6F8A0917
•Range switching output One Digital Output (DO) is used
•Single direction,
•Forward/reverse direction switching signal
Two Digital Outputs (DO) are used
•Single direction,
•Forward/reverse
•High/low limit alarm output
An alarm is output when flow rate goes above or below the
Setting range −10 to 110% of the settable maximum range High limit 2 points, low limit 2 points can be set
At the time of alarm output, Normally Open or Normally Closed contact can be selected
•Preset counter output
Contact ON when totalizer count exceeds the set value
Setting range 1 to 99999999 count
•Converter error alarm
An alarm is output when an operation error is detected by
At the time of alarm output, Normally Open or Normally Closed contact can be selected
•Digital Input (option: added when 9th digit of specification code is “3”): 2 Digital Inputs
Signal type: | Voltage signal of 20 to 30 VDC (H level: 20 to 30 VDC, L level: 2 VDC : |
| or less) |
Input resistance: About 2.7 kΩ
*For digital input function, either of the following functions can be selected. Digital Input function
• Range switching input | One Digital Input is used: switching between large and small ranges |
| of forward/reverse, |
| Two Digital Inputs are used: switching between ranges of single |
• Totalizer control input | direction, |
Totalizer Start/Stop control or Reset/Start | |
• Output hold input | Fixed with set value for current output and pulse output (loop check) |
• Zero adjustment input | Performs still water zero adjustment |
4.Communication function
• Communication signal: Digital signal is superimposed on 4 to 20mA signal line (conforms to
HART*1 protocol)
• Load resistance 240Ω to 1kΩ
•Load capacitance 0.25μF or less
• Load inductance 4mH or less
(For maximum cable length, about 2km is a guideline length when
*1 HART: “HART” stands for Highway Addressable Remote Transducer and is the name of the communication protocol for industry sensors that is recommended by HCF (HART Communication Foundation).
