Teledyne 2240 – Portable Handheld Hydrogen Leak Detector, 3rd generation (updated 1/31/11) - Manual (Page 15)

Handheld Hydrogen Leak Detector Model 2240
Teledyne Analytical Instruments Page 15 of 30
The Probe Tip LED Indicator shows an increase or decrease in
hydrogen concentration. Leak detection is accomplished by watching
the Probe Tip LED and the bar graph array and moving the sensor
around a potential hydrogen leak.
Solid Green - Unit ready
- < 15 ppm hydrogen
Pulsing Green - Decreasing H2 level
Solid Amber - System startup
- Steady H2 level
Pulsing Red - Increasing H2 level
Alternating Red, Green - Fluctuating H2 level
Probe Tip Colors