Barksdale KLK Series 사용 설명서 - 페이지 4
{카테고리_이름} Barksdale KLK Series에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Barksdale KLK Series 6 페이지. Compact pressure switches
페이지 인쇄
Wiring Code for all Types (Contact status at atm. pressure)
KD1-K2
c
NC
NO
KD1-A1
Normally Open NO
c
NC
NO
Normally Closed NC
c
NC
NO
KLK/KLM
-K2
c
NC
NO
-S1
2
NO
3
1
NC
not
Fig. 5:
Wiring Code
6
C
= green
NC = white
NO = brown
C
= housing
NC = not connected
NO = spade connector 6.3 - DIN 46244
C
= housing
NC = spade connector 6.3 - DIN 46244
NC = not connected
C
= green
NC = white
NO = brown
Use in Hazardous Locations
The pressure switches to be used in hazardous locations are principally designed for intrinsically
safe circuits i following the applicable regulations and are provided with a blue plate bearing the
words "For intrinsically safe Ex i application".
They must be operated with a switch amplifier as shown in Fig. 6. They are only for use in
approved intrinsically safe circuits.
Switches with explosion-proof enclosures must be operated in accordance with their approval.
Approval class and identification characteristics according to type plate information must always be
observed.
EC-design approved types are marked with a type plate according to ATEX 94/9/EC.
The wiring between switch and Ex i isolation amplifier must meet the local safety requirements.
The customer must provide for a highly conductive connection between switch and grounding.
Unprotected area
Zener barrier type
Switch amplifier NAMUR
Fig. 6:
Operation of pressure switches in intrinsically safe areas
7
Maintenance/Cleaning
Maintenance
The pressure switch is maintenance free. Checking the set points lies within the discretion of the
user. The usual preventive maintenance work in accordance with the PED and ATEX guidelines
must always be carried out.
Ex ia area
c
NO
NC
GRD
7