NADP approved for NTN Sites
Closed cover sealing sample collection container
Open cover resting on splash shield
Compact to minimize splash area
Prompt opening and closing of sample container
Does not “hunt” under marginal precipitation conditions
Reliable, heavy duty cover drive motor
Operates on 110VAC/220VAC or 12VDC
Plug & Play replacement parts
Responsive to light snow, drizzle or heavy fog
How it Works:
The infrared, optical precipitation sensor detects the onset of precipitation and uncovers the sample container within five (5) drops. Within two minutes, after precipitation stops, cover returns to sample container to minimize exposure to dry deposition. Sensor also detects drizzle, heavy fog or light snow, which may carry significant amounts of deposition.
Collection of uncontaminated wet deposition samples is essential to precipitation chemistry validity. Compact design minimizes splash from exterior surfaces. In areas with high wind, the sampler may be fitted with an optional Alter Screen. The compression seal on the underside of the cover prevents leakage of dry deposition in to the container and retards sample evaporation. When the cover System is opened the underside is protected from ground splash by a shield that covers, but does not contact the seal.
Reliability is essential to the collection of valid samples. The ADS/NTN runs interchangeably on either line power (110VAC or 220VAC) or (12VDC) with an optional external power converter. Cover drive is rated for 20 years of typical service. All parts are easy to replace without special tools.
The ADS/NTN is mounted on a 2” NPS pipe by a socket secured with 2 set screws, so that it may be easily rotated.
The sampler also provides a 4 conductor cable to connect to an unpowered auxiliary contact that closes during precipitation events. This contact can operate a user furnished data logger and/or event recorder pen in a Belfort Universal Raingage. System will also interface with a variety of electronic, weighing rain gages.
A normally open contact is also provided for monitoring power continuity.
Capacity: 3.5 US Gallons
Material: Rigid Polyethylene, with carrying handle
Cover: Snap-on lid with “O” ring seal
Furnished: 1 each
Type: Infra-red transmitter and receiver
Opening: Within 5 drops of onset of precipitation
Closing: Within 2 minutes of end of precipitation
OUTPUT FOR DATA LOGGER OR EVENT RECORDER:
Two unpowered, normally open contacts
1 Contact is closed for the duration of sampling event
1 contact is closed to indicate power to system is on
16” (41cm) Wide
15” (38cm) Deep (less sensor)
24” (61cm) High
Net: 36 Pounds (16 Kg)
Shipping: 55 Pounds (25Kg.)
Direct mounting on 2” NPS pipe
(2.375 Dia. 68mm Dia.)
With mounting collar and set screws
MATERIALS OF CONSTRUCTION:
Aluminum (5052H32) .125”
White polyester powder coat
Sample Container Cover:
Aluminum (5052H32) .090”
White polyester powder coat