Yokogawa Integral Oxygen Analyzer ZR202 Manuel d'utilisateur télécharger pdf (Page 52)

<3. Installation>

3-6

IM 11M12A01-02E 8th Edition : Jan.13,2012-00

<When the surface temperature is less than 200 °C or below the dew point of the

sample gas>

(1) When the furnace pressure is negative, raise the pressure setting to increase induction ow

of the sample gas.

Refer to Section 2.7.3, Ejector Assembly for High Temperature, for the setting of induction

ow.

If there is much dust in the gas, the ejector may become clogged as induction ow increases.

(2) When the furnace pressure is positive, open the needle valve of the sample gas outlet to

increase the gas ow.

Refer to Section 4.1.4, Piping to the High Temperature Probe Adapter.

(3) Warm the probe adapter. Refer to Section 4.2.4, Piping to the High Temperature Probe

Adapter.

(4) When the surface temperature is still less than 200 °C or below the dew point of the sample

gas, even if the above measures have been taken, warm the probe adapter using a heat

source such as steam.

3.2.3 Probe Insertion Hole

A high temperature detector consists of a ZR22G-015 Detector and ZO21P High Temperature

Probe Adapter. When forming the probe insertion hole, the following should be taken into

consideration:

(1) If the probe is made of silicon carbide (SiC), the probe hole should be formed so that the

probe is mounted vertically (within ± 5° tilt).

(2) In the case where the probe is made of stainless steel and the probe adapter (ZO21P-H-B) is

to be mounted horizontally, the probe hole should be formed so that the probe tip is not higher

than the probe base.

Figure 3.5 illustrates examples of the probe insertion hole.

100mm

JIS 5K 50 FF (equivalent)

or ANSI Class 150 4 RF

(equivalent) flange

100mm

A space of 52 mm or more

in diameter, and long enough

for the length of the probe

The allowable margin for probe

tilt is within ± 5°.

An SiC probe shall be mounted vertically.

A space of 52 mm or

more in diameter, and

long enough for the length

of the probe

Never mount the probe

with its tip higher than

the base

Horizontal mounting is used with a SUS probe.

JIS 5K 50 FF (equivalent) or

ANSI Class 150 4 RF

(equivalent) flange

F3-5E.ai

Figure 3.5 Examples of the probe insertion hole

3.2.4 Mounting of the High Temperature Detector

CAUTION

• Ceramic (zirconia) is used in the sensor (cell) portion on the detector probe tip. Care should

be taken not to drop the detector during installation.

• The same applies to a probe made of silicon carbide (SiC).

• A gasket should be used on the ange surface to prevent gas leakage. The gasket material

should be selected depending on the characteristics of the sample gas. It should be heatproof

and corrosion-proof. The parts, which should be supplied by the user, are listed in Table 3.2.

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 189 190

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Yokogawa Integral Oxygen Analyzer ZR202 Manuel d'utilisateur Page 52

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