TURNER DESIGNS LITTLE DIPPER 2™ IN-LINE FLUOROMETERS AND HANDHELDS

The Little Dipper™ 2 is an accurate, single-channel, light industrial fluorometer which installs directly into industrial process streams.

The Handheld Little Dipper™ is a small, lightweight, highly durable handheld fluorometer ideal for quick measurements in the field. Two versions are available for cooling tower and boiler system applications. Simple to operate, the Handheld Little Dipper is a perfect tool for system verification.

We inventory the following Turner Designs inline fluorometers:

LITTLE DIPPER 2™ IN-LINE FLUOROMETER

OVERVIEW

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 data collection systems to monitor and control the level of treatment chemicals for industrial applications.
Patent Number 7,099,012


PRODUCT HIGHLIGHTS

  • Improved turbidity and dissolved iron rejection
  • Dynamic Range:
    • <1 to 300 ppb typical for PTSA
    • <1 to 300 ppb typical fluorescein
  • Sensitivity: <1 ppb typical
  • Simple calibration
  • Solid state fluorometer uses LED/photodiode technology, no moving parts
  • Customizable optics: (365 – 1100 nm)

 

Little Dipper 2 Performance Specifications

Dynamic Range < 1 to 300 ppb typical for PTSA

< 1 to 100 ppb typical for fluorescein

Sensitivity < 1 ppb typical

 

Little Dipper 2 Electrical Specifications

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

Little Dipper 2 Physical Specifications

Material PVC – Type I, machined plastic
Weight 4.4 ounces (125 g)
Length 8.63 inches (21.9 cm)
Housing Diameter 1.3 inches (3.3 cm)
Diameter at Flange 1.72 inches (4.4 cm)
Temperature 0 – 50◦ C

 

Mounting Tee Physical Specifciations

Material PVC – Type I, molded plastic
Dynamic Pressure 100 PSI
Threading 1 inch (NPT)
Length 3.30 inches (8.4 cm)

HANDHELD LITTLE DIPPER™ FLUOROMETER

OVERVIEW

The Handheld Little Dipper is a small, lightweight, highly durable handheld fl uorometer ideal for quick measurements in the fi eld. Two versions are available for cooling tower and boiler system applications. Simple to operate, the Handheld Little Dipper is a perfect tool for system verification.

2850-000-A – 2850-000-A Handheld Little Dipper with PTSA Channel
2850-000-F – Handheld Little Dipper with Fluorescein Channel


PRODUCT HIGLIGHTS

  • Dustproof, watertight, highly durable Dynamic Range:
  • Small size easily fi ts in shirt or jacket pocket
  • >10,000 measurements per AA battery set
  • Single-point (100 ppb) calibration
  • 10 bit resolution
  • 5 second warm up
  • Low maintenance field fluorometer

Handheld Little Dipper Specifications

Linear Range: 0-200 ppb typical for fluorescein

0-200 ppb typical for PTSA

Sensitivity: 1ppb typical for fl uorescein and PTSA
Temperature: 41o – 104oF (5o – 40oC)
Warm up time: 5 seconds
Case: IP 67 standard; dustproof/waterproof
Power: 2 AA batteries
Light Source: LED
Detector: Photodiode
Weight: 4.3 oz; 120 g
Size: 8.9”x 2”x 1.75”; 22.6 cm x 5.1 cm x 4.5 cm

ABOUT TURNER DESIGNS

For over 40 years Turner Designs has specialized in providing sensitive, reliable and easy-to-use fluorometers for environmental and industrial uses. They specialize in the measurement of fluorescent tracers, algal pigments, and other naturally occurring fluorescent compounds. They also provide in-depth instrument support and offer devices designed to enhance simplicity and improve quality.


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