Emerson Process Management IM-106-340 instruction manual Oxymitter

Instruction Manual

IM-106-340, Rev. 4.0 May 2006

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 O2 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 3-1and

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).

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