Type 8741

20 | 24

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5.4. Modbus RTU

D-Sub, 9-pin, plug

Pin

Assignment

1

2

3

4

5

6

7

8

9

1

Not connected

2

GND

3

24 V

4

Not connected

5

Not connected

6

RS485-Y

7

RS485-Z

8

RS485-B

9

RS485-A

Housing Shielding

6.

Performance specifications

6.1. MFM pressure loss diagram

The diagram shows an example of the pressure loss characteristics when air flows through. To determine the pressure loss of other gases,

the corresponding air equivalent must first be calculated and the base block used for the other gas taken into account.

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

160

Q [l

N/min]

G 3/4

Sub-base

G 1/4

G 3/8

G 1/2

Sub-base