Yamatake ST3000 User Manual

Yamatake Corporation Operation Using SFC
ST3000 Smart Transmitter Series 900 Electronic Differential Pressure/Pressure Transmitter 6-35
6-7-7 :Display or Change Low Flow Cutoff Value
This function is effective only when Square Root is selected for the output format.
When the flow rate falls below a fixed value (valid range of low flow cutoff value:
0~20%), the flow rate is processed as zero.
Also, a dropout format (linear/zero) and a flow rate mode (DEFAULT/EXPAND) can
be selected.
Figure 6-2 Relationship Between Input and Output (%) Determined by Low Flow
Cutoff Value Setting
~Note Flow rate mode
DEFAULT : Ordinarily, this mode is selected, in most cases.
EXPAND : This mode is selected when the range is expanded. For
example, when the range is set near the normal flow rate, or when
reverse flow rate output must be obtained using a reversible orifice.
7.1%
Linear
Square root
(Cutoff value+ Default value)
Square root
(Cutoff value+ Any set value)
Drop out linear Drop out zero
Output Output
Input Input
Output
Input
Output
Input
Cutoff valueCutoff value

Yamatake ST3000 Specifications

General

Brand	Yamatake
Model	ST3000
Category	Transmitter
Language	English