Barksdale 8000 Series Panduan Petunjuk Pengoperasian - Halaman 6

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Halaman Cetak
Adjustable ranges
Pressure
Adjustable ranges
Adjustable ranges
range
(decreasing pressure)
(increasing pressure)
[bar] (psi)
[bar]
(psi)
[bar]
0.4...5.7
0.6... 6.0 (8.7...87)
1
A
(5.8...82)
2.0...17.0
3.0... 20.0 (45.0...250)
2
B
(29.0...246)
3.0...41.0
4.0... 45.0 (60.0...650)
3
C
(43.0... 600)
3 ...160
5...180
4
D
(43...2320)
30...300
50...350
5
E
(430...4300)
55...520
80...600
6
F
(800...7550)
* Test pressure 200 bar (2900 psi) upon request, results in less lifetime of the switch.
Electrical Ratings Silver Contacts
Silver contacts
Inductive load
30 V =
2.0 A
250 V =
0.03 A
250 V
2.0 A
2.0 A
125 V
Minimum load values: 10 mA at 12 V DC
IMPORTANT
We recommend to use a prefuse of the maximum current rating from the table above according to the
load switched.
Electrical Ratings Gold Plated Contacts
Gold plated contacts
Res. Load
≤ 300 mV DC
≤ 400 mA
≤ 30 V DC
≤ 4 mA
U x I = max 0.12 VA
Minimum load values: 0 mA / 0 V DC
IMPORTANT
We recommend to use a prefuse of the maximum current rating from the table above according to the
load switched.
We recommend gold plated contacts for all intrinsically safe and other applications with low
voltage/power.
10
Max. operating
Max.
Proof Press.
pressure
hyster
esis
(end
of
range)
(psi)
[bar]
(psi)
[bar]
Diaphragm
50
725
15 %
50
725
50
725
Piston
(75... 2600)
250
3600
15 %
(750...5000)
450
6500
(1200...8700)
600
8700
Resistive load
5.0 A
0.2 A
5.0 A
5.0 A
Intrinsically safe circuits
U
28 V=
max
I
50 mA
max
Approval data for pressure switches type Series 8000 with PL1, PL4 connection
Approval:
Certificate no.:
Permissible ambient
temperature:
(psi)
Electrical data for
intrinsically safe application:
80 *
(1200)
Standards applied:
80 *
(1200)
80 *
(1200)
Approval data for pressure switch type Series 8000 with PL2, PL3, CA, CD1 connection
Approval:
600
(8700)
600
(8700)
Certificate no.:
900
(15000)
Permissible ambient
temperature:
Electrical data for
intrinsically safe application:
Standards applied:
UL listed
cULus,
Type 4, file No. E42816
Operating life time
Normal expected service life (expressed in the number of cycles over the full adjustment range) is
appr. 1 million for the pressure switch. This may be extended to 2.5 million cycles max. if only a
part of the adjustment range is used (about 20%).
Switch sensor life may also be effected negatively by:
Media not compatible with the wetted materials.
Rapid pressure changes in the system, or in case of diaphragm switches >30 cycles/minute,
in case of piston switches >60 cylces/minute.
System cycling pressure exceeding the top of the adjustable range.
The proof pressure must never be exceeded, otherwise the switch may be damaged. Careful
selection of the pressure range can have a positive effect on the service life of the switch.
II 1 G D
Ex ia IIB T6
Ex ia D 20 T100
ISSeP08ATEX016X
-40 °C ... +75 °C
Ui = 28V
Ii = 50 mA
Ci = 40 pF
Li = 4 µH
IEC 60079-0, IEC 60079-11, IEC 60079-26,
IEC 61241-0 and IEC 61241-11
II 1 G D
Ex ia IIC T6
Ex ia D 20 T100
ISSeP08ATEX016X
-40 °C ... +75 °C
Ui = 28V
Ii = 50 mA
Ci = 40 pF
Li = 4 µH
IEC 60079-0, IEC 60079-11, IEC 60079-26,
IEC 61241-0 and IEC 61241-11
11