Portable Water Sampler [3700]

The exclusive LD90 gives you automatic compensation for changes in head height, plus automatic suction line rinsing to prevent cross contamination. The non-contacting liquid sensor is not affected by conductivity, viscosity, temperature, or liquid composition. There are no internal tubing connections, so cleaning and tubing replacement are fast and easy. The 3700 pump outperforms most competing samplers and maintains the EPA-recommended 2 ft/second line velocity at head heights up to 16 feet, with 1/4-inch suction line. For higher lifts, we recommend our 6700 Series. 

Ample ice capacity and high-performance insulation in the base keep your samples cool. With 20 lbs of ice in the base and 4 gallons liquid collected at 65°F, the sample temperature is maintained at least 32°F below ambient for 24 hours.

 

Standard Features

• Exclusive LD90 Liquid Presence Detector and pump revolution counting system ensure accurate, repeatable sample volumes. 
• Basic and extended programming modes for: 
• Uniform time intervals 
• Non-uniform time intervals 
• Stormwater runoff sampling 
• Multiple bottle compositing
• Split sampling 
• Thick, foamed-in-place insulation and twin-wall design provide maximum performance in sample preservation. 
• 3700 Controller is housed in a NEMA 4X and 6 (IP67) environmentally sealed enclosure, and is fully interchangeable between portable and refrigerated samplers.

 

Specification

Size (Diam x Ht):	19 x 25 inches (50.5 x 64 cm)
Weight:	Dry, less battery - 37 lbs (16.8 kg)
Material:	ABS Plastic
Power required:	12 VDC
​Pump ​
Intake purge:	Adjustable air purge before and after each sample.
Tubing life indicator:	Provides a warning to change pump tubing.
Pump tubing life:	Recommended 500,000 pump counts
Intake suction tubing:	Vinyl or Teflon®; 3/8 inch (1 cm) or 1/4 inch (0.6cm) ID; 3 to 99 feet (1 to 30 m) Length
Maximum lift:	26 ft. (7.9 m)
Repeatability:	±10 ml typical
Typical line velocity @ Head height:	2.5 ft./s @ 3 ft; 2.5 ft./s @ 10 ft; 1.9 ft./s @ 15 ft. (0.76 m/s @ 0.9 m; 0.76 m/s @ 3.1 m; 0.58 m/s @ 4.6 m)
Liquid presence detector:	Non-wetted, non-conductive sensor detects when liquid sample reaches the pump to automatically compensate for changes in head heights.
Controller ​
Weight:	11 lbs (5 kg)
Size (HxWxD):	10 x 12.5 x 10 inches (25 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.
Interface port:	8 pin connector; data output at 2400 baud in ASCII. RS-232 format with handshake.
Clock accuracy:	1 minute per month, typical, for real time clock