A lid to be connected to a housing of a status display for a sensor, with a basic body comprising a covering surface and at least one side wall, wherein the basic body has at least one light-transmissive light emitting region to facilitate an illumination of desired areas of the lid that is homogeneous and space-saving, with a first reflector unit and a second reflector unit arranged opposite each other, and wherein an opening for arranging a lighting means is formed in the second reflector unit, wherein the light emitted by the lighting means is reflected to the at least one light emitting region by means of the first reflector unit and the second reflector unit.

A lid to be connected to a housing of a status display for a sensor, with a basic body comprising a covering surface and at least one side wall, wherein the basic body has at least one light-transmissive light emitting region to facilitate an illumination of desired areas of the lid that is homogeneous and space-saving, with a first reflector unit and a second reflector unit arranged opposite each other, and wherein an opening for arranging a lighting means is formed in the second reflector unit, wherein the light emitted by the lighting means is reflected to the at least one light emitting region by means of the first reflector unit and the second reflector unit.

There is provided a display panel module unit having a narrow frame suitable for a display unit of a small-sized measuring apparatus. A panel module unit includes a first panel part, a second panel part, and an intermediate cover housed in a housing part in order from a front side to a rear side. The housing part includes an annular side wall and at least one fixing means attached on an inner peripheral surface of the side wall, and the fixing means is a means for fixing a position of the intermediate cover in the housing part. The second panel part is housed between the first panel part and the intermediate cover, and a position of the second panel part is indirectly fixed by the intermediate cover. The second panel part is provided with a biasing means for biasing the first panel part from the rear side toward the front side.

There is provided a display panel module unit having a narrow frame suitable for a display unit of a small-sized measuring apparatus. A panel module unit includes a first panel part, a second panel part, and an intermediate cover housed in a housing part in order from a front side to a rear side. The housing part includes an annular side wall and at least one fixing means attached on an inner peripheral surface of the side wall, and the fixing means is a means for fixing a position of the intermediate cover in the housing part. The second panel part is housed between the first panel part and the intermediate cover, and a position of the second panel part is indirectly fixed by the intermediate cover. The second panel part is provided with a biasing means for biasing the first panel part from the rear side toward the front side.

A removable display and operating module for a measuring device and/or a field device for level measurement or for limit level determination is provided, the removable display and operating module including a radio module; and an electrical connection element configured to form a detachable connection with a connection counterpart for transmitting radio frequency signals from the radio module to a radio frequency housing feedthrough and/or to an antenna of the measuring device and/or the field device. There is also provided a sensor housing for a field device for level measurement or for limit level determination, the sensor housing being configured to completely accommodate the removable display and operating module. A method of manufacturing a field device for level measurement or level limit determination is also provided.

A removable display and operating module for a measuring device and/or a field device for level measurement or for limit level determination is provided, the removable display and operating module including a radio module; and an electrical connection element configured to form a detachable connection with a connection counterpart for transmitting radio frequency signals from the radio module to a radio frequency housing feedthrough and/or to an antenna of the measuring device and/or the field device. There is also provided a sensor housing for a field device for level measurement or for limit level determination, the sensor housing being configured to completely accommodate the removable display and operating module. A method of manufacturing a field device for level measurement or level limit determination is also provided.

A method, apparatus and system are for displaying measurement information. An embodiment of the method includes: obtaining a display instruction for displaying measurement information of at least one second transmitter; and displaying, after obtaining the display instruction, the measurement information of the at least one second transmitter on a display screen of the a first transmitter. The first transmitter and the at least one second transmitter perform data communication with a distributed I/O device according to a preconfigured data transmission path. Further, the measurement information of the at least one second transmitter is obtained by means of the distributed I/O device according to the preconfigured data transmission path. The embodiment of the method enables an operator to conveniently view the measurement information of the second transmitter on the first transmitter nearby, without viewing the information on a remote device manager or the second transmitter.

Light emitted from laser light source is divided by prism into two light flux and light flux corresponding to light emitted from slope and slope. Light flux and light flux are diffused by diffusion plate and diffusion plate to become light flux and light flux. By overlapping light flux and light flux, a radiation distribution with a wide angle and high light intensity can be obtained.

A digital encoder with a screen includes a key body, and a display assembly is configured inside the key body. The display assembly includes a display carrier assembly, display element configured on the display carrier assembly and display circuit element configured in the display carrier assembly, where one side of the display assembly is in connection with a rotating assembly movably configured on a carrier housing, and a rotary encoder sensor and pressing element are configured between the rotating assembly and carrier housing, thereby allowing the assembly of the key body to be more convenient through modulization structures, and allowing the key body to have multiple functions of display, press and rotation at the same time to increase use convenience.

A gauge device is provided and includes an analog display to signify a measured valued, a motor and worm gear arrangement which is configured to retain a current state of the analog display when de-energized or to change the analog display when energized and a control system. The control system is configured to normally de-energize the motor and worm gear arrangement and to energize the motor and worm gear arrangement only in accordance with a calculated state of the analog display differing from the current state by at least a threshold level.