Specifi cations
Model
PFMC7501
PFMC7102
PFMC7202
Fluid
Applicable fl uid
Dry air, N
2
(Air quality grade is JIS B 8392-1 1.1.2 to 1.6.2, ISO 8573-1 1.1.2 to 1.6.2.)
Fluid temperature range
0 to 50 °C
Flow
Detection method
Thermal type
Rated fl ow range
5 to 500
l/
min
10 to 1000
l/
min
20 to 2000
l/
min
Set point
range
Instantaneous fl ow
5 to 525
l/
min
10 to 1050
l/
min
20 to 2100
l/
min
Accumulated fl ow
0 to 999,999,990 L
Smallest settable
increment
Instantaneous fl ow
1
l/
min
Accumulated fl ow
10 L
Accumulated volume per pulse
(Pulse width = 50 ms)
1 L/pulse
10 L/pulse
Accumulated value hold function
∗
1
Intervals of 2 or 5 minutes can be selected.
Pressure
Rated pressure range
0 to 0.8 MPa
Proof pressure
1.2 MPa
Pressure loss
Refer to the “Pressure Loss” graph.
Pressure characteristics
∗
2
±
5 % F.S. (0 to 0.8 MPa, 0.6 MPa standard)
Electrical
Power supply voltage
12 to 24 VDC
±
10 %
Ripple (p-p) 10 % or less
Current consumption
55 mA or less
Protection
Polarity protection
Accuracy
Display accuracy
±
3 % F.S.
Analogue output accuracy
±
3 % F.S.
Repeatability
±
1 % F.S. (
±
2 % F.S. when the response time is set to 0.05 s)
Temperature characteristics
±
5 % F.S. (0 to 50 °C, 25 °C standard)
Switch output
Output type
NPN open collector
PNP open collector
Output mode
Select from Hysteresis, Window comparator, Accumulated output, or Accumulated pulse output modes.
Switch operation
Select from Normal or Reversed output.
Max. load current
80 mA
Max. applied voltage (NPN only)
28 VDC
Internal voltage drop
(Residual voltage)
NPN output type: 1 V or less (at load current of 80 mA)
PNP output type: 1.5 V or less (at load current of 80 mA)
Response time
∗
3
Select from 0.05 s, 0.1 s, 0.5 s, 1 s, or 2 s.
Hysteresis
∗
4
Variable from 0
Protection
Short circuit protection
Analogue output
∗
5
Output type
Voltage output: 1 to 5 V, Current output: 4 to 20 mA
Impedance
Voltage output
Output impedance: Approx. 1 k
Ω
Current output
Maximum load impedance at power supply voltage of 24 V: 600
Ω
,
at power supply voltage of 12 V: 300
Ω
Minimum load impedance: 50
Ω
Response time
∗
6
Linked to the response time of the switch output
External input
∗
7
External input
Input voltage: 0.4 V or less (Reed or Solid state) for 30 ms or longer
Input mode
Accumulated value external reset, Peak/Bottom value reset
Display
Reference condition
∗
8
Select from Standard conditions or Normal conditions.
Unit
∗
9
Instantaneous fl ow
l/
min, cfm (ft
3
/min)
Accumulated fl ow
L, ft
3
Display
range
Instantaneous fl ow
–25 to 525
l/
min
(Displays [0] when value is within the
–4 to 4
l/
min range)
–50 to 1050
l/
min
(Displays [0] when value is within the
–9 to 9
l/
min range)
–100 to 2100
l/
min
(Displays [0] when value is within the
–19 to 19
l/
min range)
Accumulated fl ow
∗
10
0 to 999,999,999 L
Minimum
display unit
Instantaneous fl ow
1
l/
min
Accumulated fl ow
10 L
Display
LCD, 2-screen display (Main screen/Sub screen)
Main screen: Red/Green, Sub screen: White
Main screen: 4 digits, 7 segments, Sub screen: 6 digits, 11 segments
Indicator LED
LED ON when switch output is ON (OUT1/OUT2: Orange)
Environmental
resistance
Enclosure
IP65
Withstand voltage
250 VAC for 1 min between terminals and housing
Insulation resistance
2 M
Ω
or more (50 VDC measured via megohmmeter) between terminals and housing
Operating temperature range
Operating: 0 to 50 °C, Stored: –10 to 60 °C (No condensation or freezing)
Operating humidity range
Operating/Stored: 35 to 85 % RH (No condensation or freezing)
Standards
CE marking (EMC Directive, RoHS Directive), UL (CSA)
Piping specifi cation
Rc1/2, NPT1/2, G1/2
Rc3/4, NPT3/4, G3/4
Materials of parts in contact with fl uid
Stainless steel 304, PPS, Aluminum alloy, HNBR, Si, Au, GE4F
Weight
Piping
specifi cation
Rc thread
NPT thread
160 g
240 g
G thread
170 g
245 g
Lead wire
+80 g
Bracket
+25 g
+30 g
∗
1 When using the accumulated value hold function, use the operating conditions to calculate
the product life, and do not exceed it. The maximum access limit of the memory device is 1
million times. If the product is operated 24 hours per day, the product life will be as follows:
•
5 min interval: life is calculated as 5 min x 1 million = 5 million min = 9.5 years
•
2 min interval: life is calculated as 2 min x 1 million = 2 million min = 3.8 years
If the accumulated value external reset is repeatedly used, the product life
will be shorter than the calculated life.
∗
2 Do not release the OUT side piping port of the product directly to the atmosphere without connecting
piping. If the product is used with the piping port released to atmosphere, accuracy may vary.
∗
3 The time from when the flow is changed by a step input (when the flow rate
changes from 0 to the maximum value of the rated fl ow range instantaneously) until
the switch output turns ON (or OFF) when set to be 90 % of the rated fl ow rate
∗
4 If the fl ow fl uctuates around the set value, be sure to keep a suffi cient margin.
Otherwise, chattering will occur.
∗
5 Setting is only possible for models with analogue output.
∗
6 The time from when the fl ow is changed by a step input (when the fl ow rate
changes from 0 to the maximum value of the rated fl ow range instantane-
ously) until the analogue output reaches 90 % of the rated fl ow rate
∗
7 Setting is only possible for models with external input.
∗
8 The fl ow rate given in the specifi cations is the value under standard conditions.
∗
9 Setting is only possible for models with the units selection function.
∗
10 The accumulated fl ow display is the upper 3-digit and lower 6-digit (total of
9 digits) display. The position of the dots on the upper part of the screen
indicates which digits are displayed.
∗
Products with tiny scratches, marks, or display colour or brightness variations which
do not affect the performance of the product are verifi ed as conforming products.
For fl ow switch precautions and specifi c product precautions,
refer to the “Operation Manual” on the SMC website.
10
3-Colour Display
Digital Flow Switch
PFMC7
Series
PFG300
PFMC7
PFMC7-L
Function
Details
Содержание PF2A Series
Страница 8: ...7...
