Automatic Rinsing of Sampling Line with Clean Water

WS 316 SR Self-Rinsing Sampler

With automatic rinsing of the complete sampling line (suction hose, metering glass and distributor hose) using clean water, the WS 316 SR is the ideal sampler for heavily soiled sample media. In addition to specifying the frequency of rinsing, the components to be rinsed can also be selected.

The WS 316 SR features the same benefits as the WS 316, and in addition offers the following functions:

  • Separate drain for rinse water in sample storage chamber
  • Drain position accessed directly by XY Distributor
  • Numerous bottle combinations up to 35 x 1 l bottles; even customer-specific bottles can be used
  • Available with warm water rinsing if desired, e.g. for greasy media
  • Optional upgrade to system with automatic dosing of cleaning agent when rinsing
Abwasser-Probenehmer mit Brauchwasserspülung und Ablaufposition - Wastewater Sampler featuring automatic self-cleaning and drain outlet WS 316 SR


WaterSam controllers feature user-friendly operation and reliability. Both controller types not only enable to the activation of programs at the same time, they can be also run simultaneously.
Custom software modifications can easily made upon request.

Standardsteuerung für Probenehmer - Standard Controler for Automatic Wastewater Sampler

Standard Controller

The standard WaterSam controller is suitable for a wide variety of applications. Its 4-key user interface is easy to operate, and yet it offers the possibility of running up to 9 sampling programs at the same time. In addition, the standard controller has multiple menu levels, enabling the user to set a code that restricts access to certain menus. The 4 analog inputs and 10 digital inputs enable time-, volume-, flow-, and event-proportional sampling.
A built-in RS-232 serial port permits communication with external devices. With an optional modem, even remote control is a possibility.

Steuerung MS3 für automatischen Probenehmer - MS3 Controler for Automatic Wastewater Sampler


The WaterSam MS3 controller offers user-friendly operation in addition to a range of communications possibilities and the ability to retrieve data from internal and external sources.
Despite the wide-ranging possibilities available, sampler operation is very user-friendly thanks to the 24 keys and large graphic display. Color-coded direct function keys serve to start, pause and stop selected programs. A grab sample can be taken simply by pressing the blue key.
Intelligent sensors can be connected directly to the controller, without the need for a transmitter. If desired, a variety of data can be accessed and retrieved via a USB port.

Sampling Systems

Depending on conditions and requirements, samplers are available with diverse sampling systems:

Sample Distribution

Direct Bottle Filling with Numerous Possibilities
Our XY Distributor system has been in use successfully for nearly 20 years. Its wide array of possibilities, reliable operation and minimal follow-up costs have made it the distributor of choice among our customers. The two-axis system makes full use of the entire sample storage chamber by using coordinates to travel and locate bottle positions.

Sample Bottles:

  • 12 x 2.9  +  1 x 10 l PE
  • 15 x 2 / 2.9 l PE
  • 23 x 2 l PE
  • 24 x 1  +  1 x 12 l PE
  • 35 x 1 l PE / glass
  • 48 x 1 l PE / glass

Others upon request

The use of custom bottle combinations and/or client-specific bottles is possible

Ablauf für Probenehmer - Drain Position for Automatic Wastewater Sampler
WS 316 SR Self-Rinsing Sampler


Housing Equipment

  • Carriage with castors
  • 300 mm tall base (other heights upon request)
  • Controller panel door; with or without window
  • Drawer tray for sample containers
  • Intake hose through floor or rear wall of sampler
  • Upgrade to monitoring station
  • Interior lighting with door switch
  • Door switch for access surveillance
  • Power socket installed in housing
  • Cylinder locks for doors
  • Protection hoods for ventilation slits
  • Connection flange for hose with external air supply for refrigeration unit

Others upon request

Technical Equipment

  • Main power switch
  • Connection sockets
  • Residual-current circuit breaker
  • Various vacuum pumps
  • Data logger (for saving sampling data, monitoring data from internal measuring instruments and/or external on-line sensors)
  • Easy Handling package
  • Heavy-duty pump and valve package for corrosive media / environment
  • Heavy-duty refrigeration unit for ambient temperatures up to +55°C
  • Inlet hose heating

Others upon request


  • GSM modem for remote operation, SMS and Program start via Mobile telephone, complete access to sampler software via PC / Laptop
  • Profibus-DP
  • Signal relays (general error alarm, bottle changed, sample taken, program started, program stopped, return of power after outage)

Others upon request

Sampling Components

  • Conforming of materials for the sampling line (intake hose, sampling system, distributor hose, sample bottles) e.g.: PTFE, PVDF, FPM.
  • Metering vessels with alternative volumes (e.g. 200 / 350 / 500 / 750 / 1000 ml)
  • Numerous sample containers with a variety of capacities and materials
  • Positioning armature for intake hose
  • Filter basket

Others upon request

Technical Specifications

WS 316 SR

GeneralStationary sampler for indoor and outdoor applications; with automatic clean water rinsing
NormsCE, compliant with ISO 5667
DimensionsHxWxD: 1,290 x 665 x 720 mm
Width including mounting rails: 720 mm
WeightApprox. 90 – 125 kg, depending on equipment
Power Requirements230 V AC (optional: 110 V AC), 50 Hz (optional: 60 Hz), Main fuse 16 A
OutputApprox. 750 VA max. including high-performance cooling and heating
Ambient Temperature-25 °C to +42 °C
Optional: to -40 °C and/or +55 °C

Sampling (Standard System)

Sampling SystemVAC vacuum pump system for time-, volume-, event-proportional sampling
Sample Volume15 - 350 ml (multiple-shot sampling possible)
Optional: larger volumes, up to 1000 ml
Metering VesselDURAN 50 borosilicate glass; dishwasher-safe, resistant to acid, alkali, and temperature fluctuations
Pump PerformanceMax. 8 m lift height;
0.5 m/s up to 6 m lift heights;
14 l/min free flow
- high-performance pump (19 l/min)
- VacuPress for lift heights up to 30 m
Intake Hose12 mm ID PVC (optional: 16 mm ID)
Wetted PartsBorosilicate glass, PE, PVC, stainless steel 304/316Ti, silicone (optional: alternative materials as required)
Other SystemsSee "Sampling Systems"

Housing / Temperature Control

Housing MaterialStainless steel 304
– Stainless steel 316Ti
– Powder coating (RAL colors)
– Plastic (UV resistant)
Insulation40 mm, cold-bridge free; not foamed
Environmental ConsiderationConstruction facilitates easy separation of materials for proper recycling and disposal
PartitioningThree separate technical compartments in top dry section for electrical/electronics, refrigeration unit and other components
Placement of Sampling SystemMetering vessel in temperature-controlled sample chamber; protected from heat and frost
InstallationEasy floor mounting and firm footing with sturdy base rails
Temperature ControlPT 100 3-point thermostat
RefrigerationCompressor cooling; 230 V AC, 150 W; CFC-free refrigerant R134a; adjustable automatic defrosting (interval, time, duration, max. temperature)
Optional for corrosive environment, e.g. H2S: evaporator plate separate from sample storage chamber, clean external air drawn to cabinet via ventilation flange
HeatingElectric heating unit in stainless steel sleeve; 230 V AC, 350 W (optionally 24 V DC)
Sample StorageTemperature adjustable; pre-set to 3 °C


DistributorXY Distributor: two-axis coordinate system for direct depositing of discrete samples with no cross-contamination
Bottle SynchronizationAutomatic
Sample Bottles & SetsSee "Sample Distribution“