ISCO 2150EX ATEX Area Velocity Meter (Available for Hire by the week)

  • Available for Rental Next day delivery available to mainland UK when rental paperwork is received by 12 midday (stock permitting)
  • Intrinsically Safe Approved to the ATEX Directive 94/9/EC by Baseefa, and to Class I, Division 1 by CSA for use in hazardous locations
  • Superior Probe Design Provides long term level stability, no temperature drift, no span calibration required and is field interchangeable
Product Options


This product is discontinued for purchase, but still available for hire. If you wish to purchase an ATEX Flow meter the Laserflow EX

is available to purchase.

The 2150EX ATEX-rated Area Velocity Flow Meter is built on digital electronics, so the analog level is digitized in the sensor itself. The 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.
The 2150EX flow meter is powered by two lithium or rechargeable lead acid battery packs, or by the 2194EX network interface module. The battery has a life of up to 8 months at 2 minute data storage intervals due to highly efficient power management.

Standard Features of the 2150EX

  • Rollover memory with variable rate data storage, lets you change the data storage interval when programmed conditions occur.
  • Sealed AV sensor resists fouling by oil and grease, eliminating frequent cleanings needed with electromagnetic probes.
  • Pressure transducer venting system automatically compensates for changes in atmospheric pressure to maintain accuracy
  • Rugged, submersible enclosure is permanently sealed to meet IP68 (NEMA 4X, 6P) requirements
  • High-capacity internal desiccant cartridge keeps the vent free of moisture during normal operation
  • The unit is easy to upgrade. New operating software can be downloaded into non-volatile "flash" memory via PC connection, without affecting stored program and data, and without removing the 2150EX from the hazardous area.
  • Chemically resistant. The epoxy-encapsulated sensor withstands tough applications.
  • Quick connect area velocity sensor can be easily removed and interchanged in the field with no recalibration.
  • Replaceable hydrophobic filter protects against intrusion of water during submersion.
  • Sealed AV sensor resists fouling by oil and grease, eliminating frequent cleanings needed with electromagnetic probes.
  • 38.4k baud communication provides speedy setup and data retrieval.

Manufactured by: Teledyne ISCO
Model: ISCO 2150EX ATEX Area Velocity Meter (Available for Hire by the week)

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Suitable for portable and permanent-site AV flow monitoring for inflow and infiltration, sewer overflow, and other sewer studies.
Measuring shallow flows in small pipes. The low flow profile Area Velocity sensor minimises flow stream obstruction senses velocity in flows down to 25 mm in depth.
Open channel flow measurement in Hazardous Locations (ATEX Category 1).
Suitable for level measurement in explosive or potentially explosive areas, such as digesters, manholes and storage tanks.


Isco 2150EX Intrinsically Safe Flowmeter
Size (H x W x D) 22.6 x 28.0 x 19.3 cm including battery compartment
Weight 3.0 kg (without batteries)
Material High-impact ABS
Enclosure IP68 (NEMA 4X, 6P, self-certified)
Power 7.0 to 9.0VDC, 100 mA typical at 8V DC, 1 mA standby
Batteries Lithium or rechargeable lead-acid batteries, 2 required
Program Memory Non-volatile, programmable flash; can be updated using PC without opening enclosure; retains user program after updating
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 Rate Conversions
Weirs V-notch, rectangular, Cipolletti, Isco Flow Metering Inserts, Thel-Mar;
Flumes Parshall, Palmer-Bowlus, Leopold-Lagco, trapezoidal, H, HS, HL
Manning Formula Round, U-shaped, rectangular, trapezoidal
Data Points Up to 50 level-flow rate points
Equation 2-term polynomial
Total Flow Calculations Up to 2 independent, net, positive or negative, based on either flow rate conversion
Data Storage Memory 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
Level-to-Flow Rate Conversions (continued)
Storage Mode Rollover with variable rate data storage based on level, velocity, flow rate 1, flow rate 2, total flow 1, total flow 2, or input voltage
Storage Interval 15 or 30 seconds; 1, 2, 5, 15, or 30 minutes; or 1, 2, 4, 12, or 24 hours. 5 Bytes per reading.
Setup and Data Retrieval Serial connection to IBM PC or compatible computer with Isco Flowlink 4 Software.
Baud Rate 38,400
Temperature Range -40° to 60°C operating and storage
Area Velocity Sensor
Size (H x W x L) 1.9 x 3.3 x 15.2 cm
Cable Length x Diam 7.6 m x 0.9 cm
Weight (including cable) 1.02 kg
Materials Sensor - Epoxy, chlorinated polyvinyl chloride (CPVC), stainless steel; Cable - Polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), stainless steel.
Level Measurement
Method Submerged pressure transducer mounted in the flow stream.
Transducer Type Differential linear integrated circuit pressure transducer
Range 0.010 to 3.05 m
Maximum Allowable Level 10.5 m
Accuracy ±0.003 m (maximum non-linearity, hysteresis, and temperature error from actual liquid level, from 0.03 to 3.05 m)
Long-Term Stability ±0.007 m/yr
Compensated Range 0°C to 50°C
Velocity Measurement
Method Doppler ultrasonic, Frequency 500 kHz, Transmission Angle 20° from horizontal
Typical Minimum Depth 25 mm
Range -1.5 to +6.1 m/s
Accuracy (in water, uniform velocity, speed of sound = 1480 m/s) ±0.03 m/s for velocities from -1.5 to +1.5 m/s; ±2% of reading for velocities from 1.5 to 6.1 m/s
Temperature Measurement
Accuracy ±2°C


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