Little Dipper 2

Little Dipper 2 In-Line Fluorometer

The Little Dipper™ 2 is an accurate, single-channel, light industrial fluorometer which installs directly into industrial process streams. It provides a 4 – 20 mA signal output proportional to the concentration of the fluorophore being measured.

The Little Dipper 2 is a rugged, 24/7 sampling device that provides maximum performance, minimal maintenance, and solid state reliability. It can be used with CHEMTROL remote monitoring to monitor and control the level of treatment chemicals for industrial applications.

Product Highlights:

  • Improved turbidity and dissolved iron rejection
  • Dynamic Range:
    <1 to 300 ppb typical for PTSA
    <1 to 100 ppb typical for fluorescein
  • Sensitivity: <1 ppb typical
  • Solid state fluorometer uses LED/photodiode technology, no moving parts

Physical Specifications

Material: PVC – rigid injection/ molded plastic
Weight: 125 g
Length: 21.9 cm
Housing Diameter: 3.3 cm
Diameter at Flange: 4.4 cm
Temperature 0 – 50 °C

Mounting Tee

Material: PVC – rigid injection/ molded plastic
Dynamic Pressure 100 PSI
Threading: 1 inch NPT
Length: 8.4 cm


Power Draw 0.80 W @ 12 VDC (1.0 W maximum)
Input Voltage 8-30 VDC
Signal Output 4-20 mA
Warm up time 5 seconds


  • Industrial Water Process Control 
    • Cooling Towers
    • Boilers
    • Others
  • Leak Detection
  • Reverse Osmosis
  • Environmental Monitoring