HYDAC HMG 3010 User Manual
Portable Data Recorder
HMG 3010
Operating Manual
(Original Manual)
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Table of contents
1 Tasks and Functions of the HMG 3010 .......................................................4
1.1 Standard functions of the HMG 3010..............................................................4
1.2 CAN functions of the HMG 3010.....................................................................6
2 About Your HMG 3010 ..................................................................................7
2.1 Items supplied.................................................................................................7
2.2 Power supply ..................................................................................................7
3 Technical Safety............................................................................................7
3.1 Safety information...........................................................................................8
4 Commissioning .............................................................................................9
4.1 Operating Elements ........................................................................................9
4.2 Connections..................................................................................................10
4.3 Switching on the instrument..........................................................................11
5 Getting Started Guide.................................................................................13
6 Detailed Operating Instructions................................................................18
6.1 Settings Menu...............................................................................................18
6.1.1 Change settings of measurement channels ...........................18
6.1.2 Changing Display Settings .....................................................29
6.1.3 Zeroing Measurement Channels ............................................31
6.1.4 Changing the Initial Setup ......................................................33
6.1.5 Administer settings (save, load, ...) .............................36
6.2 Recording Menu............................................................................................38
6.2.1 Starting a Recording ..............................................................38
6.2.2 Viewing Recordings ...............................................................56
6.2.3 Deleting Recording.................................................................67
6.3 Extras Menu..................................................................................................68
6.4 SMART sensors............................................................................................70
6.4.1 Connecting SMART Sensors .................................................70
6.4.2 SMART Sensors Menu ..........................................................71
6.5 CAN Functions..............................................................................................74
6.5.1 Electrical connections ............................................................74
6.5.2 Main menu CAN bus ..............................................................75
6.6 Technical data...............................................................................................78
7 Cleaning.......................................................................................................80
8 Accessories.................................................................................................80
9 Examples of Connections ..........................................................................82
9.1 Pin assignment .............................................................................................83
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1 Tasks and Functions of the HMG 3010
1.1 Standard functions of the HMG 3010
The HMG 3010 portable data recorder is a hand-held unit for measurement and data acquisition tasks on hydraulic and pneumatic systems. Applications are primarily in maintenance
and servicing, troubleshooting and test rigs.
The HMG 3010 can monitor signals from up to ten sensors simultaneously. The unit has 5
input jacks for connecting the sensors; if necessary this number can be doubled using a
Y adapter (if more than 5 sensors are required). HYDAC ELECTRONIC provides suitable
HSI sensors (HYDAC Sensor Interface) for pressure, temperature and flow rate which are
automatically recognised and for which the measuring range and unit are set by the
HMG 3010 - the easiest choice for customers.
You also have the option of connecting SMART sensors to the HMG 3010. These represent
a sensor generation from HYDAC which can output several different measured variables.
These sensors are also automatically recognized by the HMG 3010 via HSI, and the measured values including the measurement unit are shown in the display.
The HMG 3010 can render up to 32 measurement channels in total.
Depending on the sensor type, the sensor has an internal memory for the storage of recorded measurement data on a long-term basis. In addition, depending on the sensor type,
preset parameters can be changed and stored in the internal memory as a sensor configuration.
Older model HYDAC sensors or commonly available sensors made by other manufacturers
can also be used. However, these sensors do not have any automatic sensor detection,
consequently the initial set-up has to be entered manually.
The operator can access all of the unit’s functions and settings by means of clearly presented selection menus. The HMG 3010 has a combination keypad for entering numeric
values and text, similar to a mobile phone.
The HMG 3010 is designed in particular for recording typical measurements (pressure,
temperature, flow rate) in hydraulic and pneumatic systems. A variety of other measurement
tasks can be performed using additional inputs for voltage measurement.
For example, checking the actuation of a switching valve or plotting the characteristic curve
of a valve setpoint. In addition, it is also possible to determine differential values between
the measured values of individual sensors. One example of this is taking a flow rate measurement using a differential pressure orifice.
In addition to the analogue measurement inputs, the HMG 3010 features two digital inputs
(e.g. for measuring frequency or speed), thus expanding the unit’s range of potential applications.
When taking measurements of rapid, dynamic machine processes, all 8 analogue input
signals can be recorded simultaneously at a rate of 0.5 ms.
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One special feature of the HMG 3010 is its ability to also monitor highly
dynamic processes in a machine. To achieve this, two input channels can record measured
values at a rate of 0.1 ms. This function of course requires suitable fast sensors to be used.
The most attractive feature of the HMG 3010 is its ability to record the dynamic processes of
a machine in the form of a measurement curve and render them as a graph — and, moreover, online and in real time.
The HMG 3010 is equipped with specially developed software providing for fast data collection and processing. A measurement curve can consist of up to 500,000 measured values.
The HMG 3010 memory is capable of storing at least 100 such measurement curves.
In addition to enabling simple measurement curves to be recorded, the HMG 3010 also has
other functions enabling event-driven measurements to be taken and event logs to be recorded. Various trigger options are available for triggering events.
Apart from measurement curves, the HMG 3010 can store user-specific settings (user profiles). The main advantage of this is to enable identical measurements of various equipment
items to be repeated for the purpose of preventive maintenance. All the user has to do is
retrieve the relevant user profile from the HMG 3010’s memory.
The HMG 3010 has a 3.5" color display with graphics capabilities, which can show the
measured values either as text or as measurement curve. Individual measured values can
be displayed in a large format (7-segment format), enabling them to be read from far away.
The HMG 3010 also has a variety of user-friendly features for displaying, evaluating and
processing measured values:
• Table
• Graph
• Scaling
• Ruler
• Tracker
• Zoom
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The HMG 3010 communicates with a computer via a USB or serial port. HYDAC software
HMGWIN which is specific to the HMG 3010, is supplied for convenient post-processing,
rendering and evaluation of measurements on your computer. It also enables the
HMG 3010 to be operated directly from your computer.
The HYDAC software CMWIN is also supplied as standard with the unit. This software
enables you to communicate directly from your computer with SMART sensors connected to the HMG 3010.
1.2 CAN functions of the HMG 3010
• Option of connection to CAN-bus using CAN-adapter ZBE 3010 (accessory)
• Read-out and evaluation of up to 32 measured values from up to 32 CAN messages
• Configuration of the measured values from CAN-sensors
• Parameterisation of HYDAC CAN-sensors (in direct connection when bus is inactive)
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2 About Your HMG 3010
2.1 Items supplied
• HMG 3010
• Power supply for 90 ... 230 V
• User Manual
• CD-ROM containing USB drivers and HMGWIN and CMWIN software
(software for analyzing measurement data and sensor communication)
in addition to other product information
• USB connector cable
2.2 Power supply
The HMG 3010 has an internal NiMH battery. To charge the battery, simply connect the
power supply with the HMG 3010 (see HMG 3010 connections, Section 9). The battery is
fully charged after approx. 2 hours.
A direct current supply (12 ... 30 V DC) can be also connected be to the power input socket
to operate the HMG or charge the battery.
When connecting the power supply to the input socket make sure that +U
inner contact of the plug and 0 V to the outer contact. A JEITA RC 5320-5 plug, for example,
is suitable for this purpose and is available in most electrical/electronics shops.
is applied to the
B
3 Technical Safety
The individual components of the HMG 3010 portable data recorder and the assembled unit
are subject to strict quality assurance inspection and testing. Each HMG 3010 undergoes a
final test. This ensures that when supplied the unit is free of defects and complies with the
published specifications.
The series HMG 3010 portable data recorders are maintenance-free and work perfectly
when used under the conditions specified. If, however, you do encounter problems, please
contact your HYDAC representative. Incorrect installation or tampering with the unit shall
invalidate all warranty claims.
Compliance with European Standards
The HMG 3010 series portable data recorders have the CE mark and thus comply with all
current German regulatory requirements and European standards relating to the operation of
these units. This ensures compliance with the applicable directives relating to electromagnetic compatibility and the safety provisions according to the low-voltage directive.
This product complies with the provisions of the following European directives:
EN 61000-6-1 / 2 / 3 / 4.
We reserve the right to make technical modifications.
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3.1 Safety information
The HMG 3010 series Portable Data Recorder can be operated safely provided it is used
in accordance with its proper, designated use. However, in order to avoid any risk to the
operator or any damage due to incorrect handling of the unit, please adhere strictly to the
following safety instructions:
• The HMG 3010 may not be used unless it is in perfect condition/working order.
• The instructions for use must be strictly adhered to. Functions which involve adjust-
ing the zero point in particular can lead to hazardous situations. For more information, please refer to Point 6.1.3 "Zeroing of Measurement Channels".
• The information on the type code label must be noted.
• Troubleshooting and repair work may only be carried out by the HYDAC Service
Department.
• All relevant and generally recognised safety requirements must be adhered to.
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4 Commissioning
4.1 Operating Elements
1
2
3
4
5
6
7
On/Off button
Brightness setting of the display
ESC key
To cancel an entry or go Back step
by step
Shift key (↑)
Switches the number-pad to a
textpad when pressed; the textpad is
active only as long as the Shift key is
pressed.
Text/number keypad
Numbers and letters can be entered
via the combination keypad similar to
that of mobile phones.
Numerals: 0 to 9; “.” (decimal separator) and “-“ (minus)
Text entry: a, b, c, ... x, y, z and A, B, C, ... X, Y, Z; ins = insert; del = delete;
To insert special characters: shift (↑) + "1" (if necessary, several times for /, %, $ ...)
To insert spaces: shift (↑) + ins (simultaneously)
To delete characters: shift (↑) + del (simultaneously)
Line break: shift (↑) + OK (simultaneously)
Tip:
• To accept characters:
release the Shift key (↑) or press the right arrow (►) of the
5-way navigation key.
• To jump directly to the function line:
simultaneously press the Shift key (↑) and the down arrow (▼) of the 5-way
navigation key.
Graphic display
Display of the menu and operating functions, measured values and curves
5-way navigation key
To navigate step by step in the display: OK key for inputting, finishing, accepting or
storing an entry
1
2
3
4
6
7
5
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4.2 Connections
E F G H J
DC IN
USB
RS232
A B C D I Y adapter
A - E
4 sensor input sockets* each with two measurement channels (channel A – D or
E – H) to connect up to 8 analogue sensors or up to 4 SMART sensors, e.g. for
B - F
C - G
pressure, temperature or flow rate sensors.
The four input sockets can be doubled, if required, by plugging in Y adapters (ZBE
D - H
38).
D / H
For connection to CAN-bus:
For connection to CAN-bus, use connection adapter ZBE 3010 (see Point 6.5).
Caution!
When connecting to CAN-bus, a Y-adapter cannot be used on this input socket.
I / J
1 input socket for
-2 digital signals, e.g. for frequency or speed measurements (channel I, J)
DC IN
Female jack for power supply
USB
1 USB connector for PC communication
RS232
1 serial interface for PC communication
*
For overview table of measuring inputs / input signals, see Point 6.6 Technical Specifications
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4.3 Switching on the instrument
When starting the unit up for the first time the
Welcome start-up screen appears. Select
your language using the 5-way navigation key
(select or checkmark your option by pressing
OK) and set the date and time. Select the desired format, and then enter the current date
and time via the keypad. Save your entries by
pressing OK, followed by Next.
The following appears in the display when
starting the unit up in normal operation:
• Manufacturer
• Designation of the instrument
• HMG version
• Date and time
• Battery charge status
The screen switches to measured value
display mode in a few seconds. If sensors
are already connected, the current measured values are shown in the Current
Measured Values menu (see title bar at
top of display). To skip through the startup screen more quickly and proceed directly to the measured values menu, press
Esc or OK.
The following is listed in the measured values
screen (see screenshot): Input channel – Designation – Value – Unit (of measurement)
The menu bar at the bottom of the screen
(function bar) displays the main menu and
next to that, on the right, the battery charge
status. The main menu contains the following functions which you can access using
the navigation key (arrow key) plus the OK
key.
Settings — for entering or retrieving setting data used for performing measurements
Recording — for recording a measurement and graphically rendering measurement data, e.g. as a curve
Note:
As a rule, functions which can be
selected and executed are in blue.
Functions which can’t be selected or altered are in Black.
Warnings appear in red
when input data is incorrect.
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Extras — for other functions,
plus a function for displaying the
Min/Max values.
Measuring the Min/Max values has a special
significance and is explained in more detail
below.
Apart from the current measured values, the
HMG records the minimum and maximum
values (Min/Max values) too, except when
plotting a measurement curve. The minimum
value is the lowest value to which a measured variable has dropped during the time
period under consideration, the maximum
value being the highest value achieved by a
measured variable during this period. Resetting causes the Min/Max values to be set to
the actual measured value at the time. This
will reset all sensors.
The time period always begins when the
Min/Max values are reset. The values are
reset in the following situations:
• Switching the unit on
Note:
Even when the Min/Max values
are not shown in the display,
the HMG is nevertheless recording them in the background.
• Selecting and activating Reset function in
the menu bar
(only if Min/Max is active)
• Connecting or removing an HSI sensor
• Altering the sensor settings
• While recording an event log
• When finishing recording
Before resetting the Min/Max values it is frequently necessary to determine when the
Min/Max values were last reset. To do this, go
to Extras in the function bar and then About
HMG 3010.
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5 Getting Started Guide
This Getting Started Guide outlines the basic steps for conducting a simple measurement
(measured values shown in display) and plotting a measurement curve (graph of measured
values). The examples involve pressure measurement using 2 pressure transmitters with
sensor detection (HSI sensors). For a detailed description of all the settings, see Detailed
Operating Instructions.
The examples are based on the factory settings of the HMG 3010. Simply follow the
steps described here. If you don’t know the status of your HMG 3010 because there
might be more than one user in your company using the HMG, you can simply restore
the unit to its "as supplied" condition (see Manage Settings — Restore Factory Settings).
Preparation for Performing a Measurement
First charge the batteries or connect the power supply as described in Power Supply.
Two HYDAC HDA 4748-H-0400-000 pressure transmitters with automatic sensor detection
are used in the following example.
Example of a Simple Measurement Using Two Pressure Transmitters
Connect the two pressure transmitters
hydraulically to your machine and connect
the two pressure transmitters using the sensor connector cables, e.g. to sockets
A and B of the HMG 3010.
After the HMG 3010 is switched on it jumps
to the Current Measured Values menu. The
function bar contains various functions providing quick access to the three main menus:
- Settings
- Recording
- Extras
and to the display of the
- Min/Max values.
.
Title bar
Function bar
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When HSI sensors with automatic sensor
detection are used, the HMG automatically
detects the measurement range and the unit
of measurement of the two connected pressure transmitters and shows them in the display with the actual measured values. You
can also display the minimum and maximum
values for the sensors.
To hide or show the Min/Max display, press
the right arrow of the 5-way navigation key
until Min/Max is highlighted in blue and then
press the OK key. The Min/Max values of the
sensors are now also displayed. Press the
OK key again to hide the Min/Max display.
When the Min/Max values are shown, Reset
appears in the function bar, enabling you to
reset the Min/Max values as required. Select
Reset using the arrow keys (blue highlight)
and then press the OK key to reset the
Min/Max values.
The measured values can also be displayed
in a 7-segment pane. To do this, go to Set-
tings in the function bar and then press OK.
In the Settings menu, navigate to Change
display settings using the 5-way navigation
key, and then confirm with OK (see screenshot of two-pane display on the next page).
Now select the second item, Measured
value rendering. Measured value table is
the default setting here. Press OK. A drop-
down list appears in which you navigate to 2
display panels using the arrow keys, fol-
lowed by confirming with OK. To return to
the measured value display press Esc twice.
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The HMG now shows the measured values
in the 7-segment display panes. Depending
on the setting, the Min/Max values are
shown in addition to the current measured
values.
The Recording menu is used for recording
measurement curves. During recording, the
measured values are recorded for a certain
period of time, stored and then shown as a
graph.
Example of Recording a Measurement
Curve:
The function bar of the Actual Measured
Values menu contains the item Recording.
Select it using the 5-way navigation key, followed by OK. In the Recording menu that
follows, select Start recording and confirm
with OK.
In the menu that follows, Start Recording,
you are shown the default settings for recording a measurement curve. In our example, we want to generate a Simple meas-
urement curve with two sensors at channels A and B with a sampling rate of 1 ms
and a Recording time of 30 s. Then meas-
urement is to be finished.
Simple measurement curve is already set
in the menu. For the other settings, proceed
as follows:
Using the arrow keys of the 5-way navigation
key, select the third item, Sampling rate. OK
opens up a drop-down list where you select
a sampling rate of 1 ms, confirm with OK.
This takes you automatically to the Re-
cording time line. Press OK. Scroll down
the list using the arrow keys to 30 seconds,
and confirm with OK.
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In the Recording option line, select End
when time has elapsed in the same manner.
In the Automatic operation line, select the
Deactivated option and in the Magnified
section the 5 second option.
Your display now shows the settings you
made for recording measured values (see
screenshot). To double-check your settings,
refer to the recorded data selected by you
above the function bar.
Now you can start recording by pressing
Start in the function bar + OK. A progress
bar shows you the status of your measure-
ment. The function bar offers you the option
of having the measurement curve plotted or
the actual value shown while recording.
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Graphic rendering provides a faster visual
impression of the changes in the measured
values. To have the measurement curve
displayed while recording, select Graph +
OK. The screenshot on the right shows you
the curve plotted for our example.
When recording is finished, you have the
option of saving or discarding the measurement. To save the recording, select Save
and confirm with OK. The HMG automatically assigns a name and a consecutive
number, which can also be renamed by you.
In our example, accept the name suggested
by the HMG and save with OK.
You can view any stored recording again or
delete it as you like. For more information on
this, refer to Detailed Operating Instructions.
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6 Detailed Operating
Instructions
6.1 Settings Menu
Submenus of the Settings menu:
• Change settings of measurement
channels
• Change display settings
• Zero measurement channels
• Change initial setup
• Administer settings (save, load, ...)
• Administer sensor configuration
(not visible unless the configuration of a
SMART sensor has been read out, see
section 6.4.2.5)
6.1.1 Change settings of measurement channels
Select Change settings of measurement
channels to obtain a listing of all the chan-
nels available in the HMG (see screenshot).
There is a checkbox next to each of the
channels enabling you to switch the input
on or off (+ OK key). Activated channels
are marked by an “X”. To the right of the
checkbox is the measurement range set-
ting, the unit of measurement, and, as applicable, a designation for the sensor, e.g.
"System pressure".
For connection to CAN-bus:
If the connection adapter ZBE 3010 is
plugged into D/H, the HMG 3010 automatically switches channel D to CAN-bus and
channel H to off.
For all the setting options for CAN-Bus, see
Section 6.5‚ CAN Functions.
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The various options available for channels A
to H are demonstrated here using channel A
as an example. Select the measurement
range entry on the right of the channel using
the navigation keys and press OK. This
takes you to the menu window for the selected channel.
To enter a designation, press OK again
and then enter it in the box using the combination keypad, followed by OK.
In the Mode menu you now have the option
of Automatic detection (HSI) and Manual.
The Automatic detection (HSI) option is
used for HYDAC sensors which have automatic sensor detection. The Manual setting
is used for adapting sensors with standard
analogue signals (e.g. 4 - 20 mA) to the
HMG.
However, there are applications for which it
is useful to enter settings manually, also in
the case of HSI sensors with sensor recognition. For example, by entering settings
manually for a pressure measurement, you
can have physical variables displayed which
are proportional to the pressure, e.g. force.
Manual mode also provides the following
further settings:
• Input signal
• Upper and lower measurement range
• Unit (of measurement)
• Decimal format
As soon as you select one of these items, a
drop-down list appears or a box appears for
entering your settings.
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For Input signal you can choose between
HSI (HYDAC Sensor Interface) and various
standard analogue signals in the drop-down
list (using the arrow keys). To set the Lower
and Upper measurement range, enter the
relevant limits via the combination keypad.
A drop-down list is also provided for
selecting the Unit (of measurement). You
also have the option of defining your own
unit with other (top line of the drop-down
list). The cursor then jumps to the input
box and a small triangular arrow appears
as the insertion point. Enter the new unit
using the combination keypad, e.g. ”kPa”
for kilopascal.
To enter additional characters, move the
triangle insertion point to the desired position and enter the characters. Confirm your
entry with OK so that your unit of measurement is stored.
Decimal format: Here you can specify how
many decimal places are to be used when
recording and displaying the measured values.
In addition to the settings described above,
Channel B has two further measurement
options. In the Mode drop-down menu you
now also have the menu options Pressure
difference dP and Orifice measurement
Q=f(dP). With Pressure difference dP the
HMG 3010 gives you the opportunity to display the difference in pressure between
channel A – channel B with a very high degree of accuracy. This can be used, for example, to determine if a filter is clogged, by
measuring the pressure differential.
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The function Orifice measurement
Q=f(dP) enables you to carry out a flow
rate measurement by measuring the differential pressure at a flow rate measurement
orifice (e.g. HYDAC EVS 1000).
For both these modes HYDAC HSI pressure transmitters with the same measurement range must be connected to channel
A and channel B. The differential measurement range is produced automatically,
being ± 10% of the measurement range of
the pressure transmitters connected. The
accuracy of the HSI pressure transmitters
is ≤ ± 0.5 % FS.
This means that one 100 bar pressure
transmitter might measure 50 bar pressure
as being 49.5 bar, and another might
measure it as 50.5 bar. These pressure
transmitter errors can be compensated for
by recording a correction curve.
After correctly recording a curve, the accuracy for differential measurement is ≤±0.1%
of the differential measurement range.
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Example:
For both 100 bar pressure transmitters there is a differential measurement range of
-10 – +10 bar, in other words a measurement margin of 20 bar. The accuracy of ≤ ± 0.1%
refers to this measurement margin. The pressure differential can therefore be measured with
an accuracy of ≤ ± 0.02 bar.
To measure a pressure difference, select
the item Pressure differential dP. Then you
find a menu point Organise curves. Here
you can plot up to 3 curves for 3 pressure
transmitter pairs. If a curve for a pressure
transmitter combination already exists, you
can quit the menu again by selecting Back
or the Esc key. The HMG 3010 automatically
selects the appropriate curve. If you quit the
menu and the HMG 3010 detects that no
curve exists for this combination, you will get
the message shown on the right. You can
now, with less accuracy, measure the differential or you call the menu item again to record a new curve under Organise curves.
Once Organise curves is selected, a screen
appears which allows you to record a new
curve, or you see information on curves
which already exist. At this point you can
also delete existing curves if they are no
longer required. If curve 1 already exists,
navigate to this field and press the OK key.
You can now, for example, select Characteristic curve 2, Not available and then record
a curve. To record the curve you must connect both pressure transmitters to the
HMG 3010 at channel A and channel B.
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When doing this, identify which pressure
transmitter has been connected to channel A
and which to channel B, since the pressure
transmitters must be re-connected in the
same way later when taking measurements.
Connect the pressure transmitter
hydraulically so that the two instruments are
subjected to the same pressure. The ideal
for recording curves is connecting to a test
rig on which you can increase the pressure
slowly from 0 bar to the full measurement
range of the pressure transmitter and back
again.
However, the minimum requirement is to
record the curves/measured values in the
pressure range in which the differential
measurement is to take place later.
In the example above (to measure the filter
contamination level) both pressure
transmitters might be fitted to the inlet side of
the filter, e.g. using T-fittings and then, with
the machine running, the curve could be recorded.
When these pre-conditions are in place,
select Record characteristic curve. This
brings up a display showing 0 to 100% of the
whole measurement range. If you increase
the pressure you will see from the blue bar
that measured values are being recorded in
this pressure range.
If the measured values remain under the red
line, this means that not enough values have
been recorded in this range. To achieve
maximum accuracy for differential
measurement, the recorded measured values should at least be in the area between
the red and the green line. After this, select
Stop recording and you can quit the menu.
The curve is now automatically taken into
account for the differential measurement
using these two pressure transmitters.
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In order to measure the flow rate using a
differential pressure measurement at a flow
rate orifice, select the item Orifice meas-
urement Q=f(dP). Then select the number
of decimal places and the unit (of measurement).
A flow rate orifice is supplied with information
showing the correlation between pressure
differential and flow rate. For example, on a
HYDAC EVS 1000 it says: calibration factor
4.87 bar at 350 l/min. Enter these values
under the flow rate and pressure.
Here again the menu Organise curves appears, (for a function description and handling,
see Pressure differential dP above). Curve recording can be carried out exactly as described above.
If you are using a HYDAC EVS 1000 flow rate measurement orifice, you can also use this to
record curves. On the EVS 1000 there are 2 pressure ports before the orifice (ports 1 and 2)
and one after (port 3).
To make a recording, connect the pressure transmitter from channel A to port 1, and the one
from channel B to port 2. To start measurement you need only then to change the pressure
transmitter from port 2 to port 3.
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HMG 3010 Page 25
Input channels I and J are for digital (not
analogue) signals. As the input signal you
can choose between Count pulses and
Frequency signal. There are many possibilities for this, e.g. speed sensors, proximity
switches, pulse generators, flow rate measuring instruments with a frequency signal,
HYDAC HDS 1000, to name only a few. As
in the case of the analogue sensor inputs,
settings can be manually entered for the
input signal, unit of measurement and decimal format.
In addition to these settings, a factor has
to be entered which is required for conversion to the desired unit of measurement.
Another special feature is that the Upper
measurem. range must be input. Frequencies of up to 30000 Hz can be measured on
channels I and J, consequently a scale from
0 to 30000 is possible in the graphical display. If, for example, you record a speed of
up to 1450 rpm, an awkward Y-axis scale will
result in the graph. If you enter "1500" as the
Upper measurement range for this speed
measurement, for example, the Y-axis in the
graph will be scaled from 0 to 1500 rpm.
In this case the reason for inputting the upper measurement range is just a means of limiting
the scale of the Y-axis in the graphical display. You should set this value as close as possible
to that of the expected measured value in order to get the best possible graphical display.
If there are measured values higher than the upper measurement range, these are not lost.
The scale of the Y-axis can be changed again in the graph at any time later on.
Caution!
The measurement range of the frequency entries is 1 Hz to 30000 Hz. If, for example, the
rpm of a motor is recorded and this motor stops abruptly, the last rpm can still show in the
display for up to 2 seconds, depending on the measurement system, before 0 is displayed.
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HMG 3010 Page 26
Examples of frequency measurements:
1) You would like to measure a frequency up
to 1000 Hz. Frequencies are recorded by the
HMG per minute. Enter "60" as the Factor to
display the frequency in Hz, enter "1000" for
the Upper measurem. range to scale the Yaxis from 0 to 1000 in the graphical display.
2) You would like to measure the speed of a
machine from 0 to 2900 rpm, the speed sensor supplies 2 pulses per revolution. Enter
"2" as the Factor and "3000" as the Upper
measurem. range. The display is then in
revolutions per minute; for the graphical display, the Y-axis is scaled from 0 to 3000.
3) A flow rate measurement transmitter in a
measurement range up to 450 l/min with a
frequency output supplies 8 pulses per litre.
Enter "8" as the Factor and "500" as the Up-
per measurem. range. The display is then in
l/min; for the graphical display, the Y-axis is
scaled from 0 to 500.
Examples of count pulses:
1) The switching output of a proximity switch
on a conveyor belt is connected to the frequency input of the HMG 3010. Enter "1" as
the Factor and the expected maximum
quantity to be counted (maximum 30000) as
the Upper measurem. range.
2) A gear flow meter supplies 250 pulses per
liter. Enter "250" as the Factor and as the
Upper measurement range, the maximum
no. of litres expected (maximum 30000).
Edition 11/2011 - V04 R01 Part No.: 669855
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