Emerson Process Management IB106-340 Oxymitter 4000. Press the CAL, Imps 4000. Use the Imps

Oxymitter 4000

Instruction Manual

IB-106-340 Rev. 2.4 April, 2001

HEATER T/C

DIAGNOSTIC HEATER

ALARMS O2 CELL CALIBRATION

4000’s logic I/O must be set to mode 8 or 9 via HART/AMS so the sequencer and Oxymitter 4000 can communicate.

Depending on your system setup, a semi-automatic calibration can be initi- ated by the following methods:

CALIBRATION RECOMMENDED

(a) Oxymitter 4000. Press the CAL

key on the Oxymitter 4000 keypad.

TEST
POINTS
INC	INC
HIGH	LOW
GAS	GAS
DEC	DEC

O2 CELL mV +

O2 CELL mv - HEATER T/C + HEATER T/C -

CAL

TEST GAS +

PROCESS -

% O2

(b)	IMPS 4000. Use the IMPS 4000
	keypad to change the InitCalX pa-
	rameter of the CHANGE PRE-
	SETS display mode from 0000 to
	0001. Refer to the IMPS 4000 In-
	telligent Multiprobe Test Gas Se-
	quencer Instruction Bulletin for
	more information.
(c)	HART. Use the HART Communi-
	cator to access the O2 CALIBRATE
	menu and perform the O2 CAL

22220067

Figure 6-2. Membrane Keypad

(c)If using an IMPS 4000, enter a time interval via the IMPS 4000 keypad that will initiate an automatic cali- bration at a scheduled time interval (in hours). To set the CalIntvX pa- rameter of the CHANGE PRESETS display mode, refer to the IMPS 4000 Intelligent Multiprobe Test Gas Sequencer Instruction Bulletin for more information.

Once an automatic calibration is initi- ated, by any of the methods previously described, the Oxymitter 4000’s CALI- BRATION RECOMMENDED alarm signals an IMPS 4000 or SPS 4000 to initiate a calibration. The sequencer sends an “in cal” signal to the control room so that any automatic control loops can be placed in manual. Then, the sequencer begins to sequence the calibration gases.

2.Semi-Automatic Calibration. Semi- automatic calibrations only require op- erator initiation. However, the calibra- tion gases must be permanently piped to the Oxymitter 4000, an SPS 4000 or IMPS 4000 must be installed to se- quence the gases, and the Oxymitter

	method. Refer to paragraph 5-7for
	the complete calibration procedure.
(d)	AMS. Refer to AMS documenta-
	tion for more information.
(e)	Remote Contact. Initiate a calibra-

tion from a remote location via the

remote contact input connection 6 provided by an IMPS 4000 or SPS

4000. Refer to the documentation available for the control system in use for more information.

Once a semi-automatic calibration is initiated, by any of the methods previ- ously described, the Oxymitter 4000’s

CALIBRATION RECOMMENDED alarm signals an IMPS 4000 or SPS

4000 to initiate a calibration. The se- quencer sends an “in cal” signal to the control room so that any automatic control loops can be placed in manual. Then, the sequencer begins to se- quence the calibration gases.

3.Manual Calibration. Manual calibra- tions must be performed at the Oxy- mitter 4000 site and require operator intervention throughout the process.

Manual calibration instructions can also be found, in condensed form, on the inside of the right electronics housing cover (Figure 6-3).

Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service 6-3