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Instruction Manual

106-300NFX Rev. 4.2

January 2002

2-22 Installation Rosemount Analytical Inc. A Division of Emerson Process Management

World Class 3000

HIGH CAL

GAS IN

LOW CAL

GAS IN

TEST GAS

OUT

REF AIR

OUT

INSTR

AIR

REF AIR

OUT

REF AIR

OUT

REF AIR

OUT

TEST GAS

OUT

TEST GAS

OUT

TEST GAS

OUT

PROBE 1 PROBE 2 PROBE 3 PROBE4

LINE IN

SIGNAL IN

DRAIN

35870003

Figure 2-18. MPS Gas Connections

Do not use 100% nitrogen as a low

(zero) gas. It is suggested that the low

gas be between 0.4% and 2.0% O

. Do

not use gases with hydrocarbon con-

centrations of more than 40 parts per

million. Failure to use proper gases

will result in erroneous readings.

3. Connect the low O

test gas to LOW

GAS. The test gas pressure should be

set at 138 kPa (20 psi).

4. Connect the REF AIR OUT to the ref-

erence gas fitting on the probe junction

box.

5. Connect the TEST GAS OUT to the

calibration gas fitting on the probe

junction box.

6. If the MPS is configured for multiple

probes (up to four), repeat steps 4 and

5 for each additional probe.

A check valve is required for each

probe connected to an MPS to prevent

condensation of flue gas in the cali-

bration gas lines. The check valve

must be located between the calibra-

tion fitting and the gas line.

c. Electrical Connections

Electrical connections should be made as

described in the electrical installation dia-

gram, Figure 2-19. All wiring must conform

to local and national codes. The electrical

connections will exist only between the

electronics package and the MPS to enable

automatic and semiautomatic calibration. If

more than one probe system is being used,

the additional probes and electric packages

would be wired similarly to the first probe.

NOTE

MPS power supply fuse locations and

specifications are shown in Figure

2-19.

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 157 158

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