5
O&M Manual (Rev-H)
Part1 - Introduction
1.1
General
F12/D Gas Transmitter
The F12/D Gas Transmitter is used to monitor for gas leaks near storage cylinders, process piping, or gas
feed equipment in nearly any type of industrial plant environment. It is housed in NEMA 4X, polycarbonate
enclosure and features an H10 Smart Sensor, a non-intrusive four button user interface with a backlit
transflective graphics display, three level alarms with three (optional) alarm relays, a high-resolution 4-
20mA current loop output, real-time clock, data-
logger, and optional HART™ or Modbus™ communication
interface. In addition, the transmitter offers several optional E18 gas generators for automatic, timed testing
of H10 sensors.
H10 Smart Sensor and E18 Gas Generator
H10 Smart Sensors and E18 generators contain non-volatile
memory to store information about the target gas they were
designed to monitor, or generate. They contain general
information about the target gas, such as the name, range,
units, alarm settings, along with specific calibration information,
such as response to gas, mA-Hr of usage, and calibration
history. Information is transferred into the transmitter at startup,
and whenever one of the components is inserted into a live
transmitter. Because all calibration data is stored in the
memory, sensor modules may be calibrated using a spare
transmitter in the shop, and subsequently installed into a field
transmitter, eliminating the need for field calibration.
Sensors are inserted into the housing at the base of the
transmitter. They are easily removed, and installation is
simplified by way of an indexing groove that aligns the connector
for a perfect fit. Once installed, a threaded port cap secures it in
place.
F
igure 1- Transmitter w/Sensor & Generator
Sensors are designed for use in ambient air at temperatures of -30 °C to +60 °C, at a relative humidity
between 20 and 98 %RH (some sensors are rated to -40 °C, oxygen sensors are rated to -10 °C). Operating
sensors in extremely dry air, or in condensing gas streams, is not recommended.
Generators are inserted into the optional generator housing attached to the bottom of the sensor housing
at the base of the transmitter. Installation of a generator is simplified by way of an indexing groove that
aligns the connector for a perfect fit. Once installed apply a little pressure to the top of the generator, and
tighten the set screw (using the ATI screwdriver) on the housing to provide a secure fit. An O-Ring in the
sensor cap provides the mechanism for securing the generator to the transmitter. Simply press the
generator into the bottom of the sensor cap until it is secure.
