Portable Refrigerated Water Sampler [Avalanche]

The Avalanche® Sampler is based on the industry-leading 6712 controller. Avalanche provides the advanced control, data logging, and communication features of the 6712, combined with on-the-go cooling from either AC power or a 12-volt deep cycle battery. Bottle configurations include 5 gallon and 2.5 gallon composite as well as 4 x 1 gallon and 14 x 950 ml sequential. 

Like the simpler, composite-only Glacier sampler, Avalanche delivers 48 hours or more of refrigeration from a 12 volt deep cycle battery. Its power-saving cooling system remains on standby until the first sample is drawn, and then switches on to preserve the collected samples until a convenient pickup time. You can easily enter complex programs to suit your unique needs. Available routines include: pause and resume for intermittent discharge flow monitoring; sampler pacing by time, non-uniform time, flow or external event; and random interval sample collection.

 

Standard Features

• Standard and extended programming keeps setup simple when you don't need advanced features. 
• NEMA 4x, 6 (IP67) controller enclosure is watertight and dustproof. 
• SDI-12 interface provides “plug and play” connection with multi-parameter water-quality sondes and other compatible devices. 
• Standard 512kB memory gives you great flexibility for logging environmental data. 
• NEMA 4X, 6 (IP67) controller enclosure 
• Sample delivery at the EPA-recommended velocity of 2 ft/sec., even at head heights of 26 feet. 
• Patented pump revolution counter ensures accurate sample volumes - and tells you when tubing should be replaced.

 

Specification

Size (HxWxL):	30.5 x 14 x 24 inches (78 x 36 x 60 cm)
Weight:	Dry, less battery - 76 lbs (35 kg)
Power Requirements:	12 VDC, 6 Amps (supplied by external battery), OR 87 to 264 VAC, 47 to 63 Hz, 2 Amps
Cooling:	CFC-free refrigeration system maintains sample temperature at 3° C±1°C at ambient temperature of 0°C to 40°C.
Operational Temperatures:	0°C to 50°C
​Pump ​
Intake purge:	Adjustable air purge before and after each sample.
Tubing life indicator:	Provides a message to change pump tubing.
Intake suction tubing:	Length 3 to 99 ft. (1 to 30 m), Vinyl or Teflon® lined, ID 0.375 in.
Pump tubing life:	Typically 1,000,000 pump counts
Typical repeatability:	±5 ml or ±5% of the average volume in a set
Maximum lift:	28 ft. (8.5 m)
Typical line velocity @ Head height:	3.0 ft./s @ 3 ft; 2.9 ft./s @ 10 ft; 12.7 ft./s @ 15 ft. (0.91 m/s @ 0.9 m; 0.87 m/s @ 3.1 m; 0.83 m/s @ 4.6 m)
Sample presence detector:	Non-wetted, non-conductive sensor detects when liquid sample reaches the pump to automatically compensate for changes in head heights.
Controller ​
Weight:	13 lbs. (5.9 kg)
Size:	10 x 12.5 x 10 inches (26 x 32.x 25 cm)
Operational temperature:	32° to 120°F (0° to 49°C)
Enclosure rating:	NEMA 4X, 6 (IP67)
Program memory:	Non-volatile ROM
Flow meter signal input:	5 to 15 volt DC pulse or 25 millisecond isolated contact closure
External trigger:	Initiates sample collection and cooling from contact closure signal
Number of programmable composite samples:	1 to 999 samples