F12 Transmitter use ATI's standard smart sensors for maximum flexiblity. Sensors are easily exchanged and contain all calibration constants in sensor memory, eliminating the need for field calibration of transmitters. Sensors may be calibrated separetely on the bench and then simply plugged into the transmitter. Calibration data is read into the transmitter automatically and no other adjustments are normally required. For general purpose gas detection applications, the F12 transmitter is also available in Non-IS versions. One version provides for easy interface to RS-485 networks using a standard MODBUS communication protocol. A second version provides a cmplete AC powered instrument with 3 alarm relays (SPST) available for external alarming.

• Intrinsically Safe Design - Transmitter are designed for use in application requiring intrinsically safe devices for safety purposes.
• Interchangeable Sensors - Every transmitter will accept up to 45 different sensor modules, greatly reducing the need for multiple transmitter models.
• Smart Sensor Modules - Plug in sensors store calibration data, allowing sensors to be calibrated separetly from the transmitter. This allows bench calibration (or factory calibration) of sensors to reduce the necessity for carrying calibration gas around the plant.
• Alarm and Relay Option - A non-IS version of the transmitter provides 3 integral alarm relays. Relays and programmable for setpoint, hysteresis, on-delay and other variables.
• Serial Communication Interface - The IS version of the transmitter is available with Hart communications. The Hart protocol supports the Hart Universal and Common Practice Commands at 1200 baud using the Bell 202 FSK modem standard. The non-IS versions of the transmitter are available with MODUS communications. The MODBUS protocol supports 9600 baud access to concentration and status information and supports alarm setup and many other funcations.
• LCD Graphics Display - Gas concentrations are displayed in large, easy to read numbers. The display also provides alarm indication and complete menus for setting up operating parameters.
• Internal Data Logger - Measured gas values are stored at user desingabl eintervals and can be recalled when needed on the LCD display. Data can be downloaed using a Hart or MODBUS interface.
• Sensor Calibration History - Each time a sensor is zeroed or calibrated, the data is stored in memory. Calibration history can be recalled and sensor condition reveiwed by operating personnel whenever necessary.
• Non-intrusive Operation - Operating funcations such as claibration, alarm setup, alarm reset, data view and setup options are all availabl eusing sealed front panel switches on the face of the Nema 4X transmitter enclosure.
• Password Protection - Program setting stored in the transmitter may be protected by a suer selectable password. Operators may still review all funcations, but changes may only be made up authorized personnel.
• Output Simulation - Transmitter analog outpur can be set to user definalbe values and relay outpurs can be set to specicifc states for complete simultaion of detection system operation. Output and alarms may also be inhibited for maintenance and calibration.