Gas Refill Instructions

Figures

Figure 1 - System Settings

Figure 2 - Monitor & Control

Figure 3 - Refill Laser Procedure is Selected

Figure 4 - Laser, Gas Refill Box

Laser box:

• Temperature - the first number shows lidar internal ambient air temperature and the number in brackets () shows the temperature of electronics,
• Energy (uJ) – laser pulse energy, Pressure (kPa) – laser gas pressure.

Gas Refill System box:

• Cylinder (kPa) – internal fresh gas cylinder pressure before the pressure regulator
• Lidar (kPa) – internal ambient pressure of lidar hull

Figure 5 - Gas refill system pipes are cleaned. Preparation for laser chamber pumping

Figure 6 - Old gas is pumped out from laser

Figure 7 - Old gas is pumped out from laser

Figure 8 - Cylinder is working. Laser chamber pressure is almost 0

Figure 9 - Cylinder is opened

Figure 10 - Laser chamber is filled with fresh gas from cylinder

Figure 11 - Gas cylinder is closing

Figure 12 - Pressure is stablilized before and after the gas cylinder pressure regulator

Figure 13 - Gas refill finished

Figure 14 - Internal Storage, monitorlog.txt

Figure 15 - Time From Last Gas refill in seconds and LaSeR Pulses From Last Gas refill

Figure 16 - Clean Water Signal Example

Peak on the left is Raman scattering signal. Broad shape on the right is Dissolved Organic Matter (DOM) fluorescence.