Flow Sensor
Please be sure to read before handling the product. Please refer to "safety instructions", "common safety instructions for products listed in this manual", "common safety instructions for flow controller" from page 24 through 35.
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Detailed setting mode
Item
Description
Default setting
Selection of flow direction
(available only on bidirectional
model)
The flow direction is set to bidirectional, one-way forward direction, or one-
way reverse direction.
Bidirectional
Select CH2 operation
Select CH2 function.
Select whether to use CH2 as switch output or as external input (accumulated
value reset/auto reference).
Switch output
Auto-reference function
When CH2 is set to auto-reference, the threshold of switch output can be read
by external input or button operations. The threshold is changed automatically
when the threshold of switch changes.
Auto-reference function
OFF
Response time setting
The response time is set in 7 stages from max.50 ms to 1.5 s. Chattering or
incorrect operations caused by abrupt flow change or noise are prevented.
Response time : Max.
50ms
Display speed setting
The digital display's update cycle is set in 3 stages from 250 ms to 1 sec.
Display blinking is minimized by making the display update cycle longer.
Display speed: 250ms
Sub display setting
Set the sub display indication selecting from flow direction, flow unit, or fluid
medium display ("Ai" for air or N
2
) type.
Flow direction
Display color setting
Set the display color.
The display color is set for the normal display and switch output ON.
For both main and sub,
Normal display: green,
Switch ON: red
Hysteresis setting
Set hysteresis of switch setting value.
Use this if flow pulsates and the switch chatters near the threshold.
Hysteresis: 1% F.S.
Flow unit setting
Select the display unit from the standard state or reference state.
Standard state (ANR): Flow converted to volumetric flow at 20
°
C & 1
barometric pressure
Reference state (NOR): Flow converted to volumetric flow at 0
°
C & 1 barometric
pressure (*1)
Flow unit: ANR
ECO MODE setting
ECO MODE is selectable.
If no button is pressed for one minute, the mode changes to ECO and the
backlight turns off, minimizing current consumption.
ECO MODE OFF
Reset settings
Settings are set to the default.
−
*1. The reference status display is a calculated (reference) value.