Instruction Manual

IB-106-340 Rev. 3.0 December 2003

Oxymitter 4000

h.Flowmeter Replacement

Use this procedure to replace either refer- ence air flowmeter (16, Figure 9-15)or cali- bration gas flowmeter (17).

1.Turn off power to the system.

2.Shut off the calibration gases at the cylinders.

3.Loosen, but do not remove, four screws (13) securing flowmeter bracket

(25)to the manifold.

4.Flex the bottom of flowmeter bracket

(25)downward and away to disengage and remove from the manifold.

5.For reference air flowmeter (16), re- move pressure regulator (8) by discon- necting tubing (11) from elbow fitting

(10). Also, disconnect tubing (24) from straight fitting (23).

For calibration gas flowmeter (17), dis- connect tubing (18) at elbow fitting

(21). Also, disconnect gas tubing (2) from elbow fitting (15).

6.Remove screws (6) and bracket (5) se- curing flowmeter (16 or 17) to flowme- ter bracket (25).

7.Remove flowmeter (16 or 17), with in- stalled fittings, from flowmeter bracket

(25).

8.For reference air flowmeter (16), re- move elbow street fittings (14 and 22). It is not necessary to remove fittings (10 and 23) from the street fittings.

For calibration gas flowmeter (17), re- move elbow fittings (15 and 21).

9.Apply pipe thread sealant to the threads of top fittings (22 or 21) and bottom fittings (14 or 15) and install fit- tings into new flowmeter (16 or 17).

10.Position flowmeter (16 or 17) into flowmeter bracket (25) and secure with bracket (5) and screw (6).

11.For reference air flowmeter (16), con- nect tubing (11) to elbow fitting (10) and install pressure regulator (9). Also, connect tubing (24) to straight fitting

(23).

For calibration gas flowmeter (17), connect tubing (2) to elbow fitting (15) and connect tubing (18) to elbow fitting

(21).

12.Slide the top slots of flowmeter bracket

(25)onto screws (13). Flex the bottom of the bracket downward and toward the manifold to engage the bottom bracket slots and screws. Tighten screws.

13.Turn on the calibration gases at the cylinders.

9-24 Maintenance and Service

Rosemount Analytical Inc. A Division of Emerson Process Management

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Emerson 4000 manual Flowmeter Replacement
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4000 specifications

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