Hydrotechnik Multi-Handy 2040 User manual

-1-
Please read the user instructions carefully, before putting the measuring instrument in operation.
User Manual
User Manual
for
for
Multi-Handy 2040
Multi-Handy 2040
L3160-00-25.00E
L3160-00-25.00E
COPYRIGHT ©1998 HYDROTECHNIK GmbH L3160-00-25.00E, Edition 1998 Oct.12
p
1
Q
Prog ENT
T
p
p
2
US
SI
0-204-20
p
( p
1
-p
2
)
Multi Handy 2040
OFF
ON
128.6
n
p1 =
[bar]

-2-
Preface
The user manual in hand is a description of the hand held measuring instrument Multi-Handy 2040 with the following measuring
inputs:
- 2 measuring inputs for sensors with standardised, analogue output signals of 0 to
20 mA or 4 to 20 mA. The measuring channel p1 is prepared for the measurement
of pressure only. In the second measuring channel p2 temperature, volume flow rate
and RPM can be measured additionally, besides pressure.
You will surely have no problems in handling the Multi-Handy 2040, but you will only be able to use all possibilities of the
instrument, if you know it well.
Should you have any difficulties in understanding nevertheless, please do not hesitate to contact us, we will do our best to help
you.
We reserve the right to make modifications, necessary for the technical progress.
We wish you a lot of success for the application of our hand held measuring instrument
Multi-Handy 2040

-3-
Preface
General ..................................................................................................................................................................
Instruction for the correct charging of the internal instruments batteries ...................................................................
Important comments .................................................................................................................................................
1. Operation Multi-Handy 2040 .............................................................................................................................
1.1 Display examples .....................................................................................................................................................
1.2 Initialisation...............................................................................................................................................................
2. Programming.........................................................................................................................................................
2.1 Selection of unit of measurement .............................................................................................................................
2.2 Selection of pressure sensor for signal 0 to 20 mA or 4 to 20 mA ...........................................................................
2.3 Checking of current signal adjustment......................................................................................................................
2.4 Error message at 4 to 20 mA sensors .......................................................................................................................
2.5 Measuring value display at 4 to 20 mA sensors .......................................................................................................
3. Measurement of pressure .................................................................................................................................
3.1 Selection of pressure measuring ranges ...................................................................................................................
3.2 Zero point alignment ................................................................................................................................................
3.3 Measurement of pressure peaks ...............................................................................................................................
3.4 Invocation of min/max. values in the display ............................................................................................................
3.5 Deletion of pressure peak .........................................................................................................................................
3.6 Change-over from measurement of pressure peaks to normal pressure measurement .............................................
3.7 Measurement of pressure differential .......................................................................................................................
4. Measurement of temperature ..........................................................................................................................
5. Measurement of volume flow rate ..................................................................................................................
5.1 Input of calibration value ..........................................................................................................................................
5.2 Zero point alignment ................................................................................................................................................
6. Measurement of rev. speed...............................................................................................................................
6.1 Input of calibration value ..........................................................................................................................................
6.2 Zero point alignment ................................................................................................................................................
6.3 Further technical advice for the measurement of rev. speed ......................................................................................
7. Technical data of Multi-Handy 2040 ...............................................................................................................
8. Pin connections of Multi-Handy 2040..............................................................................................................
8.1 Technical background information for connection of pressure sensors,
0 to 20 mA- and 4 to 20 mA-type..............................................................................................................................
9. Error detection .....................................................................................................................................................
10. Information on guarantee ..................................................................................................................................
11. Maintenance..........................................................................................................................................................
4
5
6
7
7
9
10
10
10
11
11
11
12
12
13
14
14
14
14
15
16
17
17
17
18
18
18
19
20
21
22
23
24
24
Index

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General
The measuring instrument Multi-Handy 2040 of company HYDROTECHNIK GmbH, Limburg is an efficient hand held measuring instrument for
the measurement of pressure, pressure peaks, pressure differential, volume flow rate, rev. speed and temperature.
The Multi-Handy 2040 doesn’t depend on a fixed power supply due to its rechargeable batteries.
For the recharge of the batteries an external plug-in power supply unit is provided.
The instrument disposes of 2 measuring inputs for the connection of sensors with a standardised, analogue output signal of 0 to 20 mA or
4 to 20 mA.
A direct measurement of frequency can’t be realised with this instrument.
However, with corresponding frequency/current converters (F/DC-converters), it is possible to convert the frequency signals into standardised
4 to 20 mA signals, which can be evaluated by the measuring instrument.
In doing so it is possible to measure RPM and volume flow rate.
It is also possible to connect sensors that were not produced by HYDROTECHNIK.
In doing so, you only have to pay attention to the above-mentioned output signals of the sensors and to a supply voltage among 14,4
and 30 VDC.
Temperature sensor
4 to 20 mA
Mains adapter 230 VAC
secondary 24 VAC
Gear flow meters GFM, with
magnetoresistor sensor
and F/DC-converter
output signal 4 to 20 mA
Measurement of temperature
Charging of battery
or
Connection possibilities for the Multi-Handy 2040 with HYDROTECHNIK-sensors
p1p2
or
alternatively
Pressure sensor type HD
4 to 20 mA
Scanning of rev. speed from gear wheels:
inductive transducer with F/DC-converter
output signal 4 to 20 mA
Measurement of volume flow rate
Measurement of pressure
Pressure sensor type HD
Measuring turbine RE3/RE4
inductive transducer with F/DC-converter
output signal 4 to 20 mA
Measurement of RPM
With optical rev. speed probe DS 03
with F/DC-converter
output signal 4 to 20 mA
Measurement of pressure
Measurement of RPM
p
1
Q
Prog
ENT
T
p
p
2
US
SI
0-20
4-20
p
( p
1
-p
2
)
Multi Handy 2040
OFF
ON
128.6
n
p1 =
[bar]

-5-
Instructions for the correct charging of the internal instrument batteries
Before using the measuring instrument you should ensure, that the internal NiCd-batteries have their full capacity.
By use of the HYDROTECHNIK plug-in power supply unit (primary 230 VAC, secondary
24 VDC) a continuous charging of the batteries is guaranteed.
When using the instrument the first time, you should take into consideration, that the batteries aren’t charged completely by HYDROTECHNIK.
Therefore we recommend you to connect the plug-in power supply unit for charging the batteries for at least 14 to 16 hours.
This time should be kept in any case.
If a power supply unit from another manufacturer or a car battery of 12V is used, the instrument can be used for measuring, but the recharging
of the batteries can’t be guaranteed.
For a safe recharging of the batteries you always need a stabilised power source with a direct voltage from 24V to max. 30V.
Should the batteries be discharged, a charging time of 16 hours needs to be kept.
During this, the instrument should be switched-off !
The service life of NiCd-cells can be very long, but this always depends on the operating conditions. You should avoid a 100% discharging as
well as a permanent charging or a charging after each operation.
If the batteries are recharged after a discharging below 50% only, the service life of the NiCd-cells will be influenced positively.
A recharging after a very short operation of the instrument will affect the batteries, as the well-known memory effect of the NiCd-cells will
reduce their capacity.
That means, if you use the instrument only for a short period and if only a part of the batteries’ capacity is used up, you shouldn’t charge them
directly afterwards.
If you do so for a longer time, the capacity of the cells will be reduced and the batteries may be damaged permanently.
However, they can be regenerated again by several charging- and discharging cycles, that means by using the measuring instrument for a
longer period and a following recharging.
If the charging of the batteries isn’t sufficient, a message „Charge battery !“ will be displayed. In this case the batteries are discharged in a way,
that you will have to recharge them for at least 16 hours !

-6-
Please take the following,
Important comments
concerning your security and the operational security of your instrument, into consideration:
-Don’t submit the instrument to extreme heat or humidity.
-Never open the instrument by yourself.
-Please pull the mains adapter out of the wall socket under the following circumstances:
1.during a thunderstorm
2.if you detect a bad smell or smoke
-Please protect your sensors from overloads:
1.exceeding the allowed voltage supply range
2.overloading the allowed pressure measuring range mechanically
3.wrong pin configuration, especially at sensors from other manufacturers
For your special attention:
Should the housing be polluted, please clean it with a soft cloth, moistened with a mild detergent (Please pay attention to the notes of the
manufacturer).
Strong chemical solvents may not be used, as they attack the housing.
Make a contribution to the environmental protection
Used batteries do not belong into the household refuse.
Please throw your batteries into a special receptacle for disposal of refuse and sewage.
Recycling for environment’s sake !

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Two measurable variables can be shown at the same time on the 2-line LCD-
display.
The first line is reserved for the pressure channel p1. In the second line either
pressure p2, temperature T, volume flow rate Q or rev. speed n can be shown.
On the keyboard you will find several keys, which can only be pressed in
connection with another key.
These are the keys and .
In doing so you have to take into consideration that the period between pressing
the first and the second key must not be longer than three seconds.
After three seconds the key pressed first will be ignored.
All inputs need to be finished with „Prog/ENT“.
Depending on the number and the type of variables, the values are displayed in
different sizes.
In the following you will find several examples about the display-possibilities of
your instrument.
After having switched on the instrument, this menu will appear for approx. three
seconds.
When the instrument is switched on again, the display for pressure p1 and p2 will
always appear.
By pressing for example key the measuring value display can be
switched to an enlarged display. However, only the pressure measuring value of
p1 is shown, see left.
If the measuring value of p2 shall be shown in the same size, the user only has to
press key .
The pressure measuring value of p2 is shown.
Another stroke of key returns to the usual display with two lines,
indicating the measuring values of p1 and p2, see picture on the left.
1. Operation Multi-Handy 2040
1.1 Display examples
initialisation
version 1.0
128.5
96.4
p1
[bar]
p2
[bar]
p1
[bar] 128.5
p2
[bar] 96.4
128.5
96.4
p1
[bar]
p2
[bar]
Prog ENT
p
p
2
p
1
p
2

-8-
p1^ 128.5 / 345.2
p2^ 96.4 / 297.3
Display of extreme values (min/max.) of for example p1 min. and p1
max. in the first line and p2 min. and p2 max. in the second line.
You can have the extreme values displayed by pressing the keys
and and in the second line by pressing the
keys and .
The normal pressure display is shown by pressing the keys P1 and P2.
Display of the two pressure measuring values p1 and p2.
The next display shows a pressure differential out of these values.
After a stroke of key the measuring value from
Dp = p1 - p2 is displayed in the second line.
As already described on page 7, an enlargement of the display can be
achieved by pressing key and key .
The two pictures show the display (enlarged) of „p1“ and „dp“, as an
example.
Measurement of volume flow rate Q instead of p2 in the second line of
the display.
Temperature measurement T instead of p2 in the second line of the
display.
These two displays can be enlarged, too.
We have refused to give further examples to avoid confusion.
128.5
96.4
p1
[bar]
p2
[bar]
128.5
32.1
p1
[bar]
dp
[bar]
p1
[bar] 128.5
dp
[bar] 32.1
p1
[bar]
Q
[l/min]
128.5
146.7
p1
[bar]
T
[°C]
128.5
19.7
p
( p
1
-p
2
)
p
1
p
( p
1
-p
2
)
p
p
1
p
p
2

-9-
The re-initialisation is started by switching the measuring instrument on and by
pressing the following keys within 3 seconds:
and and
Afterwards the user can select one of the three fixed languages, German, English
or French.
By pressing key , which is now acting as a cursor, one language
can be chosen directly in the display.
The selection needs to be confirmed with key .
The instrument automatically asks for the initialisation. The user can decide
whether he wants to initialise or not.
If no initialisation is requested any key except „Prog/Ent“ may be pressed and the
measuring value display is shown.
If you request an initialisation and press key , all data like
calibration value, language, units of measurement, selection of the output signal
of the pressure sensors, entered previously by the user, is deleted or reset to a
work’s adjustment.
The display „INIT“ is shown for a short period with a rotating bar.
This indicates, that the preadjustments are stored in the EEPROM.
Afterwards the instrument returns directly into the measuring value display.
After an initialisation, the following basic adjustments are integrated
automatically:
- Pressure measurement p1 and p2 in the display
- Pressure measuring range programmed to 0 to 200 bar
- Signal inputs of p1, p2 and T (temperature) adjusted to 0 to 20 mA
- All calibration values of Q (volume flow rate) set to zero
- Pulses per revolution of rev. speed measurement set to zero
- Language: German
- Measuring units in SI
1.2 Initialisation
It can happen, that the information in digital storage systems is distorted, due to very heavy electromagnetic interference, which still can occur
today in industrial plants.
This shows itself in an amount of data that must be considered unrealistic or the instrument doesn’t react on a keystroke any more.
For this case the instrument has the possibility to set all data back to a given state by a so-called re-initialisation. However then, all data like
calibration value, language, units of measurement, output signal of the pressure- and temperature sensors and all parameters, entered
previously by the user, are deleted.
SPRACHE / LANGUAGE
Deutsch
p
( p
1
-p
2
)
p
( p
1
-p
2
)
p
( p
1
-p
2
)
english francais
initialisation
version 1. 0
INIT?
Prog ENT
0.0
0.0
INIT? 26.05.98
PROG->yes
p1
(bar)
p2
(bar)
INIT? 26.05.98
PROG->yes
p1
[bar]
p2
[bar]
0.0
0.0
p
1
p
2
p
( p
1
-p
2
)
p
( p
1
-p
2
)
Prog ENT
Prog ENT

-10-
The change-over to 4 to 20 mA is made by a stroke of key , which is now acting as a cursor and which switches p1 to the
requested current signal. Please take into consideration, that a flashing bar signalises the switching from 0 to 4 (mA) in the example.
A stroke of key , which is also used as a cursor in this case, switches directly to p2.
Here the current signal can be switched to 4 to 20 mA with key , too, as already mentioned above.
The switching back to 0 to 20 mA is made in the same way.
Please don’t forget to press key „Prog/ENT“ to confirm your selection. The above diagram shows the course of the operation in detail.
In the example both sensors were switched to 4 to 20 mA, of course the adjustments of every single channel can differ.
With the cursor key, showing to the right, the corresponding measuring channel will be selected.
With the cursor key, showing upwards, the current range 0 to 20 mA or 4 to 20 mA can be selected.
The selection must be confirmed with key .
By pressing key and key this menu is invoked.
With a stroke of key , which serves now as a cursor, you can
switch over from SI- to US-units.
The SI-units are for example bar, °C, l/min., etc..
After the change-over to US-units, the usual units like psi, °F,
gal/min. are used.
The calibration and the selection of the measuring range are always
carried out in the corresponding SI-unit.
As it is possible to connect pressure sensors with an output signal of either
0 to 20 mA or 4 to 20 mA, it is imperative to inform your measuring instrument
about the signal-type of your sensor.
2.2 Selection of pressure sensor for signal
0 to 20 mA or 4 to 20 mA
By pressing key and key , the following program is invoked.
0-204-20
Prog ENT
2. Programming
2.1 Selection of unit of measurement
* * * UNIT * * *
SI
p
( p
1
-p
2
)
US
* * PROG SENSORTYPE* *
p1: 0-20 p2 : 0-20 mA
T : 0-20 Q : 0-20 mA
N : 0-20
4
p
p
( p
1
-p
2
)
p2 : 0-20
Prog ENT
US
SI
p
( p
1
-p
2
)
p
( p
1
-p
2
)
p
p
( p
1
-p
2
)
Prog ENT