With the 900 Refrigerated Samplers, you have a choice. When you need a repeatable sample volume at a timed interval or in proportion to the flow rate, the 900 provides the simple operation and reliability that you depend on.

But other applications demand more. The 900 MAX, in addition to sampling, also monitors flow plus key parameters including pH, temperature, oxygen reduction potential, dissolved oxygen and/or conductivity. Should any parameter exceed user-defined limits, a sample may be immediately collected. And, the MAX even delivers any out-of- limits sample to one or more designated "Trouble Bottles" to help you quickly determine the problem source.

Both the 900 and 900 MAX provide results that you can count on. Samples are maintained at 4°C, while an advanced sample delivery system assures the highest sample integrity. And with a NEMA 4X, 6 controller and corrosion protected refrigerator, the 900s are your best choice for tough waste treatment environments.

• Single or Multiple Bottles.
• Highest Sample Integrity for data you can count on.
• Simple to Understand, Efficient to Use.
• Refrigerator Maintains 4°C.
• Built to last with rugged construction and a sealed controller.
• Two great choices: 900 and 900 MAX

Ideal for:

• WWTP Process Control.
• NPDES Compliance.
• Pretreatment Compliance.
• Storm Water Runoff Monitoring.
• CSO (combined sewer overflows) Monitoring.
• Regulatory Compliance Monitoring.
• Biomonitoring.
• Water Quality Research.

Model 900 Refrigerated Sampler Specifications

• Dimensions: Width 24" (61 cm), Depth 24" (61 cm), Height 44" (112 cm), Weight 140 lbs. (63 kg).
• Sample Pump:   High speed peristaltic, dual roller, with 3/8" (.95 cm) ID by 5/8" (1.6 cm) pump tube.
• Pump Body:   High impact, corrosion resistant, glass reinforced Delrin*.
• Vertical Lift:   27 ft. (8.2 m) maximum (note: Remote Pump Option recommended for lifts from 22 ft. (6.7 m) to 35 ft. (10.7 m).
• Sample Transport Velocity:   2 ft./sec. (.6 m/sec.) minimum at 15 ft. (4.6 m) vertical lift in a 3/8" (.95 cm) ID intake tube.
• Pump Flow Rate:   60 ml/sec at 3 ft. (.9 m) vertical lift in a 3/8" (.95 cm) ID intake tube.
• Liquid Sensor:   Single sensor, non-wetted, non-contact.
• Sample Volume:   Programmed in milliliters, in one ml increments from 10 to 9,999 ml.
• Sample Volume Repeatability:   ±5% typical.
• Sample Bottle Capacity:
  • Composite:  2-1/2 gal. glass, 3 gal. polyethylene, 4 gal. polyethylene, 5-1/2 gal. polyethylene, and 5-1/2 gal. polyethylene.
  • Multiple Bottle: (2) 1 gal. glass, (2) 1 gal. polyethylene, (4) 1 gal. glass, (4) 1 gal. polyethylene, (8) 950 ml glass, (8) 1.9 liter glass, (8) 2.3 liter polyethylene, (12) 950 ml glass, (24) 350 ml glass, and (24) 575 ml polyethylene and (24) 1 liter polyethylene.Sampling Modes:   Multiple Bottle Time, Multiple Bottle Flow, Composite Time, Composite Flow, Flow with Time Override, Variable Interval, Start/Stop, and Level Actuation.
• Interval Between Samples:   Selectable in single increments from 1 to 9,999 flow pulses (momentary contact closure 25 msec. or 5-12 VDC pulse), or 1 to 9,999 minutes in one minute increments. Selectable in single increments from 1 to 9,999 flow pulses (249 ohm impedance; 4-20 mA interface), or 1 to 9,999 minutes in one minute increments.
• Multiplex:   Multiple Bottle Mode:  multiple samples per bottle and/or multiple bottles per sample collection.
• Intake Purge:   Air purged automatically before and after each sample; duration automatically compensated for varying intake line lengths.
• Pump/Controller Housing:   High impact injection molded ABS; submersible, watertight, dust tight, corrosion & ice resistant; NEMA 4X,6.
• Control Panel:   18 key membrane switch keypad; 24 character alphanumeric liquid crystal display.
• Internal Clock:   Indicates real time and date; 0.007% time base accuracy.
• Diagnostics:   Tests RAM, ROM, pump, and distributor.
• Program Delay:   Sampler start at time of day or delay in minutes.
• Manual Sample:   Initiates a sample collection independent of program in progress.
• Intake Rinse:   Intake line automatically rinsed with source liquid prior to each sample, from 1 to 3 rinses.
• Intake Fault:   Sample collection cycle automatically repeated from 1 to 3 times if sample not obtained on initial attempt.
• Multiple Programs:   Stores up to five sampling programs.
• Cascade:   Allows using two samplers in combination where the first sampler at the completion of the program initiates the second.
• Data Logging:   Records program start time and date, stores up to 400 sample collection times/dates, all program entries, operational status including number of minutes or pulses to next sample, bottle number, number of samples collected, number remaining, sample volume collected, volume remaining, sample identification number.
• Status Output:   Low memory power,  plugged intake, jammed distributor arm, sample collected, and purge failure.
• Automatic Shutdown:   Multiple Bottle Mode: After complete revolution of distributor arm (unless Continuous Mode selected). Composite Mode: After preset number of samples have been delivered to composite container, from 1-999 samples, or upon full container.
• Program Lock:   Access code protection precludes tampering.
• Intake Tubing:   1/4" (.64 cm) ID vinyl.3/8" (.95 cm) ID vinyl.3/8" (.95 cm) ID Teflon* lined polyethylene with protective outer cover.
• Intake Strainers:   Teflon* and 316 stainless construction.Al 316 stainless steel in standard size and low profile for shallow depth applications.
• Power Requirements:   115 VAC, 60 Hz (230 and 100 VAC optional); Compressor Running Amperage 1.5-2.0 A.  Locked rotor current 12  Amps.
• AC Power Backup*:   (Pump/Controller Only): Rechargeable 6 Amp-hour gel lead acid battery takes over automatically with AC line power failure. Integral trickle charger maintains battery at full charge (factory installed option).
• Internal Battery:   5 year lithium battery maintains program settings and real time clock.
• Overload Protection:   Controller: 5 amp DC line fuse.  Compressor:  Thermal overload relay opens at 230ºF (110ºC).
• Refrigeration System:   1/10 HP, 75 Watt, 400 BTU/hr. compressor, 120 CFM condenser fan; 3 sided wrap-around plate type evaporator; rigid foam insulation; air sensing thermostat capable of maintaining sample liquid at 39°F (4°C) in ambient temperatures up to 120°F (49°C); accurate to ±1.5°F (0.8°C); magnetic door seal; refrigerator body is 22 gauge steel with vinyl laminate overcoating; refrigeration components and copper plumbing are corrosion protected with phenolic resin coating.
• Controller Temperature Range:   General use:  32°F to 120°F (0°C to 50°C); Liquid Crystal Display:  Operating - 14°F to 158°F (-10°C to 70°C), Storage - 40°F to 176°F (-40°C to 80°C).