Other Brands
Donaldson Dew Point UDM515
Home > Donaldson > Compressed Air Monitoring > UDM515 Need Donaldson UDM515? Dew Point for Compressed air and desiccant dryer monitoring. Supplied wit…
Specifications
| Brand | Donaldson |
|---|---|
| Model Number | UDM515 |
| Official Product Name | Pressure Dew Point Sensor (UDM 515) |
| Applicable System | Compressed air and desiccant dryer monitoring |
| Product Type | Dew Point / Moisture Sensor |
| Equivalent Standard | Contact us for cross-reference and alternative models |
| Product Status | In Stock |
| Analog Output | 4-20 mA |
| Digital Interface | Modbus-RTU (RS-485), newer variants |
| Pressure Resistance | up to 350 bar (special version) |
| Sensor Protection | Sintered stainless-steel cap, condensation-insensitive |
| Typical Application Medium | Compressed air, technical gases (O2, N2, Ar) |
| Measuring Range | -80 to +20 Ctd (dew point) |
Product Description
It measures dew point across a -80 to +20 Ctd range and outputs the value via a standard 4-20 mA analog signal, with newer units adding a digital Modbus-RTU (RS-485) interface. The sensing element is insensitive to condensation and protected by a sintered stainless-steel cap, giving reliable long-term stability even with contaminated or changing media. The Donaldson UDM515 is a pressure dew point sensor designed for compressed-air and process-gas drying systems, particularly desiccant (adsorption) dryers.
Basic Product Information
- 4-20 mA analog output plus Modbus-RTU (RS-485) digital interface on newer variants
- Condensation-insensitive sensor with sintered stainless-steel protective cap
- Integrated temperature compensation for improved accuracy across ambient temperatures
- Pressure resistant up to 350 bar (special version)
- Wide measuring range -80 to +20 Ctd for dry-air monitoring
Technical Specifications
Version & Model Difference
The UDM515 supersedes earlier FA 510/515 dew point sensors, adding a digital Modbus-RTU interface alongside the traditional 4-20 mA output and improved evaluation electronics with higher signal resolution. Standard and high-pressure (350 bar) versions are offered depending on the process.
Application Scenarios
- Dew point monitoring after desiccant/adsorption dryers
- Residual moisture measurement in compressed-air networks
- Moisture monitoring in oxygen, nitrogen and argon gas lines
- Plastics industry pellet drying and process-gas quality control
- Donaldson 10 m Connection Cable for UDM515
Frequently Asked Questions
What dew point range does the UDM515 cover?
It measures from -80 to +20 Ctd, covering both very dry and moderately humid compressed-air conditions.
Which output signals are available?
A standard 4-20 mA analog output, with newer variants also providing a digital Modbus-RTU (RS-485) interface for bus networking.
Is the sensor affected by condensation?
No - the element is condensation-insensitive and protected by a sintered stainless-steel cap that blocks contaminant particles.
What pressure can it withstand?
Standard versions handle typical line pressures, with a special version rated up to 350 bar; confirm the version for your installation.
Need UDM515-Module?
Get a Quote in Minutes.
12-month warranty · No MOQ · Worldwide shipping with tracking
Request a Quote
Get the latest price, stock status and bulk order discount for UDM515-Module. Our team replies within 30 minutes (working hours).