Emerson Process Management OXYMITTER 4000 IM-106-340 - Manual (Page 49)

Instruction Manual
IM-106-340, Rev. 4.0
May 2006
2-11
Oxymitter 4000
NOTE
To maintain proper earth grounding, ensure a positive connection exists
between the sensor housing, the electronics housing, and earth. The
connecting ground wire must be 14 AWG minimum. Refer to Figure 2-9.
NOTE
Line voltage, signal, and relay wiring must be rated for at least 221°F (105°C).
1. Remove cover (27).
2. Connect Line Voltage.
a. Connect the line, or L1 wire to the L1 terminal and the neutral, or
L2 wire, to the N terminal (Figure 2-9). The Oxymitter 4000
automatically will configure itself for 90-250 VAC line voltage and
50/60 Hz. The power supply requires no setup.
3. Connect 4-20 mA Signal and Calibration Handshake/Logic I/O Leads.
Use individual shielded twisted wire pairs. Terminate the shield only at
the electronics housing.
a. 4-20 mA Signal. The 4-20 mA signal represents the O
2
value and
can also operate the Model 751 Remote Powered Loop LCD Display
or any other loop powered display. Superimposed on the 4-20 mA
signal is HART information that is accessible through a Model
275/375 Handheld Communicator or AMS software.
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 "Logic I/O" in Section 4:
Configuration of Oxymitter 4000 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 (27, Figure 9-3).