NEW - Atex Zone 0 version available now!

The 2150 Flow Module combines Isco's proven area velocity flow measurement with the flexibility and versatility of a unique modular design. The 2150 is a field-configurable measurement and data storage system in a compact, sealed enclosure. The 2150 and companion 2100 Series Modules are powered by the 2191 Battery Module, which holds 2 standard alkaline or rechargeable lead-acid lantern batteries. Highly efficient power management provides battery life up to 15 months

GSM modem option

The 2150 Area Velocity sensor mounts at the bottom of the channel and uses Doppler technology to directly measure average velocity in the flow stream. An integral pressure transducer measures liquid depth to determine flow area, and flow rate is calculated by multiplying the area of the flow stream by its average velocity. Isco's Doppler system continuously senses the velocity profile of the flow stream, eliminating the manual profiling and calibration required by electromagnetic systems.

The area velocity method gives you greater accuracy where weirs and flumes are not practical, and where submerged, full pipe, surcharged and reverse flow conditions may occur. You don't have to estimate the slope and roughness of the channel, and "silt correction" compensates for debris that accumulates on the bottom of the channel.

Isco Flowlink 4 Software (v. 4.1 or higher) is used to set up 2150 Flow Modules, and to retrieve and analyze stored data.

2108 ANALOG OUTPUT MODULE FOR 2150

The 2108 Output Module provides three independent current outputs for Isco 2100 Series Area Velocity Flow modules; the 2150, 2151, and 2151P. The 2108 is DIN Rail mounted and uses a 7-26V DC power supply. It provides an easy interface from Isco’s advanced 2100 Series Area Velocity Modules to data collection systems like SCADA/DCS or any other secondary instrument systems. Standard Features Three independent, isolated outputs per module. Outputs are freely programmable for any parameter measured by Isco’s Area Velocity flow module. When more than one module is stacked, each output can be configured for any parameter for any module connected to the 2108. The 2108 Module can be mounted as far as 3,000 ft from other modules (an Isco Quick Disconnect is recommended to simplify the installation). Isco Flowlink 4.15 can interrogate any 2100 Series module through the 2108, eliminating the need for confined space entry. Specifications

• Up to one year battery life. Battery voltage readout lets you know when to change batteries.
• Sealed, submersible enclosure meets NEMA 4X, 6P and IP68 requirements
• Easy to upgrade. New operating software can be downloaded into non-volatile "flash" memory via PC connection, without affecting stored program and data.
• Measure shallow flows in small pipes. The low profile Area Velocity sensor minimizes flow stream obstruction and senses velocity in flows down to 1 inch (25 mm) in depth.
• Chemically resistant. The epoxy-encapsulated sensor withstands tough applications.
• Rollover memory with variable rate data storage, lets you change the data storage interval when programmed conditions occur.
• Pressure transducer venting system automatically compensates for changes in atmospheric pressure to maintain accuracy
• Quick connect area velocity sensor can be easily removed and interchanged in the field with no recalibration.
• High-capacity internal desiccant cartridge keeps the vent free of moisture during normal operation
• Replaceable hydrophobic filter protects against intrusion of water during submersion.
• Sealed AV sensor resists fouling by oil and grease, eliminating frequent cleanings needed withelectromagnetic probes.
• 38.4k baud communication provides speedy setup and data retrieval.
  

• 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

• 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
  

• Size (H x W x D): 2.9 x 11.3 x 7.5 in. (7.4 x 28.7 x 19.1 cm)
• Weight: 2.0 lbs. 0.9 kg
• Material: High-impact molded polystyrene
• Enclosure: NEMA 4X, 6P IP68 (self-certified)
• Power: 6.6 to 16.6V DC, 100 mA typical at 12V DC, 1 mA standby

Typical Battery Life, for given data storage interval and 2 batteries of indicated type

• 15 minute interval: 15 months (alkaline batteries); 2½ months (lead-acid batteries)
• 5 minute interval: 8 months (alkaline batteries); 1½ months (lead-acid batteries)
• 1 minute interval: 2 months (alkaline batteries); 11 days (lead-acid batteries)
• Program Memory: Non-volatile, programmable flash; can be updated using PC without opening enclosure; retains user program after updating
• Number of Modules: Up to 4, field interchangeable
  Maximum Distance Between Modules: 3300 ft (1000 m)
• Wiring Between Remote Modules: Twisted pair for communication, pair for power, gauge dependent on distance
• 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 polynominal
• 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
• 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, 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 for Windows Software.
• Baud Rate: 38,400
• Operating temperature: 0° to 140°F (-18° to 60°C)

• Storage temperature: -40° to 140°F (-40° to 60°C)

Area Velocity Sensor

• Size (H x W x L): 0.75 x 1.31 x 6.00 in. (1.9 x 3.3 x 15.2 cm)
• Cable Length: 25 ft. (7.6 m)
• Cable Diameter: 0.37 in. 0.9 cm
• Weight (including cable): 2.1 lbs. 0.95 kg
• Materials: Sensor - Epoxy, chlorinated polyvinyl chloride (CPVC), stainless steel; Cable - Polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC).

Level Measurement method:

• Submerged pressure transducer mounted in the flow stream.
• Transducer Type: Differential linear integrated circuit pressure transducer
• Range: 0.033 to 10 ft (0.010 to 3.05 m)
• Maximum Allowable Level: 20 ft. (6.1 m)
• Accuracy - non-linearity and hysteresis at 77°F (25°C) per foot of change from calibration depth, for indicated level range
  0.033 to 5.0 ft (0.03 to 1.52 m): ±0.008 ft/ft (±0.008 m/m)
  Greater than 5.0 ft (1.52 m): ±0.012 ft/ft (±0.012 m/m)
  Maximum Long-Term Drift: 0.033 ft. (0.010 m)
  Temperature Coefficient: ±0.0035 ft/°F (±0.0019 m/°C) (Max error within compensated range, per degree of change from calibration temperature.)

Velocity Measurement method:

• Method: Doppler ultrasonic, Frequency 500 kHz, Transmission Angle 20° from horizontal
• Typical Minimum Depth: 1 inch (25 mm)
• Range: -5 to +20 ft/s (-1.5 to +6.1 m/s)
• Accuracy - in water, uniform velocity, speed of sound = 1480 m/s, for indicated velocity range
  -5 to +5 ft/s (-1.5 to +1.5 m/s): ±0.1 ft./s (±0.03 m/s)
  5 to 20 ft/s (1.5 to 6.1 m/s): ±2% of reading
• Operating Temperature: 32° to 160°F (0° to 71°C)
• Compensated Range: 32° to 122°F (0° to 50°C)

2191 Battery Module

• Size (H x W x D): 6.0 x 9.6 x 7.6 in (15.2 x 24.4 x 19.3 cm)
• Weight (without batteries): 3.2 lbs (1.4 kg)
• Material: High-impact molded polystyrene
• Enclosure: NEMA 4X, 6P IP68 (self-certified)
• Batteries: 6V alkaline lantern or lead-acid lantern, quantity 2
• Capacity: Alkaline Lantern Batteries - 25 Ahrs; Lead-Acid Lantern Batteries - 5 Ahrs