Indicator Display for Level Sensors

Product Specifications

Technical details and manufacturing context for Indicator Display

Definition

The indicator display is the visual output component within a level sensor or indicator system that presents real-time or processed level measurement data to operators. It serves as the human-machine interface, converting electrical signals from the sensor into readable information such as numeric values, graphical representations, or status indicators. This component is essential for monitoring, control, and decision-making in industrial processes involving liquid or solid level measurement. The display typically uses technologies such as LCD, TFT, or OLED, with options for monochrome or full-color (up to 16.7 million colors) output. Display sizes range from 2.4 to 7.0 inches diagonal, with resolutions from 320×240 to 1920×1080 pixels. Brightness levels vary from 300 to 1000 cd/m² to accommodate indoor and outdoor visibility. The operating temperature range is -20 to 70 °C, with storage from -30 to 80 °C. Power supply is 9–36 V DC, with consumption between 2 and 15 W depending on backlight settings. The display is protected against dust and water ingress according to IP54–IP65 ratings (IEC 60529). Viewing angles are 60–80 degrees horizontal/vertical. Communication interfaces include RS232 and RS485. Materials used include polycarbonate, glass, and aluminum alloy. Weight varies from 0.5 to 2.0 kg. These specifications are typical ranges; actual values must be confirmed with the manufacturer for the specific model and application.

Working Principle

The indicator display receives electrical signals from the level sensor's processing unit. These signals are converted into visual information through various technologies such as LED, LCD, or OLED displays. The display controller interprets the data format and refreshes the screen to show current level measurements, often including units, setpoints, alarms, and other relevant parameters. The display operates by modulating light or emitting light to form characters and graphics. For LCDs, a backlight is used, and the controller adjusts pixel states to represent data. For OLEDs, each pixel emits light directly. The display updates at a rate sufficient for real-time monitoring, and the interface allows operators to read values, trends, or status indicators. The working principle ensures accurate representation of the sensor's output, enabling effective process control.

Common Materials

Polycarbonate, Glass, Aluminum alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Display Type	LCD	LCD for low power, TFT for high visibility
Display Size	2.4–7.0 inch	Diagonal measurement
Resolution	320×240 – 1920×1080 pixels	Higher resolution for detailed data
Brightness	300–1000 cd/m²	Higher for outdoor visibility
Operating Temperature	-20–70 °C	Extended range available
Storage Temperature	-30–80 °C	Non-operating
Supply Voltage	9–36 V DC	Wide input range
Power Consumption	2–15 W	Depends on backlight
Ingress Protection	IP54–IP65	For dust and water resistanceIEC 60529
Display Color	Monochrome – 16.7M colors	Color depth options
Viewing Angle	60–80 °	Horizontal/vertical
Interface	RS232/RS485	Communication options
Weight	0.5–2.0 kg	Varies with size

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Display Panel
Visual presentation of level data through pixels or segments

Material: LCD/LED/OLED materials
Controller Board
Processes input signals and drives the display panel

Material: FR4 PCB with electronic components
Bezel/Frame Part
Protects and mounts the display components

Material: Plastic or metal alloy
Backlight Unit
Provides illumination for the display in low-light conditions

Material: LED array with diffuser

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Level Sensor/Indicator

View system integration details

Manufacturers of Indicator Display

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Frequently Asked Questions

What is the typical display size range?

The display size ranges from 2.4 to 7.0 inches diagonal, as per the directory reference. Confirm the exact size for your model.

What communication interfaces are available?

The display supports RS232 and RS485 interfaces. Verify compatibility with your system.

What is the operating temperature range?

The operating temperature range is -20 to 70 °C. Storage temperature is -30 to 80 °C. Check the datasheet for your specific unit.

What ingress protection ratings are available?

The display offers IP54 to IP65 protection per IEC 60529. Confirm the rating for your application environment.

Data Basis

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Preliminary Technical Classification

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pressure:	0 to 10 bar
other spec:	Ambient humidity: 0-95% RH non-condensing
temperature:	-20°C to +70°C

Indicator Display

Product Specifications

Applied To / Applications

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Application Fit & Sizing Matrix

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