NMO 191 Original Manufacturer Literature (English PDF)
Original precipitation collection and analysis catalogue, with product-specific specifications, construction and optional configurations.
View resource →Overview
The NMO 191 combines automatic precipitation collection with online pH, conductivity and precipitation measurements. Samples pass through a temperature-controlled measuring block, while a tipping bucket records precipitation quantity and intensity for continuous acid-rain and precipitation-chemistry monitoring.
Key features
- Continuously monitors pH, conductivity, precipitation quantity and intensity during precipitation.
- A temperature-controlled measuring block contains the conductivity cell and pH electrode.
- Standard RS 85 precipitation sensor, PE funnel and double-wall PVC housing.
- Heating provisions cover the funnel, measuring block, sample compartment and outlet.
- A tipping-bucket unit produces precipitation pulses, and an LCD meter provides local readings.
- Sample retention, snow hood, cooling and recording functions can be added for the monitoring task.
Technical specifications
| Parameter | Specification |
|---|---|
| Collection area | Approximately 500 cm² |
| pH range / resolution | 2–12; 0.01 pH |
| Conductivity range | 0–1999 µS/cm |
| Conductivity cell | Four-pole platinum electrodes with temperature measurement |
| Tipping-bucket resolution | 0.05 mm per pulse |
| Tipping-bucket calibration accuracy | ±2% at precipitation intensities up to 30 mm/h |
| Base NMO 191 supply / power | 230 VAC, 50 Hz; 320 W |
| Base NMO 191 dimensions (H × W × D) | 950 × 520 × 560 mm |
| Base NMO 191 weight | Approximately 90 kg, excluding mounting stand |
Equipment and configuration
System configuration and options
- Optional 1 × 5 L or 9 × 0.75 L sample containers and alternative container arrangements.
- Heated snow hood, sample cooling, mounting stand and dry-deposition collector are optional.
- Data logger, additional meteorological sensors and communication arrangements are selected for the application.
Applications
Acid-rain monitoring, precipitation chemistry and combined continuous water-quality and precipitation observations at environmental stations.
Selection
Specify electrodes, sample containers and recording functions. Confirm dimensions and power separately for the base unit and multi-bottle or cooled configurations.