HYDAC HMG 3000 User Manual

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PORTABLE DATA RECORDER

HMG 3000

User Manual

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Table of Contents

1 Tasks and Functions of the HMG 3000 .......................................................4

2 About Your HMG 3000..................................................................................7

2.1 Included with the HMG as Supplied......................................................7

2.2 Power Supply........................................................................................7

3 Technical Safety............................................................................................7

3.1 General Safety Precautions..................................................................8

4 Starting the HMG 3000 Up............................................................................9

4.1 Operating Elements ..............................................................................9

4.2 Connectors .........................................................................................10

4.3 Switching the HMG 3000 On ..............................................................11

5 Getting Started Guide.................................................................................13

6 Detailed Operating Instructions.................................................................17

6.1 Settings Menu.....................................................................................17

6.1.1 Changing the Settings of the Measurement Channels ...........17

6.1.2 Changing Display Settings .....................................................27

6.1.3 Zeroing Measurement Channels ............................................29

6.1.4 Changing the Initial Setup ......................................................31

6.1.5 Administer settings (save, load, ...) .......................................33

6.2 Recording Menu .................................................................................35

6.2.1 Starting a Recording ..............................................................35

6.2.2 Viewing Recordings ...............................................................51

6.2.3 Deleting Recordings...............................................................62

6.3 Extras Menu........................................................................................63

6.4 SMART Sensors .................................................................................65

6.4.1 Connecting SMART Sensors .................................................65

6.4.2 SMART Sensors Menu ..........................................................66

6.5 Technical Specifications................................................................................69

7 Cleaning.......................................................................................................70

8 Accessories.................................................................................................71

9 Connection of HMG Components..............................................................73

9.1 Pin assignment....................................................................................74

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1 Tasks and Functions of the HMG 3000

The HMG 3000 portable data recorder is a hand-held unit for simple measurement and data capturing tasks involving hydraulic and pneumatic systems. Applications extend primarily to maintenance and servicing, troubleshooting and test rigs.

The HMG 3000 can concurrently evaluate signals from up to 10 sensors. The unit features input jacks for connecting the sensors; if necessary this number can be doubled using a adapter for measurement operations involving more than 5 sensors. HSI sensors (HYDAC Sensor Interface) are HYDAC sensors for pressure, temperature and flow rate with automatic sensor recognition.

You also have the option of connecting SMART sensors to the HMG 3000. These are the new generation sensors from HYDAC, capable of outputting several different measured variables. These sensors are also automatically recognized by the HMG 3000 via HIS, and the measured values including the measurement unit are shown in the display.

The HMG 3000 can render up to 32 measurement channels.

Depending on the sensor type the sensor features an internal memory providing 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 standard sensors of other manufacturers commercially available can also be used. However, these sensors do not feature any automatic sensor detection, consequently the initial set-up has to be entered by hand.

The HMG 3000 is user-friendly by virtue of its easy-to-access selection menus leading to all of the unit’s functions and settings. The unit features a combination keypad for entering numeric values and text in a fashion similar to that of mobile phones.

The HMG 3000 was designed in particular for capturing typical measurement values (pressure, temperature, volumetric flow rate) in hydraulic and pneumatic systems. A variety of other measurement tasks can be performed by virtue of additional inputs for voltage measurement. 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 volumetric flow measurement using a differential pressure orifice plate.

In addition to the analog measurement inputs, the HMG features two digital outputs, enabling frequencies or speeds to be recorded, thus expanding the unit’s range of potential applications.

When taking measurements of rapid, dynamic machine processes, all 8 analog input signals can be concurrently captured at a rate of 0.5 ms.

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One special feature of the HMG 3000 is its ability to record measurements of the highly dynamic processes in a machine. To this end, two input channels are featured which are capable of recording measured values at a rate of 0.1 ms. It goes without saying that this feature is dependent on the use of suitable, fast-acting sensors.

The most attractive feature offered by the HMG 3000 is its ability to record the dynamic processes of a machine in the form of a measurement curve and render them as a graph — on line and in real time.

The HMG 3000 is equipped with specially developed software providing for fast data collection and processing. A measurement curve can comprise up to 500,000 measured values. The HMG 3000’s measured value memory is capable of storing at least 100 of these measurement curves.

In addition to enabling simple measurement curves to be recorded, the HMG 3000 also features 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 3000 can store user-specific settings (user profiles). The main advantage of this is enabling identical measurements of various

equipment items to be repeated for the purpose of preventive maintenance. All the user has to do is retrieve the respective user profile from the HMG 3000’s memory.

In addition to the analog measurement inputs, the HMG features two digital outputs, enabling frequencies or speeds to be recorded, thus expanding the unit’s range of potential applications. Individual measured values can be displayed in a large format (7-segment format), enabling them to be read at an extended distance.

The HMG 3000 also provides for a variety of user-friendly features for displaying, evaluating and processing measured values:

• Table

• Graph

• Scaling

• Ruler

• Tracker

• Zoom

The HMG 3000 communicates with a computer via a USB or serial port. HYDAC offers

HMGWIN 3000, the matching software for the HMG 3000 which comes standard with the

unit, for convenient post-processing, rendering and evaluation of measurements at your computer. It also enables the HMG 3000 to be operated directly from your computer.

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The HYDAC software CMWIN also comes standard with the unit. This software enables

you to communicate directly from your computer with SMART sensors connected to the HMG 3000.

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2 About Your HMG 3000

2.1 Included with the HMG as Supplied

• HMG 3000

• Power supply providing for 90 – 230 V

• Manual

• CD-ROM containing USB drivers and HMGWIN 3000 and CMWIN

(software for analyzing measurement data and sensor communication) in addition to other product information

• USB connector cable

2.2 Power Supply

The HMG 3000 comes with an internal NiMH battery. To charge the battery, simply connect the power supply furnished with the unit (see connectors of the HMG 3000). The battery is fully charged after ca. 5 hours.

A direct current supply (12 – 30 V DC) can be connected to the power input socket for operating the HMG or charging the battery.

When connecting the power supply to the input socket make sure that +UB is present at the inner contact of the plug and 0 V at the outer contact. A JEITA RC 5320-5 plug, for example, is suitable for this purpose; it is available in most electrical/electronics shops.

3 Technical Safety

The individual components of the HMG 3000 portable data recorder and the assembled unit are subject to strict quality assurance inspection and testing. Each HMG 3000 undergoes outgoing testing. This ensures that when supplied the unit is free from defects and complies with the designated specifications.

The series HMG 3000 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. Any tampering with the data recorder will cause all warranty claims to become null and void.

Compliance with European Standards

The HMG 3000 series portable data recorders feature the CE mark and thus comply with all relevant German regulatory requirements and European standards currently in effect pertaining to the operation of these units. This ensures compliance with currently valid regulations pertaining to electromagnetic compatibility and the provisions of the Low-Voltage Directive (73/23/EEC). This product complies with the provisions of the following European standards: EN 61000-6-1 / 2 / 3 / 4

All technical details are subject to change without notice.

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3.1 General Safety Precautions

The HMG 3000 series Portable Data Recorder can be operated safely provided it is used in accordance with its proper, designated use. Please maintain strict adherence to the following safety guidelines in order to preclude hazards to the user and damage to property and surroundings as the result of improper use:

• The HMG 3000 may not be used unless it is in perfect condition/working order.

• Strict adherence is to be maintained to the usage instructions. Operations involving

adjusting the zero point in particular can lead to dangerous situations. For more

information, please refer to Zeroing of Measurement Channels.

• Heed the specifications on the rating plate.

• Troubleshooting and repair work may only be done by HYDAC’s Service Department.

• Adherence is to be maintained to all relevant generally recognized safety regulations.

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4 Starting the HMG 3000 Up

4.1 Operating Elements

On/Off button

Brightness setting of the display

Esc

For cancelling an entry or going Back

step by step

Shift key

Switches the keypad to a textpad when pressed; the textpad is active only as long as the Shift key is pressed.

Text/numeric keypad

Numbers and letters can be entered via the combination keypad in a fashion 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; To insert special characters: To insert spaces: To delete characters: Line break:

Tip:

SHIFT + OK (simultaneously)

SHIFT + INS (simultaneously)

SHIFT + DEL (simultaneously)

SHIFT + "1" (if necessary, several times for /, %, $ ...)

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 measurement curves

5-way navigation key

To navigate step by step in the display: OK key for inputting, concluding, accepting or

storing an entry

3 4

INS = insert; DEL = delete;

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4.2 Connectors

USB

DC IN

A B C D I I

E F G H J Y adapter

RS232

A - D

4 sensor input jacks for up to 8 analog sensors or up to 4 SMART sensors

(channel A – D and E – H*), e.g. for sensors for measuring pressure,

E - H

temperature or flow rate. The four input jacks can be doubled by plugging in Y adapters.

I / J

1 or 2 input jacks for

-2 digital signals, e.g. for frequency or speed measurements (channel I, J)

-1 voltage input ( - 10 V to + 10 V, channel H*)

DC IN

Female connector for power supply

USB

1 USB connector

RS232

1 serial port

H*: Channel H can be used for sensors with an analog signal as well as for voltage

measurements of -10 V to +10 V.

(for pin assignment, see section 9.)

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4.3 Switching the HMG 3000 On

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 current date and time. Select

the desired format, followed by entering the

current date and time via the keypad. Save your entries via OK, followed by pressing Continue.

The following appears in the display when starting the unit up in normal operation:

• Manufacturer

• Designation of the unit

• HMG version

• Date and time

• Battery charge status

The screen switches to measured value display mode in a few seconds. When sensors are connected you are shown the current

measured values in the Current Measured Values menu (see title bar in display). To skip

through the start-up 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 – (Measurement) Unit

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 via the

navigation key (arrow key) plus the OK key.

Settings — for entering or referring to

setting data used for performing measurements

Recording — for recording a

measurement and graphically rendering measurement data, e.g. as a curve

Note: Generally speaking, functions which can be selected and

executed are blue.

Black means the functions

can’t be selected or executed.

Warnings are shown in red

when incorrect entries are

made.

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Extras — menu featuring the stopwatch,

among other things

plus a function for displaying the Min/Max

values.

Special significance is accorded the

measurement of the Min/Max values, which

is why it is explained in detail below.

Apart from the current measured values, the HMG captures the minimum and maximum values (Min/Max values) too, except when recording a measurement curve. The minimum value is the smallest value to which a measured variable has dropped during the time period under consideration, the maximum value being the largest value achieved by a measured variable during this period. Resetting causes the Min/Max values to be set to the current measured value. This is done jointly for all sensors.

The time period always begins when the Min/Max values are reset. Resetting the values is prompted by the following situations:

• Switching the unit on

• Selecting and activating Reset in the

menu bar

• Connecting or removing an HSI sensor

• Modifying the sensor settings

• While recording an event log

• When concluding 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 3000.

Note: Even if the Min/Max values aren’t shown in the display HMG captures them in the background.

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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 recording a measurement curve (graph of measured values). These 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 3000. Simply follow the steps described here. If you don’t know the status of your HMG 3000 because there might be more than one user in your company using the HMG, you can simply restore

the unit to its condition as supplied (see Administration Settings — Restore factory settings).

Preparation in Advance of 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 Transmitt er s

Integrate the two pressure transmitters hydraulically in your equipment and connect the two pressure transmitters using the sensor connector cables, e.g. to jacks A and B of the HMG 3000.

After the HMG 3000 is switched on it jumps

to the Current Measured Values menu. The

menu bar (function bar) contains various functions providing you direct access to the three main menus:

- Settings - Recording - Extras

and to the display of the Min and Max

values.

Title bar

Function bar

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When HSI sensors featuring 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 current measured values. You can also have the minimum and maximum values for the sensors displayed.

To hide or unhide the Min/Max display, actuate the right arrow of the 5-way

navigation key until Min/Max is highlighted in blue and then press the OK key. This causes

the Min/Max values of the sensors to be

additionally displayed. Pressing the OK key

again causes the Min/Max display to be switched off.

When the Min/Max values are shown, Reset

appears in the function bar, enabling you to reset the Min/Max values as needed. Select them using the arrow keys (blue highlighted)

and then press the OK key: the Min/ Max

values are reset.

The measured values can also be displayed

in a 7-segment pane. To do this, go to

Settings 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 via OK (cf.

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,

followed by confirming via 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 Current Measured Values menu contains the item Recording.

Select it using the 5-way navigation key,

followed by pressing OK. In the Recording menu that follows, select Start recording and confirm via 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 measurement curve with two sensors at channels A and B with a sampling rate of

1 ms and a Recording time of 30 s. Then measurement is to be concluded.

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 causes a drop-down list to open in which you select a sampling rate of 1 ms, followed by confirming via OK. This causes you to automatically proceed to the Recording time line. Press OK. Scroll in the drop-down list using the arrow keys to 30 seconds, followed by confirming via OK.

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In the Recording option line, select End when time has elapsed in the same

manner.

Your screen now shows the settings for recording measured values made by you (cf. screenshot at right). To double-check your

settings, refer to the recorded data selected

by you above the function bar.

Now you can start recording via Start in the function bar + OK. A progress bar shows

you the status of your measurement. The function bar offers you the option of having the measurement curve plotted or the current value shown while recording.

Graphic rendering provides for a faster

visual impression of the changes in the measured values. To have the measurement curve displayed while recording, select

Graph + OK. The screenshot at the right

shows you the curve plotted for our example.

When recording is concluded, you have the option of storing or discarding the measurement. To store the recording, select

Save and confirm via OK. The HMG

automatically assigns a name and a consecutive number, which can be subsequently changed by you as needed. For our example, accept the name

suggested by the HMG and save via 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 Changing the Settings of the Measurement Channels

Select Change settings of measurement channels to obtain a listing of all the

channels 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 setting, the unit of

measurement, and, as applicable, a

designation for the sensor, e.g. "System

pressure".

The various options available for channels A to H are demonstrated here using channel A as an example. Select the

measurement range entry to the right of

the channel using the arrow keys followed

by OK. You now proceed to the menu

window of the channel selected. To enter a

designation, press OK again and then

enter it in the box using the combination

keypad, followed by OK.

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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 featuring automatic

sensor detection. The Manual setting is

used for adapting sensors featuring standard analog signals to the HMG (e.g. 4-20 mA).

However, there are applications in which entering settings by hand is useful, also for HSI sensors. For example, by entering settings manually for a pressure measurement you can have proportional variables, e.g. the ”force”, shown on the HMG.

Manual mode also provides for the following

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.

For Input signal you can choose in the dropdown list between HSI (HYDAC Sensor Interface) and various standard analog

signals (using the arrow keys). To set the

Lower and Upper measurement range,

enter the respective limits via the combination keypad.

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A drop-down list is also provided for

selecting the Unit (of measurement). You also have the option of defining your “other unit” (uppermost 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. Conclude

your entry via 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 3000 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.

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 differential, select the item Pressure differential dP. Then you find an item 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 3000 automatically selects the appropriate curve. If you quit the menu and the HMG 3000 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.

Upon selecting Organise curves, 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 3000 at channel A and channel B. 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.

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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 measurement 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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Input channels I and J are for digital 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 analog 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 the inputting of the

Upper measurem. range. 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 entering 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 measured values exist which are larger 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.

N.B.

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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Examples of frequency measurement:

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 Y-

axis 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 liter.

Enter "8" as the Factor and "500" as the Upper measurem. range.

The display is then in l/min; for the graphical display, the Y-axis is scaled from 0 to 500.

Examples of counter pulses:

1) The switching output of a proximity switch

on a conveyor belt is connected to the frequency input of the HMG 3000. 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 liters expected (maximum 30000). If you

input 30000 as the Upper measurem. range

you can count up to 120 liters.

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If you have selected counter pulses as the input signal, and have returned to the normal measurement value display, you will find on

the far right of the function bar a symbol, as

shown in the screenshot. The counter is

currently stopped. If you select the symbol using the arrow key and confirm with OK, the

counter is reset and will start again. To stop it, select the symbol again using the arrow

keys and confirm again with OK.

In addition to the input channels (channels A to channel J) there are also the virtual

channels Channel K and Channel L

available. These two channels can be used to display a differential between 2 input channels, or to calculate a power.

When setting to Differential the HMG 3000

calculates for channel K the difference between channel A/channel B and for channel L the difference between channel C/channel D. To measure the differential, sensors with the same measurement range, unit (of measurement) and number of decimal places must be used on the input channels. These parameters are then automatically adapted to channel K or L, i.e. no further settings are necessary.

If you would like to measure Power (P*Q),

via channel K, the pressure must be measured at channel A and the flow rate must be measured at channel B. To measure the power via channel L you have to measure the pressure at channel C and the

flow rate at channel D. You can then select kW, PS or hp as the unit (of measurement). Entering the upper measurement range

merely limits the scale of the Y-axis in the graphical display.

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You should set this value as close as possible to the expected power value to get the best possible graphical display. If measured values exist which are larger 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.

This brings you back again to the display shown on the right. In the example, a power is shown at channel K, and the difference at channel L

If you have made an invalid setting, or you have connected 2 sensors with different measurement ranges for the differential, for example, the relevant calculated channel is deactivated. In the example, a pressure transmitter with measurement range of 0-100 bar has been connected to channel C and a pressure transmitter with a measurement range of 0-250 bar has been connected to channel D. Therefore channel L would be automatically deactivated.

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6.1.2 Changing Display Settings

The next submenu of the Change Display Settings item enables you to make settings

affecting the display and rendering of measured values and the display size in keeping with your measurement task. Select the item using the arrow keys, followed by

OK.

When selecting Measured value display, a drop-down list appears

enabling you to choose the rendering speed:

• Fast

• Medium

• Slow

• Delayed

Make your selection, followed by pressing

OK.

Note that the display rendering speed has no impact on the measurement itself. It basically serves to make the display easier to read, e.g. when dealing with pulsation.

For Measured value rendering you can

choose between the measured value table

and various 7-segment display formats (1

display panel, 2 display panels, ..., Set automatically).

When selecting Set automatically, the HMG

automatically searches for the optimal rendering. When two sensors are connected and activated, the display looks like this screenshot.

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The screenshots at the right show the

measured values of four sensors when selecting the 2 display panels rendering

option and activating Min/Max display. Consequently, the display only shows the measured values of two sensors at a time. The arrow keys access the measured values of the other two sensors.

In order to display the measured values of

4 sensors simultaneously, you need to select the 2x2 display panels option (cf.

screenshot).

In the third line of the Display Settings menu there is a Yes/No option next to Show progress bar. Yes causes the progress bar

to be shown in the measured value display. The appearance of the display may vary according to what settings have been made for rendering the measured values.

The overall width of the respective progress bar corresponds to 0% – 100% of the measurement range. The progress bar shows the position of the current measured value in the overall measurement range. Showing the Min/Max values causes the display to be altered. The current measured value is now shown by a dot and the length of the progress bar shows the range from

Min to Max. No causes the progress bar to

be switched off.

( ↑ ) and ( ↓ ) enable you to

Back takes you back to the Settings menu.

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6.1.3 Zeroing Measurement Channels

You can rezero the measurement channels

in the Settings menu. This function is used

to mask out backpressure buildups present in the system. For example, if a pressure of 3 bar is present at a pressure transmitter despite the facility having been switched off, this value can be used as the new zero point for display purposes.

Rezeroing can be done at any point throughout the measurement range of a measurement channel.

In the Settings menu, select Zero measurement channels, and then confirm via OK. The screen at the right appears. You

are now prompted to select a measurement channel. Select the channel which you would like to zero using the arrow keys, and then

confirm via OK. Then select Set followed by OK — you have zeroed the channel. You

can delete the changed zero point via

Delete.

All measurement channels which have been rezeroed are indicated by an arrow in front of their designation for safety reasons (see screenshot).

Warning!

A high pressure may still be present in a measurement channel marked by an arrow even though the pressure reading shows 0 bar. When removing a sensor or other system components make sure the system

has been depressurized first. Failure to do this may pose a hazard to life and limb.

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Switching the HMG unit or measurement channels OFF/ON doesn't automatically cause the newly set zero point to be deleted. The following message is shown when switching the HMG off and then back on:

"Some channels have a zero offset." Press OK to retain the zero offset or Esc to delete it.

To determine the extent of a zero offset

which has been set, go to the Settings menu and select Zero measurement channels.

You are shown a list of all the channels which are active. Channels with a zero point

adjustment are checkmarked. The value of the zero offset is shown at the right.

Any zero offset is also shown in the measurement channel list by way of a small arrow in front of the measurement range. To

find it, go to the Settings menu, then

Change Settings of Measurement Channel.

There is one exception where the zero offset is automatically deleted. This happens when a sensor is connected to the channel and the sensor has a measurement range differing from the one for which the zero offset was set. This means that the zero offset is not retained unless the lower and upper measurement limit, the number of decimal places, and the unit of measurement of the newly connected sensor are identical.

When the zero offset is automatically deleted, a message to this effect appears in the display for two seconds.

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6.1.4 Changing the Initial Setup

The Change initial setup item is a submenu of the Settings menu.

To make changes to the initial setup, press

OK. You can now change the following

items:

Language

You can choose between German, English and French. Select your language using the

arrow keys, followed by OK.

Setting/Correcting the Date and Time

Various format options are offered depending on the language selected by you and the associated regional formatting applicable to the date and time. Make your

selection, followed by pressing OK. Then

enter the current date and time via the

numerical keypad and save your entries via OK.

Automatic Measurement Units

This subitem refers only to HSI sensors with automatic sensor detection. When the sensors are connected, the unit of measurement of the sensor is read out and automatically taken over.

If, for example, you want all pressure transmitters featuring automatic sensor detection to show psi readings, you can make this setting here. For a connected 0 – 100 bar pressure transmitter, the HMG then shows the measured values in a measurement range of 0 – 1450 psi, i.e. the measurement range and the unit of measurement are automatically converted.

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Note: Automatic conversion of measured values to the selected unit of measurement doesn't work unless

(HSI)

mode is selected under Settings –

Measurement Channel Settings.

Select the unit of measurement to be

changed, followed by OK. Select the new

unit of measurement desired from the drop-

down list via OK.

In the list of measurement channels, the measurement range for this channel is now shown in 0 – 1450 psi instead of in 0 – 100 bar, for example.

In the current measured values display the

measured values show psi readings (listed after the channel or sensor designation).

PC Link

The HMGWIN 3000 and CMWIN software

enables you to make online measurements and settings in the HMG 3000, in addition to further processing, archiving, documenting and updating them. Data transfer generally takes place via the USB port.

You can also transfer data to the PC via the HMG's serial port. To do this, select the

RS232(COM) setting along with the requisite

baud rate.

Automatic detection

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6.1.5 Administer settings (save, load, ...)

All of the measurement channel settings made by you in the HMG for the last measurement can be saved and then reloaded later on for the purpose of periodically repeating the same measurement, for example.

You can also delete individual stored settings or restore the factory settings.

Select Administer settings (save, load, ...), press OK, and now proceed to the Administer Settings menu with its four

submenus (see screenshot).

When you confirm Save current settings via OK, you see the name of the setting saved last, or No Name if nothing was saved. Confirm via OK, and you are shown a

list of all the saved settings and the option of

entering a new name. Select New Name and

enter a name using the combination keypad.

Save the new name (2 x OK) and you are returned to the Administer Settings menu.

The HMG automatically assigns a consecutive number, which can be subsequently changed by you as needed. The HMG automatically assigns the next higher unused consecutive number, which is always unique. Any gaps in the list of numbers are not filled.

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In the submenus Load stored settings or Delete stored Settings, you are shown a list

of all the saved settings from which you can

Load or Delete individual settings.

Navigate to a setting using the arrow keys

and confirm via OK. The item "activated" in

the function bar jumps, enabling you to

accordingly Load or Delete the setting.

You can restore your HMG to the original setup present when delivered by selecting

Restore factory settings.

Confirm Restore factory settings via OK

and the menu following offers you two

options. Select one of them followed by OK and execute the option via the Execute

command in the function bar.

Caution Restoring the factory settings causes all of the stored settings and recordings to be

deleted; the Welcome startup screen

appears, similar to when turning the unit on for the first time.

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6.2 Recording Menu

Here the HMG enables you to perform a measurement for a specific period of time and save it. This recording can be rendered as a graph or a table. To do this, proceed as follows: To access the recording menu, go to

the Current Measured Values menu, then select Recording in the function bar at the bottom. In the Recording menu that follows, select Start recording, View recording or

Delete recordings, and confirm via OK.

6.2.1 Starting a Recording

When selecting Start recording, you

proceed to the menu in which the individual measurement parameters which can be set for making a recording are listed. When

selecting the first item, Recording, a drop-

down list appears in which you can choose

between Simple measurement curve,

Measurement curve with trigger or Event log. Select a recording option followed by OK.

When selecting Simple measurement curve, you can make additional parameter

settings:

Measurement channels

The active measurement channels are

shown here. Confirm via OK. You now

proceed to the

Measurement Channels

settings you can make here are described

in detail in the Changing the Settings of

the Measurement Channels section of Settings Menu. Before starting your

recording you can now decide whether you want to switch off individual channels (X = "off").

Change Settings of

menu. All of the

Important: Don't forget to reactivate the

measurement channels after completing your measurement, assuming they are still needed.

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Sampling rate

This item enables you to set the rate at which the HMG reads a measured value from the sensors and stores it in the internal memory. A measurement curve may comprise up to 500,000 measured values. Selecting 1 ms, for example, means that 1000 measured values per second are taken and stored for each connected measurement channel.

Use the arrow keys ( ↑ ) and ( ↓ ) to scroll

through the various settings for the sampling rate. At the bottom of the display you see information on the resulting recorded data (number of data records and memory usage). If you select an invalid setting, meaning that the sampling rate selected by you would exceed the 500,000 maximum, you are shown a message in lieu of the recorded data describing the invalid setting made by you.

The sampling rate selected depends primarily on the measurement task at hand. A sampling rate of 1 s is probably sufficient for monitoring the temperature in a hydraulic tank, as temperature changes generally progress slowly. If, however, you want to track extremely rapid system-induced pressure surges, whose occurrence frequency is generally in the millisecond range, you have to work with a sampling rate of 1 ms or less.

HYDAC HSI pressure transmitters with automatic sensor detection are capable of tracking rectangular pressure pulses (theoretically occurring in a time of 0 s) within 0.5 ms apart. This means that simply setting a sampling rate of 0.1 ms is not sufficient to capture pressure surges occurring faster than 0.5 ms apart. A suitable dynamic pressure transmitter also has to be used.

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The sampling rate which can be set is also dependent on the active measurement channels:

• 0.1 ms max. 2 analog input

channels

• 0.2 ms max. 4 analog input

channels

• 0.5 ms all 10 input channels

• 1.0 ms for SMART sensors

Recording time

A drop-down list appears when this item is selected. Using the arrow keys (↑) and (↓) you can select a recording time of between 1 second and 24 hours, followed by pressing

OK.

When changing the setting, information is shown at the bottom of the display pertaining to the recorded data showing you the result of your setting.

Recording option The options available here are End when

time has elapsed and Record continuously until terminated.

End when time has elapsed means that

recording is discontinued when the time

entered in Recording time has elapsed.

Record continuously until terminated

causes the oldest measured values to be deleted when new measured values are

added upon the time entered in Recording

time elapsing. The time entered in Recording time remains as the "past" in

relation to the current time in the measured value memory until the Stop command is

given (Stop + OK or actuate the Esc key).

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Example of Recording a Simple

Measurement Curve

The settings made for the example shown at the right mean that the measured values of channels A and B are captured with a sampling rate of 1 ms (i.e. 1000 measured

values per second, referred to as data records (recorded data)), and that recording

is automatically discontinued after 10 seconds. You see the following brief

summary under Recorded data:

10,000 records each consisting of 2 values (1 x channel A, 1 x channel B), memory usage: 40 kB.

Now you can Start or Cancel (also Esc) the

recording in the function bar. The following appears in the display (cf. right) after starting a recording: you see a list showing the start time, date & time, the time elapsed, and the number of data records recorded. A

progress bar shows you the status of your

recording. The function bar offers you the option of having the measurement curve plotted (graph) or the current measured values

displayed. Graphic rendering provides for a

faster visual impression of the changes in the measured values. To have the measurement curve plotted while recording,

select Graph + OK. The screenshot at the

right shows you what the plotted measurement curve might look like.

Note

When plotting a measurement curve, capturing of the Min/Max values is switched off as all the measured values are rendered in the curve during this time.

Recording can be discontinued at any time

by selecting Stop or pressing the Esc key.

When recording is concluded, you have the

option of storing (Save) or discarding (Discard) the measurement.

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Before doing this, you can have the measurement shown again as a curve

(Graph + OK) or as a measured value table (Table + OK).

When doing this, other tools are offered for analyzing the chart or table. For more information on how you can retrieve recordings and view them as a curve or

table, please refer to Viewing Recordings.

Back/Esc enables you to return to the Simple Measurement Curve Recording – Status screen.

To store the recording, select Save and confirm via OK. The HMG automatically

assigns a name and a consecutive number, both of which can be subsequently changed

by you as needed. Select a item + OK and

make your entries using the combination keypad.

The Comment item enables you to enter a

text, e.g. a description indicating the operational status of the unit or facility while the recording was being made.

To store your event log, select Save and confirm via OK. The HMG saves the

measurement settings together with each recording so that a detailed measurement log is created.

The following generally applies:

Each measurement is given a number.

The HMG automatically assigns the next higher unused consecutive number, which is always unique. Any gaps in the list of numbers are not filled.

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Measurement Curve with Trigger

Measurement curve with trigger is another

recording option. "Trigger" means that a measurement curve can be started automatically when one or more specific events occur. Events can be a limit being exceeded or fallen short of or a measurement window being departed from.

When selecting Measurement curve with trigger, you see other parameters which can

be set in addition to the setting parameters

available for Simple measurement curve (Measurement channels, Sampling rate, and Recording time). The additional setting parameters are: Trigger settings, Pre/post trigger and Automatic measurement.

Select Trigger setting + OK. In the menu

which follows you can specify up to 4 trigger events (event 1 to 4). To activate an event,

select the respective box by pressing OK so

that a checkmark appears. The event used last is shown next to the box. (What appears in the display varies according to the event used last.) Use the arrow keys to navigate to the right to the event box, and confirm via

OK.

In Trigger event ..., confirm via OK. The

following list of trigger events is displayed:

• Actuation of button/key

• External signal change

• Specific value

• Leaving measurement window

• Timed

Select the appropriate option for your measurement task.

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Event: Actuation of button/key

The simplest event is actuating a button or key to trigger a measured value recording. After starting the recording, you can trigger

measurement by selecting Trigger in the function bar (+ OK).

Event: External signal change

An external signal change means that you apply a direct current signal to one of the

frequency inputs (I or J), e.g. via a button (NC or NO contact). A measurement can

then be started when the voltage is switched

on via an NO contact (rising signal edge) or NC contact (falling signal edge).

In the settings menu (cf. screenshot), you

specify the trigger input under Input. Only the two digital inputs I and J are available here. Next you set the Slope to rising or

falling and confirm via OK.

Event: Specific value

Use the trigger event Specific value to

locate pressure peaks or pressure troughs in a machine. Pressure peaks always occur in a rising direction (measured value increases), whereas pressure troughs occur in a falling direction (measured value drops). First determine the measurement channel for which you wish to set the trigger, then enter the measured value (via the numerical keypad) at which you want to trigger a

recording. Finally, select the direction (From below or From above).

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Event: Leaving measurement window

This trigger event is very similar to Specific value. You can specify a Lower Limit and

an Upper Limit. The trigger is activated

when the measured value enters the measurement window. However, recording is not started until the measured value leaves the measurement window in a rising or falling direction.

Event: Timed

The event setting using a time function ("timed") is useful for measurements which are to be repeated at specific intervals. In the Settings menu you can specify the number

of Repetitions (max. 30,000), the Interval and the starting time. In the Start item you

can specify whether this event is to be

activated immediately (Start immediately) or not until after a certain Start date and Start time.

In the Event: Timed example shown at the

right, a measurement is started 10 times, every 30 minutes. The trigger becomes active for the first time on 21 June 2005 at 14:20.

Up to 4 events can be specified for recording triggered measurements. After making each

of the settings, return to the Trigger Settings menu via Back. The menu now

provides an overview of all the events and settings entered by you.

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Linking Events

You also have the option of linking events. Without linking, each of the four events acts alone and independently as a trigger for a measurement recording.

In the line Joint events (options shown to

the right) a drop-down list opens containing the linked event options. In the example, the

linking of Events 1 and 2 (shown at the left

by a circuit diagram symbol) means that recording is EITHER triggered by the simultaneous occurrence of events 1 and 2 (the measured value in channel A drops to 5.00 bar, with the measured value in channel B leaving the window of 4.00 to 6.00 bar at the same time) OR a voltage signal (falling signal edge) is detected at trigger input J, OR a key or button is actuated.

Other event linking options are shown in the drop-down list. It should be borne in mind that events are always listed in descending order, otherwise you have to resort the events.

In the 1 and 2 and 3 and 4 option, all events

have to occur simultaneously in order for a recording to be triggered. By contrast, the

(1 & 2) or (3 & 4) option (last line in the

drop-down list) provides for three variants:

A triggered recording is initiated when

a) 1 and 2 coincide or

b) 3 and 4 coincide or

c) all, i.e. 1 and 2 and 3 and 4, occur

simultaneously.

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The next setting parameter for recording a

triggered measurement curve is Pre/post trigger. After starting a triggered

measurement curve the HMG begins to record the measured values for the recording time set (e.g. 30 seconds). If the trigger event does not occur during this time, the oldest measured values are replaced with new measured values in the measured value memory. This means that you always have the set recording time as the "past" in the measured value memory.

The Pre/post trigger option enables you to

specify how much of this "past" is to remain in memory when the event occurs and how much "future" you would like to record after the event.

A Pre/post trigger setting of 50 / 50%

means that for a recording time of 30 s the "oldest 15 s" are discarded, 15 s remain before the occurrence of the event, and recording is done for another 15 s after the trigger event occurs.

Finally, the Automatic measurement option

enables you to select whether you only want to perform one measurement (setting:

Automatic measurement — Deactivated)

or whether another measurement curve using the same settings is to be recorded

(Automatic measurement — Activated). For a Simple triggered measurement, select the Deactivated automatic

measurement option.

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Example of an Automatically Triggered Measurement

The following occur in a hydraulic press from time to time: defective components, ruptured hoses or cracked cylinders. You suspect there may be extremely high pressure peaking in three hydraulic circuits and want to monitor the press for pressure surges for an extended period of time.

To do this, you make the following settings:

• Recording: Measurement curve

with trigger

• Channels: A, B, C

• Sampling rate: 1 ms

• Recording time: 30 seconds

Trigger settings:

• Event 1: channel A increases to 180 bar

• Event 2: channel B increases to 230 bar

• Event 3: channel C increases to 280 bar

(These are pressures which are 50 bar higher than may occur normally.)

• Pre/post trigger: 80 / 20%

(You select this option because you are interested in knowing what happened in the other pressure circuits before the trigger was actuated and you want to record the pressure curve somewhat longer after the trigger event.)

• Automatic measurement: Activated

When actuating Start (+ OK) in the function

bar, in the next screen you are prompted for a name and number for the measurement. The measurement is then stored under this name with a consecutive number after every trigger event. You also have the option of entering a comment, e.g. the operating condition of the machine.

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As soon as you confirm saving via OK,

measurement is activated, resulting in the

screen shown at the left. Selecting Graph

causes a measurement curve to be plotted and displayed (cf. top screenshot), selecting

Measured values causes you to proceed to

the normal measured values screen (cf. bottom screenshot). If you like, you can

switch back and forth between the Status, Graph and Measured values screens.

You can manually discontinue the recording currently in progress at any time by selecting

Stop. This causes the measurement to be

cancelled and a new measurement to be automatically activated. To discontinue

automatic measurement, select Autostop followed by OK.

After concluding automatic measurement the result obtained is a series of measurements,

which can be viewed as a list via View

recording. To do this, select View recording in the Recording menu; you are

now shown all of the measurement curves just recorded. Select one of the recordings using the arrow keys. A short overview of the recorded data appears above the function bar for the recording selected.

You can have the recording displayed as a graph or a table via the respective command options in the function bar. For more details

on this, please refer to Viewing Recordings.

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Event Log

The Event Log option enables you to store

measured values as a table. A line in the table contains the current measured value, in addition to the Min and Max value of each active channel. The trigger settings enable you to specify which event is to create a new line in the event log once the measurement

has been started (e.g. Actuation of button/key, Specific value). As soon as a

new measured value line is saved, the Min and Max values are always automatically reset.

Similar to the Measurement curve with trigger recording option, in automatic

measurement you can also choose whether you would like to make just one recording or whether an event log is to be recorded again afterwards using the same settings.

Example of an Event Log

Quality assurance of a stamping operation is to be gauged by monitoring the stamping machine for two hours. Proper stamping requires a die closing pressure of between 127 bar and 132 bar. In this case, only the maximum pressure value in each cycle is of interest. Measurement is done using a pressure transmitter at channel A.

To make the recording, proceed as follows:

• Start recording menu, Recording item:

select Event log.

• For our example, activate only

channel A.

• Trigger settings: select

event 1, channel A, measured value:

5 bar, and Measured value falls.

Specific value for

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• In order to also manually generate a

measured value line, set a second event

to Actuation of button/key.

• Automatic measurement: Deactivated

Upon starting measurement, a new menu

window Event Log Recording — Status

opens, enabling you to track the measurement on the basis of the settings. Data is recorded only when an event occurs.

The sampling rate for the event log is automatically determined by the HMG in keeping with the number of active measurement channels:

• 0.1 ms max. 2 analog input channels

• 0.2 ms max. 4 analog input channels

• 0.5 ms all 10 input channels

For the above example this means that the stamping press is switched on, the pressure reaches 131 bar and drops back to 0 bar. When reaching 5 bar in the falling direction, a measured value line is generated and the Min/Max values are reset. The last Max value is retained in the measured value line. A closing pressure of 129 bar is reached in the next cycle. This value is also written to a new line upon the pressure dropping to 5 bar.

The function bar offers you the option of having the current measured values

displayed (Measured Values) or a Table

shown.

Table causes the data records of each individual event to be listed line by line.

Apart from the date and time of the respective recording, the trigger event and the Min and Max values for the active

sensors are shown. The most recent data record is shown in the lowermost line of

the table.

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Using the arrow keys of the 5-way navkey, you can select the arrows next to the scroll

bar. After confirming via OK, you can scroll

in the table up/down and left/right. A single arrow means scrolling line by line, a double arrow means screen by screen, and means "jump to the beginning or end of the table".

You can discontinue recording the event log via Stop in the function bar. In the menu

following you are shown an overview of the

event log and are prompted to Save your recording or Discard it (function bar).

Before doing this, you can have the measurement shown again as a curve

(Graph + OK) or table (Table + OK). Other

tools are also available. For more information, please refer to the next section

Viewing Recordings. It provides a detailed

description of the options available and how to use the tools and other features for analyzing each saved recording, whether as a table or a graph.

To store your event log, select Save and confirm via OK. The HMG automatically

assigns a name and a consecutive number, both of which can be subsequently changed by you as needed. Select the appropriate

menu item and confirm with OK, and make

your entries using the combination keypad.

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The Comment item enables you to enter a

text, e.g. a description indicating the operational status of the unit or facility while the recording was being made. The HMG saves the measurement settings together with each recording so that a detailed measurement log is created.

Note:

For the same example, if you select automatic measurement Activated and start the measurement with Start, you are asked to allocate a Name and a Number to the

measurement. The measurement is then stored under this name with the next consecutive

number. In the function bar on the screen you also see the Autostop function. The measurement currently running can be discontinued by selecting Stop. This causes the

measurement to be saved and a new measurement to start automatically. To discontinue

automatic measurement, select Autostop followed by OK. The measurement that was just running is resumed and can be ended again by selecting Stop.

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6.2.2 Viewing Recordings

The View recording item in the Recording

menu causes a list of the recordings stored in the HMG to be displayed. Use the arrow keys to select the measurement you wish to view. The selected recording is indicated by an arrowhead and is blue-highlighted. The associated recorded data appears above the function bar.

Before selecting a measurement, this list can be sorted according to

• Name

• Number

• Recording started

and in ascending (↑) or descending order (↓) in each case.

Hit Esc to change from the selection list into

the menu the next level up. The arrow key (

↑) enables you to access the header row.

The list can be accordingly sorted by

pressing OK. To do this, select Name, Number or Recording started in the header

row. To sort in ascending or descending

order, click in the respective column header via OK (pressing OK more than once causes

sorting to be done in the reverse order). An arrow next to the column header indicates whether sorting is in ascending (↑) or descending (↓) order. To return to the

selection list, press (↓) + OK.

In the list of the stored recordings, select a

measurement followed by OK. You are now in the function bar and can now decide

whether you want to view the measurement

as a Graph or a Table. This applies to

measurement curves and

event logs.

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Graph

A measurement can also be rendered as a measurement curve. To do this, select

Graph + OK in the function bar. The

screenshot at the right shows what appears next in your display. The measurement is

scaled throughout the entire time range (x-axis) and measurement range (y-axis).

Above the y-axis you can see which channel is currently scaled along the y-axis.

If you have recorded the measurement using

more than channel, you can select the channel or sensor to be rendered in the y-axis. Press Arrow Up (↑) followed by OK to change the scaling of the y-axis to

another channel activated for display. This causes a drop-down box to open, in which all channels are listed. Select one followed by

OK to specify y-axis display. (The axis

rendering then also takes on the colour of the associated measurement curve, cf.

below.) Use Arrow Right (→) to change the scaling for the x-axis.

Generally speaking, the x-axis is the time axis. A measurement channel can be

assigned to the x-axis to render the

performance curve of a pump (P-Q diagram). In the example shown at the right,

rendering as a P-T diagram has been

selected for the control line and reservoir curves.

The following options are available to you in

the function bar of the Graph menu:

Back, Automatic, Navigate, Magnifier, Ruler, Tracker, Undo, Display all, Settings

and Info.

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Back Back/Esc enables you to return to the

previous menu.

Automatic: Automatic causes all individual curves to be

optimally rendered "automatically". When

selecting Automatic (+ OK) the y-scaling is

automatically adapted for each active channel separately, i.e. the y-scaling is zoomed to its maximum size.

Navigate: Navigate is used for the quick precision-

evaluation of a measurement curve or rendering of parts thereof. It enables the

size of the curve to be changed or the measurement curve to be shifted, causing

details to be rendered more accurately so that they can be examined more easily.

When selecting Navigate you are shown

information in the function bar about the activities possible here including graphical tips for using them.

Use the arrow keys of the 5-way navkey to shift the curve or the section of the curve in

the direction of the arrow.

If you also press the Shift key (↑) and keep

it pressed, you can additionally change the size of the rendering.

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Use the ► and ▲ arrow keys while holding

the Shift key down to enlarge a portion of

the measurement in the x- or y-axis.

Use the ◄ and ▼ arrow keys while holding

the Shift key down to decrease or "squash"

the curve in the x- or y-axis. (cf. screenshot)

Magnifier:

To explore a section of the curve and zoom

it, use the Magnifier (+ OK). The function

bar contains similar functions for shifting and resizing as the Navigate feature does (see previous page).

A frame, or zoom window, appears in the

middle of the graph. The position and size of the magnifier can be changed using the 5- way navkey and the Shift key (↑).

Use the arrow keys ◄ & ► and ▼ & ▲ to shift the zoom window to any place in the graph. To resize the zoom window in

addition to shifting it using the arrow keys,

hold the Shift key (↑) down.

When the magnifier is set and positioned in

the zooming section, OK activates the zoom

and the selected area is enlarged.

You also have the option of zooming several times in several steps, with the rendering being further enlarged each time.

Shift: use arrow keys Decrease/Increase:

Shift key + arrow keys

Zoom rendering of graph

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Ruler:

When the Ruler is activated, the screen

takes on an appearance as shown in the screenshot. The function bar contains the commands which can be accessed for the ruler.

Using the arrow keys by themselves enables you to determine the pressure at a particular point in time. If you move the ruler using the arrow keys parallel to the x- and y-axis to a specific measurement point in the curve, the associated x- and y-values are shown along the axis, colour-highlighted with the colour of the measurement curve.

To measure a pressure pulse in time and amplitude, for example, use the Differential

function. Proceed as follows:

First shift the x- and

y-ruler to the starting

point of the pressure pulse using the arrow

keys. Then press the Shift key in addition to

the arrow keys and keep it pressed. As soon as you actuate one of the arrow keys, a second x- and y-ruler appears, which you can move to the end point of the pressure pulse using the arrow keys (continue to

depress the Shift key).

Now you can release the Shift key. The value of the pressure differential is shown relative to the starting value along the y-axis; the duration of the pressure pulse (now colour-highlighted) is shown along the x-axis.

To exit the Ruler, press Esc.

Determining measurement values

Determining differential values

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Tracker:

Using the Tracker is similar to using the

ruler. The difference is that each value

actually measured is rendered by a point.

Only a ruler appears for "processing" the curve through time. The tracker "jumps" from one measurement point to the next,

with the respective measured value of each

measurement channel shown along the y-axis to this point x in time (x-axis).

Here, too, the differential between a selected starting and end point of a particular curve section (e.g. of a pressure pulse) can be rendered and measured.

To exit the Tracker, press Esc.

Undo: Undo enables you to undo any changes

(e.g. Automatic, Navigate, Magnifier) you

have made, step by step.

Performing measurements using the tracker

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Display all: Display all causes the recording throughout

the entire recording period to be rendered with all the measured values. This option is used to restore the point of departure of a

recording. Display All + OK causes the

measurement throughout the entire time period to be restored along with the complete measurement range scaling if the ranges had been previously limited.

Settings: Settings causes the measurement channels

to be shown which have been used to make the recording. The channel rendered along the y-axis in the measurement curve is additionally labelled with "(Y)".

For rendering as a graph you can activate or deactivate a channel by checking or unchecking the box in front of it using the

arrow keys + OK (checkmarked means that

the channel will be shown). This enables you to specify whether all measurement channels are to be shown, or only one or two at a time. This feature enables you to keep track when several measurement channels are used (cf. example at left: "Tank" is deactivated).

For curve rendering, there are additional settings apart from which channels or sensors are to be shown (on/off), e.g.

• Upper and lower limit

• Colouring and rendering of curves and

values

• Time range

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In the list of channels, select a channel to

the right next to the box, and confirm via OK.

In the next menu you see an overview of the

measurement range, current scaling (upper and lower limit) of the y-axis, line style and colour in which the measured

values of this sensor is shown. You can reset all the parameter settings except for the measurement range.

The default scaling (upper and lower limit)

can be manually changed here via the keypad. This is one of the various options offered by the HMG 3000 to enlarge interesting parts of graphs so they can be

explored. After confirming the Lower limit line via OK, you can change the value.

Conclude your entry via OK. You are now in

the next line. Follow the same steps here to specify another upper limit, if necessary.

For Line style a drop-down list appears offering you a choice of Solid line, Dotted line, and Dotted and solid. Make your selection, followed by confirming via OK.

Colour: use the arrow keys to select various

colours from a list (followed by confirming via

OK). This enables the rendering of every

channel to be adapted according to your preferences.

Back takes you back to the list containing the measurement channels. The Time range is shown above the function bar; it

can also be adapted manually as needed. Select a value and enter another time period of interest to you via the keypad (+

OK).

After selecting Graph in the function bar, press OK to return back to the graph.

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Entering the following new settings for

"Sensor measurement 3(1)" would result

in the curve shown at the right:

Scaling (lower and upper limit) of y-axis:

0 - 100 bar – Control line

Time range of x-axis:

3.00 – 5.00 s – Time

Info:

The last item Info in the graph screen is

used to view and modify comments entered by you (comments are entered using the combination keypad). You can also have the recording data for a measurement displayed.

To exit the Info menu, use Back.

The exit the graph, use Back or Esc.

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Table

Tables are useful for displaying individual

measured values. Select Table (+ OK) in the

function bar to select a stored recording shown and have its values displayed.

For a simple measurement curve recording you are shown a measured values table listing the measured values of the active channels in columns and the associated recording time in rows. No Min/Max values are shown here as they are not captured while recording the measurement curve.

If, however, you select the measurement of an event log, the measured values table looks like this:

A complete data record is shown per row for each event. Each individual data record consists of the date, time, trigger event and the associated measured values of the individual channels including the Min and

Max values. The data record of the event

recorded last is contained in the lowermost line of the table.

When more than one channel is used, the tables of measurements in general, and event logs in particular, feature a series of columns and rows which don't become visible until the respective scroll bar is moved. Use the arrow keys of the 5-way navkey to select the arrows next to the

scroll bar. After confirming via OK, you can

scroll in the table up/down and left/right. A single arrow means scrolling line by line or column by column, a double arrow means screen by screen, and means "jump to the beginning or end of the table".

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The date and Min/Max values can be hidden so as to make tables easier to read. You can

hide and unhide Min/Max and the Date via OK.

You can also hide and unhide individual channels for display in the table using the

Settings function (a checkmark means that

the channel is displayed; hide/unhide via

OK). You can also jump to a specific place in

the table via the date and time setting in the column next to the beginning of the table.

Select via OK, enter the desired time using

the combination keypad, and conclude via

OK. Table takes you back to table display.

Info is used to view and modify comments

entered by you (make your entries using the combination keypad). It also enables you to display the recorded data for a

measurement. To exit the Info menu, use Back.

To exit the table view of a recording, use

Back or Esc. You are now back in the

selection list of stored recordings. To exit it,

press OK or Esc.

To exit the View Recording menu, use Cancel or Esc.

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6.2.3 Deleting Recordings

Any recording can be deleted when no

longer needed. To do this, select Delete recording in the Recording menu + OK:

you are now shown a list of all the stored recordings. Now select the recording to be deleted. A small arrowhead to the left of the file name shows you what you have selected.

Before selecting a recording, you can sort the list by

• Name

• Number

• Recording started

and in ascending (↑) or descending order (↓) in each case.

Hit Esc to change from the recording list into

the menu the next level up. The arrow key

(↑) enables you to access the header row. Press OK to sort the list according to Name, Number or Recording started. To do this, select Name, Number or Recording started

in the header row using the arrow keys. To sort in ascending or descending order, click

in the respective column header via OK (pressing OK more than once causes sorting

to be done in the reverse order). An arrow next to the column header indicates whether sorting is in ascending ( order. To return to the selection list, press

(↓) + OK. Select the measurement to be deleted and confirm via OK. Several

recordings can be selected in one go by

simultaneously pressing the Shift key. Confirm via OK, you now have access to the Delete function. Hit OK again and the

selected recordings are deleted.

Note: You are not prompted to confirm the delete operation.

↑) or descending (↓)

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6.3 Extras Menu

The following options are available to you in

the function bar of the Extras menu:

• Stopwatch

The stopwatch offers you the following

functions: Start, Stop, Interim reading and Reset.

• About HMG 3000

• SMART sensors

• Update Instrument Software.

(only after downloading new firmware)

Stopwatch

To stop the time needed by you to troubleshoot an error (locate it), start the

stopwatch. Use Back or Esc to switch back

to normal measurement mode. The stopwatch continues to run in the background. As soon as you have completed

troubleshooting, call the Stopwatch menu again and stop it using the Stop command. Use Reset to set the stopwatch back to zero.

About HMG 3000

The About HMG 3000 menu provides an overview of current power supply, how

much memory is currently used, when the Min and Max values were reset last, and the address of HYDAC ELECTRONIC.

SMART Sensors

The SMART Sensors item is described in

detail below.

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Update Instrument Software

If a firmware update has been transferred to your HMG 3000 via the HMGWIN 3000

software, you will still see the Update Instrument Software item in the Extras menu. This

means that an update is present which you can now activate in the HMG 3000.

CAUTION:

All data stored in the HMG 3000 (measurements, settings, ...) is deleted when the update is imported. Back up this data to a PC using HMGWIN 3000 before starting the update. Connect the power supply to the HMG 3000 to ensure a secure voltage supply during the update.

To activate the update, select Update Instrument Software and then Start + OK. Once the

update has been carried out, the HMG 3000 automatically switches off. After the unit is restarted again you can continue working.

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6.4 SMART Sensors

These are the new generation sensors from HYDAC, capable of outputting several different measured variables. Depending on the sensor type, these variables are stored for an extended period in the unit's internal memory. Regardless of the sensor used, its parameters can be set.

CAUTION: To connect SMART-Sensors to HMG 3000 see “Connection requirements” and

“Wiring diagrams” in each sensor user manual.

The following details are in reference to the SMART sensor HYDACLab they could also be used to describe any of the other sensors.

The measured value display of SMART sensors is shown in the screenshot at the right (example: HLB 1000). The display settings and measured value renderings can be changed as described in section 6.1.2 above. Since every SMART sensor goes through an initialization phase until the current measured values are displayed, we recommend resetting the Min and Max values after this phase has completed.

6.4.1 Connecting SMART Sensors

HLB 1000, however

To connect SMART sensors with the

HMG 3000, select the SMART Sensors item in the Extras menu.

Then enter the connector to which the

SMART sensor is connected. You also have the option of entering a

sensor bus address. The default setting is No address.

Bus addresses have to be specified when the SMART sensor is operated in a bus

system. (This function is not described further here).

After selecting Connect you see some

information about the connected SMART sensor above the function bar. Click on

Continue to access the options menu of

the SMART sensor.

Disconnect enables you to discontinue

the connection to the SMART sensor.

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6.4.2 SMART Sensors Menu

You are now in the SMART Sensors

menu and can enter settings to adapt the sensor to your requirements. The items contained in the menu vary in accordance with the sensor type connected, meaning not all of the menu items described below may be available.

6.4.2.1 Sensor Information

This menu provides the following information about the connected SMART sensor:

• Stock number

• Serial number

• Information about the various

measurement channels with regard to their type and measurement range.

6.4.2.2 Sensor Values

The current measured values along with the associated units of measurement of the connected SMART sensor are shown here. If the SMART sensor internally captures Min/Max values, they are also shown; if not, a dotted line is shown.

6.4.2.3 Sensor Recordings

In this menu you can transfer long-term recordings created by the SMART sensor to the HMG 3000, or delete them from the SMART sensor's memory.

Refresh enables you to check whether

new recordings are present.

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After selecting a recording and the

Transfer option, you see the following

screen: Now you can determine whether the selected recording is to be stored in the HMG 3000 under the combination of name+number, or whether you would like to assign a new designation.

6.4.2.4 Sensor Dialog

This menu enables you to modify the configuration of the SMART sensor. Note that what is shown in this menu depends on the SMART sensor connected. For detailed information on the possible settings, please refer to the respective sensor documentation.

6.4.2.5 Administer Sensor

Configuration

Here you have the possibility of reading out the current configuration of the SMART sensor, or reading saved settings into the SMART sensor. You can also have a saved configuration displayed or deleted.

Read out configuration from sensor

This menu item enables you to read out the configuration of the SMART sensor and transfer it to the HMG 3000. You can accept the suggested name+number combination, or enter another one.

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Transfer configuration to sensor

This menu enables you to transfer existing SMART sensor configurations to the SMART sensor. This is particularly useful when you want to put new SMART sensors into operation and want to reuse settings previously entered for other SMART sensors.

Display stored sensor configuration

This enables you to have a configuration displayed which is stored in the HMG 3000.

You are then shown detailed information on the sensor configuration selected by you.

Delete stored sensor configuration

This menu enables you to delete a sensor configuration. Selected the configuration

and select Delete on the function bar.

6.4.2.6 Set sensor bus address

This menu enables you to assign a bus address to a sensor. To do this, select a

value from the list and click on Apply on

the function bar. Bus addresses have to be specified when the SMART sensor is operated in a bus system.

(This function is not described further here).

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6.5 Technical Specifications

Sensor Inputs

The HMG features:

• 4 sensor input jacks (channel A – H) for up to 8 analog sensors,

or up to 4 SMART sensors

• 1 input jack with 2 digital inputs (channel I - J) and

a voltage input of -10 V to + 10 V (shown at channel H)

Connecting the sensors is done using an standard M12x1 plug connector (5 pin).

Channel A to H:

• Automatic detection for HSI sensors (pressure, temperature, volumetric flow

rate transmitters and SMART sensors)

• Connection of standard sensors with current or voltage signals

• Differential channels for channel A - B; channel C - D; Differential channel for

flow rate measurement orifice (shown at channel B)

Channel I and J:

• Frequency channels (speed (rpm) measurement, counting function) Frequency range: 1 – 30,000 Hz (≤ ± 0.1% FS max.) Switching threshold / switch-back threshold: 2V/1V Max. input voltage: 50 V; display delay max 2 sec.

Channel A and B (accuracy) Channel C and D (accuracy)

4 – 20 mA (≤ ± 0.1% FS max.) 4 – 20 mA (≤ ± 0.1% FS max.) 0 – 20 mA (≤ ± 0.1% FS max.) 0 – 20 mA (≤ ± 0.1% FS max.) 0 – 10 V (≤ ± 0.1% FS max.) 0 – 10 V (≤ ± 0.5% FS max.) 0 – 5 V (≤ ± 0.2% FS max.) 0 – 50 V (≤ ± 0.1% FS max.) 1 – 5 V (≤ ± 0.2% FS max.) 0 – 5 V (≤ ± 1% FS max.) 1 – 6 V (≤ ± 0.2% FS max.) 1 – 5 V (≤ ± 1% FS max.)

0.5 – 4.5 V (≤ ± 0.1% FS max.) 1 – 6 V (≤ ± 1% FS max.)

0.5 – 5.5 V (≤ ± 0.2% FS max.) 0.5 – 4.5 V (

0.5 – 5.5 V (≤ ± 1% FS max.)

Channel E to G (accuracy) Channel H (accuracy)

4 – 20 mA (≤ ± 0.1% FS max.) 4 – 20 mA (≤ ± 0.1% FS max.) 0 – 20 mA (≤ ± 0.1% FS max.) 0 – 20 mA (≤ ± 0.1% FS max.)

0.5 – 4.5 V (≤ ± 0.1% FS max.) -10 – +10 V (≤ ± 0.5% FS max.)

0.5 – 4.5 V (≤ ± 0.1% FS max.) Battery service times (battery is fully charged)

• HMG 3000 without sensors ca. 11 hours

• HMG 3000 with 2 sensors ca. 9 hours

• HMG 3000 with 4 sensors ca. 7 hours

• HMG 3000 with 8 sensors ca. 4 hours

≤ ± 0.1% FS max.)

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Sampling Rates

• Sampling rate: 0.1 ms - 1 min

• Sampling rate: 0.1 ms for a maximum of two sensors

(other sensor inputs inactive); e.g. for pressure peak measurements

The sampling rate which can be set is dependent on the active measurement channels. The following applies:

• 0.1 ms max. 2 analog input channels

• 0.2 ms max. 4 analog input channels

• 0.5 ms all 10 input channels

• 1.0 ms for SMART sensors

Measured Value Memory

• Single recording: up to 500,000 measured values

• Archive memory: 128 MB

(for ca. 100 individual recordings of 500,000 measured values each)

PC Link Interfaces

• USB port

• standard serial port (RS 232)

for communication and evaluation using the HYDAC HMGWIN 3000 or CMWIN software

Dimensions and Weight

• Measurements: 246 x 174 x 58 mm

• Weight: 1,100 g

Operating and Ambient Conditions

• Operating temperature 0 – 50 °C

• Storage temperature -20 – 60 °C

• Relative humidity: 0 – 70%

Standards with Which the HMG 3000 Complies

• EMC: EN 61000-6-1/2/3/4

• Safety: EN 61010

• Protection rating: IP 40

Supply Voltage

• 12 – 30 V DC

7 Cleaning

The HMG 3000 must not be cleaned with aggressive agents (e.g. alcohol, screen cleaner,...). For cleaning we recommend using a slightly damp cloth.

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8 Accessories

• Pressure transmitters for the following measurement ranges:

- 1 – 9 bar, 0 – 16 bar, 0 – 100 bar, 0 – 250 bar, 0 – 400 bar, 0 – 600 bar Stock no. 909429 Stock des. HDA 4748-H-0009-000 (- 1 – 9 bar) Stock no. 909425 Stock des. HDA 4748-H-0016-000 Stock no. 909554 Stock des. HDA 4748-H-0060-000 Stock no. 909426 Stock des. HDA 4748-H-0100-000 Stock no. 909337 Stock des. HDA 4748-H-0250-000 Stock no. 909427 Stock des. HDA 4748-H-0400-000 Stock no. 909428 Stock des. HDA 4748-H-0600-000

• Temperature transmitters

Stock no. 909298 Stock des. ETS 4548-H-000 (-25 to +100

• Volumetric flow transmitters

Stock no. 909293 Stock des. EVS 3100-H-1 (006 – 060 l/min) Stock no. 909403 Stock des. EVS 3100-H-2 (040 - 600 l/min) Stock no. 909404 Stock des. EVS 3100-H-3 (015 - 300 l/min) Stock no. 909405 Stock des. EVS 3100-H-5 ( 1.2 - 020 l/min) Stock no. 909406 Stock des. EVS 3110-H-1 (006 - 060 l/min) Stock no. 909407 Stock des. EVS 3110-H-2 (040 - 600 l/min) Stock no. 909408 Stock des. EVS 3110-H-3 (015 - 300 l/min) Stock no. 909409 Stock des. EVS 3110-H-5 ( 1.2 - 020 l/min)

• Speed sensors

Stock no. 909436 Stock des. HDS 1000-002 (plug M12x1) Stock no. 904812 Stock des. HDS 1000 reflective foil set (quantity: 25)

• Sensor simulator for 2 HSI transmitters

Stock no. 909414 Stock des. SSH 1000-H-3 (simulator for HMG 3000) ideal for training purposes

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• Miscellaneous accessories

Stock no. 3304374 Stock des. ZBE 26 (Y adapter, blue for HLB 10000) Stock no. 910000 Stock des. ZBE 41 (Y adapter, yellow for CS 1000) Stock no. 6040851 Stock des. ZBE 30-02 (sensor cable M12x1) 2m Stock no. 6040852 Stock des. ZBE 30-05 (sensor cable M12x1) 5m Stock no. 909739 Stock des. ZBE 31 (car charger for HMG 3000) Stock no. 3236597 Stock des. ZBE 34 (adapter M12/Binder, 4 – 20 mA, 2-wire) Stock no. 3236601 Stock des. ZBE 35 (adapter M12/Hirschmann, 4 – 20 mA, 2-wire) Stock no. 909737 Stock des. ZBE 36 (adapter for Stock no. 3224436 Stock des. ZBE 38 (Y distributor) Stock no. 909752 Stock des. UVM 3000 adapter ( Stock no. 909795 Stock des. Bag with carrying strap for HMG 3000

Stock no. 903083 Stock des. Hydraulic adapter kit for the HMG

Contents: 2 adapter hoses DN 2 / 400 mm 1620 / 1620 2 adapter hoses DN 2 / 1000 mm 1620 / 1620 2 direct pressure gauge connectors 1620 / G 1/4 2 adapters 1615 / 1620 2 bulkhead couplings 1620 / 1620

Stock no. 6042959 Stock des. Case for HMG 3000 and accessories

• Spare parts

AS 1000)

for non-HYDAC sensors)

Stock no. 6054296 Stock des. Power supply for HMG 3000 Stock no. 6040585 Stock des. Connection cable

HMG 3000 – PC (USB)

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9 Connection of HMG Components

Pressure transducers Temperature

transducer

Pin 1: 12 V; 50 mA

2: Channel E / F / G / H 3: Signal A / B / C / D 4: GND 5: HSI

Volume transducers

UVM 3000

Pin 1: 12 V; 50 m

2: Channel J 3: Channel I 4: GND 5: Analog input +/-10 V

Power supply

USB connection cable

Speed sensor HDS 1000

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9.1 Pin assignment

Note on H*:

Channel H can be used for sensors with an analog signal (connection to jack D/H) or for voltage measurements of -10 V to +10 V (connection to jack T). The selection of the input signal is done when making the measurement range setting for channel H.

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Power supply connector:

JEITA RC-5320 A

Pin 1 (outer contact): 0V (GND)

Pin 2 (inner contact): +12 – 30 V DC

USB device connector:

Standard USB device connector for standard USB device connector cable.

Jack socket 3.5 mm (RS 232):

For connecting the HMG to the serial port (RS 232) of a PC.

Connecting diagram/pin assignment:

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HYDAC ELECTRONIC GMBH

Hauptstr. 27

D-66128 Saarbrücken

Germany

Web : www.hydac.com

E-mail : electronic@hydac.com

Tel.: +49-(0)6897-509-01

Fax: +49-(0)6897-509-1726

HYDAC Service

If you have any questions concerning repairwork, please don’t hesitate to contact HYDAC Service:

HYDAC SERVICE GMBH

Hauptstr. 27

D-66128 Saarbrücken

Germany

Tel.: +49-(0)6897-509-1936

Fax: +49-(0)6897-509-1933

Notice

The information and particulars provided in this manual apply to the operating conditions and applications described herein. In the event of deviating applications and/or operating conditions, please contact the respective HYDAC department concerned.

If you have any questions, suggestions, or encounter any problems of a technical nature, please contact your HYDAC representative.

All technical details are subject to change without notice.

Edition 11/2007 - V02 R01-S02 Stock no.: 669712

HYDAC HMG 3000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual