Page
Page J-2
J-2
LASAIR
LASAIR II
II Operator’s
Operator’s Manual
Manual
Appendix J: 4-20 mA Input and Output
Appendix J: 4-20 mA Input and Output
4-20
4-20 mA Input Setup Values
mA Input Setup Values
Scale = Total range
Scale = Total range
÷
÷
16
16
Offset = Minimum value
Offset = Minimum value
Units = Unit of measure
Units = Unit of measure
Examples of Setup for Each
Examples of Setup for Each Accessory
Accessory
••
Temperature
Temperature
••
Relative Humidity (R/H)
Relative Humidity (R/H)
••
Differential Air Pressure (DAP)
Differential Air Pressure (DAP)
••
Air Velocity
Air Velocity
E
En
ng
glliissh
h
M
Meettrriicc
Range
Range
0–100
0–100
°°
F
F
--5
5
tto
o
5
55
5
°°
C
C
Scale
Scale
6
6..2
25
5
3
3..7
75
5
Offset
Offset
0
0
-5
-5
Units
Units
°°
F
F
°°
C
C
Range
Range
0–100
0–100
%
%
Scale
Scale
6.25
6.25
Offset
Offset
0
0
Units
Units
%
%
E
En
ng
glliissh
h
M
Meettrriicc
Range
Range
0–
0–0.
0.25in
25inch
ches o
es of wa
f wate
terr
0–
0–6.
6.35mm o
35mm of wa
f wate
ter
r
Scale
Scale
1
15
5..6
62
25
5
0
0..3
39
97
7
Offset
Offset
0
0
0
0
Units
Units
MIN (mili-inch) H
MIN (mili-inch) H
2
2
O
O
m
mm
m
H
H
2
2
O
O
E
En
ng
glliissh
h
M
Meettrriicc
Range
Range
0–2
0–200
00 Fee
Feet p
t per
er Min
Minute
ute
0–1
0–1.01
.016 m
6 mete
eters
rs per
per sec
second
ond
Scale
Scale
1
12
2..5
5
..0
06
63
35
5
Offset
Offset
0
0
0
0
Units
Units
F
Feeeet
t p
peer
r M
Miin
nu
uttee
M
Meetteerrs
s p
peer
r S
Seecco
on
nd
d