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Water monitoring Water samplers
Water samplers
Hach automatic water samplers are designed for a wide variety of applications which include: stormwater compliance, stormwater runoff monitoring, pretreatment compliance, CSO studies and monitoring, industrial wastewater discharge, and waste water treatment plant process control. Three different sampler versions are available; portable, refrigerated and all weather refrigerated. Each sampler version can be fitted with either the standard SD900 controller or the fully featured 900MAX controller.
All samplers use a positive displacement peristaltic pump. Flow is induced by squeezing a flexible 3/8" tube. The samplers spring loaded rollers reduce pump tubing wear and help prevent pump jams. The life time of the pump tubing is over 20,000 cycles, serving to significantly reduce sampler maintenance.
Controller Types
SD900 Controller
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The SD900 controller can be used with portable, refrigerated and all weather refrigerated versions. With its simiplified keypad with intuitive icons and scrolling menu it assures easy setup. Program setup, for first time users, is typically less than 2 minutes. Large keys accommodate gloved hands. Color coded power/stop buttons are easy to identify. The large, 5-line, transflective LED backlit display stays readable in bright or subdued lighting.
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Features
- 128 x 64 dot matrix backlit LCD, easily visible in direct sunlight
- 13-key embossed keypad includes power key, four function keys, eight navigation keys, and LED indication.
- Stores up to 255 entries in Sample History log including sample time stamp, bottle number, and status of sample (success, bottle full, rinse error, user abort, distributor error, pump fault, purge fail, sample timeout, power fail and low main battery).
- Event Log includes power on, power fail, firmware updated, pump fault, distributor arm error, low memory battery, low main battery, user on, user off, program started, program resumed, program halted, program completed, grab sample, pump tube change required.
- Sampling pacing modes include composite and discrete multiple bottle time, multiple bottle flow, single bottle time, single bottle flow, flow with time over ride, variable interval, user start/stop, and external setpoint.
- Access code protection prevents tampering of program and system setting
Hach Sigma 900MAX Controller
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For a full-fledged water management tool, nothing compares to the Sigma 900 MAX Controller. This highly advanced sampler controller features a large 8-line x 40-character backlit display that allows you to quickly select information from an easy menu-type programming format. And with 12 datalogging channels, the Sigma 900 MAX can be much more than a sampler. Its multitasking ability allows monitoring of rainfall, level, flow, velocity, temperature, pH or ORP, conductivity, and dissolved oxygen. You can also log up to seven external analog signals in the Sigma 900 MAX All Weather Sampler and up to three in the Sigma 900 MAX Portable and Refrigerated Samplers. The Sigma 900 MAX records as many as 116,000 readings on one or any combination of the 12 channels. Flash memory allows you to install software enhancements (available on the Internet) easily, without returning the sampler to the factory, so you will always have the latest monitoring technology. |
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Unique Constant Time/Variable Volume Sampling:
The Sigma 900 MAX´s unique Constant Time/Variable Volume feature varies sample size in proportion to flow rate, capturing flow-weighted samples on the first try. This new patented* method closely simulates manual grab sampling. Conventional samplers vary the intervals between samples in relation to the flow rate, while sample sizes remain constant. During low flow periods, sample intervals can increase dramatically, producing insufficient sample volumes for proper analysis. High flows cause sample containers to fill before the desired sample period ends. These conditions make capturing short-lived illicit discharges or significant storm events difficult. The Sigma 900 MAX Constant Time/Variable Volume feature takes regularly timed samples, adjusting the sample size proportionally to the flow rate. The sample volume increases and decreases with the flow, ensuring that proportional samples are taken at even intervals throughout the sampling period.
Data Management Software Makes Life Easy:
Once the Sigma 900 MAX collects your data, its powerful and user-friendly software makes it easy to analyze the data and produce presentation-quality reports.
The Data Management software´s reporting capability includes maximums, minimums, totals and averages for a day, a month or any period you choose. You can also generate customized reports integrating sample collections with flow, level, rainfall, and any number of water quality parameters such as pH, ORP, temperature, conductivity or dissolved oxygen.
Combine the Sigma 900 MAX Controller with the Sigma 1000: Wireless Remote Monitoring System and you can do your remote monitoring from the safety and comfort of your office.
Sampler Configurations
Sigma Sampler Quick Selection Table
Hach/Sigma All Weather Refrigerated sampling system
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With Hach Sigma´s All-Weather Refrigerated Sampler, spending time and money to maintain your sampler is a thing of the past. This unit is designed to last longer than any other sampler available. First, the compressor is placed on top to avoid hydrogen sulfide and other corrosive heavier-than-air gases, which attack conventional refrigerated samplers with floor-level compressors. Then, the sampler is equipped with a tough, chemically resistant coating to better protect refrigeration lines against moisture and corrosive gases. Finally, stainless steel hardware, sealed electrical connections and weather resistant cables are used to complete its corrosion-resistant design. This sampler is designed to operate anywhere - indoors or out - without a secondary enclosure. The controller compartment heater keeps pump tubing clear of ice in sub zero temperatures. Completely self-contained, the All Weather is rated for operation in temperatures from -40° to 120°F. The cabinet is linear low density polyethylene with rounded, moisture-shedding, UV-resistant surfaces. Its sidewall ventilation system allows positioning against a wall, and its sturdy locks prevent tampering. Leveling feet and anchor brackets ensure proper, secure installation. |
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Hach Sigma 900MAX AWRS Brochure
Hach Sigma 900SD AWRS Brochure
Hach Sigma Refrigerated Waste Water Samplers
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The Hach Sigma Refrigerated Waste Water Samplers is designed to endure the most humid and highly corrosive environments. Sigma´s Refrigerated Sampler features a sealed controller for maximum protection from the elements and is available with an optional stainless steel refrigerator. A NEMA 4X,6 housing isolates all electromechanical components while the keypad, switches and display are covered by a waterproof, corrosion resistant polyester membrane. The unit´s sealed connectors and pump shaft seal further guarantee the Sigma 900´s environmental integrity. Accurate Temperatures:
Refrigeration temperature is controlled by a custom-designed air-sensing thermostat. A high efficiency compressor/condenser assembly, wraparound evaporator, and rigid foam insulation ensure optimum 4°C sample temperature. The unit´s forced air blower and front ventilation provide the flexibility to position the sampler either against a wall or inside a sampler enclosure. Features
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Hach/Sigma Portable Sampler System
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The Hach/Sigma Portable Sampler sets up easily and quickly in the field. Reduced maintenance and reliable results are assured. The molded ABS/PC exterior of the SD900 controller enclosure is tough. The controller is tightly sealed to withstand humidity and hostile, corrosive environments. The NEMA 4X, 6, IP67 housing isolates all electromechanical components. The keypad, switches, and display are covered by a waterproof, corrosion-resistant polyester membrane. The sealed connectors and pump shaft seal further ensure the unit’s environmental integrity. Features
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