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SADPmini2-Ex
Certified intrinsically safe to IECEx, ATEX, and cULus standards, our SADPmini2-Ex portable dewpoint hygrometer combines safety and performance — suitable for use in hazardous areas.
The SADPmini2-Ex advanced portable hygrometer is ideal for precise trace moisture measurement in hazardous environments and with potentially explosive gases — with logging capability and Bluetooth connectivity to our portable printer. The full-colour LCD shows multiple engineering units simultaneously, along with real-time graphing and screenshot features.
Market leading sensing technology combined with a unique desiccant head assembly ensures unparalleled speed of response and trace moisture detection. As a result, the SADPmini2-Ex offers exceptional sensitivity — accurate to ±2 °C (±3.6 °F) dewpoint — and fast, consistent operation with minimal air/gas usage.
Whatever the challenge — Alpha Moisture Systems has you covered.
- Highly customised solutions
- Trusted by industry leaders
- Distributors worldwide
- Over 30 years experience
Certified intrinsically safe for use in hazardous areas
Key features
- Robust, lightweight and portable, for efficient spot checks without operational downtime.
- Designed for durability with an IP66/NEMA4X rated body and certified intrinsically safe to IECEx, ATEX, and cULus standards.
- Ultra high-capacitance aluminium oxide sensing technology coupled with our unique desiccant head assembly for rapid and accurate trace moisture measurements, minimising gas usage.
- AutoCal span correction function to ensure optimum accuracy between laboratory calibrations.
- Select from °C or °F dewpoint and absolute values in ppm(v), ppm(w), mg/m³ or lb/MMSCF.
- Easy to use, view and set user preferences and languages. Supports English, French, German, Spanish, Italian, Portuguese, Russian, Chinese, Japanese and Korean.
- Capable of storing over 300,000 data points, with real-time graphing and quick log features for enhanced data analysis.
- Bluetooth and USB connectivity for immediate data analysis and archiving via a dedicated Android/iOS mobile app or PC.
Technical Data
General | |
| Sensor/Transmitter Type | Sensor |
| Factory Calibration | Supplied with a calibration certificate traceable to National and International Humidity standards. |
| Accessories | 2m PTFE sampling hose, pipe fittings, battery charger and cable, carrying strap, pressure dewpoint calculator |
| Documentation | Instruction manual, calibration certificate |
Sensor | |
| Sensing Element | Ultra-high capacitance aluminium oxide |
| Dewpoint Range | Overall range offered between -110 °C to +20 °C (-166 °F to +68 °F) dewpoint. -110 °C to -20 °C (-166 °F to -4 °F) dewpoint -100 °C to 0 °C (-148 °F to +32 °F) dewpoint -80 °C to +20 °C (-112 °F to +68 °F) dewpoint |
| Certification | IECEx, ATEX, and cULus |
| Approvals | CE, UKCA |
| Automatic Calibration | Span check and correction performed by following simple on-screen instructions. |
| Accuracy | ± 2 °C (±3.6 °F) dewpoint |
| Sensor Calibration | Supplied with calibration certificate traceable to National and International Humidity Standards at NPL |
| Repeatability | Better than ±0.3 °C dewpoint |
| Pressure Correction | Integral calculator to display pressure dewpoints. Gauge pressure can be entered in kPa, kg/cm², bar or psi. |
| Temperature Coefficient | Temperature compensated for operating range |
| Sample Flow Rate | Flow independent, ideally 5 - 15 L/min. Max 20 L/min |
| Response Times | Dry to wet: -100 °C to -20 °C (-148 °F to -4 °F) - Instantaneous; in less than 5 seconds Wet to dry: 0 °C to -60 °C (14 °F to -76 °F) - less than 120 seconds |
| Calibration Warranty | 12 months from date of dispatch |
Electrical | |
| Electromagnetic Compatibility (EMC) | Complies with BS EN IEC 61326-1 |
| Display | Full colour LCD graphical display with backlight, 240 x 320 resolution. |
| Display Dimensions | 3.5 inch |
| Power Supply | Rechargeable Li-ion battery (3.65 V nominal). |
| Battery Life | Excess of 150 hours |
| Charging Time | Approximately 14 hours |
| Charging | Universal mains charger via USB port |
| Resolution | 0.1 °C, 0.1 °F dewpoint or 0.1 ppm(V) |
| Repeatability | Better than ±0.2 °C dewpoint |
| Warm Up Time | 2 seconds |
| Engineering Units | °C, °F, ppm(V), ppm(w), g/m³, lb/MMSCF |
| Communications | Bluetooth connectivity via the app on a tablet/smartphone or PC/laptop (running Windows®) USB connectivity to PC/laptop running Windows®. |
| System requirement | PC/Laptop running any version of Windows®, 32 or 64-bit |
Mechanical | |
| Dimensions in mm (H x W x D) | 215 x 108 x 124 |
| Weight | 1.4 kg |
| Operating Pressure | Atmospheric pressure - Maximum 0.3 bar (4 psi) |
| Operating Humidity (External) | Maximum 95% Non-Condensing |
| Operating Temperature | -20°C to +50°C (-4°F to +122°F) |
| Storage Temperature | -20 °C to +50 °C Maximum 95% Non-Condensing |
| Sensor Protection | 316 sintered stainless steel filter - 50 micron |
| Fittings | Fir tree fitting, 0.25” (¼”), 6 mm, 0.125” (⅛”) - SS compression fitting |
| Weatherproof Classification | IP66 / NEMA 4X |
| Mechanical Warranty | 12 months in case of defective parts or faulty workmanship. |
User Tool | |
| Logging Software | User Tool |
| Data Logging | 300,000 readings. Date and time stamped data. |
| Data Location | 20 separate Location IDs can be entered (alphanumerical) for data collection at preprogrammed locations. |
| Sampling Rates | User-selectable logging intervals from five seconds to one hour and real-time data logging in graphical formats. |
| Data Display | Graphical and numerical |
| Real Time Recording | Programmed to monitor, record and graphically present data in real time directly to a PC/laptop. |
| Measurement Samples | Sample data including dewpoint, pressure-compensated dewpoint, pressure and temperature data displayed in table format. |
Downloads
What's in the box
SADPmini2-Ex Dewpoint Hygrometer
Carry Case
Charger & USB Cable with choice of UK, EU, US or AUS type plug
Calibration Certificate
User Manual
Fittings – Choose from Fir Tree, 1/4″, 6mm or 1/8″ compression
Lanyard
PTFE Sample Tube – 2m
Dewpoint Calculator
Applications
AerospacePortable dewpoint meters are crucial in the production of aeronautical parts requiring vacuum furnace heat treatment with very dry argon, and for verifying the dryness of welding shield gas at the torch head according to NADCAP standards.
Breathing AirIn diving, firefighting, and defence applications, portable dewpoint meters are used to test high-pressure cylinder breathing apparatus to prevent equipment freeze caused by excess moisture, which could have fatal consequences.
Food PackagingPortable dewpoint meters are employed to conduct rapid spot checks of trace moisture levels, helping extend the shelf life of foods by reducing waste and carbon footprint through the use of dry gas in packaging.
HDPE ProductionUtilised for spot-checking moisture in flammable gases like ethylene feedstock, portable dewpoint meters ensure safety and efficiency in the production of polyethylene to avoid decreased yields caused by excessive moisture.
Injection MouldingPortable dewpoint meters are used to verify the dryness of air circulating through plastic pellets, improving surface finish, colour, and opacity of products — increasing yields and reducing production costs.
Medical GasesEssential for ensuring the reliability and accuracy of moisture content in hospital air systems, portable dewpoint meters help conduct continuous monitoring and quarterly spot checks to prevent microbial growth and potential infection — meeting NHS HTM02 standards.
Natural Gas and LNGPortable dewpoint meters are vital for preventing freezing issues in pipelines and valves, and preserving gas calorific value by accurately measuring moisture during transit from extraction to storage.
Natural Gas TransferBy identifying moisture ingress in gas distribution networks, portable dewpoint meters ensure the reliability of domestic gas appliances by facilitating rapid problem identification and resolution.
PharmaceuticalsPortable dewpoint meters are crucial for spot checks on inert blanketing gases in medication and medical device production, preventing microbial growth and ensuring the dryness necessary for freeze-drying processes.
Power GenerationFor routine spot checks on hydrogen used in alternator cooling, portable dewpoint meters help maintain efficiency and safety by ensuring moisture is below critical levels to avoid condensation.
SF6 Circuit BreakersPortable dewpoint meters help avoid excess moisture — a potential cause of arcing which decomposes SF6 into corrosive products, taking the switch out of service and interrupting the power to the distribution network.
Speciality GasesPortable dewpoint meters facilitate accurate moisture measurements in calibration gases, minimising the valuable product expended during the test process and ensuring compliance with specifications.
Frequently Asked QuestionsIf you have a question that’s not answered below, please contact us
Can the SADPmini2-Ex be used in non-hazardous areas?
Yes, the SADPmini2-Ex is certified intrinsically safe for hazardous zones but is also fully operational in non-hazardous applications. For more details, please refer to the datasheet.
What are the available dewpoint ranges and units for the SADPmini2-Ex?
How do I connect the SADPmini2-Ex to my sample point?
At what pressure does the SADPmini2-Ex operate?
How user-friendly is the SADPmini2-Ex?
How do I download my logged data files?
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Whatever the challenge,
you can rely on Alpha
Moisture Systems
If you require a customised trace moisture measurement solution, book a consultation with our expert technical team and find out how you can increase the efficiency and productivity of your operations.
Dewpoint Calculator for Trace Moisture Measurement
in Gases & Compressed Air