DE102019102165A1 - Transmitter and measuring device for measurement and automation technology - Google Patents

Abstract

The invention relates to a transmitter (1) of measurement and automation technology comprising: a housing (10) with at least one housing chamber (10.1) and a housing wall (10.2) forming the housing chamber, the housing wall having at least one housing opening (10.3) and one housing opening surrounding border (10.4), which border is formed by the housing wall; a cover (11) with a viewing window (11.1), which cover is designed to close the housing opening, a display module (12) arranged in the housing chamber with a display unit ( 12.1), a display carrier (12.2), and a display holder (12.3), the display unit being carried by the display carrier and being arranged in a central region (12.21) of the display carrier, and wherein the display carrier is held on the housing wall by means of the display holder Measuring / operating circuit (13) for operating the display module, the control panel and at least s of a sensor and / or actuator, the display module being arranged behind an inside of the viewing window, the display carrier being resiliently mounted opposite the display holder, the display module being set up to be pressed against the viewing window by means of the display unit.

Description

The invention relates to a transmitter with a display unit and a field device of measurement and automation technology with such a transmitter, the display unit being located behind a viewing window of a housing of the transmitter.

The state of the art shows transmitters or field devices of measurement and automation technology with display units. For example, the DE102016106179A1 a field device with a display unit.

For good readability and good operability if the operating function of the display unit is available, it is necessary that the display unit is optimally aligned with respect to the viewing window. This requires an increased effort in the manufacture of a transmitter and can lead to poor results in terms of readability and operability if used improperly.

The object of the invention is therefore to propose a transmitter and a field device with such a transmitter, in which the display unit can be easily and securely positioned relative to the viewing window.

The object is achieved by a transmitter according to independent claim 1 and by a measuring device according to independent claim 11.

• Ein Gehäuse mit mindestens einer Gehäusekammer und eine die Gehäusekammer ausbildende Gehäusewandung, wobei die Gehäusewandung mindestens eine Gehäuseöffnung und eine die Gehäuseöffnung umgebende Umrandung aufweist, welche Umrandung durch die Gehäusewandung ausgebildet ist;
• ein Deckel mit Sichtfenster, welcher Deckel dazu eingerichtet ist, die Gehäuseöffnung zu verschließen,
• ein in der Gehäusekammer angeordnetes Anzeigemodul mit einer Anzeigeeinheit, einem Anzeigeträger, und einer Anzeigehalterung, wobei die Anzeigeeinheit durch den Anzeigeträger getragen und in einem Zentralbereich des Anzeigeträgers angeordnet ist, und wobei der Anzeigeträger mittels der Anzeigehalterung an der Gehäusewandung gehalten ist,
• eine elektronische Mess-/Betriebsschaltung zum Betreiben des Anzeigemoduls, des Bedienfelds sowie mindestens eines Sensors und/oder Aktors,
• wobei das Anzeigemodul hinter einer Innenseite des Sichtfensters angeordnet ist,
• wobei der Anzeigeträger federnd gegenüber der Anzeigehalterung gelagert ist, wobei das Anzeigemodul dazu eingerichtet ist, mittels der Anzeigeeinheit gegen das Sichtfenster gepresst zu werden.

An inventive transmitter of measurement and automation technology includes:

• A housing with at least one housing chamber and a housing wall forming the housing chamber, the housing wall having at least one housing opening and a border surrounding the housing opening, which border is formed by the housing wall;
• a cover with a viewing window, which cover is set up to close the housing opening,
• a display module arranged in the housing chamber with a display unit, a display carrier, and a display holder, the display unit being carried by the display carrier and being arranged in a central region of the display carrier, and the display carrier being held on the housing wall by means of the display holder,
• an electronic measuring / operating circuit for operating the display module, the control panel and at least one sensor and / or actuator,
• the display module being arranged behind an inside of the viewing window,
• wherein the display carrier is resiliently mounted with respect to the display holder, the display module being set up to be pressed against the viewing window by means of the display unit.

Holding the display carrier by means of the display holder on the housing wall can be set up directly or indirectly via further elements.

Due to the resilient mounting, an exact positioning of the display holder with respect to the viewing window is unnecessary, since the resilient mounting of the display carrier is movable relative to the display holder and is pressed against the viewing window. A suitable contact pressure can be set by suitable selection of spring constants of the suspensions.

In one embodiment, the display holder and the display carrier are detachably bound to one another by means of at least one latching mechanism, the latching mechanism being set up to define a spring-loaded range of motion between the display holder and the display carrier.

This can prevent the display carrier and the display holder from being separated from one another.

In one configuration, the display holder and / or the display carrier has at least one latching hook, and wherein the display carrier and / or the display holder has at least one corresponding latching opening, latching hooks being set up to engage in a corresponding latching opening,
wherein a latching hook and a corresponding latching opening each form a latching mechanism.

In one configuration, the display carrier and / or the display holder has at least two spring devices, each with a spring, the spring device being set up to act on an edge region of the display carrier surrounding the central region of the display carrier.

In one configuration, the spring device has a guide channel which is set up to at least partially accommodate the spring,
wherein the spring has a spring head at a first end, which is adapted in cross section to a cross section of the guide channel.

In this way it can be ensured that the suspension only acts in the axial direction of the springs and that lateral movements of the display carrier with respect to the display holder are prevented.

In one configuration, the display module has display electronics which are set up to operate the display unit,
the display electronics being connected to the electronic measuring / operating circuit by means of an electrical connection,
the display electronics being held by the display carrier or by the display holder.

In one configuration, the transmitter has a capacitive or inductive control panel arranged in the housing chamber and having a plurality of control surfaces;
the control panel being arranged in particular between the viewing window and the display unit, and the control panel being optically transparent in particular.

In one embodiment, the display electronics are held by the display holder,
wherein the display unit or the display unit and the control panel are connected to the display electronics by means of at least one flexible data cable.

• Einen Messumformer gemäß einem der vorigen Ansprüche;
• Ein Sensormodul zum Erfassen einer Messgröße und zum Bereitstellen von messgrößenabhängigen Signalen;
• wobei die elektronische Mess-/Betriebsschaltung zum Betreiben des Sensormoduls und zum Bereitstellen von Messwerten von mindestens einer Messgröße des Sensormoduls eingerichtet ist.

A field device of measurement and automation technology according to the invention comprises:

• A transmitter according to one of the preceding claims;
• A sensor module for recording a measured variable and for providing signals dependent on the measured variable;
• wherein the electronic measuring / operating circuit is set up to operate the sensor module and to provide measured values of at least one measured variable of the sensor module.

• Durchflussmessgerät, Füllstandsmessgerät, Temperaturmessgerät, Druckmessgerät.

In one embodiment, the field device is a field device from the following list:

• Flow meter, level meter, temperature meter, pressure meter.

• 1 zeigt schematisch einen Aufbau eines beispielhaften erfindungsgemäßen Messumformers;
• 2 zeigt einen schematischen Längsschnitt durch ein beispielhaftes erfindungsgemäßes Anzeigemodul;
• 3 zeigt eine schematische Aufsicht auf einen beispielhaften erfindungsgemäßen Anzei geträger;
• und 4 skizziert ein beispielhaftes erfindungsgemäßes Feldgerät.

The invention is described below using exemplary embodiments.

• 1 schematically shows a structure of an exemplary transmitter according to the invention;
• 2nd shows a schematic longitudinal section through an exemplary display module according to the invention;
• 3rd shows a schematic plan view of an exemplary display carrier according to the invention;
• and 4th outlines an exemplary field device according to the invention.

1 shows a schematic structure of a transmitter 1 with a housing 10th , being a housing wall 10.2 a housing chamber 10.1 trains. There is an electronic measuring / operating circuit in the housing chamber 13 , a display module 12th and a control panel 16 arranged. As shown here, the electronic measuring / operating circuit can be set up with display electronics 12.4 , please refer 2nd , by means of an electrical connecting line 17.1 to communicate, the display electronics being set up to operate a display unit and a control panel, see 2nd . Alternatively, the electronic measuring / operating circuit can be set up to operate the operating unit and the display unit.

The housing wall has a housing opening 10.3 on which by a border 10.4 the housing wall is formed. The case opening is through a lid 11 with a viewing window 11.1 locked. The display module is pressed onto an inside of the viewing window, and an operating unit can be arranged between the display module and the viewing window, as shown here. The control panel is largely optically transparent, so that there is no disadvantageous interaction with a display unit, see 2nd , consists. However, the presence of a control panel is not necessary.

The display module is, for example, as shown here, directly on the housing wall 10.2 attached, but can also be attached to the housing wall via a separate attachment means, not shown. The skilled person will choose a technical implementation according to his needs.

2nd shows a longitudinal section through an exemplary display module according to the invention 12th which is a display unit 12.1 , an advertising medium 12.2 , a display bracket 12.3 and display electronics 12.4 includes. The display electronics can be attached to the display holder as shown here. Alternatively, the display electronics can also be attached to the display support.

The display unit is held by the display carrier, so that when mounting the Transmitter against the inside of the viewing window, see 1 is pressed. The display carrier is set up by means of a locking mechanism 14 with the display bracket 12.3 to be connected. As shown here, the display carrier can have at least one locking hook 14.1 have, which is set up when mounting the display module (represented by arrows) in each case in a snap opening 14.2 of the display holder. The person skilled in the art can attach latching hooks and engagement openings as desired to the display carrier and display holder.

The display carrier has spring devices 15 on which within a sprung range of motion 14.3 a pressure between display media 12.2 and display bracket 12.3 causes. By gently pressing the display module against the viewing window, this ensures that the display unit is level on the inside of the viewing window 11.1 lies on. The display unit is with the display electronics 12.4 using a flexible data cable 17.2 connected. In this way, the display electronics can operate the display unit.

As an alternative or in addition, the display holder can also have corresponding spring devices.

The configuration of the display module shown here is to be understood as an example. For example, a person skilled in the art can set up a latching mechanism according to his wishes and is not bound to the geometric configuration shown here.

3rd shows a plan view of an exemplary display medium according to the invention, which has an edge area 12.21 and a central area 12.22 with a recess for arranging the display unit 12.1 having. There are three spring devices in the edge area 15 arranged so that a uniform mobility of the display carrier relative to the display holder is ensured. Alternatively or additionally, the display holder can also have spring devices. The display carrier furthermore has three latching hooks distributed along a circumference of the display carrier 14.1 on, which are set up to engage in an associated snap-in opening in order to ensure a uniform freedom of movement.

In 3rd is also a longitudinal section S represented by a spring device. A spring device has a spring 15.1 with a spring head November 15 on, the spring at least partially in a guide channel 15.2 is arranged. A cross section of the spring head is adapted to a cross section of an inner volume of the guide channel, so that the spring head can slide in the guide channel with little or no play. This can prevent the springs from being laterally deflected in the event of an accidental transverse load.

4th outlines an exemplary field device according to the invention 30th with a transmitter according to the invention 1 and a sensor module 30th for recording a measured variable and for providing measured variable-dependent signals, the sensor module being arranged on a media-carrying measuring tube.

The sensor module can include, for example, at least one sensor from the following list: temperature sensor, ultrasonic transducer, measuring electrode.

The field device is, for example, a flow measuring device, level measuring device, temperature measuring device or pressure measuring device.

These lists are examples and should not be interpreted as restrictive.

Reference list

1

Transmitter

10th

casing

10.1

Housing chamber

10.2

Housing wall

10.3

Housing opening

10.4

Outline

11

cover

11.1

Viewing window

11/11

Inside of the viewing window

12th

Display module

12.1

Display unit

12.2

Advertising media

12.21

Central area of the display medium

12.22

Edge area of the display medium

12.3

Display bracket

12.4

Display electronics

13

electronic measuring / operating circuit

14

Locking mechanism

14.1

Locking hook

14.2

Snap opening

14.3

Freedom of movement

15

Spring device

15.1

feather

November 15

Spring head

15.2

Guide channel

16

Control panel

16.1

Control surface

17.1

electrical connection

17.2

flexible data cable

20

Sensor module

30th

Field device

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102016106179 A1 [0002]

Claims (10)

Measuring transducer (1) of measurement and automation technology comprising: a housing (10) with at least one housing chamber (10.1) and a housing wall (10.2) forming the housing chamber, the housing wall having at least one housing opening (10.3) and a border surrounding the housing opening (10.4 ) has which border is formed by the housing wall; a cover (11) with a viewing window (11.1), which cover is set up to close the housing opening, a display module (12) arranged in the housing chamber with a display unit (12.1), a display carrier (12.2), and a display holder (12.3) , wherein the display unit is carried by the display carrier and is arranged in a central area (12.21) of the display carrier, and wherein the display carrier is held on the housing wall by means of the display holder, an electronic measuring / operating circuit (13) for operating the display module, the control panel and at least one sensor and / or actuator, the display module being arranged behind an inside (11.11) of the viewing window, characterized in that the display support is resiliently mounted relative to the display holder, the display module being set up to be pressed against the viewing window by means of the display unit become. Transmitter after Claim 1 , wherein the display holder and the display carrier are releasably bound to one another by means of at least one latching mechanism (14), the latching mechanism being set up to ensure a sprung movement range (14.3) between the display holder and the display carrier. Transmitter after Claim 2 , wherein the display holder and / or the display carrier has at least one latching hook (14.1), and wherein the display carrier and / or the display holder has at least one corresponding latching opening (14.2), latching hooks being set up to engage in a corresponding latching opening, respectively Snap hooks and a corresponding snap opening each form a snap mechanism (14). Transmitter according to one of the preceding claims, wherein the display carrier and / or the display holder has at least one spring device (15) with at least one spring (15.1), the spring device being set up on an edge region (12.22) of the display carrier which surrounds the central region of the display carrier to act. Transmitter according to one of the preceding claims, the spring device having a guide channel (15.2) which is set up to at least partially accommodate the spring, the spring having a spring head (15.11) at a first end, which is adapted in cross section to a cross section of a lumen of the guide channel. Transmitter according to one of the preceding claims, the display module having display electronics (12.4) which is set up to operate the display unit, the display electronics being connected to the electronic measuring / operating circuit by means of an electrical connection (17.1), the display electronics being held by the display carrier or by the display holder. Transmitter according to one of the preceding claims, wherein the transmitter or the display module has a capacitive or inductive control panel (16) arranged in the housing chamber, in particular with a plurality of control surfaces (16.1); the control panel being arranged in particular between the viewing window and the display unit, and the control panel being optically transparent in particular. Transmitter after Claim 7 , the display electronics being held by the display holder, the display unit or the display unit and the control panel being connected to the display electronics by means of at least one flexible data cable (17.2). Field device (30) of measurement and automation technology comprising: A transmitter (1) according to one of the preceding claims; A sensor module (20) for detecting a measured variable and for providing signals dependent on the measured variable; wherein the electronic measuring / operating circuit (13) is set up to operate the sensor module and to provide measured values of at least one measured variable of the sensor module. Field device (30) according to one of the preceding claims, wherein the field device is a field device from the following list: Flow meter, level meter, temperature meter, pressure meter.

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