Psychrometric Test Room2019-01-04T22:01:04+00:00

Psychrometric Test Room

Climatic Testing Systems, Inc. (CTS) designs and manufactures Psychrometric Test Rooms, in accordance with ASHRAE Standard 37, that are used by air conditioner manufacturers to determine the thermal performance of unitary air conditioners, split systems and heat pumps.

Dual, environmentally controlled rooms are used to simulate indoor and outdoor conditions. The Air Enthalpy Method is used to determine unit capacities and obtain heat balances. Code Testers utilizing AMCA nozzles and designed specifically to ASHRAE Standards, are used to provide accurate determination of the test unit air flows and outlet air conditions.CTS control software allows the user to perform all the ARI standard tests.

CTS offers Psychometric Test Rooms up to 150 Ton capacity with a 10:1 turndown range for each facility.

Click here to read the SKM Highlights Newsletter featuring our Psychometric Test Room.

Download the Psychometric Test Rooms Data Sheet here

Indoor Dry Bulb Temperature40 to 104°F
4 to 40°C
± 0.2°F
Indoor Dew Point Temperature 35 to 86°F
2 to 30°C
± 0.3°F
± 0.2°C
Outdoor Dry Bulb Temperature -20 to 131°F
-26 to 55°C
± 0.2°F
± 0.1°C
Outdoor Dew Point Temperature 5 to 95°F
-15 to 35°C
± 0.3°F
± 0.2°C
Indoor and Outdoor Room Air Flows Up to 20,000 cfm
Up to 34,000 m3/hr
± 5%
Unit Under Test Voltage 90 to 600V ± 1%
Heat Balance
3% or better
1% or better
  • Indoor/Outdoor Room Design
  • Full Conditioning Capacity in each room, removing need for reversal of UUT in partition wall
  • Cost efficient central refrigeration system
  • Re-circulating air blowers in each room to maintain temperature uniformity during low airflow testing
  • Indoor Room Code Tester
  • Outdoor Room Code Tester
  • Microprocessor Controlled Variable Voltage Transformer to control power to UUT
  • Computerized Data Acquisition and Control System using LabView
  • Conformance with ASHRAE 37 and AHRI 210/240 and AHRI 340/360
  • Editing of test programs
  • Automatic test sequencing
  • Loop calibration and calibration reports
  • Hardware checkout routine
  • Stability monitoring
  • Real-time tolerance adjustments
  • Real-time history graphing capability
  • Automatic test report generation
  • Data file management
  • 3% agreement or better, indoor code tester to outdoor code tester
  • 1% repeatability of test results