Direct modification of K factor
C DAILY USE
E METERS CONFIGURATION
F MAINTENANCE
G MALFUNCTIONS The only operations that need to be done for daily use are partial and/or resettable
H TECHNICAL SPECIFICATIONS
total register resetting.
I DISPOSAL
The user should use only the dispensing system of k24.
L EXPLODED VIEWS AND OVERALL DIMENSIONS
Occasionally the meter may need to be configured or calibrated. To do so, please
refer to the relevant chapters.
Below are the two typical normal operation displays.
A BECOMING ACQUAINTED WITH K24 One display page shows the partial and reset total registers. The other shows the
partial and general total. Switchover from resettable total to general total display
Electronic digital meter featuring a turbine measurement system, designed for is automatic and tied to phases and times that are in factory set and cannot be
changed.
precise measuring of low viscosity fluids.
It is divided into two using macrogroups:
1 With body made of inconductive plastic material of light colour,
designed to be used with water / urea solution
2 With body made of conductive plastic material of dark colour
(assessed resistance: 50 ohm), designed to be used with DIESEL FUEL,
WATER and windscreen fluids.T
he card can be rotated with respect to its housing, thus allowing easy display NOTE: 6 digits are available for Totals, plus two icons x 10 / x100. The
readings in any position. The card housing, easily accessible, is closed by a plastic increment sequence is the following:
cover sealed through a rubber protection acting as a gasket as well. The whole unit 0.0 → 99999.9 → 999999 → 100000 x 10 → 999999 x 10 → 100000 x 100 →
can be easily removed by unscrewing the 4 screws fixing the card and the cover. 999999 x 100
A1 Measurement System C1 Dispensing in Normal mode
Normal mode is the standard dispensing. While the count is made, the partial
Turbine measurement system. The turbine is placed inside a hole through the and resettable total are displayed at the same time (reset total).
body of k24, fitted with threaded inlet and outlet. The body of k24 is made of a
plastic material that allows several types of threads with relevant combinations.
Should one of the keys be accidentally pressed during
K24 has 2 rubber protections, designed to act as gaskets, too, and thus reducing
dispensing, this will have no effect.
the number of its components.
A few seconds after dispensing has ended, on the
The liquids compatible with k24 must be at low viscosity, namely:
lower register, the display switches from resettable
- Diesel fuel
total to general total: the word reset above the word
- Water
total disappears, and the reset total is replaced by the
- Water/urea solution
general total.
- Kerosene
This situation is called standby and remains stable until
- Windscreen
the user operates the k24 again.
- Petrol
Main components:
C1.1 Partial reset
LCD Display
The partial register can be reset by pressing the reset
key when the meter is in standby, meaning when the
Reset Button
display screen shows the word "TOTAL".
Cal Button
After pressing the reset key, during reset, the display
screen first of all shows all the lit-up digits and then all
the digits that are not lit up.
At the end of the process, a display page is first of all
shown with the reset partial and the reset total
A2 Display Positioning
The square shape of the k24 body allows the card to be rotated in its housing,
and, after a few moments, the reset total is replaced by
thus ensuring great versatility in positioning.
the non resettableTotal.
C1.2 Resetting the Reset Total
The reset total resetting operation can only be
performed after resetting the partial register. The reset
total can in fact be reset by pressing the reset key at
ATTENTION
length while the display screen shows reset total as on
!
While fixing the K24 card, make sure the battery contact cable is the following display page:
not placed above the circular housing of the bulb.
Schematically, the steps to be taken are:
1. Wait for the display to show normal standby display
A3 Operating modes
page (with total only displayed),
The user can choose between two different operating modes:
- Normal Mode: Mode with display of Partial and Total dispensed quantities.
2. Press the reset key quickly
- Flow Rate Mode: Mode with display of Flow Rate, as well as Partial dispensed
quantity.
3. The meter starts to reset the partial
The meter features a non-volatile memory for storing the dispensing data, even
in the event of a complete power break for long periods.
4. While the display page showing the reset total is
The measurement electronics and the LCD display are fitted in the top part of
displayed
the K24 which remains isolated from the fluid-bath measurement chamber and
Press the reset key again for at least 1 second
sealed from the outside by means of a cover.
5. The display screen again shows all the segments of
A4 LCD display
the display followed by all the switched-off segments and
The "LCD" of the METER features two numerical registers and various indications
finally shows the display page where the reset Reset
displayed to the user only when the applicable function so requires.
Total is shown.
Key:
1
1. Partial register (5 9
figures with moving comma
C.2 Dispensing with Flow Rate Mode display
FROM 0.1 to 99999) indicating
the volume dispensed since the 2
8
It is possible to dispense fluids, displaying at the same time:
reset button was last pressed;
7 * the dispensed partial
3
2. Indication of battery
* the Flow Rate in [Partial Unit / minute]
charge;
as shown on the following display page:
3. Indication of
4 5 6
calibration mode;
4. Totals register (6 figures with moving comma FROM 0.1 to 999999),
that can indicate two types of Total:
4.1. General Total that cannot be reset (TOTAL)
4.2. Resettable total (Reset TOTAL)
5. Indication of total multiplication factor (x10 / x100 )
Procedure for entering this mode:
6. Indication of type of total, (TOTAL / Reset TOTAL);
- wait for the Remote Display to go to Standby, meaning the display screen
7. Indication of unit of measurement of Totals: L=Litres Gal=Gallons
shows Total only
8. Indication of Flow Rate mode
- quickly press the CAL key.
9. Indication of unit of measurement of Partial: Qts=Quarts
- Start dispensing
Pts=Pints
The flow rate is updated every 0.7 seconds. Consequently, the display could be
L=Litres
relatively unstable at lower flow rates. The higher the flow rate, the more stable
Gal=Gallons
the displayed value.
A5 User Buttons
IMPORTANT
!
The flow rate is measured with reference to the unit of measurement
The k24 features two buttons (reset and cal) which individually perform two main
of the Partial. For this reason, in case of the unit of measurement
functions and, together, other secondary functions.
of the Partial and Total being different, as in the example shown
The main functions performed are:
below, it should be remembered that the indicated flow rate relates to the
- For the reset key, resetting the partial register and resettable total
unit of measurement of the partial. In the example shown, the flow rate is
(reset total)
- For the cal key, entering instrument calibration mode.
Used together, the two keys permit entering configuration mode, useful for
changing the units of measurements and calibration factor.
ENGLISH ENGLISH
expressed in Qts/min.
The word "Gal" remaining alongside the flow rate refers to the register of
the Totals (Reset or NON Reset) which are again displayed when exiting
from the flow rate reading mode.
To return to "Normal" mode, press the CAL key again. If one of the two keys
RESET or CAL is accidentally pressed during the count, this will have no effect.
! IMPORTANT
Even though in this mode they are not displayed, both the Reset
Total and the General Total (Total) increase. Their value can be
checked after dispensing has terminated, returning to "Normal" mode, by
quickly pressing CAL.
C.2.1 Partial reset
To reset the Partial Register, finish dispensing and wait for the Remote Display
to show a Flow Rate of 0.0 as indicated in the illustration
then quickly press RESET
D CALIBRATION
D1 Definitions
Calibration factor or "k factor" :
Multiplication factor applied by the system to the electrical pulses received, to
transform these into measured fluid units.
FACTORY K FACTOR:
Factory-set default factor. It is equal to 1,000. This calibration factor ensures
utmost precision in the following operating conditions:
Fluid diesel fuel
Temperature: 20°c
Flow rate: 10-120 litres/min
Even after any changes have been made by the user, the factory k factor can be
restored by means of a simple procedure.
USER K FACTOR:
Customized calibration factor, meaning modified by calibration.
D2 Why Calibrate
When operating close to extreme conditions, such as for instance with fluids
close to acceptable range extremes (like diesel fuel at low temperatures) or
in extreme flow rate conditions (close to minimum or maximum acceptable
values), an on-site calibration may be required to suit the real conditions in
which the k24 is required to operate.
D3 Calibration procedure:
K24 permits making quick and precise electronic calibration by changing the
calibration factor (k factor).
There are 2 different ways of calibration:
1. On-site calibration, performed by means of a dispensing operation.
2. Direct calibration, performed by directly changing the k factor.
To enter the calibration phases it is necessary to press and hold down the
"cal" button.
Why enter the calibration phases?
• Display the currently used calibration factor
• Return to factory k factor after a previous calibration with user k factor
• Change the calibration factor using one of the two previously indicated
procedures.
In calibration mode, the partial and total dispensed quantities indicated on
the display screen take on different meanings according to the calibration
procedure phase. During the calibration, the k24 cannot perform any normal
dispensing operations. In calibration mode, the totals are not increased.
WARNING
! The k24 features a non-volatile memory.
It keeps the calibration and dispensing data stored even after
replacing new batteries or long periods of inactivity.
D3.1 Display Of Current "K Factor" And Restoring "Factory K
Factor"
By pressing the cal key while the appliance is in
standby, the display page appears showing the current
calibration factor used.
If you are using k24 with "factory k factor", the display
page shown in the diagram will be displayed, with the
word "fact".
If one "user k factor" has been set, the calibration
factor set by the user (in our example 0.998) will be
displayed. The word "user" indicates a calibration
factor set by the user is being used.
The flow chart alongside
shows the switchover logic
from one display page to
another.
In this condition, the Reset
key permits switching from
User factor to Factory
factor.
To confirm the choice of
calibration factor, quickly
press CAL while "User" or
"Fact" are displayed.
After the restart cycle, the
meter uses the calibration
factor that has just been
confirmed.
ATTENTION
!
When the
Factory Factor is
confirmed, the old
User factor is deleted from
the memory
D3.2 In-field Calibration
This procedure calls for the fluid to be dispensed into a graduated sample
container in real operating conditions (flow rate, viscosity, etc.) requiring
maximum precision.
! WARNING
For correct K24 calibration, it is most important to:
• completely eliminate air from the system before calibrating;
• use a precise Sample Container with a capacity of not less than 5 litres,
featuring an accurate graduated indicator.
• ensure calibration dispensing is done at a constant flow rate equivalent
to that of normal use, until the container is full;
• not reduce the flow rate to reach the graduated area of the
container during the final dispensing stage (the correct method during
the final stages of sample container filling consists in making short top-
ups at normal operation flow rate) ;
• after dispensing, wait a few minutes to make sure any air bubbles are
eliminated from the sample container; only read the Real value at the end
of this stage, during which the level in the container could drop.
• if necessary, carefully follow the procedure indicated below.
ENGLISH
D3.2.1 In-field calibration procedure: E METERS CONFIGURATION
AZIONE DISPLAY
Some models of meter feature a menu with which the user can select the main
NONE measurement unit, Quarts (Qts), Pints (Pts), Litres (Lit), Gallons (Gal);
1
K24 IN STAND BY The combination of the unit of measurement of the Partial register and that of the
Totals is predefined according to the following table:
Unit of Measurement of the
LONG CAL KEY KEYING Combination no.
2
K24 enters calibration mode, shows "CAL" and displays the
calibration factor in use instead of total. The words "Fact" and
1
"USER" indicate which of the two factors is currently in use.
2
3
3 LONG RESET KEY KEYING
3
4
K24 shows "CAL" and the partial at zero. K24 is ready to perform
on-site calibration.
To choose between the 4 available combinations:
• wait for K24 to go to Standby,
DISPENSING INTO SAMPLE CONTAINER
4
• press the CAL and RESET keys together. Keep these pressed until the word
Without pressing any KEY, start
"UNIT" appears on the screen together with the unit of measurement set at that
dispensing into the sample container.
time (in this example Litres / Litres)
• Press the reset key to select the desired combination of unit of measurement,
amongst those shown below.
Dispensing can be interrupted and started again at will. Continue
dispensing until the level of the fluid in the sample container has • Save the new combination by pressing the cal key at length. K24 will pass
reached the graduated area. There is no need to reach a preset through the start cycle and will then be ready to dispense in the set units.
quantity.
Indicated value
Real value
SHORT RESET KEY KEYING
5
K24 is informed that the calibration dispensing operation is
finished.
Make sure dispensing is correctly finished before performing this
WARNING
operation.
! The Resettable Total and Total registers will be automatically
To calibrate the K24, the value indicated by the partial totaliser
changed to the new unit of measurement. NO new calibration is
(example 9.800) must be forced to the real value marked on the
graduated sample container. required after changing the Unit of Measurement.
In the bottom left part of the display an arrow appears (upwards
and downwards), THAT SHOWS the direction (increase or
decrease) of the USER K FACTOR value change when the
F MAINTENANCE
operations 6 or 7 are performed
SHORT RESET KEY KEYING
6
K24 has been designed to require a minimum amount of maintenance.
Arrow direction changes. The operation can be repeated IF
The only types of maintenance required are the following:
NECESSARY
1. Battery change – necessary when the batteries have run down
2. Cleaning of the turbine with washing or mechanically-handling
SHORT/LONG CAL KEY KEYING 1 Battery Replacement
7
K24 is complete with 2 x 1.5 V. alkaline batteries SIZE AAA.
The indicated value changes in the direction indicated by the arrow
- one unit for every short CAL key keying K24 features two low-battery alarm levels:
- continually if the CAL key is kept pressed.
(for the first 5 units slowly and then quickly).
If the desired value is exceeded, repeat the operations from point (6).
1) When the battery charge falls below the first level on
LONG RESET KEY KEYING
8
the LCD, the fixed battery symbol appears.
K24 is informed that the calibration procedure is finished.
Before doing this, make sure the DISPLAYED factor is the
In this condition, K24 continues to operate correctly,
ACTUAL factor.
but the fixed icon warns the user that it is ADVISABLE
to change the batteries.
2) If K24 operation continues without changing the
Indicated value Real value
batteries, the second battery alarm level will be
K24 calculates the new USER K FACTOR. This calculation could
reached which will prevent operation. In this condition
require a few seconds, depending on the correction to be made.
the battery icon starts to flash and is the only one to
During this operation the arrow disappears but the CAL indication
remain visible on the LCD.
remains.
If this operation is performed after operation (5), without changing
WARNING
the indicated value, the USER K FACTOR would be the same as
!
the FACTORY K FACTOR, thus it is ignored. Do not discard the old batteries in the environment. Refer to
NO OPERATION local disposal regulations.
9
At the end of the calculation, the new USER K FACTOR is
shown for a few seconds, after which the restart cycle is To change the batteries, with reference to the exploded diagram positions,
repeated to finally achieve standby condition.
proceed as follows:
ATTENTION: From now on, the indicated factor will become
• Press RESET to update all the totals
the calibration factor used by the meter and will continue to
• Loosen the 4 fixing screws of the lower cover
remain such even after a battery change
• Remove the old batteries
NO OPERATION
10
• Place the new batteries in the same position as the old ones
K24 stores the new calibration factor and is ready
• close the cover again, by positioning the rubber protection as a gasket
for dispensing, applying the newly defined USER K FACTOR.
• K24 will switch on automatically and normal operation can be resumed.
The K24 will display the same Reset Total, the same Total and the same
D3.3 Direct modification of K factor
Partial indicated before the batteries were changed.
This procedure is especially useful to correct a "mean error" obtainable on the basis
After changing the batteries, the meter does not need calibrating again.
of several performed dispensing operations. If normal K24 operation shows a mean
percentage error, this can be corrected by applying to the currently used calibration
factor a correction of the same percentage. In this case, the percentage correction
2. Cleaning
of the USER K FACTOR must be calculated by the operator in the following way:
Only one operation is necessary to clean the k24.
( )
100 - E% AAfter removing k24 from the plant where it was built in, any residual elements
New K Factor = Old K Factor
* 100 can be removed by washing or mechanically-handling.
Example:
If this operation does not restore a smooth rotation of the turbine, it will have
Error percentage found E% - 0.9 %
to be replaced.
CURRENT calibration factor 1,000
New USER K FACTOR 1,000 * [(100 – ( - 0,9))/100]=
1,000 * [(100 + 0,9)/100] = 1.009
WARNING:
!
Do not use compressed air onto the turbine in order to avoid its
If the meter indicates less than the real dispensed value (negative error) the new
damage because of an excessive rotation
calibration factor must be higher than the old one as shown in the example. The
opposite applies if the meter shows more than the real dispensed value (positive
error).
G. MALFUNCTIONS
OPERATION DISPLAY
Problem Possible Cause
1 NONE
K24 in STAND BY: not in counting mode.
LCD: no indication Bad battery contact
Wrong K FACTOR
2 LONG CAL KEY KEYING
Not enough
K24 enters calibration mode, shows "CAL" and displays the
measurement
calibration factor being used instead of the partial. The words
The meter works below
"Fact" and "USER" indicate which of the two factors (factory or
precision
user) is currently being used. minimum acceptable flow
3 rate.
LONG RESET KEY KEYING
K24 shows "CAL" and the partial at zero.
Reduced or zero
K24 is ready to perform on-site calibration by dispensing.
TURBINE blocked
flow rate
The meter does Incorrect installation of
4
LONG RESET KEY KEYING
not count, gears after cleaning
We now go on to Direct change of the calibration factor:
the word "Direct" appears together with the Currently Used
but the flow rate is Possible electronic card
calibration factor. In the bottom left part of the display, an
correct problems
arrow appears (upwards or downwards) defining the direction
(increase or decrease) of change of the displayed value when
subsequent operations 5 or 6 are performed.
5 SHORT RESET KEY KEYING
Arrow direction changes. The operation can be repeated to
alternate the direction of the arrow.
6 SHORT/LONG CAL KEY KEYING
The indicated value changes in the direction indicated by the arrow
- one unit for every short CAL key keying
- continually if the CAL key is kept pressed. The speed
increase rises by keeping the key pressed. If the desired value is
exceeded, repeat the operations from point (5).
7 LONG RESET KEY KEYING
K24 is informed that the calibration procedure is finished.
Before performing this operation, make sure the indicated
value is that required.
8 NO OPERATION
At the end of the calculation, the new USER K FACTOR is
shown for a few seconds, after which the restart cycle is
repeated to finally achieve standby condition.
ATTENTION: From now on, the indicated factor will
become the calibration factor used by the meter and will
continue to remain such even after a battery change.
9 NO OPERATION
The K24 stores the new work calibration factor and is ready
to begin dispensing, using the USER K FACTOR that has just
been calculated.
ENGLISH ENGLISH
H TECHNICAL SPECIFICATIONS
Measurement system TURBINE
Resolution Hi Flow 0.010 lit/pulse
(nominal)
Low Flow 0.005 lit/pulse
Register Unit of
Measurement of the Totals
Partial Register Flow Rate K24 COL. 5 ÷ 120 (Litres/minute) FOR DIESEL
Register
(Range) BLACK Flow- FUEL, WATER,.
Litres (L) Litres (L)
rates:
Gallons (Gal) Gallons (Gal)
Quarts (Qts) Gallons (Gal)
K24 COL. 5 ÷ 100 (Litres/minute) FOR WATER/
Pints (Pts) Gallons (Gal)
BEIGE Flow- UREA SOLUTION..
rates
Operating pressure (Max) 10 (Bar) 145 (psi)
Bursting pressure (Min) 40 (Bar)
Storage temperature (Range) -20 ÷ + 70 (°C)
Storage humidity (Max) 95 (% RU)
Operating temperature (Range) -10 ÷ + 50 (°C)
Flow resistance 0.30 Bar at 100 lit/min.
Viscosity (Range) 2 ÷ 5.35 cSt
Accuracy ±1% after calibration within
10÷90 (litres/min) 2,65÷23,8 (gallons/
min) range
Reproducibility (Typical) ±0,3 (%)
Screen Liquid crystals LCD. Featuring:
- 5-figure partial
- 6-figure Reset Total plus x10 / x100
6-figure non reset Total plus x10 / x100
Power Supply 2x1.5 V alkaline batteries size AAA
Battery life 18 ÷ 36 months
Weight 0.25 Kg (included batteries)
Protection IP65
I DISPOSAL
The components must be given to companies that specialise in the disposal
and recycling of industrial waste and, in particular, the
DISPOSAL OF PACKAGING.
The packaging consists of biodegradable cardboard which can be delivered to
companies for normal recycling of cellulose.
DISPOSAL OF METAL COMPONENTS
The metal components, both painted and stainless steel, are usually recycled
by companies that are specialised in the metal-scrapping industry.
DISPOSAL OF ELECTRIC AND ELECTRONIC COMPONENTS:
these have to be disposed by companies that are specialised in the disposal
of electronic components, in accordance with the instructions of 2002/96/EC
(see text of Directive below).
ENVIRONMENTAL INFORMATION FOR CUSTOMERS IN THE EUROPEAN
UNION
European Directive 2002/96/EC requires that the equipement
bearing this symbol on the product and/or its packaging must
not be disposed of with unsorted municipal waste. The symbol
indicates that this product should be disposed of separately
from regular household waste streams. It is your responsibility
to dispose of this and other electric and electronic equipment via
designated collection facilities appointed by the government or
local authorities.
DISPOSAL OF OTHER PARTS:
The disposal of other parts such as pipes, rubber seals, plastic components
and cables should be entrusted to companies that special in the disposal of
industrial waste.
DECLARATION OF CONFORMITY
Azione Correttiva
In accordance with directive:
Check battery contacts
89/336/EEC (electromagnetic compatibility) and
amendments
With reference to
paragraph H, check the K
FACTOR PIUSI S.p.A. - 46029 Suzzara (Mantova) Italy
declares that the following flowmeter model
Increase the flow rate until
an acceptable flow rate K24
range has been achieved which this declaration refers to, complies with the following applicable
norms:
Clean the TURBINE
European norms: EN 61000-6-1; EN 61000-6-3; EN 55014-1-2000;
EN55014-2-97
Repeat the reassembly
procedure
Contact your dealer
Suzzara, 01/10/2007 _ _ _ _ _ _ _ _ _ _ _ _ _ _
the President. Otto Varini
K24
ELECTRONIC TURBINE
METER
MANUALE D'USO, MANUTENZIONE
Italiano
E CALIBRAZUIONE
USE, MAINTENANCE AND
English
CALIBRATION MANUAL
Bulletin M0171ITEN rev. 1
subsequent