Humidity & Pressure
DT722 Humidity & Temperature Transmitter
Stainless steel humidity and temperature transmitter for harsh environments, up to 150 °C.
DB
DABECO Co. Ltd.
DB450N In-Situ Flue Gas Humidity Analyzer for CEMS (up to 200°C)
In-situ duct-mounted flue gas humidity analyzer rated to 200°C for CEMS, eliminating the need for gas sampling and conditioning.
Key Features
- In-situ direct-insertion measurement — no gas sampling or conditioning required
- Capacitance-based humidity sensing
- Stem rated to 200°C; analyzer housing rated -10 to +50°C
- Selectable display: 4-digit or without
- Two programmable dry-contact alarm outputs
- 4-20mA analog output plus RS485 digital interface
- IP65-rated transmitter housing with 316L stainless steel stem
- DN65 standard flange duct installation
Overview
The DABECO DB450N in-situ flue gas humidity transmitter is designed to accurately measure humidity in hot, wet flue gas environments, eliminating the need for gas sampling and conditioning. This approach provides real-time, accurate humidity data for optimizing combustion processes, ensuring efficient energy use, and controlling emissions. An IP65-rated housing and 316L stainless steel stem make it suited to demanding environments with high dust concentration and some chemical pollution, including industrial furnaces, incinerators, and drying processes.
Working Principle
A capacitance-based humidity sensing element is mounted directly in the flue gas duct via a 316L stainless steel stem (direct insertion, DN65 standard flange), measuring humidity in-situ within the hot gas stream itself rather than through an extracted sample line. This eliminates sampling/conditioning delays and hardware, providing real-time volume ratio or relative humidity readings alongside programmable alarm outputs.
Applications
Benefits
- Direct in-situ insertion eliminates sample line lag and conditioning equipment, giving true real-time flue gas humidity data
- IP65 housing and 316L stem withstand high dust and chemically polluted duct environments
- Programmable alarm contacts support automated emissions and process control
- Dual output (4-20mA + RS485) integrates with both simple loops and digital CEMS platforms
Technical Specifications
| Principle | Capacitance |
|---|---|
| Range | Volume ratio 0-40% VOL or Relative humidity 0-100% RH |
| Resolution | 0.001 |
| Accuracy | <±1.5% FS |
| Repeatability | <±1% |
| Response Time (T90) | <15s |
| Type | 4-digit or without |
|---|
| Sampling Method | Direct insertion (in-situ) |
|---|---|
| Trace Heating Temperature | 50°C - 150°C |
| Stem Length | Standard 0.5m, 1.0m, 1.5m; customized up to 1.8m |
| Installation | Duct, DN65 standard flange |
| Sample Gas Requirement | No flammable gas, no highly corrosive gas |
| Analog | 4-20mA DC (non-isolated, load resistance <500Ω) |
|---|---|
| Digital | RS485 |
| Alarm | 2× programmable dry contact (passive), max 220VAC/2A |
| Analyzer Working Temperature | -10°C to +50°C |
|---|---|
| Stem Working Temperature | 0°C to 200°C |
| Supply | AC220V ±10%, 50/60Hz |
|---|---|
| Consumption | <15VA |
| Stem Protection | 316L stainless steel |
| Housing Protection | IP65 |
| Service Life | Transmitter >36 months; sensor >24 months (normal use) |
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 — DB450N In-Situ Flue Gas Humidity Analyzer for CEMS (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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