Table of Contents

Cloud Spectrometer and Impactor (CSI)

Description

Mounting Location

Air Sampling Location

Instrument Requirements

Probe Power Amps Items
28VDC #1 3.1 DC-DC converters TDL, CDP
Aux PWR 2.0 TDL, vaporizer, flow solenoid
28VDC #3 3.5 Tip, Fin, Pitot heater
28VDC #2 11.4 All CDP heaters
DC Pump PWR Amps
28VDC 4.0

[Source mikhail.pekour@pnnl.gov Date:01/21/2015]

CSI Pump

Data Collection

Picture

See Picutre on Droplet Measurement Technologies Web Site.

Network Connection

RS-422 Connection

Laptop connection to CSI Computer

  1. Remove the cover plate from the left side of CSI dome.
  2. Connect the monitor crossover cable between the impactor and the remote computer. Power up the remote computer.
  3. Power up the impactor.
  4. On the remote computer, click on Start, right click on My Network Places, click on Search for Computers, enter 10.10.10.10 and hit Search. The system should find the impactor directory C.
  5. Double click on C, and the directory listing of the impactor will appear. Go to the data directories and copy over the data as needed. It is recommended that the data be deleted from the impactor computer after it has been archived at another location.

Output Data Channels

Main Data File

Short Name Units Long Name
time HH:MM:SS Time
meas_supp lpm Measured Supply
meas_bypass lpm Measured Bypass
meas_sample lpm Measured Sample
count_flo lpm Counter Flow
tdl_h2o g/m3 TDL H2O
tdl_press mb TDL Chamber Pressure
tdl_temp C TDL Cell Temp
tip_temp C Tip Temp
tube_temp C Tube Temp
amb_temp C Ambient Temp
rtd_resist Ohms RTD Resistance
field_wv Field Calibrated Water Vapor
twc mg/m3 Total Water Content
air_speed m/s Air Speed
temp_5 Temp 5
temp_6 Temp 6
temp_7 Temp 7
volt_6 Volt 6
volt_7 Volt 7
numb_conc #/cm3 Number Concentration
vol_conc um/cm3 Volume Concentration
lwc g/m3 Liquid Water Concentration
mvd um/cm3 Median Volume Diameter(MVD)
eff_dia um Effective Diameter

TDL Output File

Short Name Units Long Name
time HH:MM:SS Time
tdl_1 g/m3 TDL 1
tdl_2 mb TDL 2
tdl_3 C TDL 3
pp2f PP2F
power Power
index Index
zero Zero
t_laser T laser
t_sink T sink

Calibration Coefficients

Cal.Coeff. Tab: The following can be changed using this formula. Scaled Value =(slope*raw value)+offset

Current Settings:

Raw tab TDL Cal. Coef: C_0:1 C_1:0 C_2:0

Scaled Values are in the Raw tab and in the data file