PECM Issue 19 2016 | Page 147

sensorsandtransmitters.com [email protected] Humor 20 Calibration Chamber Using an extension cable (up to 10 meters in length ) for the probes they can be connected to the Humor 20 calibration chamber. EE66 Low Flow Air Velocity Transmitter Our EE660 air velocity sensor is ideally suited to this task with the capability of measuring in the 0.15 to 1 m/second range. The EE22 series humidity transmitter is widely used in clean rooms where the plug-in digital sensors for humidity and temperature have shown long term stability and excellent accuracy. Loop Calibration of Humidity and Temperature (as recommended by the FDA) can be simply implemented with the aid of the separate probes. Using an extension cable (up to 10 meters in length ) for the probes they can be connected to the Humor 20 calibration chamber. Laminar flow cabinets are used as local clean rooms for the production, assembly and testing of sophisticated products with high quality standards. In the first stage of the process, room air is blown through the top of the cabinet via a preliminary filter, removing larger particles. In the second stage the pre-filtered air is evenly blown through a HEPA filter with 99% efficiency. To maintain the required air quality the air velocity across the filter has to be accurately monitored. Our EE660 air sensorsandtransmitters.com velocity sensor is ideally suited to this task with the capability of measuring in the 0.15 to 1 m/second range. This is just one of many applications where processes require a constant air flow, or a constant positive pressure; where humidity needs to be controlled, and condensation avoided. We can supply a wide range of instruments for Industrial or HVAC use. [email protected]