Measuring instrument particularly useful for measuring waste gases from heating installations
First Claim
1. A compact measuring instrument for measuring waste from heating installations, comprising at least one sensor and pump arranged in a measuring channel, a microcomputer for controlling the measuring sequence and for processing sensor signals, and connected to the microcomputer an alphanumeric display device and two control elements, wherein one control element serves to page in a selection menu by which one menu item is displayed on the display device, and wherein the other control element serves to input the menu item displayed, said compact measuring instrument is carried by an operator using only one hand and is easily operated by the same one hand, wherein said control elements comprise push-buttons and wherein an additional push-button is connected to an on/off switch, and wherein each of said push-buttons are arranged in the vicinity of one edge of a front side of the measuring instrument, which side also bears the display device.
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Abstract
The present invention relates to a measuring instrument, in particular for measuring waste gases from heating installations, comprising at least one sensor and pump arranged in a measuring channel, a microcomputer for controlling the measuring sequence and for processing the sensor signals, which is connected to an alphanumeric display device and two control elements, wherein one control element serves for paging in a selection menu, by which one menu item is displayed on the display device, and wherein the other control element serves to input in accordance with the menu item displayed.
30 Citations
15 Claims
- 1. A compact measuring instrument for measuring waste from heating installations, comprising at least one sensor and pump arranged in a measuring channel, a microcomputer for controlling the measuring sequence and for processing sensor signals, and connected to the microcomputer an alphanumeric display device and two control elements, wherein one control element serves to page in a selection menu by which one menu item is displayed on the display device, and wherein the other control element serves to input the menu item displayed, said compact measuring instrument is carried by an operator using only one hand and is easily operated by the same one hand, wherein said control elements comprise push-buttons and wherein an additional push-button is connected to an on/off switch, and wherein each of said push-buttons are arranged in the vicinity of one edge of a front side of the measuring instrument, which side also bears the display device.
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15. A compact measuring instrument for measuring waste from heating installations, comprising at least one sensor and pump arranged in a measuring channel, a microcomputer for controlling the measuring sequence and for processing sensor signals, and connected to the microcomputer an alphanumeric display device and two control elements, wherein one control element serves to page in a selection menu by which one menu item is displayed on the display device, and wherein the other control element serves to input the menu item displayed, wherein after switching-on the instrument, an oxygen measuring device present in the measuring instrument is calibrated to 20.9% by volume and a CO measuring device present in the measuring instrument is calibrated to 0 by said microcomputer.
Specification