The following is an example of a typical data frame for a 500 SCCM mass flow controller with optional totalizer:Ī +087.6 +025.0 +164.7 +981.6 +985.0 +022741. A?G* (query the list of installed gas calibrations).AVE (query the current firmware version).Designed to be highly insensitive to external vibrations, our Coriolis units provide unwavering accuracy throughout the 0.2 g/h to 10 kg/h measurement range. APC (tare the absolute pressure with the barometer, if installed) CODA mass flow meters and controllers are compact and pair fast response times with exceptional zero stability to create an industry leading precision instrument.AHP (hold the valves at their current positions) This Alicat flow meter conforms to the European Union’s Restriction of Use of Hazardous Substances in Electrical and Electronic Equipment (RoHS) Directive 2011/65/EU.AE (exhaust for dual-valve controllers: inlet valve closes, exhaust valve opens).indicates an ASCII carriage return (decimal 13, hexadecimal D). For simplicity, we assume that the unit ID of the flow controller is A in the listings that follow. Note: Serial commands are not case-sensitive. Exhaust the controller (for dual-valve controllers only: inlet valve closes, exhaust valve opens): AE.Create a new COMPOSER gas mix (See instructions here): AGM.Query the list of installed gas calibrations: A?G*.How to change the gas selection (flow instruments only) Reset the flow totalizer (when installed): AT.Tare absolute pressure with the barometer (when installed): APC.Tare the gauge pressure (pressure instruments only): AP. ![]() Tare the flow rate (flow instruments only): AV.How to command a new setpoint (controllers only) Begin streaming data: Stop streaming data: unit ID].The tabs below cover the basics of Alicat’s serial data frame and serial commands. Query the current firmware version: AVE If your instrument has shipped with RS-232 (default for most) or RS-485 serial communications, you can issue simple ASCII commands to gather data from your instrument and change how it operates. ![]() ![]()
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