Dew Point Transmitter with Display Manufacturer
The AIDP24TD Dew Point Transmitter with Display by Aranka Instruments LLP is a microprocessor-based dew point controller designed for compressed air dryers, plastic dryers, additive manufacturing, and gas quality testing. Equipped with a clear digital display for real-time dew point, humidity, and temperature readings, it offers 4–20 mA output and RS-485 Modbus RTU for seamless system integration. As a leading Dew Point Transmitter with Display Manufacturer and Supplier in Ahmedabad, Aranka Instruments delivers high-accuracy, durable, and efficient solutions that ensure reliable moisture monitoring, prevent condensation and corrosion, and maintain consistent air quality in industrial processes.
Understanding the dew point in compressed air systems is essential because it directly affects performance, safety, and product quality. In applications like pneumatic tools or tire inflation, dew point may not be critical, but when air lines are exposed to freezing conditions, excess moisture can condense, freeze, and block pipelines. In modern industrial setups, compressed air powers a wide range of sensitive equipment where even minor condensation can cause corrosion, damage, or malfunction. Processes such as paint spraying, coating, and pharmaceutical manufacturing require extremely dry air to maintain product integrity and prevent contamination. Therefore, accurate dew point monitoring ensures optimal efficiency, equipment protection, and compliance with stringent air purity standards.
What is the typical range of dew point temperatures to be found in compressed air?
Dew point temperatures in compressed air range from ambient down to -80 °C (-112 °F), sometimes lower in special cases. Compressor systems without air drying capability tend to produce compressed air that is saturated at ambient temperature. Systems with refrigerant dryers pass the compressed air through some sort of cooled heat exchanger, causing water to condense out of the air stream. These systems typically produce air with a dew point no lower than 5 °C (23 °F). Desiccant drying systems absorb water vapor from the air stream and can produce air with a dew point of -40 °C (-40 °F) and drier if required.
What are the standards for the quality of compressed air?
ISO8573.1 is an international standard that specifies the quality of compressed air. The standard defines limits for three categories of air quality:
* Maximum particle size for any remaining particles
* Maximum allowable dew point temperature
* Maximum remaining oil content
Each category is given a quality class number between 1 and 6 according to the reference values shown in the table below. As an example, a system that conforms to ISO8573.1 and is rated for class 1.1.1 will provide air with a dew point no higher than -70 °C (-94 °F). All remaining particles in the air will be 0.1 um or smaller, and the maximum oil content will be 0.01 mg/m3. There are other standards for compressed air quality, such as ANSI/ISA- 7.0.01-1996 for instrument air.
- Fast Sensing Time.
- RS485 Modbus Communication.
- S.S.316 Filter.
- M12 Connector.
- IP67 protection.
- Bright OLED LCD Display.
- 1nos Relay output.
- Analogue 4-20mA output.
- Dew Point, Humidity & Temperature on Same Screen.
| Power | 24VDC | |
| Range | -100 ~ 60°Cdp [Scalable] | |
| Analogue Output | 4~20mA | |
| Communication | RS485 Modbus RTU | |
| Sensor Connection | 3/4″ BSP Male | |
| Sensor MOC | S.S.304 | |
| Flow Cell MOC | S.S.304 | |
| Interface Cable | 6 meters | |
| Filter MOC | S.S.316 | |
| Display | OLED LCD | |
| Digital Output | 1 No. 3A Relay 1CO | |
On Demand.
Coming Soon.
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Compressed Air Systems:
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HVAC Systems:
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Industrial Drying Processes:
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Metal Heat Treatment:
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Breathing Air and Glove Box Monitoring:
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Other Applications:
Frequently Asked Questions (FAQs)
What is the AIDP24TD and how does it differ from a blind transmitter?
The AIDP24TD is a microprocessor-based dew point transmitter/controller that includes a local display for real-time readout of dew point, humidity, and temperature—while still offering 4-20 mA output and RS-485 Modbus RTU communication. A “blind” transmitter, by contrast, lacks a display and only provides outputs.
What sensing range and accuracy can the AIDP24TD provide?
The AIDP24TD supports dew point measurement over a specified range (to be defined in your datasheet) and offers high accuracy and stability over time. (You should insert your specific numbers here.)
What outputs and communication protocols are supported?
It offers a 4–20 mA analog output and RS-485 Modbus RTU digital communication, making it easy to integrate into control systems and SCADA.
How is the display used and what information does it show?
The built-in display shows current values of dew point, humidity, and temperature. It may also support menu navigation for configuration and diagnostics (depending on your firmware).
What power supply is needed?
The device typically operates on 24 V DC (or another specified DC supply). (Please insert your precise requirement.)
How often should the AIDP24TD be calibrated or maintained?
Routine calibration (e.g. annually or semi-annually) is recommended to maintain accuracy. The frequency depends on usage conditions and stability requirements. Maintenance includes cleaning the sensor filter and ensuring the sampling line remains free of contaminants.