Præcis Environment™ Systems
ATCU HCU Enclosure
The Praecis Environment components are modular and customizable.
Praecis provides ultra-precision climate control for any size enclosure or room. The Praecis Environment controls environmental variables including temperature, humidity, pressure, and cleanliness.
Customized System.
The Præcis Environment System is a turnkey, precision climate control system customized to the application. The Praecis Environment systems are the world’s most accurate and cost effective climate control systems .
Praecis provides system engineering from concept to installation and acceptance testing. Each system can have any combination of features and controls. We design, build, and install each system using state-of-the-art elements and controllers customizing each system for the application.
Climate Control Variables
Temperature. Stability to within ± 0.004 ° C at the “Critical Point” (control point).
Humidity. Constant up to ± 1% RH around the relative humidity set point. The Praecis Humidity Control unit uses steam in an isothermal process, and as such does not change the temperature of the air.
Cleanliness. Praecis systems comply to ISO cleanroom standard 14644-1, Class 9 down to Class 1. Includes HEPA or ULPA filters, laminar air flow to maintain constant uni-directional flow (mandated in ISO 1 - 4 classified cleanrooms). Cleanroom features can include absence of horizontal surfaces, rounded corners, pass-through chambers/showers, and air sampling to monitor contamination inside the closure.
Pressure. Positive air pressure cleanrooms normally operate within an air pressure range of 5.0 Pa to 50.0 Pa. The Praecis system can control pressure to ± 1 Pa.
Central Climate Control Processor.
The ATCU houses the climate control hardware and software. Praecis Control Software software controls, monitors, and records of all enclosure conditions. The measurements display on a single user interface; the software is user friendly providing real time data as well as warning alarms if the set temperature goes out of bounds.
The System Runs Itself.
Once tuned, Praecis systems do not require user interaction and will operate indefinitely without adjustment. If there is a significant change in the operating conditions or ambient variables, Praecis can monitor and adjust system control parameters from our headquarters.
A Praecis Environment system display (typical).