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
Manufactured by: Teledyne ISCO
Model: ISCO 2150EX ATEX Area Velocity Meter
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)|
|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|
|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|
|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.|
|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.|
|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|
|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|