Sensor Holder / Sample Cell

A self-contained, portable hygrometer designed to deliver precise trace moisture measurements of gases and dry compressed air, certified intrinsically safe for hazardous applications.

Certified intrinsically safe to ATEX standards (ATEX Ex ia IIC T3/T4 Ga) and CE approved, the Model DSP-Ex is suitable for use in hazardous areas. With an accuracy of ±2 °C dewpoint and an overall range of -110 °C to +20 °C dewpoint, the DSP-Ex ensures reliable performance. The hygrometer’s unique desiccant dry-down technology provides rapid response times, making it ready for spot-check readings with minimal air or gas usage. The advanced dewSMART transmitter, utilising ultra-high capacitance aluminum oxide sensing technology, guarantees unsurpassed repeatability and measurement precision — and is fully interchangeable without returning to Alpha Moisture Systems for calibration and setup.

The DSP-Ex features a user-friendly interface and requires little to no maintenance. The digital screen offers versatile display options, allowing users to select from various moisture units, including °C, °F, ppb(v), ppm(v), ppm(w), g/m³, and lb/MMSCF. Additionally, the device includes a user-programmable parts per million (weight) function for specific gases, with pre-programmed settings for common gases like Air, Ar, H₂, SF₆, CO₂, and N₂.

A fully self-contained, portable hygrometer designed to deliver precise trace moisture measurements of gases and dry compressed air for both industrial and laboratory applications.

With an accuracy of ±2 °C dewpoint and an overall range offered between -110 °C to +20 °C dewpoint, the Model DSP-FCI ensures reliable performance. The advanced dewSMART transmitter, utilizing ultra-high capacitance aluminum oxide sensing technology, guarantees unsurpassed repeatability and measurement precision — and is fully interchangeable without returning to Alpha Moisture Systems for calibration and setup. The hygrometer’s unique desiccant dry-down technology provides rapid response times, making it ready for spot-check readings with minimal air or gas usage. An integral sample flow control valve conditions high-pressure samples before introduction to the desiccant head assembly, and a built-in flow indicator with sample-specific gradation provides flow control.

Designed for ease of use, the DSP-FCI features a user-friendly interface and requires little to no maintenance. The digital screen offers versatile display options, allowing users to select from various moisture units, including °C, °F, ppb(v), ppm(v), ppm(w), g/m³, and lb/MMSCF. Additionally, the device includes a user-programmable parts per million (weight) function for specific gases, with pre-programmed settings for common gases like Air, Ar, H₂, SF₆, CO₂, and N₂.

An easy-to-install, compact sample system for sampling trace moisture content in clean, dry natural gas — suitable for installation in hazardous areas.

Manufactured using high-quality components, the SS-NGH includes a particle filter, flow indicator, sensor/transmitter, sensor holder, sensor cable, pressure gauge and a heated pressure regulator.

A range of Alpha Moisture Systems’ displays are suitable for installation in the safe area with a Zener barrier or signal isolator. Installing a sample system for your natural gas applications will help reduce contamination levels and process pressures with the process stream in the liquid phase.

The SS-NGH is configurable so there is pressure reduction upstream of the sensor for measuring atmospheric pressure dewpoint and moisture concentration and a reduction in pressure downstream of the sensor for disposal after measuring the dewpoint at sample pressure.

Designed for reliable performance, the SS-NGH sample system ensures accurate and efficient trace moisture measurement in natural gas applications. While we can supply a standard configuration, this sample system is customizable to suit your application requirements.