38
Chapter 7. SPECIFICATIONS
Notes: 6.The 50 ms measurement cycle becomes approx. 0.5 s if the calculation filter is set to “1.”
7.For RS-485 communications models, there is no terminal output. The LED indicator lamp lights up, and a
state flag can be read out.
Item MCF0080 MCF0150 MCF0151 MCF0250 MCF0400 MCF0500
Operating pressure range -0.07 to +1.0 MPa (gauge pressure)
Operating temperature range
-10 to +60 °C (without freezing)
Operating humidity range 0 to 90 % RH (without condensation)
Storage temperature range
-20 to +70 °C (without freezing)
Storage humidity range 0 to 90 % RH (without condensation)
Pressure resistance 1.5 MPa (gauge pressure)
Allowable leakage rate 100 mL/h (at internal pressure of 1.5 MPa)
Pipe size (Rc or G depend-
1/4 inch 1/2 inch 1/2 inch 1 inch 1 1/2 inch 2 inch
ing on model)
Rated voltage 24 Vdc
Power supply range 22.8 to 25.2 Vdc
Current consumption 120 mA max.
Measurement cycle 50 ±5 ms (factory setting)
Instantaneous flow rate Current output: 4 to 20 mA (3.2 to 20.8 mA of output range)
output Output at alarm occurrence (upper): 21.6
±0.4 mA (factory setting, variable by function
(4 to 20 mA output models setup)
only) Output at alarm occurrence (lower): 0.0
±0.4 mA (fixed)
Allowable load resistance: 300 Ω max.
Maximum output current: 24 mA max.
Response time 1.5 s max. (time until 95 % of final value for response to 0 to 100 %FS step input, with
50 ms measurement cycle and calculation filter 8.) (Note 6)
Event output (Note 7) NPN open collector: 30 Vdc, 50 mA max
Selectable from following functions:
• Instantaneous flow rate switch (upper limit, lower limit, within range)
• Integrated flow switch (count-up, countdown)
• Integrated pulse output (3 assignable pulse weights)
• Alarm output
RS-485 communications 3-wire type
(RS-485 communications Transmission speed: 4800, 9600, and 19200 bps
models only) Protocol: Modbus
Data storage EEPROM non-volatile semiconductor memory
Dielectric strength 1 mA or less of leak current when 500 Vac is applied for 1 s between contacts of
connector and main flow path or mounting bolts.
Insulation resistance 50 MΩ or more between contacts of connector and main flow path or mounting bolts,
with 500 Vdc megger
Protective structure IP65 (JIS C0920 and IEC529) ingress protection for indoor installation
Measurement module mount-
2.6 to 3.3 N·m
ing bolt tightening torque
Standards compliance EN61326-2-3: 2006 / EN61326-1: 2006
UL File No.E246616
(model Nos. MCF _ _ _ _ F _ _ _ _ _ _ _ _ _ and MCF _ _ _ _ AG _ _ _ _ _ _ _ _ are not UL-
approved.)
Mass
Approx. 400 g Approx. 400 g Approx. 400 g Approx. 500 g Approx. 700 g Approx. 1.1 kg
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