Flow Sampling Systems

Global Water’s Flow Sampling Package for Stream, Stormwater, Wastewater, and Industrial Flows

Global Water’s FSS Flow Sampling System is a unique water monitoring package that includes an easy to use lightweight composite/ discrete water sampler, an open channel flow monitor with dual displays and outputs, and a data recorder that is both Windows™ and Windows™ CE compatible. The FSS is a portable package that can easily be set up to take samples based on flow rates, making it ideal for stream, stormwater, wastewater, or industrial flow monitoring and recording.

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Range of Versions
We offer a range of FSS versions to help you meet your monitoring needs: the standard version (FSS-STD), which includes the sampler unit, with the flow monitor and a 9-channel serial/USB datalogger in a separate enclosure; the light version (FSSLTS), which includes the sampler and a flow monitor with a built in 2-channel serial datalogger in a separate enclosure; the integrated version (FSS-INT), which includes the sampler, a 9-channel serial/ USB datalogger, and a small flow monitor (without a totaliser display) within a single enclosure; and a custom version (FSS-C), which is fully customisable.

Rugged Composite/Discrete Water Sampler
The FSS’s composite/discrete water sampler is enclosed in a rugged rainproof enclosure, but it is lightweight enough that it can be suspended in a manhole for wastewater or stormwater sampling. The sampler includes a 2.5-gallon polyethylene sample bottle, a peristaltic sampling pump, a pick-up hose, a circuit board controller, a rechargeable gel cell battery, and a battery charger. With the unit’s water sample size control, you can take individual time-weighted composite samples or full-bottle discrete grab samples. The water sample interval control allows you set the time between individual composite samples or enable the external trigger mode for flow proportional sampling.

Accurate Open Channel Flow Monitor
The FSS’s open channel flow monitor is reliable and accurate for measuring and totalising open channel flows for all flumes and weirs, as well as any gravity-type open-channel flow. The flow monitor is pre-programmed with over 20 different flume and weir characteristics and, with the FSS-C version, we can custom program the unit for your unique application. The unit measures water depth with Global Water’s highly accurate pressure transducer and instantly calculates (for display and output) water flow and totaliser values for any depth-to-flow relationship in any engineering units (the FSS-INT version does not include a totaliser display).

Smart Flow Data Recorder
The FSS’s flow data recorder includes Windows ™-based Global Logger II software, which provides many useful features and makes accessing stored data and setting options easy. The data recorder also includes Windows™ CE-based PDA software for simple field data collection. The FSS-STD and FSS-INT feature a data recorder with 7 analogue channels, 2 pulse channels, and USB and serial communication ports. The FSS-LT features a recorder with serial communication port that monitors flow and total flow.

Rate Display: 5 digit + decimal place, LCD
Totaliser Display: 6 digit, LCD (FSS-STD and FSS-LTS only)
Accuracy Pressure Transducer: ±0.2% full scale
Flow Monitor: ±0.01% + the depth flow table error
Flow Units: cfs, gpm, m³s, mgd
Totaliser Related to flow units (FSS-STD and FSS-LTS only)

Relay Contacts Voltage: 30 VDC
Current: 5A/30 VDC
Max. Capacity: 150 W
Relay 1, Pulse Output: NPN to ground, 1.0Kohm pull-up resistor (connected to sampler) (FSS-STD and FSS-LTS)
Relay 2, Pulse Output: NPN to ground, open-collector (connected to datalogger and tied to totaliser scaler) (FSS-STD and FSS-LTS)

Analog Output: 4mA minimum, 20mA maximum (flow reading), resolution= 0.005mA
Enclosure: NEMA 4X (IP67)
Power: 12VDC rechargeable battery
FSS-INT: Uses the sampler’s 12VDC rechargeable battery 60mA DC normal, 100 mA maximum
120μA during sleep mode

Pre-Defined Tables Parshall: 1″, 2″, 3″, 6″, 9″, 12″
Palmer-Bowlus (4D): 4″, 6″, 8″, 10″, 12″, 15″
Weir: 45° V notch, 90° V notch, 1′ rectangular, 2′ rectangular H Flume: 0.4HS, 0.6HS, 0.5H, 0.75H, 1.0H, 1.5H, 2.0H Trapezoidal: 60°
Custom Table Provide Global Water with a depth-to-flow equation or look up table at time of order (allow for longer lead times)

Flow Data Recorder
Memory Non-volatile fl ash memory
Power FSS-STD and FSS-LTS: Independent 12VDC rechargeable battery
FSS-INT: Uses sampler’s 12VDC rechargeable battery
Standby Current: 70μA typical
Logging Current: 5mA typical + sensor current

Analog Sensor Inputs
Type: 4-20 mA
Resolution: 12-bit, 4096 Steps
Sensor Warm-up Time: Programmable, 0-60 sec
FSS-STD and FSS-INT: 6 input channels + flow rate + battery voltage monitor
FSS-LTS: flow rate and battery voltage monitor
Digital Inputs Maximum Input Voltage: 24VDC
Maximum Frequency: 100Hz
Minimum Pulse Width: 2mS
Maximum Count: 65,535 (16-bit)
FSS-STD and FSS-INT: Sample event + total flow
FSS-LTS: 1 input

Sample Modes Fixed interval programmable from 1 sec to >1 yr
High speed 10 samples per second
Logarithmic sample rate (approximation)
Exception (log only on deviation from previous reading)
Storage Capacity FSS-STD and FSS-INT: 40,879 recordings for all inputs plus time stamp
FSS-LTS: 81,759 recordings for all inputs plus time stamp
Data Overwrite Select memory wrap or unwrap (unwrap will stop logging once memory is full)

Communication Ports
FSS-STD and FSS-INT: RS-232 DB9 or USB Type B
FSS-LTS: RS-232 4-pin circular connector

Selectable Baud Rates 9600, 19200, 28800, 38400, 57600, 115200
Clock Synchronizes to user’s computer

Operating Temperature
Industrial, -40°C to +85°C (battery may not apply)
Enclosure Expanded UV protected PVC

Size & Weight
FSS-STD (2 enclosures)
Sampler: 56 x 43 x 23 cm, 9 kg
Flow Logger: 17 x 25 x 15 cm, 6.4 kg

FSS-LTS (2 enclosures)
Sampler: 56 x 43 x 23 cm, 20 lbs
Flow Logger: 17 x 25 x 15 cm, 5.9 kg

FSS-INT (1 enclosure)
Dimensions: 56 x 43 x 23 cm
Weight: 10 kg

Ordering Information:

Flow Sampling Systems
FSS-STD2 Standard Flow Sampling System
FSS-LTS3 Light Flow SamplingSystem
FSS-INT4 Integrated Flow SamplingSystem
FSS-C5 Custom Flow Sampling System

Accessories & Parts
PDAWL16 PDA Package
00-010 Spare 12V Gel Cell Battery
FE0400 Battery Charger
00-419 2.5-Gallon Plastic Bottle
00-8356 1-Gallon Glass Bottle
CB0200 Bottle Cap with Float Switch
CA0300 Stainless Steel Suction Strainer
00-546 Suction Hose, per foot
00-744 Peristaltic Pump Tubing,per foot



Weight 20 kg
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