PITSID IPA CONTROL EXACT User manual

Operating Manual
IPA CONTROL EXACT
for Controlling Isopropyl Alcohol Concentration
Polygraphische innovative
Technik Leipzig
PITSID Polygraphische innovative Technik Leipzig GmbH
Mommsenstrasse 2 | D-04329 Leipzig, Germany
Tel +49 (0) 3 41 . 2 59 42-0 | Fax +49 (0) 3 41 . 2 59 42-99
[e-mail] | www.pitsidleipzig.com
EN

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DOC_IPA_CONTROL_EXACT_ENG_20190122
CONTENTS
1. Field of Application 5
2. Operating Principle 5
3. Device Configuration, Control Elements 6
4. Measurement Procedure and Proper Handling 6
5. Adjustment, Diagnosis 9
6. Cleaning 10
7. Maintenance, Repairs 10
8. Transport, Storage 10
9. Technical Data 11

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DOC_IPA_CONTROL_EXACT_ENG_20190122
. Field of Application
This device serves to control the isopropyl alcohol concentration in
the dampening solution from oset printing presses. The measure-
ment is made by hand externally from the dampening solution
preparation system. Temperature compensation calculations are
not necessary. With the help of the heatable measuring dish, the
dampening solution is tempered before every measurement which
assures a high measurement accuracy.
The dampening solution can be taken from any point in the
dampening solution circulation of the printing press.
. Operating Principle
The IPA CONTROL EXACT measuring device operates based on the
principle of gas extraction with a subsequent gas analysis.
A dampening solution sample is taken from the printing press and
is poured in the measuring dish. Then, the measuring head of the
hand-held device is placed in the measuring dish so that the
resulting IPA-air mixture above the dampening solution is chan-
nelled to the gas sensor.
This sensor determines the isopropyl alcohol content of the gas.
The IPA concentration in the dampening solution is calculated
based on the measured liquid temperature and the sensor signal.

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DOC_IPA_CONTROL_EXACT_ENG_20190122
. Device Configuration, Control Elements
▬ The measuring device consists of a hand-held device with a
measuring head and a cable-connected heatable measuring
dish. Electrical power is supplied by the provided plug-in
power supply unit. All of the buttons necessary for operation
are found on the hand-held device. Input prompts (operating
instructions) and measurement results are shown on the
display.
. Measurement Procedure and Proper Handling
Attention: Before beginning a measurement, it should be assured
that the measuring device is acclimatised to the temperature of
the measuring environment. Otherwise large measurement errors
can occur due to the formation of condensation in the measuring
head. Please be aware of this especially in the cold and hot times
of the year!
▬ Place the hand-held device and the measuring dish on a
stable and flat surface and connect the two together. Do not
yet place the measuring head in the measuring dish. Turn on
the measuring device by shortly pressing the on/o button.
Measuring head
Measuring dish
Display
Selection buttons
Enter button (>>>)
on/o button
Measuring dish
connection port
Power supply
connection port

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DOC_IPA_CONTROL_EXACT_ENG_20190122
▬ After turning on, the temperature is checked making sure that
the device is within the allowable operating temperature
range (15-30 °C) and is ready for measurement. The current
device temperature and a corresponding message is shown
on the display.
▬ When an allowable operating temperature is reached, the
following message is shown on the display, “Detection of
ambient temperature”. The measuring head is still not
allowed to be submerged in the dampening solution. By
confirming the request, the actual ambient temperature is
saved and the device is ready for measurement. The main
menu is shown in the display with the following items:
•Measure
•Service
▬ By using the selection buttons, navigate to “Measure” and
press the enter button „>>>“. The actual measurement does
not yet begin, however.
▬ Fill the measuring dish with 25 ml of dampening solution
immediately before the measurement. Use the delivered tool
for taking a precise sample in order to avoid overfilling, which
could cause the measuring dish to overflow when the meas-
uring head has been placed. An accurate amount also avoids
an unnecessarily long warm-up time.
▬ Now place the measuring head inside the measuring dish. The
frame of the measuring head should rest evenly on the
heating plate. This is assured due to the construction of the
measuring device when placed on an even surface. Do not
place any additional underlays underneath the measuring
dish or the hand-held device!
▬ Begin the measurement by pressing the enter button „>>>“.
▬ The dampening solution will then be warmed-up to a tem-
perature between 20 °C and 25 °C. The message “Heating
phase“ as well as the actual and target temperature is shown
on the display. Attention: The measuring dish heating plate
will become hot during the heating phase! Do not touch the
heating plate! Do not start a measurement without dampen-
ing solution in the measuring dish!

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DOC_IPA_CONTROL_EXACT_ENG_20190122
▬ As soon as the necessary temperature is reached, the heating
phase is ended and the actual measuring phase automatically
takes place. The messages “Measuring phase“ as well as the
“Time remaining“ are shown in the display.
▬ After the measuring phase has ended, the calculated IPA
concentration of the liquid is shown expressed as a volume
percent. If no new measurement is started, the device shuts
o automatically after 5 minutes.
▬ Empty the measuring dish after every measurement and dry
the measuring dish and the measuring head with an absorb-
ing cloth. In this way, any residual dampening solution
cannot influence any successive measurements and keeps the
measuring device clean from contaminants.
Information about the Measurement
▬ Measuring samples which have more than 20 vol% IPA or
contain other flammable liquids can damage the sensor!
Chemical substances which contain sulphur compounds
(e.g. H2S), heavy-metal compounds (e.g. lead), silicon com-
pounds or silicone compounds can also damage the sensor
permanently!
▬ The gas sensor which is found inside the measuring head
must not come into direct contact with liquids. For is reason:
• Only make measurements with the measuring dish belong-
ing to the device!
• For drying the measuring head only use a dry, at the most a
moistened cloth and wipe the inside area of the head. Do
not accidentally trigger a measurement during cleaning!
• Never hold the measuring head with the opening facing
upwards and rinse it with a liquid (e.g. water)!
▬ Any IPA vapours and solvent vapours found near the device
surroundings can distort the measurement results. Remove
any substances or objects that can influence the measure-
ment, e.g. cleaning rags soaked with solvent!

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DOC_IPA_CONTROL_EXACT_ENG_20190122
▬ If the dampening solution temperature drops below the set
minimum temperature during the measuring phase, a new
heating phase and then a new measuring phase will begin.
▬ Under extreme conditions (very low dampening solution
temperature and low ambient temperature), it is possible that
the maximum allowable heating time of 150 seconds will be
reached. In this case, the measurement with the now pre-
heated dampening solution will need to be manually restarted.
A corresponding message will be shown on the display.
▬ A dampening solution temperature above 25 °C can similarly
not be measured. In this case, the measurement should be
restarted with a new, cooler dampening solution sample
taken from the printing press.
. Adjustment, Diagnosis
▬ Selecting “Service“ in the main menu opens the service menu
with the items:
• Language
• Device Test
• Parameters
Under “Language“ the operating language (English/German)
can be chosen.
▬ Selecting “Device Test“ performs a function test of the device.
The current measured values for the gas sensor voltage and
the temperature are shown. The motor in the measuring head
is also started (audible). The function test is ended by press-
ing the on/o button.
▬ Under “Parameters“ is an operating time counter for the
individual device components.
▬ The menu items “Device Test“ and “Parameters“ are intended
to be used for possible diagnoses or service issues and are not
needed for normal operation.

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. Cleaning
▬ Contaminants on the device can be removed using normal
cleaning agents.
▬ The measuring head as well as the measuring dish should not
be held or submerged under running water! The electrical
components contained inside can be destroyed as a result.
. Maintenance, Repairs
▬ To ensure a high measurement accuracy, the device should be
maintaned regulary. We recommend a time interval of 1 year.
▬ Repairs and service measures are carried out solely by the
manufacturer.
. Transport, Storage
▬ The device is to be operated and stored in a dust-free and
moisture-free place. Only the measuring head is allowed to
be immersed in the dampening solution-filled measuring dish.
▬ Mechanical stresses, impacts and drops are to be avoided
with the device as they can cause a change to the sensitivity
to the gas sensor.
▬ It is recommended to avoid extreme temperatures while
transporting and storing the device. The device should
acclimatise to room temperature for about 45 minutes before
beginning measurements. Please be aware of this especially
in the cold and hot times of the year!

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DOC_IPA_CONTROL_EXACT_ENG_20190122
. Technical Data:
Gas sensor
measurement principle Heat tone (catalytic)
Measurement range 0.0 to 8.0 vol% IPA
Dampening solution
temperature +5 to +25 °C
Dampening solution
sample amount 25 ml
Operating temperature +15 to +30 °C
Resolution 0.1 vol% IPA
Measurement accuracy
(for water/IPA mixture) ≤±0.3 vol% IPA
Measurement time 60 s in addition to heating time
(dependant on dampening solution
temperature)
Power supply Electrical mains using provided
plug-in power supply unit
Automatic shut-o After 5 min operation without entry
Dimensions (L x W x H) Hand-held device: 255 x 100 x 64 mm
Measuring dish: 122 x 68 x 19 mm
Weight Hand-held device: 0.50 kg
Measuring dish: 0.15 kg
Scope of delivery Hand-held device, heatable measuring
dish, tool to take dampening solution
samples, plug-in power supply unit,
carrying case, operating manual