Series F12 Digital Gas Detection Transmitter from ATI
The Series F12 Gas Transmitter is an Intrinsically Safe (IS) version of ATI’s explosion proof D12 transmitter. In its standard form, it is designed for detection of a variety of toxic gases in hazardous area applications requiring IS devices. In addition, it is also well suited for all general purpose applications where toxic gas measurement is required. For IS installations, this transmitter is also available with a Hart communication option.
Series F12 Gas Transmitter use ATI’s standard smart sensors for maximum flexibility. Sensors are easily exchanged and contain all calibration constants in sensor memory, eliminating the need for field calibration of transmitters. Sensors may be calibrated 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 complete AC powered instrument with 3 alarm relays (SPST) available for external alarming.
- Transmitter are designed for use in application requiring intrinsically safe devices for safety purposes.
- Every transmitter will accept up to 45 different sensor modules, greatly reducing the need for multiple transmitter models.
- Gas generators permanently installed on the sensor verify sensor operation by providing a bump test of the sensor from daily to once a week.
- Plug in sensors store calibration data, allowing sensors to be calibrated separately from the transmitter. This allows bench calibration (or factory calibration) of sensors to reduce the necessity for carrying calibration gas around the plant.
- A non-IS version of the transmitter provides 3 integral alarm relays. Relays and programmable for setpoint, hysteresis, on-delay and other variables. Systems with alarms are available for operation from 12-30 VDC supplies or from 115 or 230 VAC power.
- 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 MODBUS communications. The MODBUS protocol supports 9600 baud access to concentration and status information and supports alarm setup and many other functions.
- Gas concentrations are displayed in large, easy to read numbers. The display also provides alarm indication and complete menus for setting up operating parameters.
- Measured gas values are stored at user designable intervals and can be recalled when needed on the LCD display. Data can be downloaded using a Hart or MODBUS interface.
- Each time a sensor is zeroed or calibrated, the data is stored in memory. Calibration history can be recalled and sensor condition reviewed by operating personnel whenever necessary.
- Operating functions such as calibration, alarm setup, alarm reset, data view and setup options are all available using sealed front panel switches on the face of the Nema 4X transmitter enclosure.
- For use in applications where condensation is a problem, this heater option keeps the sensor above the whew point to eliminate loss of sensitivity due to moisture blockage on the sensor face.
- Transmitter analog output can be set to user definable values and relay outputs can be set to specific states for complete simulation of detection system operation. Output and alarms may also be inhibited for maintenance and calibration.
Low Cl2 Response
|Hydrogen Bromide*||0-10/200 ppm||20 ppm|
|HC Sensor||Specify Gas||–|
(*) Indicates Auto-Test available
|Range||User adjustable within limits of selected sensor module|
|Response Time||Sensor dependent|
|Accuracy||Generally ±10% of value, but limited by available calibration gas accuracy|
|Electronic Repeatability||±1% of full scale|
|Electronic Linearity||±0.5% of full scale|
|Zero Drift||Less than 2% of full scale per month, non-cumulative|
|Span Drift||Application dependent, but generally less than 3% per month|
|Alarm Relay Option||Three SPST 5A@ 230 VAC resistive|
|Analog Output||Loop powered 4-20 mA, 800 ohms maximum at 24 VDC (except combustible gas)|
|Serial Interface||HART (1200 baud modem interface), MODBUS (1200-9600 – RS-232 or RD-485, software selectable)|
|Power||12-30 VDC, 25 mA maximum in loop powered mode
12-30 VDC, 200 mA maximum in 3-wire mode
115 or 230 VAC, 50/60 Hz
|Alarm Relays||Three SPDT, 5A@230 VAC resistive|
|Relay Coil||Programmable either normally energized or normally de-energized|
|Enclosure||Explosion proof Class 1, Div 1, Groups B, C, D or NEMA 4X|
|Sensor Type||Electrochemical for toxic gases and oxygen|
|Controls||4 magnetic switches on front of transmitter|
|Temperature||-30° to + 60°C for toxics, -10°C minimum for oxygen sensor|
|Heated Sensor Power||24 VDC connection, 250 mA|
For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email firstname.lastname@example.org.