Range Selection | McDaniel Controls
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Model R7

Range Selection*

The following are available ranges for Model R7 gauge:

Code
Range
Units
A
0-15
psi
B
0-30
psi
C
0-60
psi
D
0-100
psi
E
0-160
psi
F
0-200
psi
G
0-300
psi
H
0-400
psi
I
0-600
psi
J
0-800
psi
K
0-1000
psi
L
0-1500
psi
M
0-2000
psi
N
0-3000
psi
4k
0-4000
psi
O
0-5000
psi
S
VAC 30"Hg-0
Hg
T
REC 3-15
psi
U
COMP 30" Hg+15
psi
V
COMP 30" Hg+30
psi
W
COMP 30" Hg+60
psi
X
COMP 30" Hg+100
psi
Y
COMP 30" Hg+160
psi
2k
COMP 30" Hg+200
psi
Z
COMP 30" Hg+300
psi

Note — For Compound Inches of Water Column Ranges and Gauge Model Availability: Find the gauge model/type from the McDaniel Gauge Selection Guide, and with your desired compound range, add together the vacuum (negative) and pressure (positive) side. If the sum of the two added together equals a range for the table above then the compound gauge is available. (e.g. — desired range: 50"-0-50" WC, in gauge model "A". Model A is available in 0-100". 50"-0-50" adds up to 100" WC. Your compound range could be 70"-0-30", 30"-0-70", or 60"-0-40", etc.)

PRESSURE AND VACUUM CONVERSIONS
Pounds per Square Inch Bar Kilopascals Inches of Mercury Inches of Water Column
psi bar kPa "Hg "WC
1 .0689 6.894 2.036 27.68
14.5 1 100 29.53* 401.85
.1450 .01 1 .2953 4.014
.4911 .0338 3.386 1 13.60
.0361 .0025 .2490 .0735 1

* 29.92"Hg  =  760 TORR  =  14.7 psi  =  1 Atmosphere  =  760 mm Hg