6721-40 HERGA, 6721-40 Datasheet - Page 16

• Manufacturer Part Number: 6721-40
• Description: VACUUM SWITCH
• Manufacturer: HERGA

Specifications of 6721-40

• Connection Size: 4mm
• Contact Configuration: SPCO
• Contact Current @ Contact Voltage Ac Min: 21A
• Contact Current Ac Max: 21A
• Contact Voltage Ac Max: 250V
• External Diameter: 43mm
• External Length / Height: 38mm

Pressure Conversion Table
1999
As a consequence of our policy of continual improvement, we reserve the right to change without notice any detail in this publication. Please see our Conditions of Sale.
P.S.I
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
5.5
Pressure Conversions
Lbf/ln
per square inch (psi)
1 psi = 27.6804 in/H
1 psi = 2.03602 in/Hg
1 psi = 68.9476 mbar
1 psi = 703.082 mm/H
1 psi = 0.0689 bar
1 in/H
1 in/H
1 in/H
2
2
2
2
in/H
O = 25.4 mm/H
O = 1.86832 mm/Hg
O = 2.49089
27.71
30.45
33.22
35.98
38.75
41.52
44.29
47.06
49.82
52.59
55.36
58.13
60.90
63.67
66.43
69.20
71.97
74.74
77.51
80.27
83.04
85.81
88.58
91.35
94.11
96.88
99.65
102.4
105.2
108.0
110.7
113.5
116.3
119.0
121.8
124.6
127.3
130.1
132.9
135.6
138.4
141.2
143.9
146.7
149.5
152.2
= Pounds force
2
0
2.036
2.240
2.443
2.647
2.850
3.054
3.258
3.461
3.665
3.868
4.072
4.276
4.479
4.683
4.886
5.090
5.294
5.497
5.701
5.904
6.108
6.312
6.515
6.719
6.922
7.126
7.330
7.533
7.737
7.940
8.144
8.348
8.551
8.775
8.958
9.162
9.366
9.569
9.773
9.976
10.18
10.38
10.59
10.79
10.99
11.20
in/Hg mm/H
2
O
2
2
O
O
703.1
773.4
843.7
914.0
984.3
1055
1125
1195
1266
1336
1406
1476
1547
1617
1687
1758
1828
1898
1969
2039
2109
2180
2250
2320
2390
2461
2531
2601
2672
2742
2812
2883
2953
3023
3094
2164
3234
3304
3375
3445
3515
3586
3656
3726
3797
3867
2
0 mm/Hg kg/cm
51.75
56.89
62.06
67.23
72.40
77.57
82.74
87.92
93.09
98.26
103.4
108.6
113.8
118.9
124.1
129.3
134.5
139.6
144.8
150.0
155.1
160.3
165.5
170.7
175.8
181.0
186.2
191.3
196.5
201.7
206.9
212.0
217.2
222.4
227.5
232.7
237.9
243.1
248.2
253.4
258.6
263.7
268.9
274.1
279.3
284.4
FOR FURTHER INFORMATION TEL: [phone] FAX: [phone]
Flow
dm
ft
1/Min = Litres per minute
1dm
1dm
1Lt/Min = 0.0353 ft
3
/Min = Cubic feet per minute
.0703
.0773
.0844
.0914
.0984
.1055
.1125
.1195
.1266
.1336
.1406
.1476
.1547
.1617
.1687
.1758
.1828
.1898
.1968
.2039
.2109
.2180
.2250
.2320
.2390
.2461
.2531
.2601
.2672
.2742
.2812
.2883
.2953
.3023
.3094
.3164
.3234
.3304
.3375
.3445
.3515
.3586
.3656
.3726
.3797
.3867
3
/s = Cubic decimetres per second
3
3
/s = 2.119 ft
/s = 60 Litres/Min
2
.0689
.0758
.0827
.0896
.0965
.1034
.1172
.1379
.1448
.1517
.1586
.1655
.1724
.1793
.1862
.1930
.1999
.2068
.2137
.2206
.2275
.2344
.2413
.2482
.2551
.2620
.2689
.2758
.2827
.2896
.2965
.3034
.3103
.3172
.3240
.3310
.3378
.3447
.3516
.3585
.3654
.3723
.3792
1103
1241
1310
bar
3
/Min
68.95
75.84
82.74
89.63
96.52
103.4
110.3
117.2
124.1
131.0
137.9
144.8
151.7
158.6
165.5
172.4
179.3
186.2
193.0
199.9
206.8
213.7
220.6
227.5
234.4
241.3
248.2
255.1
262.0
268.9
275.8
282.7
289.6
296.5
303.4
310.3
317.2
324.0
331.0
337.8
344.7
351.6
358.5
365.4
372.3
379.2
3
mbar
/Min
10340
11030
11720
12410
13100
13790
14480
15170
15860
16550
17240
17930
18620
19300
19990
20680
21370
22060
22750
23440
24130
24820
25510
26200
26890
27580
28270
28960
29650
30338
31030
31720
32400
33100
33780
34470
35160
35850
36540
37230
37920
6895
7584
8274
8963
9652
Pa
6.895
7.584
8.274
8.963
9.652
10.34
11.03
11.72
12.41
13.10
13.79
14.48
15.17
15.86
16.55
17.24
17.93
18.62
19.30
19.99
20.68
21.37
22.06
22.75
23.44
24.13
24.82
25.51
26.20
26.89
27.58
28.27
28.96
29.65
30.34
31.03
31.72
32.40
33.10
33.78
34.47
35.16
35.85
36.54
37.23
37.92
kPa
Liquid
MI = Millilitre
Fl oz = Fluid Ounce
1MI = 0.0352 Fl/oz
1 Litre = 0.21998 UK
Gallon
P.S.I
10.0
11.0
12.0
13.0
14.0
14.7
15.0
16.0
17.0
18.0
19.0
20.0
25.0
5.6
5.7
5.8
5.9
6.0
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.8
8.0
8.2
8.4
8.6
8.8
9.0
9.2
9.4
9.6
9.8
in/H
155.0
157.8
160.5
163.3
166.1
168.8
171.6
174.4
177.2
179.9
182.7
185.5
188.2
191.0
193.8
196.5
199.3
202.1
204.8
207.6
210.4
215.9
221.4
227.0
232.5
238.0
243.6
249.1
254.7
260.2
265.7
271.3
276.8
304.5
332.2
359.8
387.5
406.9
415.2
442.9
470.6
498.2
525.9
553.6
692.0
2
0
11.40
11.60
11.81
12.01
12.22
12.42
12.62
12.83
13.03
13.23
13.44
13.64
13.84
14.05
14.25
14.46
14.66
14.86
15.07
15.27
15.47
15.88
16.29
16.70
17.10
17.51
17.92
18.32
18.73
19.14
19.54
19.95
20.36
22.40
24.43
26.47
28.50
29.93
30.54
32.58
34.61
36.65
38.68
40.72
50.90
in/Hg mm/H
10340
10550
11250
11950
12660
13360
14060
17580
3937
4008
4078
4148
4218
4289
4359
4429
4500
4570
4640
4711
4781
4851
4922
4992
5062
5132
5203
5273
5343
5484
5625
5765
5906
6047
6187
6328
6468
6609
6750
6890
7031
7734
8437
9140
9843
2
0 mm/Hg kg/cm
Force
N = Newton
Lbf = Pounds force
Kgf = Kilogram force
1 N = 0.225Lbf
1 N = 0102Kgf
289.6
294.8
299.9
305.1
310.3
315.5
320.6
325.8
331.0
336.1
341.3
346.5
351.7
356.8
362.0
367.2
372.3
377.5
382.7
387.9
393.0
403.4
413.7
424.1
434.4
444.7
455.1
465.4
475.8
486.1
496.5
506.8
517.1
568.9
620.6
672.3
724.0
760.2
775.7
827.4
879.1
930.9
982.6
1034
1293
.3937
.4007
.4078
.4148
.4218
.4289
.4359
.4429
.4500
.4570
.4710
.4781
.4851
.4921
.4992
.5062
.5132
.5203
.5273
.5343
.5484
.5625
.5765
.5906
.6046
.6187
.6328
.6468
.6609
.6749
.6890
.7031
.7734
.8437
.9140
.9843
1.033
1.055
1.125
1.195
1.265
1.336
1.406
1.758
4640
2
.3861
.3930
.3999
.4068
.4137
.4206
.4275
.4344
.4413
.4482
.4550
.4619
.4688
.4757
.4826
.4895
.4964
.5033
.5102
.5171
.5240
.5378
.5516
.5654
.5792
.5929
.6067
.6205
.6343
.6481
.6619
.6757
.6895
.7584
.8274
.8963
.9652
1.014
1.034
1.103
1.172
1.241
1.310
1.379
1.724
bar
386.1
393.0
399.9
406.8
413.7
420.6
427.5
434.4
441.3
448.2
455.0
461.9
468.8
475.7
482.6
489.5
496.4
503.3
510.2
517.1
524.0
537.8
551.6
565.4
579.2
592.9
606.7
620.5
634.3
648.1
661.9
675.7
689.5
758.4
827.4
896.3
965.2
mbar
1014
1034
1103
1172
1241
1310
1379
1724
Weight
Kg = Kilogram
Lb = Pound
1Kg = 2.2045Lb
101400 101.4
103400 103.4
110300 110.3
117200 117.2
124100 124.1
131000 131.0
137900 137.9
172400 172. 4
38610
39300
39990
40680
41370
42060
42750
43440
44130
44820
45500
46190
46880
47570
48260
48950
49640
50330
51020
51710
52400
53780
55160
56540
57920
59290
60670
62050
63430
64810
66190
67570
68950
75840
82740
98630
96520
Pa
ISSUE 01
38.61
39.30
39.99
40.68
41.37
42.06
42.75
43.44
44.13
44.82
45.50
46.19
46.88
47.57
48.26
48.95
49.64
50.33
51.02
51.71
52.40
53.78
55.16
56.54
57.92
59.29
60.67
62.05
63.43
64.81
66.19
67.57
68.95
75.84
82.74
89.63
96.52
kPa