Dew Point Transmitters
DB442 Condensation-Resistant Dew Point Humidity Transmitter (up to 200°C)
Condensation-resistant dew point and humidity transmitter rated to 200°C for high-moisture industrial and climate chamber environments.
DB
DABECO Co. Ltd.
DB440 Corrosion-Proof Dew Point Transmitter for Compressed Air Systems (up to 200°C)
Corrosion-proof dew point transmitter rated to 200°C for compressed air systems and other harsh industrial environments.
Key Features
- Corrosion-proof construction for chemically aggressive environments
- Temperature rating up to 200°C (-40 to 200°C, customizable)
- Derives relative humidity, absolute humidity, volume ratio, mixing ratio, and dew point
- Cast aluminum housing with 316L stainless steel probe
- Pressure resistant to max. 6 bar
- 4-20mA analog output and RS485 digital interface
- Duct-mounted (thread/flange/clamp) or wall-mounted with extra probe installation
Overview
The DABECO DB440 transmitter is designed for fixed installation in industrial applications with conditions ranging from 0 to 100% RH and -40 to 200°C, with the probe able to survive exposure up to 200°C. Equipped with an aluminum enclosure and a 316L probe, this series is widely used in high-temperature environments for measuring relative humidity, absolute humidity, temperature, volume ratio, mixing ratio, and dew point — applied in textile printing and dyeing, shaping and drying, papermaking, drying boxes, environmental chambers, hydrogen fuel cells, and compressed air systems. The DB440 series is available in different installation modes: direct duct mounting or wall mounting with an extra probe.
Working Principle
A corrosion-resistant humidity and temperature sensing element housed in a 316L stainless steel probe is built to withstand chemically aggressive process air — such as compressed air systems — while measuring relative humidity, absolute humidity, volume ratio, mixing ratio, and dew point. Readings are transmitted via 4-20mA analog and RS485 digital outputs for duct or wall-mounted installation.
Applications
Benefits
- Corrosion-proof design suits compressed air systems and other chemically harsh process environments
- 316L probe and pressure-rated housing withstand demanding industrial conditions
- Multi-parameter output (RH, dew point, absolute humidity, etc.) supports compressed air quality and process control
- Flexible mounting (duct or wall with probe) adapts to varied installation layouts
Technical Specifications
| Humidity Range | 0-100% RH |
|---|---|
| Temperature Range | -40 to 200°C (customizable) |
| Humidity Accuracy | ±2% RH (20-80% RH @ 25°C) |
| Temperature Accuracy | ±0.2°C (@ 25°C) |
| Humidity Repeatability | ±0.2% RH |
| Temperature Repeatability | ±0.1°C |
| Response Time (Humidity) | ≤15s |
| Response Time (Temperature) | 30s |
| Analog | 4-20mA |
|---|---|
| Digital | RS485 |
| Supply | 24V DC |
|---|---|
| Current Consumption | Max 80mA |
| Electrical Connection | Terminal block |
| Transmitter Working Temperature | -40 to 70°C |
|---|---|
| Pressure Resistance | Max. 6 bar |
| Housing Material | Cast Aluminium |
| Stem Material | 304 Stainless Steel |
| Probe Material | 316L Stainless Steel |
| Installation | Duct mounted (thread/flange/clamp) or wall mounted with extra probe |
| Stem Length | 400mm standard, up to 800mm |
|---|---|
| Cable Length (wall mount) | 1m standard, up to 3m |
| Probe Length | 150mm standard; 52mm and 87mm options |
Downloads
DatasheetPDF
Frequently Asked Questions
What warranty is offered on this product?
All Tetracon-supplied instruments carry the original manufacturer warranty (typically 12–24 months) plus first-line local support from our Islamabad service centre.
Do you provide installation and commissioning?
Yes. Our manufacturer-trained engineers offer on-site installation, commissioning and startup training anywhere in Pakistan.
Are spares and calibration available locally?
Common spares are held in local stock. Calibration is available at our lab or on-site with NIST-traceable reference standards.
How long is the typical lead time?
Stocked items ship within 3–5 working days; engineered configurations typically 6–10 weeks depending on manufacturer schedule.
Request a Quote — DB440 Corrosion-Proof Dew Point Transmitter for Compressed Air Systems (up to 200°C)
Complete the form below and one of our engineers will respond within 1 working day with pricing and lead time. Prefer email? Contact our sales team.
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