2150 Area Velocity Flow Meter from Teledyne ISCO

ISCO 2150 Area Velocity Flow Meter

  • Built-In Conversions Range of conversions including flow rate, level-to-area, level-to-flow and total flow calculation
  • Range of Accessories Range of modules includes 2191 Battery Module, 2101 Field Wizard and 2102 Wireless Module
  • Non-Volatile Memory Memory capacity to store up to 79,000 readings
  • Official ISCO Distributors IN STOCK
Product Options


The ISCO 2150 area velocity flow meter features a smart area velocity probe which is built on digital electronics, so the analog level is digitized in the sensor itself to overcome electromagnetic interference.
The area velocity probe is factory calibrated for a 3 meter span at different temperatures. This calibration eliminates drift in the level signal and provides long term level stability. This reduces recalibration frequency and completely eliminates span recalibration.

In the field, the ISCO 2150 flow meter can be powered by either two alkaline, or ISCO Rechargeable lead acid batteries, within a 2191 Battery Module. The battery has a life of up to 15 months at 15 minute data storage intervals due to highly efficient power management.

Standard Features of the 2150 include:

  • 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.
  • The replaceable high-capacity internal desiccant cartridge and hydrophobic filter protect sensor reference from water entry and internal moisture.
  • Secure data storage. All data are continuously stored in flash memory to protect against loss in case of power failure
  • 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.
  • Easy to upgrade. New operating software can be downloaded into non-volatile flash memory, without affecting stored program and data.
  • Up to four 2100 Series flow modules can be networked by stacking and/or extension cables.
  • 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.
  • Secure data storage. All data are continuously stored in flash memory to protect against loss in case of power failure
  • Records and stores input voltage and temperature data.
  • 38,400 bps communications provides speedy setup and data retrieval.

Manufactured by: Teledyne ISCO
Model: ISCO 2150 Area Velocity Flow Meter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Partially filled-pipes
Open channels - uniform and non uniform
Irrigation channels
Short term flow studies
Permanent - real time telemetry


2150 Flow Module
Size (HxWxD) 2.9 x 11.3 x 7.5 in (74 x 287 x 191 mm)
Weight 2.0 lb (0.9 kg)
Materials of Construction High-impact polystyrene, stainless steel
Enclosure (self-certified) NEMA 4X, 6P (IP68)
Temperature Range -40° to 140°F (-40° to 60°C) operating and storage
Power Required 12 VDC nominal (7.0 to 16.6 VDC), 100 mA typical, 1 mA standby
Power Source Typically, an Isco 2191 Battery Module, containing 2 alkaline or 2 rechargeable lead-acid batteries. (Other power options are available; ask for details.)
Typical Battery Life (using 15-minute data storage interval) Energizer® Model 529 alkaline - 15 months; Isco rechargeable lead-acid - 2.5 months
Program Memory Non-volatile programmable flash; can be updated using PC without opening enclosure; retains user program after updating.
Built-in Conversions
Flow Rate Conversions Up to 2 independent level-to-area conversions and/or level-to-flow rate conversions.
Level-to-Area Conversions Channel Shapes - round, U-shaped, rectangular, trapezoidal, elliptical, with silt correction; Data Points - Up to 50 level-area points.
Level-to-Flow Conversions Most common weirs and flumes; Manning Formula; Data Points (up to 50 level-flow points); 2-term polynomial equation
Total Flow Calculations Up to 2 independent, net, positive or negative, based on either flow rate conversion
Data Handling and Communications
Data Storage Non-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 Types Level, velocity, flow rate 1, flow rate 2, total flow 1, total flow 2, input voltage, temperature
Storage Mode Rollover; 5 bytes per reading.
Storage Interval 15 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 Retrieval Serial 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.
Software Isco Flowlink for setup, data retrieval, editing, analysis, and reporting
Multi-module networking Up to four 2100 Series Flow Modules, stacked and/or remotely connected. Max distance between modules 3300 ft (1000 m).
Serial Communication Speed 38,400 bps
2150 Area Velocity Sensor
Size (HxWxD) 0.75 x 1.3 x 6.0 in (19 x 33 x 152 mm)
Cable (Length x Diameter) 25 ft x 0.37 in (7.6 m x 9 mm) standard. Custom lengths available on request.
Weight (including cable) 2.2 lbs (1 kg)
Materials of Construction Sensor - Epoxy, chlorinated polyvinyl chloride (CPVC), stainless steel; Cable - Polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC)
Operating Temperature 32° to 140°F (0° to 60°C)
Level Measurement
Method Submerged pressure transducer mounted in the flow stream
Transducer Type Differential linear integrated circuit pressure transducer
Range (standard) 0.033 to 10 ft (0.010 to 3.05 m); (optional) up to 30 ft (9.15 m).
Maximum Allowable Level 34 ft (10.5 m)
Accuracy ±0.01 ft from 0.033 to 10 ft, (±0.003 m from 0.01 to 3.05 m)
Long-Term Stability ±0.023 ft/yr (±0.007 m/yr)
Compensated Range 32° to 122°F (0° to 50°C)
Velocity Measurement
Method Doppler ultrasonic, frequency 500 kHz
Typical Minimum Depth 0.08 ft (25 mm)
Range -5 to +20 ft/s (-1.5 to +6.1 m/s)
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)
Temperature Measurement
Accuracy ±3.6°F (±2°C)
2191 Battery Module
Size (HxWxD) 6.0 x 9.6 x 7.6 in (152 x 244 x 193 mm)
Weight (without batteries) 3.2 lb (1.4 kg)
Materials of Construction High-impact polystyrene, stainless steel
Enclosure (self certified) NEMA 4X, 6P, (IP68)
Batteries Two 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.



Related products


Yes, the ordering process is very easy. Orders can be made via purchase order or by credit/debit card. Once we have the paperwork we can delivery next day to any location in Europe. Provided with the equipment is a quick start guide, and if you need extra support, the technical support engineers can be contacted via phone call.
No, all of our flowmeters are competitively priced and rental is an ideal option for cutting costs to a fraction of a full priced new flowmeter.
No problem. The quick start guide is designed to make installing the flow meters a simple task. Everything you require for set up will be found in the peli-box supplied with the flowmeter.
Every flow meter is tested upon shipping and return as part of our ISO9001 procedure. Also, as part of this procedure, the flow meter is calibrated once a year. If a copy of the calibration certificate is needed let us know.
The flow meters typically provide an accuracy of ±1 to 2% of rate, so if you are measuring 100l/sec then the accuracy is between 98-102l/sec.
We are here to help. If the self-help and quick start guides do not help, then call one of our technical support engineers on +44 (0) 1527 882060. We have supplied and supported many clamp on rental installations throughout Europe.
First, contact us for a quote. If you are happy with the quote then send us a purchase order. Or alternatively call us with credit card details and fill out and send us a rental agreement form.
If the stock is permitting, and all paperwork is received by 12pm then flow meters can usually be available the next day.
The minimum hire period for flow meters is one week.
Once you have the meter you can rent it for as long as you need it. However, it would help if you can let us know that you wish to extend the rental period. Upon return the meter is off-hired and once checked and tested, an invoice will be issued to you. Also, if you extend your rental past a 4, 8 or 12 week rental threshold, then you are entitled to a discount.
You are only charged for the period of time for which you have the flowmeter. So, if a flowmeter is returned 3 days late you are only charged for 3 extra days, and each of these days is charged at one fifth of the weeks hire cost.
Normally, you will use your own courier but if you have any problems let us know and we can arrange a pick up the day after you notify us, but you will be charged for the carriage and this cost will be added to the invoice.
Without exception, all our flow meters are tested. If you need a 110v plug instead of the standard 230v plug let us know.
All of our standard transducers will do -40degC to +150degC, but this will depend on your application.
  • Liquid: below 50mm CFLP transducers are required, 50-1000mm CRS-402 transducers and 150-8000mm CRS-401 transducers. All the bits you need can be supplied, and delivered with the meter.
  • Gas: below 80mm CRS-402 is required, for 80-300mm the CRS-401/CRV-310 and for above 300mm the CRW-312 transducers are required.
  • High temperatures: For liquid we can measure +450degC for liquid and for gas/steam +250degC. But please consult RS Hydro.
Of course, we make a small surcharge for each set of transducers. Most applications only require one set, but on occasion some people may require two, for more diverse pipe sizes and applications.
An ultrasonic wall thickness gauge, that measures to within 0.05mm, is provided as standard with all flow meter rental packages.
The screendump facility on the integrated dataloggers on all our flow meters, allows you to photograph any screen and download it to your pc.
After the equipment has been shipped, it is the responsibility of the hirer. However, in our experience it is rare that any of our flow meters are damaged. Our flow meters are tough, as well as accurate, and reliable.
We have hired more ultrasonic clamp on flow meters than any other company in Europe. We are now one of the world's largest distributors of GE Panametrics flow meters. We always review your application before hire so no unwanted surprises are encountered. Every effort has been made to make your flow meter hire and enjoyable experience: quick start guides to help you set up with ease, online videos for further help, rugged packaging for extra durability anywhere, and real flow engineers available for online/telephone support.