2150 Flow Module with AV sensor, 2191 Battery Module, and Handle_1162310
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2150 Flow Module with AV sensor, 2191 Battery Module, and Handle

2150 Area Velocity Sensor-
2191 Battery Module: BatteriesTwo 6-volt Energizer Model 529* alkaline (25 Ahrs capacity) or Isco Rechargeable Lead-acid (5 Ahrs capacity) recommended. *Note - Energizer 529 ER does not give specified life
2191 Battery Module: Enclosure (self certified)NEMA 4X, 6P, (IP68)
2191 Battery Module: Materials of constructionHigh-impact polystyrene, stainless steel
2191 Battery Module: Size (HxWxD)6.0 x 9.6 x 7.6 in (152 x 244 x 193 mm)
2191 Battery Module: Weight (without batteries)3.2 lb (1.4 kg)
Built-in Conversions: Flow Rate ConversionsUp to 2 independent level-to-area conversions and/or level-to-flow rate conversions
Built-in Conversions: Level-to-Area ConversionsChannel Shapes - round, U-shaped, rectangular, trapezoidal, elliptical, with silt correction; Data Points - Up to 50 level-area points
Built-in Conversions: Total Flow CalculationsUp to 2 independent, net, positive or negative, based on either flow rate conversion
Cable (Length x Diameter)33 ft x 0.37 in (10 m x 9 mm) standard. Custom lengths available on request
Data Handling and Communications: Data RetrievalSerial connection to PC or optional 2101 Field Wizard module; optional modules for spread spectrum radio; land-line or cellular modem; 1xRTT. Modbus and 4-20 mA analog available
Data Handling and Communications: Data StorageNon-volatile flash; retains stored data during program updates. Capacity 395,000 bytes (up to 79,000 readings, equal to over 270 days of level and velocity readings at 15-minute intervals, plus total flow and input voltage readings at 24-hour intervals)
Data Handling and Communications: Data TypesLevel, velocity, flow rate 1, flow rate 2, total flow 1, total flow 2, input voltage, temperature
Data Handling and Communications: Multi-module networkingUp to four 2100 Series Flow Modules, stacked and/or remotely connected. Max distance between modules 3300 ft (1000 m)
Data Handling and Communications: Serial Communication Speed38,400 bps
Data Handling and Communications: SoftwareIsco Flowlink for setup, data retrieval, editing, analysis, and reporting
Data Handling and Communications: Storage Interval15 or 30 seconds; 1, 2, 5, 15, or 30 minutes; or 1, 2, 4, 12, or 24 hours; Storage rate variable based on level, velocity, flow rate, total flow, or input voltage
Data Handling and Communications: Storage ModeRollover; 5 bytes per reading
Enclosure (self-certified)NEMA 4X, 6P (IP68)
Level Measurement: Accuracy±0.01 ft from 0.033 to 10 ft, (±0.003 m from 0.01 to 3.05 m)
Level Measurement: Compensated Range32° to 122°F (0° to 50°C)
Level Measurement: Long-Term Stability±0.023 ft/yr (±0.007 m/yr)
Level Measurement: Maximum Allowable Level34 ft (10.5 m)
Level Measurement: MethodSubmerged pressure transducer mounted in the flow stream
Level Measurement: Range(standard) 0.033 to 10 ft (0.010 to 3.05 m); (optional) up to 30 ft (9.15 m)
Level Measurement: Transducer TypeDifferential linear integrated circuit pressure transducer
MaterialHigh-impact polystyrene, Stainless steel
Materials of ConstructionSensor - Epoxy, chlorinated polyvinyl chloride (CPVC), stainless steel; Cable - Polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC)
Operating Temperature32° to 140° F (0° to 60° C)
Power Required12 VDC nominal (7.0 to 16.6 VDC), 100 mA typical, 1 mA standby
Power SourceTypically, an Isco 2191 Battery Module, containing 2 alkaline or 2 rechargeable lead-acid batteries. (Other power options are available; ask for details.)
Program MemoryNon-volatile programmable flash; can be updated using PC without opening enclosure; retains user program after updating
Size (HxWxD)2.9 x 11.3 x 7.5 in. (74 x 287 x 191 mm), 0.75 x 1.3 x 6.0 in (19 x 33 x 152 mm)
Temperature Measurement: Accuracy±3.6° F (±2° C)
Temperature Range-40° to 140° F (-40° to 60° C) operating and storage
Typical Battery Life(using 15-minute data storage interval) Energizer® Model 529 alkaline - 15 months; Isco rechargeable lead-acid - 2.5 months
Velocity Measurement: Accuracy(in water with uniform velocity profile, speed of sound = 4850 ft/s, for indicated velocity range); ±0.1 ft/s from -5 to 5 ft/s (±0.03 m/s from -1.5 to +1.5 m/s); ±2% of reading from 5 to 20 ft/s (1.5 to 6.1 m/s)
Velocity Measurement: MethodDoppler ultrasonic, frequency 500 kHz
Velocity Measurement: Range-5 to +20 ft/s (-1.5 to +6.1 m/s)
Velocity Measurement: Typical Minimum Depth0.08 ft (25 mm)
Weight​2.0 lb (0.9 kg)
Weight (including cable)​2.2 lbs (1 kg)
2100 Series Flow Modules Brochure
2150 Flow Module User Manual
Isco 2150 Area Velocity Flow Module Datasheet
ISCO 2150 Case Study
Overview

Teledyne Isco’s 2100 Series offers flexible, modular design and easy configuration for a wide range of networked open-channel flow monitoring applications, including Inflow and Infiltration studies, CMOM and AMP data collection, and river monitoring.

Compact, stackable, NEMA 4x, 6P (IP68) modules snap together to provide the capabilities needed for practically any site and monitoring requirement.

 

2150 Area Velocity Module

Continuous wave Doppler flow meter is ideal for portable flow surveys and permanent installations.

 

The 2150 Flow Module uses continuous wave Doppler technology to measure mean velocity. The sensor transmits a continuous ultrasonic wave, then measures the frequency shift of returned echoes reflected by air bubbles or particles in the flow.

The 2150’s “smart” area velocity probe is built on digital electronics, so the analog level is digitized in the sensor itself to overcome electromagnetic interference. The probe is also factory-calibrated for 10-foot (3 meter) span at different temperatures. This built-in calibration eliminates drift in the level signal, providing long-term level stability that reduces recalibration frequency and completely eliminates span recalibration.

In field use, the 2150 is typically powered either by two alkaline, or Isco Rechargeable Lead-acid batteries, within a 2191 Battery Module. Highly efficient power management extends battery life up to 15 months at 15-minute data storage intervals. Other power options (including solar) are available.

Standard Features

  • Rugged, submersible enclosure meets NEMA 4X, 6P (IP68) environmental specs. 
  • Chemically resistant epoxy-encapsulated sensor withstands abuse, resists oil and grease fouling, and eliminates the need for frequent cleaning. 
  • Replaceable high-capacity internal desiccant cartridge and hydrophobic filter protect sensor reference from water entry and internal moisture. 
  • Pressure transducer vent system automatically compensates for atmospheric pressure changes to maintain accuracy. 
  • The quick-connect sensor can be easily removed and interchanged in the field without requiring recalibration. 
  • Up to four 2100 Series flow modules can be networked by stacking and/or extension cables. 
  • Secure data storage. All data are continuously stored in flash memory to protect against loss in case of power failure 
  • Easy to upgrade. New operating software can be downloaded into non-volatile flash memory, without affecting stored program and data. 
  • Records and stores input voltage and temperature data. 
  • Variable rate data storage lets you change the data storage interval when programmed conditions occur. This feature assures maximum information about an exceptional event – such as an overflow – while conserving power and data capacity during normal conditions. 
  • 38,400 bps communication provides speedy setup and data retrieval.

Applications

  • Portable and permanent-site AV flow monitoring for inflow and infiltration, capacity assessment, sewer overflow, and sewer studies. 
  • Measures shallow flow is small pipes. Low-profile velocity sensor minimizes flow stream obstruction, and senses velocity in flows down to 1 inch (25 mm) in depth. 
  • Stack modules you need to build a compact, integrated system. 
  • Monitor multiple flow streams at the same time. 
  • Obtain redundant measurements to guarantee integrity. 
  • Remotely locate modules and connect them via cable. 
  • Expand your monitoring system as your requirements evolve.

Options and Accessories

  • 2101 Field Wizard - ruggedized keyboard and display stacks on 2100 system 
  • 2102 Wireless Module - adds 2-way spread spectrum radio communication for remote data retrieval without manhole entry 
  • 2103 Modem Module - adds telephone (land line) communication for remote data retrieval 
  • 2103c CDMA Modem Module - adds cellular communication and/or 1xRTT packet-switched data transmission (with Flowlink Pro software) 
  • 2108 Analog Output Module allows easy interface with SCADA/DCS or other secondary instrument systems

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