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SADPmini2
A powerful portable dewpoint hygrometer ideal for precise trace moisture measurement in industrial gases and compressed air.
Our SADPmini2 advanced portable hygrometer is designed for ease of use and reliability in demanding environments, with a rechargeable lithium-ion battery giving over 150 hours of continuous operation on a single charge. The full-colour LCD shows multiple engineering units simultaneously, along with real-time graphing and screenshot features.
Market leading dewpoint sensing technology combined with a unique desiccant head assembly ensures unparalleled speed of response. As a result, the SADPmini2 offers exceptional sensitivity — accurate to ±2 °C (±3.6 °F) dewpoint — and fast, consistent operation with minimum 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
A feature-packed portable dewpoint hygrometer
Key features
- Robust, lightweight and portable, for efficient and rapid spot checks of trace moisture without operational downtime.
- Ultra high-capacitance aluminium oxide sensor coupled with a unique desiccant head assembly for rapid and accurate moisture measurements.
- 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.
- Designed for use in the toughest environments.
Technical Data
General | |
| Sensor/Transmitter Type | Sensor |
| User Interface | In ten languages: English, French, German, Spanish, Italian, Portuguese, Russian, Chinese, Japanese & Korean |
| 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 |
| Approvals | CE, UKCA, NPL traceable |
| Automatic Calibration | Span check and correction performed by following simple on-screen instructions. |
| Accuracy | ± 2 °C (±3.6 °F) dewpoint |
| Factory Calibration | Supplied with a calibration certificate traceable to National and International Humidity standards. |
| 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 |
| 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 |
| Repeatability | Sensor - Better than ±0.3 °C dewpoint |
| Sample Flow Rate | Flow independent, ideally 5 - 15 L/min. Max 20 L/min |
| 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. |
| 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 |
| Engineering Units | °C, °F, ppm(V), ppm(w), g/m³, lb/MMSCF |
| Warm Up Time | 2 seconds |
| Display Dimensions | 3.5 inch |
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/4psi |
| 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 |
| Weatherproof Classification | IP66 / NEMA 4X |
| Fittings | Fir tree fitting, 0.25” (¼”), 6 mm, 0.125” (⅛”) - SS compression fitting |
| Mechanical Warranty | 12 months in case of defective parts or faulty workmanship. |
Data | |
| Data Display | Graphical and numerical |
Downloads
What's in the box
SADPmini2 Model Hygrometer
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
Where can I purchase the SADPmini2 portable dewpoint meter?
The SADPmini2 portable dewpoint meter can be purchased directly, or from our global network of distributors. Click “Request a quote” above and fill out your details. We or one of our distributors will be in touch.
How do I download my logged data files?
How long can you leave the SADPmini2 logging and what are the logging intervals?
How long does the factory calibration last?
Can you sample gas or air in hazardous areas/zones with the SADPmini2?
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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