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Doc. No. ZQ-OM01301-A
- 37 -
Maximum vacuum release flow rate
Vacuum release flow rates in product specifications and according to the V port size
[L/min (ANR) ]
V
Port
Size
Supply pressure error
[MPa]
ZQ05
□
A
ZQ07
□
A
ZQ10
□
A
ZQ000
□
A
Common
PD
Individual
PD
Common
PD
Individual
PD
Common
PD
Individual
PD
Common
PD
Individual
PD
ø3.2
0.1
-
16
-
14
-
11
-
23
0.2
-
26
-
23
-
19
-
38
0.3
39
31
35
28
29
22
52
43
Standard supply
pressure
Note 1)
45
39
47
41
38
35
66
59
0.5
61
57
53
50
43
41
79
76
ø 4
0.1
-
17
-
15
-
12
-
23
0.2
-
28
-
25
-
21
-
39
0.3
42
33
37
29
31
25
54
44
Standard supply
pressure
Note 1)
47
40
50
38
42
40
68
61
0.5
65
60
57
53
48
46
81
80
ø 6
0.1
-
19
-
18
-
15
-
24
0.2
-
31
-
29
-
26
-
39
0.3
46
35
43
33
38
30
55
47
Standard supply
pressure
Note 1)
53
44
58
51
52
48
69
64
0.5
72
65
66
62
59
56
83
81
Note 1) ZQ05
□
A
:
0.35MPa
、
ZQ07
□
A
、
ZQ10
□
A
:
0.43MPa
、
ZQ000
□
A
:
0.4MPa
12. Handling Precautions
12.1
Exhaust from the Ejector
The exhaust resistance should be as small as possible to obtain the full performance of the
ejector.
There should be no shield around the exhaust port for the silencer exhaust specification. Sound
absorbing material is gradually clogged in the following cases:
- Suction of dust in the environment at the time of adsorption, or
- When the air is not clean enough.
Clogging causes resistance in the ejector's exhaust, decreasing suction flow and vacuum
pressure. (Regular replacement of the sound absorbing material is recommended.)
For the port exhaust type, exhaust resistance occurs depending on the pipe size and length.
12.2
Exhaust Noise from the Ejector
When the vacuum ejector generates vacuum, noise can be heard from the exhaust port when
the standard supply pressure is close to the pressure that generates peak vacuum pressure,
making vacuum pressure unstable.
If the vacuum pressure range is adequate for adsorption, there should not be a problem. If the
noise causes a problem or affects the setting of the pressure switch, change the supply pressure
slightly to avoid the pressure range of the noise.
Vacuum pressure
peak
Region generating
noise
Standard supply pressure
Supply pressure
error
V
a
cu
u
m
p
re
ssu
re
0