Emerson Oxymitter 5000, Instruction Manual

Page: 54 / 226

Oxymitter 5000
2-12
Instruction Manual
IM-106-350, Rev 2.2
July 2008
a. Fieldbus Digital Signal. The fieldbus digital signal carries the O
2
value. This digital signal can also be used to communicate with the
Oxymitter.
b. Calibration Handshake/Logic I/O. The output can either be an alarm
or provide the handshaking to interface with an IMPS 4000 or
SPS 4001B. For more information, refer to "Calibration Handshake
Signal" in Section 4: Configuration of Oxymitter 5000 with LOI, and
either the IMPS 4000 Intelligent Multiprobe Test Gas Sequencer
Instruction Manual or the SPS 4001B Single Probe Autocalibration
Sequencer Instruction Manual.
c. If autocalibration is not utilized, a common bi-directional logic contact
is provided for any of the diagnostic alarms listed in Table 8-1. The
assignment of alarms which can actuate this contact can be modified
to one of seven additional groupings listed in Table 3-1 and
Table 4-1.
The logic contact is self-powered, +5 VDC, 340 ohm series
resistance. An interposing relay will be required if this contact is to be
utilized to annunciate a higher voltage device, such as a light or
horn, and may also be required for certain DCS input cards. A Potter
& Brumfield R10S-E1Y1-J1.0K 3.2 mA DC or an equal interposing
relay will be mounted where the contact wires terminate in the
control/relay room.
d. Install cover (31, Figure 9-3).