![background image](http://html1.mh-extra.com/html/carrier/pro-dialog-control-4/pro-dialog-control-4_user-manual_2562390018.webp)
3.2 - Pressure sensors
They are used to measure in each circuit :
w
Discharge gas pressure
w
Suction pressure
w
Economizer pressure
and in each compressor :
w
Oil pressure
w
Economizer pressure on first compressor and also in the second compressor if unit is not equipped
with economizer
They are electronic sensors which linearise the output signal and deliver a 0 to 5 Vdc to either the basic board or
to an analog board. Three types of sensors are used.
3.2.1 - High pressure side sensors
They are used to measure discharge pressure and oil pressures when large band oil pressure transducer is not
selected.
Carrier part: OP12DA039
High pressure side transducer curve
3.2.2 - Large band pressure sensors
They are used to measure oil pressures for unit operating with low ambient (when large band oil pressure
transducer is selected).
Carrier part:
OP12DA057
Large band oil pressure transducer curve
CARRIER SA
USER'S GUIDE FOR
30GX&HX PRO_DIALOG 4 V.2
ECG-UG-02-002
Rev: original
Page: 17/98
©
C
ARRIER
S
.
A
NOT
TO
BE
DISCLOSED
TO
PERSONS
OUTSIDE
CARRIER
ORGANIZATION
50
100
150
200
250
450
500
689
2068
2414
3103
2758
4
2
0
Vo
lt
a
g
e (
VDC)
Vo
lt
a
g
e (
VDC)
Vo
lt
a
g
e (
VDC)
Vo
lt
a
g
e (
VDC)
kPa
PSI
3
1
5
3447
1724
345
1034
Pressure
Pressure
Pressure
Pressure
1379
350
300
400
-6.6
100
155
420
500
1904
2252
2895
2670
4
2
Vo
lt
a
g
e (
VDC)
Vo
lt
a
g
e (
VDC)
Vo
lt
a
g
e (
VDC)
Vo
lt
a
g
e (
VDC)
kPa
PSI
3
1
5
3447
1484
-45
689
Pressure
Pressure
Pressure
Pressure
1068
327
276
387
50
345
215
Downloaded from
www.Manualslib.com
manuals search engine