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.

900 MAX All Weather Sampler Specifications

• Dimensions:  Width 28" (71 cm), Depth 28" (71 cm), Height 49" (125 cm), Weight 175 lbs. (79 kg).
• Cabinet:  Fiberglass reinforced plastic with beige UV inhibited polymer laminate.
• Sample Pump:  High speed peristaltic, dual roller, with 3/8" ID by 5/8 " OD Dow Corning Silastic Rx50 medical grade silicone rubber pump tube.
• Pump Tube Life Indicator: Field selectable limit provides warning to replace pump tube.
• Pump Body:  Impact/corrosion resistant, glass reinforced Delrin*.
• Vertical Lift:  27 ft. maximum (note: Remote Pump Option recommended for lifts from 22 to 35 feet).
• Sample Transport Velocity:  2 ft./sec. minimum, at 15 ft. vertical lift in a 3/8" ID intake tube.
• Pump Flow Rate:   60 ml/sec at 3 ft. vertical lift in a 3/8" ID intake line.
• 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:
  • (24) 1 liter polyethylene and/or 350 ml glass bottles.
  • (8) 2.3 liter polyethylene and/or 1.9 liter glass bottles.
  • (4) 3 gallon polyethylene and/or 2- 1/2 gallon glass bottles.
  • (2) 3 gallon polyethylene and/or 2-1/2 gallon glass bottles,
  • (1) 5-1/2 gallon polyethylene or 6 gallon polyethylene bottle.
• Sampling Modes:  Multiple Bottle Time, Multiple Bottle Flow, Composite Multiple Bottle Time, Composite Multiple Bottle Flow, Composite Time, Composite Flow, Flow with Time Override, Variable Interval, Start/Stop, and Level Actuation.  (Note:  Field selectable flow modes include variable time/constant volume and constant time/variable volume).
• Interval Between Samples:  Selectable in single increments from 1 to 9,999 flow pulses (momentary contact closure 25 msec. or 5-12 VDC pulse; 4-20 mA interface optional), or 1 to 9,999 minutes in one minute increments.
• Multiplex:  Multiple Bottle Mode: Programming allows 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:  21 key membrane switch keypad with 4 multiple function soft keys; 8 line x 40 character alphanumeric, back lit liquid crystal graphics display.  Self prompting/menu driven program.
• Internal Clock:  Indicates real time and date; 0.007% time base accuracy.
• Diagnostics:  Tests keypad, display, ROM, pump, and distributor.
• EPROM Flash Memory: Via RS232 and modem.*  Permits embedded software upgrades in the field.
• Programmable Delay:  Three formats:  (1) 1-9,999 minutes or flow pulses in one unit increments (2) programmable sampler start time/day, and (3) programmable time/day/week.
• 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 0 to 3 rinses.
• Intake Fault:  Sample collection cycle automatically repeated from 0 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, refrigerated sample temperature, and all logged data (i.e. level, flow, pH, stream temperature, refrigerated compartment temperature, ORP, rainfall, and any externally logged data - up to 3 external channels).
• Set Point Sample Trigger: When equipped with integral flow meter, pH/temperature/ORP meter, conductivity, TDS, and/or DO monitoring options ... Mode 1 - Sampling can be triggered upon an upset condition when field selectable limits are exceeded.  Mode 2 - Concurrent with normal sampling routine, sample liquid is deposited in designated "trouble bottle(s)".
• Serial Interface:  RS232 compatible; allows on-site collection of stored data.
• Status Output:  Alerts operator to low main battery, 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" and 3/8" ID vinyl or 3/8" ID Teflon* lined polyethylene with protective outer cover.
• Intake Strainers:  Choice of Teflon* and 316 stainless construction, and all 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:  Two C cell alkaline batteries; maintains program logic and real time clock for five years.  Internal battery current draws less than 40 micro amps.
• Overload Protection:  Controller: 5 amp DC line fuse.  Compressor:  Thermal overload relay opens at 230ºF (110ºC).
• Thermal System:   Top mounted compressor/condenser with fan forced air cooled condenser; 3 sided wrap-around evaporator plate; 2" rigid foam insulation; microprocessor controlled thermostat maintains sample liquid at 4°C (±1°C); frost free; non-CFC R134A refrigerant; compression gasket door seal; refrigeration components and plumbing are corrosion protected with conformal coating.
• Temperature Range:  -20°F to 122°F (-29°C to +50°C); With optional controller compartment heater,  -40°F to 122°F (-40°C to +50°C)
• Recovery Time:  With door open one minute in 75° F (24°C) ambient and 4° C sample temperature, 5 minutes.
• Pull Down Time:  From 75° F (24° C) to 39° F (4° C), 15 minutes.

SIGMA 900 MAX FACTORY INSTALLED OPTIONS

• Integral Submerged Depth/ Velocity Sensor
  • Velocity Measurement:
    • Method: Doppler ultrasonic.
    • Transducer Type: Twin 1 MHz piezoelectric Crystals.
    • Typical minimum depth for velocity: .08 in. (2 cm). Range: -5 to +20 fps (-1.52 to 6.10 m/s).
    • Zero stability: <.05 fps (.015 m/s).
    • Accuracy: ±2% of reading.
    • Operating Temperature: 0 to 140°F (-18 to 60°C).
  • Level Measurement (non-linearity and hysteresis):
    • Standard: .018 to 11.5 ft. ±.023 ft. (.005 m - 3.5 m ±.007 m).
    • Extended: .018 to 34.6 ft. ± .07 ft. (.005 - 10.5 m ± .021 m).
    • Maximum Allowable Level: 3x over pressure.
    • Operating Temperature Range: 32 to 160°F (0 to 71°C).
    • Compensated Temperature Range: 32 to 86°F (0 to 30°C).
    • Temperature Error: .018 - 11.5 ft. ±.004 ft./°F (.005 m - 3.5 m ± .0022 m/°C). .018 - 34.6 ft. ±.012 ft./°F (.018 - 10.5 m ±.006 m/°C) (maximum error within compensated temperature range - per degree of change).
    • Velocity Induced Error on Depth (patent pending): 0 to 10 ft/sec. (0 to 3.05 m/s) = .085% of reading.
    • Air Intake: Atmospheric pressure reference is desiccant protected.
    • Material: Polymer body with stainless steel diaphragm.
    • Cable: Urethane sensor cable with air vent.
    • Cable Length: 25' (7.6 m) standard. 250' (76 m) maximum.
    • Dimensions (combination sensor): .8" H x 1.5" W x 5" L (2 cm x 3.8 cm x 12.7 cm).
• Integral Ultrasonic Level Measurement
  • Level Measurement Accuracy: (at 72ºF, 22ºC, still air, 40 - 70% relative humidity) from 1 to 10 ft. +/- .01 ft. )(+/-.003 m).
  • Range:
    • Minimum distance from sensor to liquid 12 in. (23 cm).
    • Maximum distance from sensor to liquid 11 ft. (3.3 m).
  • Span: 0-10.4 ft. (0-3 m).
  • Ambient Operating Temperature Range: 0º to 140ºF (-18º to 60ºC)
  • Temperature Error: +.000047 ft/Fº (maximum error within compensated temperature range - per degree of change)
  • Resolution: .0011 ft.
  • Material: PVC housing with Buna-N acoustic window.
  • Cable: 4 conductor with integral stainless steel support cable.
  • Cable Length: 25' (7.6 m) standard.
  • Crystal Specification:
    • 40 KHz, 12º beam angle
  • Dimensions (transducer only):
    • 40 KHz, 3.75" H x 2.75" D (9.5 cm x 7 cm).
  • Weight: 1.5 lbs.
• Integral Submerged Depth Level Measurement
  • Level Measurement Accuracy: (non-linearity and hysteresis)
  • Transducer Type: Differential piezo resistive with balanced bridge.
  • Transducer Orientation: Inverted
  • Maximum Range:
    • P/N 2963 - 2.5 psi .04 - 5.75 ft. (.01 m - 1.75 m)
    • P/N 2343 - 5.0 psi .04 - 11.75 ft. (.01 m - 3.58 m)
    • P/N 2333 - 10.0 psi .04 - 23 ft. (.01 m - 7.0 m)
  • Accuracy: ±1% Full Scale
  • Maximum Allowable Level: 6x over pressure.
  • Operating Temperature Range: 32º to 160ºF (0-71ºC)
  • Compensated Temperature Range: 32º to 96ºF (0-36ºC)
  • Air Intake: Atmospheric pressure reference is desiccant protected.
  • Material: 316 stainless steel body with titanium diaphragm.
  • Cable: 4 conductor polyurethane sensor cable with air vent.
  • Cable Length: 25' (7.6 m) standard. 50' on 2333 sensor.
  • Dimensions (sensor only): 1" H x 6.75" L (2.54 cm x 17.2 cm).
  • Probe Frontal Area: 0.875 sq. in.
  • Weight: 1.5 lbs.
• Integral pH-Temperature/ORP Meter
  • Control/Logging:   Field selectable to log pH-Temperature/ORP independent of sampler operation or to control sample collection in response to value exceeding low/high set points.
  • Recording Intervals:   1, 2, 3, 5, 6, 10, 12, 15, 20, 30, and 60 minutes.
  • Probe Pre-amplifier/Junction Box:   NEMA 4X with labeled terminal strip.
  • pH-Temperature Sensor:   Temperature compensated; impact resistant ABS plastic body; combination electrode with porous Teflon* junction.
  • Measurement Range:   0 to 14 pH.
  • Operating Temperature Range:   0 to 176°F (-18° to 80°C).
  • Dimensions:   .75" (1.9 cm) dia. x 6" (15.2 cm) long with .75" (1.9 cm) mpt cable end.
  • Accuracy:   ±1%; resolution .01 pH
  • Cable Length:   25 ft. (7.6 m) or 50 ft (15.2 m).
• Integral Dissolved Oxygen/Temperature Meter
  • Control/Logging:   Field selectable to log dissolved oxygen and/or temperature independent of sampler operation or to control sample collection in response to value exceeding low/high set points.
  • Recording Intervals:   1, 2, 3, 5, 6, 10, 12, 15, 20, 30 and 60 minutes.
  • Measurement Method:   Galvanic.
  • Sensor:   Temperature compensated; impact resistant polypropylene body.
  • Range:   0-20 mg/L.
  • Resolution:   .01 mg/L.
  • Accuracy:   ±3% of reading or .1 ppm.
  • Operating Temperature Range:   32° to 122°F (0 to 50°C).
  • Dimensions:   .65" (1.7 cm) dia. x 6.25" (15.7 cm) long with .75 (1.9 cm) mpt cable end.
  • Cable Length:   25 ft. (7.6 m) or 50 ft. (15.2 m).
• Integral Conductivity/Temperature Meter
  • Control/Logging:   Field selectable to log conductivity and/or temperature independent of sampler operation or to control sample collection in response to value exceeding low/high set points.
  • Recording Intervals:   1, 2, 3, 5, 6, 10, 12, 15, 20, 30 and 60 minutes.
  • Sensor:   Temperature compensated; impact resistant polypropylene body.
  • Range:   0-40 mS/cm.
  • Resolution:   0.01 mS/cm or 1 mS/cm.
  • Accuracy:   ±2% of reading or .01 ms.
  • Operating Temperature Range:   32° to 122°F (o to 50°C).
  • Dimensions:   .67" (1.7 cm) dia. x 6" (15.2 cm) long with .75 (1.9 cm) mpt cable end.
  • Cable Length:   25 ft. (7.6 m) or 50 ft (15.2 m).
• Rain Gauge Input
  • For use with Sigma Tipping Bucket Rain Gauge; the sampling program can be initiated upon field selectable rate of rain; sampler records rainfall data.
• Analog Input Data Logging Channels
  • Three additional data logging channels record data from external source(s); field assignable channel name(s) and units; 4-20 mA.
• 4-20 mA Outputs
  • Two field assignable outputs, optically isolated, up to 600 ohm load per output each.
• Modem
  • 2400 baud with X modem, 2 byte, CRC, auto ranging with cyclic auto to checksum; FCC approved.
• Expanded Memory
  • Increases memory from 18,432 data points to 116,736 points.
• AC Power Backup
  • Provides power in the event of an AC power failure.
  • Internal trickle charger maintains 6 amp-hour battery.
  * registered E.I.Dupont