Small Channels
ISCO Laser Flow Meter

ISCO Laser Flow Meter The LaserFlow™ remotely measures flow in open channels with non-contact Laser Doppler Velocity technology and non-contact Ultrasonic Level technology. The sensor uses advanced technology to measure velocity with a laser beam at single or multiple points below the surface of the wastewater stream. (Patent Pending) The LaserFlow is ideal for a broad range of wastewater monitoring applications. It is compatible with both the Teledyne Isco Signature® Flow Meter and the Teledyne Isco 2160 LaserFlow Module, depending on the type of installation. During submerged conditions, flow measurement continues without interruption with optional Doppler Ultrasonic Area Velocity technology. With its specially designed mounting bracket in place, the LaserFlow can be deployed and removed from above ground, eliminating unsafe and timeconsuming confined space entry. A variety of communication options enable programming and data retrieval from a remote location. Information about data quality can be recorded and transmitted alongside the flow data.

World's First Laser Flow Meter
Single & Multi-Point Velocity Measurement

Superior Accuracy and Reliability

Size (HxWxL)
38.01 x 26.21 x 56.7 cm - (14.96 x 10.3 x 22.32 in)
Non-Contact Flow Meter
Almost no maintenance, no moving parts

Portable or Permanent

8.7 kg (19.2 lbs)
Quick & Easy Installation
Can be installed from the surface.

Telemetry compatible

Conductive Carbon Filled ABS, SST, Conductive Kynar, Anodized Aluminum, UV-Rated PVC

Primary Measurement:
TIENet™LaserFlow™ Device
Size (HxWxL)
38.01 x 26.21 x 56.7 cm
(14.96 x 10.3 x 22.32 in)
8.7 kg (19.2 lbs)
Conductive Carbon Filled ABS, SST,
Conductive Kynar,
Anodized Aluminum, UV-Rated PVC
Cable Lengths
5, 10, 15, or 23 m
21CFR1040; IEC 60825-1
Laser Class
Class 3R Laser Product
Temperature Range
Operating: 0 to 60 °C (32 to 140 °F)
Storage: -40 to 60 °C (-40 to 140 °F)
Power Required
Input voltage: 8 to 26 VDC, 12VDC Nominal
Flow Accuracy
±5% of Reading. (Typical, under normal flow conditions)
Non-Contact Laser Doppler
Measurement Range
-4.6m/s to 4.6 m/s (-15 ft/s to 15 ft/s)
Maximum Depth
3m (10 ft)
±0.5% of reading ±0.03 m/s (0.1 ft/s)
Minimum Velocity
0.25 m/s (0.8 ft/s)
Non-Contact Ultrasonic
Measurement Range
0 to 3 m (0 to 10 ft) from measurement point
@ 22 °C (72 °F)
±0.006 m (0.02 ft) at less than or equal to 1 ft level change;
±0.012 m (0.04 ft) at greater than or equal to 1 ft level change
Temperature Coefficient within compensated range
± 0.0002 x D (m) per degree C
± 0.00011 x D (ft) per degree F
(Where D = Distance from transducer to liquid surface)
Beam Angle
10° (5° from center line)
Ultrasonic Signal
Optional Secondary Measurement:
TIENet™ 350 AV Sensor
Probe Size
19 x 33 x 152 mm
(0.75 x 1.3 x 6.0 in)
Sensor: Epoxy, chlorinated CPVC, SST
Cable: UV-Rated PVC
CE EN61326
Temperature Range
0 to 70 °C (32 to 158 °F)
Submerged Continuous Wave Doppler Ultrasonic
Measurement Range
-1.5 to 6.1 m/s (-5 to 20 ft/s)
Velocity Measurement
±0.03 m/s (±0.1 ft/s) from -5 to 5 ft/s
±2% of reading from 5 to 20 ft/s,
Uniform velocity profile
Minimum Depth
25 mm (0.08 ft)
500 kHz
Submerged Differential Linear Pressure Transducer
Measurement Range
0.01 to 3.05 m (0.033 to 10 ft)
± 0.01%FS
Maximum Depth
10.5 m (34 ft)
±0.007 m/yr (±0.023 ft/yr)
a. Turbidity > 20 NTU; Distance from liquid surface to bottom of sensor < 48 inches.
b. Maximum non-linearity, hysteresis, & temperature error from actual liquid level.

Signature Flow Meter

Signature Flow Meter The new Isco Signature flow meter is designed for open channel flow monitoring applications. It supports flow measurement technologies including ultrasonic and bubbler. Flow can be calculated using standard open channel level-to-flow conversions, level to flow data points as well as user-defined equations, depending on the needs of the application.

Unique features provided by the Signature flow meter help to verify data integrity. It logs key events such as power outages and changes in calibration to validate data accuracy. Stored data can be easily reviewed to detect any type of data alteration.

Unique Data Verification
Logs changes in calibration and power outages to validate data accuracy

Size (HxWxL)
8.88 x 12.22 x 8.22 in. (with mounting bracket)
Flow Measurement Technology
Supports flow measurement technologies including bubbler and ultrasonic

PPO Polyphenylene Oxide

Size (HxWxD)
8.88 x 12.22 x 8.22 in. (with mounting bracket)
Materials of Construction
PPO Polyphenylene Oxide

Enclosure (self-certified)

Power Required
100 to 240 VAC 50/60 Hz
Cable Entry
Standard: 3/4" NPT conduit
Optional: 3/4" NPT cord grips
Flow Measurement Technologies
Ultrasonic (TIENet 310)
Bubbler (TIENet 330)
Two SDI-12
pH Measurement (TIENet 301)
Front Panel Keypad, Flowlink Software - with serial USB, remote cellular, or Ethernet
Flow Conversions
Weir, Flume, British Flume, Metering Insert, Manning Formula, Equation, Level to Flow Data Points
Data Storage
Non-volatile flash; retains stored data during program updates.
Capacity: 512 KB
Interval: 15 or 30 seconds; 1, 2, 5, 15, or 30 minutes; or 1, 2, 4, 12, or 24 hours
Capacity: 180 days with 5 parameters logged at 1 minute intervals, reports once per day
Data Retrieval
USB drive
Flowlink Software - with serial USB, remote cellular, or Ethernet
Analog (TIENet 308)
SMS Alarm
Sampler Interface
TIENet 306
Communication Options
CDMA or GSM cellular,
Temperature Range: Operating and Storage
-20 to 60°C
(-4 to 140°F)

TIENet™ 301 pH/Temperature Device
Weight (w/o probe)
w/ 10m cable: 3.5 lb
w/ 23m cable: 7.5 lb
Ambient Operating Temperature
-20 to 50°C (-4 to 122°F)

pH Measurement Range
0 - 14 pH units

Temperature Compensation
Performed by the 301 device

pH Accuracy
±0.1 pH units (new probe, freshly calibrated w/in range)
Probe Dimensions
1.12" Ø X 6" long, 3/4 NPT; Cable 25ft
Probe Body Material
pH Electrode Junction
Double porous

Temperature Measurement Range
0 to 80 °C (32 to 176 °F)

TIENet™ Model 306 Sampler Interface
Flow pacing, enabling based on triggered event. Time and bottle information sent to Signature Flow Meter
Powered By
Signature Flow Meter
Operating Temperature
-20 to 50°C (-4 to 122°F)

Storage Temperature
-40 to 60°C (-40 to 140°F)
Pulse Width
50 ms
Pulse Output
5 volts
Sampler Connection
Standard: 6 pin connector for Isco 6712, Avalanche, Glacier, GLS, and 3700 samplers
For other options, contact factory
TIENet™ Model 308 Analog Output
4-20 mA
Maximum Load
500 ohm
Outputs per card
TIENet™ Model 310 Ultrasonic Level Sensor
Level Measurement Range
0.3 to 3.3m (1 to 11 ft)

Measurement Accuracy at 72°F (22°C)
±0.006m (0.02 ft) at 1 ft level change or less
±0.009m (0.03 ft) at greater than 1 ft level change

Temperature Coefficient(w/ in compensated range)
±0.0002 x Distance (m) x Temperature Deviation from 22 °C.
±0.00011 x Distance (ft) x Temperature Deviation from 72 °F.
Beam Angle
50 kHz
9.1 cm Ø X 10.2 cm tall (3.63" x 4")
Cable Length
10 or 23m (32.8 or 75.5 ft)
1.8 kg (4 lbs)
Body Material
Temperature Range (Operating & Storage)
-30° to 60°C (-22° to 140°F)

Group 2, Category 1G (zone 0), T4
Class I, Div 1, Groups C & D, T4 (pending)
TIENet™ 330 Bubbler Module
Level Measurement Range
0.003 to 3.05m
(0.01 to 10 ft)
Level Measurement Accuracy
+0.002m @ 22°C
(0.007 ft @ 72°F)
Operating and storage temperature
-18° to 60°C
(0 to 140°F)
Temperature Compensation Range
0° to 60°C
(32° to 140°F)
Temperature Coefficient (w/ in compensated range)
±0.0003 x Level (m) x Temperature Deviation from 22 °C.
±0. 00017 x Level (ft) x Temperature Deviation from 72 °F.

ISCO 2150 Area Velocity Flow Meter

ISCO 2150 Area Velocity Flow Meter
ISCO 2150 Area Velocity Flow Meter
ISCO 2150 Area Velocity Flow Meter
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.

Built-In Conversions
Range of conversions including flow rate, level-to-area, level-to-flow and total flow calculation Measurement.
Size (HxWxD)
2.9 x 11.3 x 7.5 in (74 x 287 x 191 mm)
Range of Accessories
Range of modules includes 2191 Battery Module, 2101 Field Wizard and 2102 Wireless Module.

2.0 lb (0.9 kg)
Non-Volatile Memory
Memory capacity to store up to 79,000 readings.

High-impact polystyrene, stainless steel

2150 Flow Module
Size (HxWxD)
2.9 x 11.3 x 7.5 in (74 x 287 x 191 mm)
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.
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