ISCO Signature Open Channel Flow Meter

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


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.

Manufactured by: Teledyne ISCO
Model: Signature Flow Meter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Industrial Pretreatment Compliance
Permit Enforcement
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.




Yes, the ordering process is very easy. Orders can be made via purchase order or by credit/debit card. Once we have the paperwork we can delivery next day to any location in Europe. Provided with the equipment is a quick start guide, and if you need extra support, the technical support engineers can be contacted via phone call.
No, all of our flowmeters are competitively priced and rental is an ideal option for cutting costs to a fraction of a full priced new flowmeter.
No problem. The quick start guide is designed to make installing the flow meters a simple task. Everything you require for set up will be found in the peli-box supplied with the flowmeter.
Every flow meter is tested upon shipping and return as part of our ISO9001 procedure. Also, as part of this procedure, the flow meter is calibrated once a year. If a copy of the calibration certificate is needed let us know.
The flow meters typically provide an accuracy of ±1 to 2% of rate, so if you are measuring 100l/sec then the accuracy is between 98-102l/sec.
We are here to help. If the self-help and quick start guides do not help, then call one of our technical support engineers on +44 (0) 1527 882060. We have supplied and supported many clamp on rental installations throughout Europe.
First, contact us for a quote. If you are happy with the quote then send us a purchase order. Or alternatively call us with credit card details and fill out and send us a rental agreement form.
If the stock is permitting, and all paperwork is received by 12pm then flow meters can usually be available the next day.
The minimum hire period for flow meters is one week.
Once you have the meter you can rent it for as long as you need it. However, it would help if you can let us know that you wish to extend the rental period. Upon return the meter is off-hired and once checked and tested, an invoice will be issued to you. Also, if you extend your rental past a 4, 8 or 12 week rental threshold, then you are entitled to a discount.
You are only charged for the period of time for which you have the flowmeter. So, if a flowmeter is returned 3 days late you are only charged for 3 extra days, and each of these days is charged at one fifth of the weeks hire cost.
Normally, you will use your own courier but if you have any problems let us know and we can arrange a pick up the day after you notify us, but you will be charged for the carriage and this cost will be added to the invoice.
Without exception, all our flow meters are tested. If you need a 110v plug instead of the standard 230v plug let us know.
All of our standard transducers will do -40degC to +150degC, but this will depend on your application.
  • Liquid: below 50mm CFLP transducers are required, 50-1000mm CRS-402 transducers and 150-8000mm CRS-401 transducers. All the bits you need can be supplied, and delivered with the meter.
  • Gas: below 80mm CRS-402 is required, for 80-300mm the CRS-401/CRV-310 and for above 300mm the CRW-312 transducers are required.
  • High temperatures: For liquid we can measure +450degC for liquid and for gas/steam +250degC. But please consult RS Hydro.
Of course, we make a small surcharge for each set of transducers. Most applications only require one set, but on occasion some people may require two, for more diverse pipe sizes and applications.
An ultrasonic wall thickness gauge, that measures to within 0.05mm, is provided as standard with all flow meter rental packages.
The screendump facility on the integrated dataloggers on all our flow meters, allows you to photograph any screen and download it to your pc.
After the equipment has been shipped, it is the responsibility of the hirer. However, in our experience it is rare that any of our flow meters are damaged. Our flow meters are tough, as well as accurate, and reliable.
We have hired more ultrasonic clamp on flow meters than any other company in Europe. We are now one of the world's largest distributors of GE Panametrics flow meters. We always review your application before hire so no unwanted surprises are encountered. Every effort has been made to make your flow meter hire and enjoyable experience: quick start guides to help you set up with ease, online videos for further help, rugged packaging for extra durability anywhere, and real flow engineers available for online/telephone support.