2" Flow Sensor FS200

Neptune Systems FS-200 Flow Sensor – 2"

Know Your Flow. Track High-Volume Water Movement Accurately.

Overview

The FS-200 Flow Sensor is Neptune Systems’ largest flow monitoring sensor, built for use with the FMM (Fluid Monitoring Module) and suited to very high-flow aquarium systems. Designed for integration into 2" slip PVC plumbing, it accurately measures flow rates up to 11,356 litres per hour (3000 GPH).

Ideal for large return pumps, commercial setups, or high-capacity filtration systems, the FS-200 delivers reliable real-time data to Apex Fusion, helping you identify performance changes, diagnose issues early, and maintain optimal system function.

Requires Neptune Systems FMM Module and Apex Controller (A2 or A3 Series).

Key Features

• Monitors flow from 1,136 – 11,356 L/h (300 – 3000 GPH)

• Connects to standard 2" slip PVC plumbing

• Includes BSPP-threaded sensor body with 2x PVC union adapters

• Plug-and-play compatible with Neptune FMM Module

• Enables real-time flow tracking and alerts via Apex Fusion

• Ideal for large systems, external pumps, or commercial reef tanks

Use Cases

• Measure flow from high-capacity return pumps

• Track performance in external closed loops

• Detect flow drops caused by clogs or pump failure

• Use data to trigger Apex alarms and automate maintenance tasks

Plumbing Compatibility

The FS-200 uses British Standard Parallel Pipe (BSPP) threads and includes:

• 2x BSPP to 2" Slip PVC union adapters
  These unions allow integration with standard Australian 2" PVC pipe, providing a secure and watertight connection in high-flow environments.

Specifications

• Flow Range: 1,136 – 11,356 L/h (300 – 3000 GPH)

• Connection Size: 2" Slip PVC (via included BSPP unions)

• Sensor Threading: BSPP

• Required Components: FMM Module, Apex Controller

What’s Included

• 1x FS-200 2" Flow Sensor (BSPP-threaded)

• 2x BSPP to 2" Slip PVC Union Adapters

Note: Neptune FMM Module and Apex Controller required. Sold separately.