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SIGMA is a US manufacturer that specializes in AV Flowmeters, Samplers, and Rain 
Gauge instrument. In 1997, Sigma became part of the Hach Company family.

MARSH-MCBIRNEY is a US manufacturer that specializes in Open Channel Flowmeters. For over 35 years, Marsh- McBirney has provided innovative and award winning open channel flowmeters designed for both portable (short-term) and permanent (long-term) flow monitoring applications. In 2006, Marsh- McBirney became part of the Hach Company family.




HANDHELD FLOW METER

HACH FH950


HANDHELD FLOW METER



AV SENSOR

FLO-TOTE® 3


AV SENSOR



AV SENSOR with optional SURCHARGE VELOCITY SENSOR

FLO-DAR®


AV SENSOR with optional SURCHARGE VELOCITY SENSOR



Flow Monitor

Flo-Station


Flow Monitor



Universal Controller

Hach sc200


Universal Controller



Flow Logger

Hach FL900 Series


Flow Logger



AV Sensor

Sigma Submerged


AV Sensor



Flow Meter

Hach FL900AV


Flow Meter



Flow Meter

Sigma 950


Flow Meter



with Bubbler

Sigma Submerged - AV SENSOR


with Bubbler



Velocity Sensor

Sigma Low Profile


Velocity Sensor



Ultrasonic Sensors

Hach US9000


Ultrasonic Sensors



Compatible with Sigma 950 Flow Meter

Sigma Ultrasonic Sensors


Compatible with Sigma 950 Flow Meter



Level Sensor

Sigma Bubbler


Level Sensor



Level Sensor

Sigma Pressure


Level Sensor



Rain Gauge

Sigma


Rain Gauge



 
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