Global Water - WQS Water Quality Sampling System

Global Water has created a unique water quality sampling system. This system includes an easy to use lightweight triggered composite water sampler, a water quality process controller with relay outputs, and a data recorder that is Windows compatible. The compact water quality sampler system is portable for field installation and fully customizable to meet your needs.

  • Introduction
  • Features
  • Specification
  • Documents

Water Quality Sampler System Controller

The Water Quality Sampler System Controller's LCD display shows the type of sensor that is being monitored, the data reading averaged over a user programmable time period, and the engineering units selected. The display also shows the current On or Off state for each of the process controller's 4 relays. Each of the process controller's relay is independently programmable to trigger on maximum and/or minimum threshold levels in one of five different control modes. Relay operation is defined by setting upper and lower sensor threshold levels and turning relays on when process controller sensor readings exceed a normally defined range. Visit the Water Quality Sampler System Controller page for more information.

Water Quality Sampler System Sampler

Global Water triggered Water Quality Sampler System Samplers are enclosed in rugged, rainproof, lockable carrying containers. Inside each standard water quality sampler container is a 2-gallon polyethylene waste water sample bottle for collecting composite samples, a peristaltic sampling pump, two knob control panel (No programming required) and a rechargeable gel cell battery. Other options include glass sample bottles, refrigerated containers, portable ice containers and more. Visit the WS700 Water Quality Sampler page for more information on the Water Quality Sampler System Sampler.

Water Quality Sampler Data Recorder

Global Water's Water Quality Sampler Data Recorder works with MS Windows software. The Water Quality Sampler Data Recorder monitors and logs both water quality value and time of the sample for your records. Data downloaded from the Water Quality Sampler Data Recorder can easily be opened in any PC spreadsheet program for analysis and graphic presentation. Visit the Water Quality Sampler Data Recorder page for more information.


  • Ideal for locating water quality trouble areas in wastewater, industrial, or stormwater systems
  • Easy to use interface with user selectable sensor types
  • Rugged construction for harsh environments
  • Relay outputs for alarms, sampling, or datalogging
  • Scalable water quality triggers for taking composite samples
  • Water quality sampler data recorder is Windows compatible


Composite Water Sampler
Sample Size: 15 composite sample sizes from 50ml to 2 liters plus a Full Bottle discrete setting (Approximate sizes at 4 foot head)
Operating Temperature: 32° to +158°F (0° to +70°C)

Enclosure: Expanded UV protected PVC
Bottle: 2.5 gallon Polyethylene
Pickup Hose: 15 ft (4.6 m) reinforced PVC 1/4 inch ID polyethylene flexible tubing section with intake strainer
Pump Tubing: Norprene 1/4 inch ID, 7/16 inch OD

Sample Pump:
Flow Rate: 1000 ml per minute at a 4 foot head
Type: Peristaltic
Maximum Lift: ~20 feet (6 m)

Battery: Rechargeable 5 AH Gel Cell
Battery Life: ~1 hour, continuous pumping under load
Standby: 3 months while still retaining enough power to run the pump to capacity

Water Quality Sampler System Controller

Sensor Types/Units:
Level (Feet, Inches, Meters, Centimeters, Custom),
Temperature (°F, °C, Custom),
pH (ph, Custom),
Conductivity (uS, mS, Custom),
Dissolved Oxygen (%, mbar, ppm, mg/L, Custom),
ORP (mV, Custom),
Turbidity (NTU, Custom),
Wind Speed (MPH, KPH, Ft/Sec, M/Sec, Custom),
Wind Direction (°, Custom),
Humidity (%, Custom),
Solar Radiation (W/M², Custom),
Pressure (mbar, hPa, inHg, PSI, Pa, Custom),
Custom (Custom)

Display/Keypad: 16 Character x 2 Line Backlit LCD, 8-Button Tactile Keypad
Sensor Resolution: 7 Digit Maximum, Auto-Floating point
Accuracy: Sensor Accuracy + 0.1% + 1 Digit
Analog Sensor Input: 2-Wire or 3-wire, 4-20mA, 0-5VDC, 0-1VDC
Analog Output: 4-20mA Scalable
Output Relays: 4 Independent SPDT Relays
Contact Rating: 8A @ 250VAC, 5A @ 30VDC Resistive

Voltage: 12VDC or 18-24VDC Input, +/-10%
Supply Current: 13mA + Sensor Current + Backlight + 4-20mA Output

Water Quality Sampler Data Recorder

NOTE: WQS100 does not include datalogger

Memory: Non-volatile flash memory
Power: 12VDC rechargeable battery
Standby Current: 70uA Typical
Logging Current: 5mA Typical

Analog Sensor Inputs: 4-20mA
Resolution: 12-Bit, 4096 Steps
Sensor Warm-up Time: Programmable, 0-60 Sec
WQS200: Water quality sensor + relay state + battery voltage monitor
WQS300: Water quality sensor + relay state + battery voltage monitor + 5 extra input channels

Digital Inputs:
Maximum Input Voltage: 24VDC
Maximum Frequency: 100Hz
Minimum Pulse Width: 2mS
Maximum Count: 65,535 (16-Bit)
WQS200: None
WQS300: 2

Sample Now Input: Sample-on-Demand input, software enabled (WQS300 only)
Maximum Input Voltage: 24VDC
Minimum Pulse Width: 2mS

Sample Modes:
Fixed Interval Programmable from 1 Sec. to >1 Year
High Speed 10 Samples per second
Logarithmic Sample Rate (Approximation)
Exception (Log only on deviation from previous reading)

Storage Capacity:
WQS200: 81,759 Recordings for all inputs plus time stamp
WQS300: 40,879 Recordings for all inputs plus time
Data Overwrite: Select memory wrap or unwrap (unwrap will stop logging data once memory is full)

Communication Ports:
WQS200: USB Type B connector
WQS300: RS-232 DB9 or USB Type B
Selectable Baud Rates: 9600, 19200, 28800, 38400, 57600, 115200

Clock: Synchronizes to the time and date of user's computer
Operating Temperature: Industrial, -40 to +185°F (-40 to +85°C) (Battery may not apply)

Data Logger Software

Compatible with Microsoft's Windows 98, ME, 2000, NT, XP, Vista, and 7
Windows and Excel are trademarks of the Microsoft Corporation
Tabular Display/Printout
Data in standard spreadsheet format (.CSV)
Programmable alarm start and stop times
Field calibration software and help files included


Enclosure: 22x17x9 inch (56x43x23 cm) (HxWxD)
Weight: 21.5 lb (9.75 kg)