9 technical data, 1 characteristics mfs2, 9 technical data 9.1 characteristics mfs2 – Dwyer MFS2 User Manual
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9 Technical data
The technical data of customized versions may differ from the data in these instructions.
Please observe the information specified on the type plate.
9.1 Characteristics MFS2
Type
MFS2-1 MFS2-2 MFS2-3 MFS2-4 MFS2-5 MFS2-6
Measurement device characteristics
Flow range [gpm]
0.066…1.3 0.26…5.3 0.66…13.2 1.3…26.4 2.6…53
3.3…66
Accuracy*
±1% of reading
Repeatability 1%
Output signal starting
from [gpm]
(Accuracy 5%)
0.02 0.07 0.27 0.52 1.05 1.3
Max. flow rate [gpm]
1.6
6.6
15.8
31.7
63.4
79.3
Response time
< 100 ms
Indications
red LED = Supply voltage • green LED = Flow
Output signal characteristics
Frequency output:
- Pulse rate / K-Factor**
[pulses/gal]
15000
3000 1500 750 380 300
- Resolution** [ml/pulse]
0.25 1.3 2.5 5.0 10.0 12.6
- Signal shape
Square wave signal • duty cycle 50:50
can be connected as PNP or NPN open collector
- Signal current
≤ 25 mA
Electrical characteristics
Supply voltage
24 VDC ±15%
Power consumption
0.6 W
Electrical protection
measures
short-circuit proof • protected against polarity reversal
Electrical connection
4-pin plug M12x1
Degree of protection
IP 65 (only with a connected coupling)
Process variables
Medium to measure
Water and other conductive liquids
Min. conductivity of the
medium
20 μS/cm
Medium temperature
14…140 °F (not freezing)
Ambient temperature
41…140 °F
Nominal diameter
DN 8
DN 15
DN 20
DN 25
Inner diameter
0.31 in
0.55 in
0.71 in
0.98 in
Max. working pressure
(at … °F)
145 psi (68 °F) • 116 psi (104 °F) • 87 psi (140 °F)
higher pressure ratings on demand
Process connection
½ - 14 NPT
¾ - 14 NPT
1 - 11.5 NPT
1¼ - 11.5
NPT
* test conditions: Water 73.4 °F
** other pulse rate / resolution on request.
optional: Output signal with lower frequency, designed specifically for connection to digital PLC
inputs.