Cleaveland Controls RFS-4150 빠른 시작 매뉴얼 - 페이지 2
{카테고리_이름} Cleaveland Controls RFS-4150에 대한 빠른 시작 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Cleaveland Controls RFS-4150 2 페이지. Air pressure sensing switch with adjustable set point
페이지 인쇄Positive Pressure Only: Connect the
sample line to inlet H; inlet L remains open
to the atmosphere.
·
Negative Pressure Only: Connect the
sample line to inlet L; inlefH remains open
to the atmosphere.
·
·
Two Negative Samples: Connect the higher
negative sample to inlet L. Connect the lower
negative sample to inlet' H.
\
Two Positive Samples: Connect the higher
' positive sample to inlet
~
Connect the lower
positive sample to inlet L.
\
One·Positive and One Negative Sample:
Connect the positive sample to inlet H. Con-
nect, the negative sample to inlet
L,.
Figure 4
To prove excessive air flow or pressure:
...,.NO
ALARM
c
e-_____-
~--------~~N~~c+-C-0-N-TROL
To prove insufficient air flow or pressure:
JlO CONTROL
c
0--___:__""
....... Q--1----
~--------~N~C ALARM
4.098(104)
ELECTRICAL CONNECTIONS
(FIGURES 3 & 4}
Before pressure is applied to the diaphragm,
the switch contacts will be in the normally
closed (NC) position. Wire control and alarm
functions as shown in Figure 4.
FIELD ADJUSTMENT
The adjustment range of an RFS-4150 Air-
Switch is 0.15±0.02" we to 5.0"wc.
To adjust the set point,
t~rn
the adjusting
screw counterclockwise .until motion has
stopped. Next, turn the adjusting screw 5
complete turns clockwis'll· to engage the
spring.
;•
From this p~t, the next eight turns will be
used forthei actual calibratibn. Each full turn
represents
a~proximate'iy
0.61"
we.
Please note: To properly calibrate an air
switch, a digital manometer or other mea-
suring device should be used to confirm the
actual set point.
'
·
1 - - - - -
.3.066(78)----1
Reference Dimensions in Inches (Millimeters)