Sample Conditioning Drawers

Flow Capacity L/min
Ambient Temp. (°F) 77° 90° 105°
12% H20 Vol. 8 l/m 6 l/m 3 l/m
15% H20 Vol. 8 l/m 6 l/m 3 l/m
30% H20 Vol. 7 l/m 5.5 l/m 2.5 l/m
50% H20 Vol. 6 l/m 4.5 l/m 2 l/m
Exit Dew Point (°C) 4 4 4

Universal Analyzers offers a 6U rack mountable sample system for most applications. The sample conditioning drawer (SCD) cooler uses Peltier elements to Thermo Electrically reduce the dew point of a gas sample which rapidly condenses and removes the water, providing a dry sample for the gas analyzers. The SCD is configurable to be integrated with an external PLC/ Data Logger and/or toggle switch panel to be stand-alone controlled.

The SCD 1570 coolers have a moderate capacity thermoelectric cooler. The SCD provides a self-regulated 4.0°C dew point gas sample. The coolers condense the water from a wet gas sample with minimal loss of the water soluble gas fraction. This results from the unique design of the heat exchangers. The separation occurs in the heat exchangers which have a highly polished cylindrical surface cooled by thermoelectric Peltier devices to the desired dew point temperature. These heat exchangers are available in a variety of materials including Stainless Steel, Kynar/Glass, and Hastelloy.  For special applications, stainless steel heat exchangers can be Silconert 2000* coated.

The Sample Conditioning Drawer is 10.5” H by 19” W and 27” L. The system comes standard with the following: Sample Pump, Peristaltic Pump, Inline Filter with Water Carry Over Sensor, Pressure Gauge, Vacuum Gauge, Alarm, Switches, Calibration Gas Regulator, Solenoid Valves and Analyzer/Bypass/Calibration Gas Flow Meters.


  • Four channel sample conditioner system (Maximum)
  • Six calibration gases (Maximum) direct or system calibrations
  • Designed to be remotely controlled by a data logger or toggle switches
  • 19” Rack mount chassis with drawer slides
  • Chiller 3050 or 1050 equivalent thermoelectric gas sample chiller
  • 316SS Heat exchanger/impingers, Kynar/glass and other materials and coatings are available
  • Chiller capacity: 2 to 8 LPM @ 20% liquid
  • 77°F Ambient - dewpoint controlled at 4°C
  • CCS – Condensater carry over sensor accessible on rear of rack
  • 2 Micron filter accessible on front panel
  • Maximum of 6 calibration gas selection solenoids
  • Internal calibration gas regulator – Set @ 10 Psig
  • System or direct calibration selection w/ block & bleed design
  • Vacuum gauge, SS, liquid filled (0 – 30” Hg)
  • Pressure gauge, SS, liquid filled (0 – 15 Psig)
  • Sample vacuum switch (adjustable – Set @ 7”HG)
  • Sample pressure switch (adjustable – Set @ 5 Psig)
  • Loss of calibration gas pressure switch (adjustable-Set @ 5 Psig)
  • Single head mini dia-vac sample pump w/ integral B/P regulator
  • Dual head peristaltic liquid pump
  • ¼” SS compression fittings for analyzers gas outputs
  • Alarm contacts:
    - High inlet sample vacuum
    - Low sample pressure
    - Low calibration gas pressure
    - Condensater carry-over/high chiller temperature

Basic Technical Specifications

 Sample Flow Rate:  0 to 8 l/m*
 Maximum Inlet Sample Temperature: 280°F (138°C) w/ Glass/Kynar Heat Exchangers
700°F (371°C) w/ Stainless Heat Exchangers*
 Maximum Inlet Gas Dew Point: 194°F (90°C)
 Maximum Inlet Water Vapor Content:  70%*
 Minimum Ambient Temperature: 34°F (1°C)
 Maximum Ambient Temperature: 105°F (41°C)*
 Maximum Cooling Power (Second Stage): 126 BTUs per hour (120 kJ/Hr)
 Outlet Sample Dew Point: 39°F (4°C) 
 Maximum Input Power: 550 Watts
 Voltage: 115/230 VAC 50/60 HZ
(External fuse required for 20A or less)
 Electrical Classification: General Purpose
 Soluble Gas Removal Rates: NO       0% Loss
NO2 <10% Loss
SO2   <2% Loss
CO       0% Loss
CO2   <2% Loss 

* at reduced flow rates, see capacity charts