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9 technical data, 1 characteristics mfs2, 9 technical data 9.1 characteristics mfs2 – Dwyer MFS2 User Manual

Page 13

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Series MFS2

Technical data

Technical changes reserved

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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.