DE29804939U1 - Water meter with roller counter and contact device - Google Patents

Description

ABB Patents GmbH

Mannheim 17 March 1998

Mp. No. 98/524 PAT 5-Bä/Bt

Water meter with roller counter and contact device Description

The invention relates to a water meter with a roller counter and a contact device for remote data transmission, wherein a transparent protective cover covers the roller counter and the contact device.

Such a water meter is known from DE 33 40 508 C2. If such a water meter is to be used as a metering water meter, this has so far failed because a metering device would cover the roller counter.

The task is to specify a water meter of the type mentioned above, which enables the accommodation of a resettable electronic counter within the transparent protective cover without impairing the readability of the roller counter.

This object is achieved according to the invention in that a circuit board with a resettable LCD module and a power supply are arranged within the protective cover in an area that excludes the roller counter.

The numbers on the roller counter remain legible and the transparent protective cover provides additional splash protection for the electronic components.

Mp.No. 98/524

17 March 1998

Preferably, the circuit board, the LCD module and the power supply are arranged in the peripheral area of the protective cover.

To reset the electronic counter contained in the LCD module, it is intended that a reed switch is assigned to the LCD module, which can be controlled via a permanent magnet arranged from outside the protective cover.

According to another embodiment, the electronic counter can be reset by actuating a microswitch assigned to the LCD module, whereby the protective cover has a hole closed by a test adhesive and whereby the microswitch is accessible through the hole after the test adhesive is cut through.

According to another design, a push button is assigned to the wall of the protective cover, the sensor of which resets the electronic counter.

The water meter according to the invention is described using various embodiments and the schematic figures 1 to 8. Here:

Fig. 1 a partial section through a roller counter and a protective cover of a

water meter,

Fig. 2 is a view in the direction of arrow 2 of Figure 1,

Fig. 3 a top view of a protective hood,

Fig. 4 is a section along the line IV-IV of Fig. 3,

Fig. 5 and 6 show another embodiment of the embodiment according to Fig. 3 and 4 and

Fig. 7 and 8 show a further development of the embodiment according to Fig. 3 and 4.

Fig. 1 shows a water meter 1 with a roller counter 2, to which a contact device (not shown) is assigned for remote transmission of measured values. In connection with Fig. 2, the numbers of the roller counter 2 can be seen below a pressure glass 3, which is unhindered for the viewer. In the peripheral area of a transparent protective cover 5, an LCD module 6 is arranged, which has a circuit board

Mp.No. 98/524 "5 SL.: . I : 'I. ¹ ..:!*'*. 17 March 1998

with resettable electronic counter 7. A battery 8, also arranged inside the protective cover 5, supplies the LCD module 6 with power via lines 9. In Fig. 2, a label field 10 can be seen, which is arranged between the roller counter 2 and the LCD module 6. Figs. 1 and 2 show that the contact device and the LCD module are arranged in a very small space, but still a clear view of the roller counter is guaranteed.

Fig. 3 and 4 show an embodiment of the water meter for resetting the electronic counter 7 assigned to the LCD module 6. In the top view of a protective cover 5 in Fig. 3, next to the LCD module 6 and the labeling field 10, a test adhesive mark 11 can be seen, which covers a hole 12 made in the wall of the protective cover (Fig. 4). As can also be seen from Fig. 4, the LCD module is assigned a microswitch 13, which is arranged below the hole 12. After cutting through the test adhesive mark, the microswitch can be actuated using a rod-shaped object that is guided through the hole, which causes the electronic counter to be reset.

Another embodiment for resetting the electronic counter from the outside is shown in Figs. 5 and 6. While Fig. 5 shows a top view of the protective cover 5, Fig. 6 shows a section along the line VI-IV of Fig. 5. Here, the LCD module 6 is assigned a reed switch 14, which can be actuated from outside the protective cover via a permanent magnet (not shown). The actuation of the reed switch triggers the resetting of the electronic counter.

Another embodiment for resetting the electronic counter from the outside can be seen in Figs. 7 and 8. Fig. 7 (view of the protective cover) and Fig. 8 (section along line VIII-VIII of Fig. 7) show a push button 15 arranged in the wall of the protective cover 5, the sensor 16 of which protrudes into the interior of the protective cover 5 and triggers the resetting of the electronic counter.

Claims (5)

Mp.No. 98/524 : ·].: . : : \.\.:.··. 17 March 1998 Protection claims 1. Water meter with a roller counter (2) and a contact device for remote data transmission, wherein a transparent protective cover (5) covers the roller counter and the contact device, characterized in that a circuit board with a resettable LCD module (6) and a power supplier (8) are arranged within the protective cover (5) in an area which leaves out the roller counter (2). 2. Water meter according to claim 1, characterized in that the circuit board, the LCD module (6) and the power supply (8) are arranged in the peripheral area of the protective cover (5), 3. Water meter according to claim 1 or 2, characterized in that the LCD module (6) is assigned a reed switch (14) which can be controlled via a permanent magnet arranged from outside the protective cover. 4. Water meter according to claim 1 or 2, characterized in that the LCD module (6) is assigned a microswitch (13), that the protective cover (5) has a hole (12) closed by a test adhesive mark (11) and that after the test adhesive mark has been cut through, the microswitch (13) is accessible through the hole (12). 5. Water meter according to claim 1 or 2, characterized in that a push button (15) is arranged in the wall of the protective cover (5), the sensor (16) of which causes the electronic counter (7) of the LCD module (6) to be reset.