NSA 181 Basic Original Manufacturer Literature (English PDF)
Original precipitation collection and analysis catalogue, with product-specific specifications, construction and optional configurations.
View resource →Overview
The NSA 181 Basic uses a precipitation sensor to operate the collection funnel cover automatically, exposing the funnel only during precipitation. An insulated double-wall PVC housing, heating and ventilation support sampling for inorganic and acidifying constituents; alternative contact materials allow organic or mercury analysis.
Key features
- A 500 cm² collection funnel with automatic cover control by the standard RS 85 sensor.
- White, insulated double-wall PVC housing helps limit external temperature effects on samples.
- Automatic heating at 0 °C and below, with ventilation starting around 25 °C.
- Standard sample-contact materials can be replaced with DURAN glass and PTFE for organic or mercury sampling.
- Single-bottle, two-bottle and sequential multi-bottle arrangements suit different sampling intervals and volumes.
- Options include a heated snow hood, sample cooling, data logging and a separate dry-deposition collector.
Technical specifications
| Parameter | Specification |
|---|---|
| Collection area | 500 cm² |
| Standard precipitation sensor | RS 85 |
| Housing | White, insulated double-wall PVC |
| Standard sample-contact materials | Silicone and HDPE |
| Container configuration range | 16 × 0.25 L to 2 × 10 L, depending on configuration |
| Automatic heating | At 0 °C and below |
| Ventilation control | Starting around 25 °C |
| Organic / mercury sampling | Optional DURAN glass and PTFE contact materials |
Model and configuration differences
| Configuration | Sampling arrangement | Typical requirement |
|---|---|---|
| Single bottle | One container per sampling period | Bulk sample or longer collection interval |
| Two bottles | Two sample containers | Separated sampling periods or increased capacity |
| Multiple bottles | Container exchange by time or control condition | Continuous monitoring and sequential sampling |
Equipment and configuration
System configuration and options
- Snow hood, sample cooling, data logger and mounting stand are selected separately.
- Bottle number, volume and automatic bottle exchange depend on the selected arrangement.
- Choose suitable contact materials for organic or mercury analysis; the separate DSC dry collector is optional.
Applications
Precipitation chemistry, acid deposition and environmental monitoring stations. Contact materials determine suitability for inorganic, organic or mercury analysis.
Selection
Choose a single-, two- or multi-bottle arrangement to suit sampling intervals, then specify bottle materials, snow hood, cooling and data logging.