Signature Flow Meter

  • Unique Data Verification Logs changes in calibration and power outages to validate data accuracy
  • Flow Measurement Technology Supports flow measurement technologies including bubbler and ultrasonic
Product Options


Signture 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.


The Isco Model 310 Ultrasonic Level Sensor, 330 Bubbler Module, 350 Velocity Sensor and 360 LaserFlow™ Velocity Sensor are now MCERTS certified meeting the Environment Agency's performance requirements. View downloads for certificate.

Options and Accessories

TIENet 310 Ex Ultrasonic Level Sensor

The Signature® Flow Meter uses the TIENet 310 Ex Device to provide non-contact liquid level measurement. The flow meter has built-in level-to-flow conversions that cover the majority of open channel flow measurement situations. The ultrasonic sensor is mounted over the flow stream. The flow meter measures the time interval between transmission of a sound pulse from the sensor, and receiving its echo off the surface of the liquid, to determine the level of the stream.

TIENet 330 Bubbler module

The Signature® Flowmeter is designed for open channel flow monitoring applications using any combination of flow and parameter measurement technologies and sampling, depending on what is required at the measurement site. The bubbler level sensor can be used in almost any open channel flow application and performance is unaffected by steam or foam on the surface of the water. The bubble line is anchored in the flow stream at the appropriate measuring point in the weir, flume, or other open channel flow situation. The pressure in the bubble line is proportional to the liquid level in the flow stream sensing the liquid level.

TIENet 350 Area Velocity Sensor

The Teledyne Isco TIENet 350 Area Velocity Sensor measures flow stream average area velocity and liquid level. The Signature® Flow Meter uses this information to calculate the flow rate and total flow of the stream. To operate with the 350 sensor, the Signature requires software version 1.18 or later. The 350 sensor is mounted in the flow stream, normally at the bottom of the channel. It measures average velocity using continuous ultrasonic sound waves to produce a Doppler effect, in which the frequency of a wave (such as sound) passed between two bodies is relative to the motion of each. As they move nearer to each other, the frequency increases; as they move apart, the frequency decreases. The 350 sensor measures liquid level using an internal differential pressure transducer.

TIENet 360 LaserFlow Non-contacting Area Velocity Sensor

TIENet 360 LaserFlow Non-contacting Area Velocity Sensoriew the LaserFlow HERE

Manufactured by: Teledyne ISCO
Model: Signature Flow Meter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Industrial Pretreatment Compliance
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Wastewater Treatment Plants


Size (HxWxD) 8.88 x 12.22 x 8.22 in. (with mounting bracket)
Materials of Construction PPO Polyphenylene Oxide
Enclosure (self-certified) NEMA 4X/IP66
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)
Inputs Two SDI-12
pH Measurement (TIENet 301)
Setup 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, Ethernet
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 316SST
pH Electrode Junction Double porous
Temperature Measurement Range 0 to 80 °C (32 to 176 °F)
TIENet™ Model 306 Sampler Interface
Function 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
Output 4-20 mA
Isolation Monolithic
Maximum Load 500 ohm
Outputs per card Two
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 10°
Frequency 50 kHz
Size 9.1 cm Ø X 10.2 cm tall (3.63" x 4")
Cable Length 10 or 23m (32.8 or 75.5 ft)
Weight 1.8 kg (4 lbs)
Body Material PVDF
Temperature Range
(Operating & Storage)
-30° to 60°C (-22° to 140°F)
Certifications 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
-18° to 60°C (0 to 140°F)
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.