Dew Point & Moisture
Condumax II Hydrocarbon Dew-Point Analyzer
Fully automatic, chilled-mirror hydrocarbon and water dew-point analyzer for natural gas quality.
MI
Michell Instruments Ltd.
SF82 Online Fast-Response Dew-Point Hygrometer
Fast-response 1/8 DIN hygrometer system built on the SF82 thick-film sensor.
Key Features
- Measurement range −60°C to +60°Cdp (narrower ranges available)
- Accuracy ±2°Cdp
- T95 response to −60°Cdp in under 3 minutes
- 4-20 mA or 0-20 mA output
- Modbus RTU over RS485
- Dual configurable relay alarms
- Sample block and sensor cable included
- Traceable 9-point calibration certificate
- Built-in sensor diagnostics (calibration date, health status)
Overview
The SF82 Online is a fast-response, quick-to-install hygrometer system covering −60°C to +60°C dew point. Supplied complete with a 2-wire SF82 sensor, sample block and configurable 1/8 DIN display, it targets applications needing rapid response to changing moisture conditions rather than just steady-state monitoring.
Working Principle
A 2-wire SF82 thick-film moisture sensor feeds a configurable local display/monitor. The sensor’s built-in diagnostic interface (last calibration date, health status) can be interrogated via the Michell Sensor Communications Kit. Outputs are field-configurable as 4-20 mA or 0-20 mA, Modbus RTU over RS-485, and 2 programmable relay alarms.
Applications
Benefits
- Fast-response sensor suited to dynamic dryer-cycle monitoring
- Complete out-of-the-box kit — sensor, sample block, cable and display
- Field-reconfigurable outputs via display menu, no re-wiring
- Sensor diagnostics readable in the field via communications kit
Technical Specifications
| Measurement Range | −60 to +60°C dp (−50 to +50°C / −50 to +30°C variants) |
|---|---|
| Accuracy | ±2°C dp |
| Response Time | T95 to −60°C dp in <3 minutes |
| Repeatability | 0.5°C dp |
| Calibration | Traceable 9-point certificate |
| Output Signals | 4-20 mA or 0-20 mA; Modbus RTU/RS485; dual relay alarms |
|---|---|
| Scaled Range | Dew point: −80 to +20°C |
| Supply Voltage | AC: 85–264V |
| Current Consumption | 60 mA max |
| Electrical Safety | EN61010-1 |
| Operating Temp (Sensor) | −20°C to +60°C |
|---|---|
| Operating Temp (Monitor) | 0°C to +50°C |
| Operating Pressure | 10 MPa (100 barg) max |
| Flow Rate | 1–5 Nl/min (sample block); 0–10 m/s direct insertion |
| Sensor Housing | 316 stainless steel |
|---|---|
| Ingress Protection | IP66 (MiniDIN sensor); IP65 (M12 sensor); IP65/NEMA 4X (monitor front) |
| Process Connection | 5/8" UNF, 3/4" UNF, G1/2" BSP (KF40 flange accessory) |
| Dimensions | Sensor: L=133–156mm Ø45mm; Monitor: 1/8 DIN, 96x48x85mm |
| Sensor Weight | 150 g |
Downloads
Datasheet (PDF)PDF
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 — SF82 Online Fast-Response Dew-Point Hygrometer
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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