ISCO 3700 C Portable Automatic Sampler

  • Corrosion-Resistant Material Designed with tough field use in mind, high strength materials and NEMA 4X contoller ensures long-term durability
  • Non-Contacting Liquid Sensor Unaffected by conductivity, viscosity, temperature or liquid composition
  • Simple Maintenance No internal tubing connections enables fast and easy cleaning and tube replacement
Product Options


The Compact version of the 3700 automatic water sampler can easily be passed through an 18 inch or offset manhole. The bottle choices with the 3700C are more limited than with the full size portable model. Available options are: 24 polyethylene 500ml bottles; a single 2.5 gallon (9.5 litre) polyethylene or glass bottle; or a single 2.0 gallon (7.5 litre) ProPak bag with holder. The 3700C's bottle carrier makes bottle changes fast and easy, when using the 24 bottle configuration.

The LD90 gives automatic compensation for changes in head height, plus automatic suction line rinsing to prevent cross contamination. The LD90 features anon-contacting liquid sensor which is not affected by temperature, viscosity, conductivity or liquid composition. Cleaning and tubing replacement is fast and easy, as there are no internal tubing connections. The 3700 automatic sampler pump outperforms most competing samplers and maintains the EPA-recommended 2ft/second line velocity at head heights up to 16 feet, with ? inch suction line. The 6700 series is recommended for higher lifts.

Standard Features

  • Quick change bottle cartridge system
  • 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
    -Storm water runoff sampling
    -Split sampling
  • The 3700C Sampler Controller is housed in a NEMA 4X and 6 (IP67) environmentally sealed enclosure, and is fully interchangeable between portable and refrigerated samplers.
  • Thick foam insulation (R-11) and 16-lb. Ice capacity to preserve samples

Manufactured by: Teledyne ISCO
Model: ISCO 3700 C Portable Automatic Sampler

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Storm water monitoring
Pre-treatment compliance
CSO monitoring
Wastewater effluent
Permit compliance


3700C Compact Portable Sampler
Size (Diam x Ht) 17 x 27 inches (45 x 70.5 cm)
Weight Dry, less battery - 25 lbs (11.3 kg)
Material ABS Plastic
Power Required 12 VDC
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 PTFE/FEP 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.
Weight 11 lbs (5 kg)
Size (H x W x D) 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
Sample Frequency 1 minute to 99 hours 59 minutes, in 1 minute increments. Non-uniform times in minutes or clock times 1 to 9,999 flow pulses
Sample Pacing Uniform time, non-uniform time, flow, flow paced/time switched, STORM (time and flow paced sampling during sample collection.) Flow pacing is controlled by external flow pulses.
Multiplexing Samples per bottle (1 to 50 with 1000 ml bottles; 1 to 17 with 350 ml bottles), bottles per sample (1 to 24), multiple bottle compositing.
Sample Volumes Programmable from 10 to 9,990 ml in 1 ml increments
Sample Retries If no sample is detected, up to 3 attempts; user selectable
Rinse Cycles Automatic rinsing of suction line up to 3 rinses for each sample collection
Program Storage 3 sampling programs
Programming Modes Basic, extended and STORM
Sampling Stop/Resume Up to 24 real time/date sample stop/resume commands.
Controller Diagnostics Tests for RAM, ROM, pump display, and distributor


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