Installation Yamatake Corporation
4-8 ST3000 Smart Transmitter Series 900 Electronic Differential Pressure/Pressure Transmitter
<Example of calculation>
Let’s take up an example in which a remote seal type transmitter of the of the general
specifications is used for a vacuum application (3kPa abs.)
• Liquid contacting pressure :Normal pressure (24°C)
• Low limit of allowable pressure ( ) :2 kPa abs. (15mmHg abs.)
• Specific gravity of sealed liquid ( ) :0.935
• Inner pressure of tank ( ) :3kPa abs.
The condition that must be met to satisfy the transmitter specifications is as follows:
Therefore, the high limit of the transmitter position is 109mm.
ρ
ρ′
ρ
0
hP
0
P–()102 ρ′()⁄×≤
h 32–()102 0.935⁄×≤ 109mm=
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