Hach portables samplersHach portables samplersHach portables samplersHach portables samplersHach portables samplers

Hach portables samplers

  • Hach - Sigma 900 Max
  • Unique Constant Time/ Variable Volume Sampling
  • Field Convertible for Compact or Discrete Sampling
  • Reliable Peristaltic Pump Technology
  • Advanced Liquid Detection Techniques
  • Customizable Set Points
  • Easy Data Management Software

View Quote

Can we help you?

The Hach Sigma 900MAX Portable Sampler’s advanced technology and comprehensive customer service can be summarized in five key concepts: accuracy, simplicity, flexibility, reliability, and economy.

Easy, menu-type programming uses a large backlit display. Use the Hach Sigma 900MAX sampler to monitor and log rainfall, level, flow, velocity, temperature, pH or ORP, with 12 data logging channels. Depending on model, up to seven external analog signals can also be logged. As many as 116,000 readings may be recorded.

Applications : wastewater, collections

General Specifications
Sampler Housing

Impact resistant ABS plastic,

3-section construction

Double-walled base with 1 in. (2.54 cm) insulation, direct ice contact with bottles

Set Point Sample Trigger

When equipped with integral flow meter or pH/temperature/ORP meter options, sampling can be triggered by an upset condition when field- selectable limits are exceeded.

Controller Housing

  High-Impact, injection-molded ABS;

submersible, watertight, dust-tight, corrosion, and ice resistant;

NEMA 4X, 6

Sampling Modes

Multiple bottle time, multiple bottle flow, composite time, composite flow, composite multiple bottle time, composite multiple bottle flow, flow with time override, variable interval, start/stop, and level actuation


  General Use:

0 to 49 °C (32 to 120°F)

Liquid Crystal Display (LCD):

-10 to 70°C (-14 to 158°F)


-40 to 80°C (-40 to 176°F)

Overload Protection

5 amp dc line fuse for pump; 5 amp

dc line fuse for ac power converter

Power Requirements

12 Vdc supplied by optional a/c

power converter or battery. Average current with pump running:

2.25 amps dc Certification: CSA, UL, CE

DiagnosticsTests keypad, RAM, ROM, pump, distributor, liquid sensor, and velocity signal

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 as full charge(factory installed option).

Program Languages

Czech, Danish, Dutch, English,

French, German, Spanish, Swedish

Solar Power


12 Vdc regulated supply voltage,5 watts minimum; optional 12 Vdc,lead-acid or gel-electrolyte battery backup

Program LockAccess code protection prevents tampering
Internal Battery

Two 1.5 V dc “C” cells; maintains program logic and real time clock for five years


Standard and 12 Bottle Base:

50.5 cm x 69.4 cm (10.9 x 27.3 in.)

Compact Base:

44.1 x 61 cm (17.4 x 24 in.)

Composite Base:

50.28 x 79.75 cm (19.8 x 31.4 in.)

Graphics Display

8 line x 40 character alphanumeric,back-lit liquid-crystal graphics display Self prompting/menu driven program


Standard and 12 bottle base: 15 kg (35.6 lb.) with (24) 1-L polyethylene bottles

14.8 kg (32.6 lb.) with 3-gal polyethylene container

Compact Base:

12.2 kg (27 lb.) with (24) 575-mL polyethylene bottles

12.9 kg (28.3 lb.) with 3-gal polyethylene container

Composite Base:

15 kg (36 lb.) with (12) 950-mL glass bottles

User Interface

21 key membrane switch keypad with 4 multiple function soft keys

 Data Logging 

Records program start time and date,

sample volume collected, sample volume remaining. Stores up to 400 sample collection times/dates, all program entries, operational status.

Up to 200 events logged, including alarm conditions, program run/stop events, etc.