Installation Precautions, Ranges and Engineering Units
F20B, F22B
Range Codes
T
he gauge model range code indicates the default range. Alternate
default engineering units may be ordered.
Selectable Ranges
Engineering units may be changed to any of those listed in the same
row as shown in the table below.
Conversion
Engineering unit conversions are calculated from the factory default
unit to the newly selected units.
Installation Precautions
4
Read these instructions before using the gauge. Configuration may
be easier before installation. Contact the factory for assistance.
4
These products do not contain user-serviceable parts, except
batteries. Contact us for repairs, service, or refurbishment.
4
Gauges must be operated within specified ambient temperature ranges.
4
Outdoor or wash down applications require a NEMA 4X gauge or
installation in a NEMA 4X housing.
4
Use a pressure or vacuum range appropriate for the application.
4
Use fittings appropriate for the pressure range of the gauge.
4
Due to the hardness of 316 stainless steel, it is recommended that
a thread sealant be used to ensure leak-free operation.
4
For contaminated media use an appropriate screen or filter to
keep debris out of gauge port.
4
Remove system pressures before removing or installing gauge.
4
Install or remove gauge using a wrench on the hex fitting only. Do
not attempt to turn gauge by forcing the housing.
4
Good design practice dictates that positive displacement liquid
pumps include protection devices to prevent sensor damage from
pressure spikes, acceleration head, and vacuum extremes.
p
Avoid permanent sensor damage! Do not apply vacuum to non-
vacuum gauges or hydraulic vacuum to any gauges.
p
Avoid permanent sensor damage! NEVER insert objects into
gauge port or blow out with compressed air.
Gauges are not for oxygen service. Accidental rupture of sensor
diaphragm may cause silicone oil inside sensor to react with
oxygen.
Ranges and Selectable Units
Display Backlighting (BL Models Only)
Display backlighting can be turned on by momentarily pressing
the power button whenever the gauge is on. This also restarts the
auto shutoff timer.
F20B: The backlighting will turn on for 1 minute and then automati-
cally shut off.
F22B: The factory default on-time is 1 minute, but the setup
procedure allows setting it to 1 to 255 minutes, or to 0 to disable
display backlighting.
The red LED display backlighting will not be apparent under bright
lighting conditions.
Power-Up and Normal Operation
Your gauge is ready to use. It was factory
calibrated just prior to shipment with bat-
teries installed.
Press and hold the center power button
for approximately 1 second. The display
is tested.
The full-scale range in the factory default
units is indicated. If the units were changed
by the user, then the full scale range in the
selected engineering units is displayed.
The display test is briefly shown again.
The actual pressure and units are displayed.
The gauge is ready for use and readings are
updated approximately 3 times per second
For gauge reference models occasional
flashing of the minus sign is normal and indi-
cates the gauge is at zero pressure. Absolute
gauges only display zero at full vacuum.
X X X X X
88888
t
s
Zero/Clear
Memory
2
*
psig
200.0
full
psig
0.0
X X X X X
88888
2
scale
Sensor Range
and Units
psi
kPa
MPa
mbar
bar
atm
kg/cm
2
g/cm
2
mmH
2
O cmH
2
O
oz/in
2
ftH
2
O
inH
2
O
mmHg
torr
inHg
–14.7 to 15.0 psig
–14.7 to
15.0
–101.3 to
103.4
–.1013 to
.1034
–1013 to
1034
–1.013 to
1.034
–1.000 to
1.021
–1.033 to
1.055
–1033 to
1055
–1033 to
1055
–235.1 to
240.0
–33.90 to
34.61
–407 to
415
–760 to
7767
–760 to
776
–29.92 to
30.54
–29.9 inHg to
15.0 psig
–14.7 to
15.0
–101.3 to
103.4
–.1013 to
.1034
–1013 to
1034
–1.013 to
1.034
–1.000 to
1.021
–1.033 to
1.055
–1033 to
1055
–1033 to
1055
–235.1 to
240.0
–33.90 to
34.61
–407 to
415
–760 to
776
–760 to
776
–29.92 to
30.54
–29.9 inHg to
100.0 psig
–14.7 to
100.0
–101 to
690
–.101 to
.690
–1.01 to
6.90
–1.00 to
6.81
–1.03 to
7.03
–235 to
1600
–33.9 to
230.7
–407 to
2767
–760 to
5171
–760 to
5171
–29.9 to
203.6
–29.9 inHg to
200.0 psig
–14.7 to
200.0
–101 to
1379
–.101 to
1.379
–1.01 to
13.79
–1.00 to
13.61
–1.03 to
14.06
–235 to
3200
–33.9 to
461.4
–407 to
5534
–29.9 to
407.2
0 to 3.000 psig
3.000
20.68
206.8
.2068 .2041 .2109 210.9
2109
210.9
48.00
6.921 83.0
155.1
155.1
6.108
0 to 5.000 psig
5.000
34.47
344.7
.3447 .3402 .3515 351.5
3515
351.5
80.0
11.54
138.4
258.6
258.6
10.18
15.00 to 0 psi abs
15.00 abs 103.4 abs .1034 abs 1034 abs 1.034 abs 1.021 abs 1.055 abs 1055 abs
1055 abs 240.0 abs 34.61 abs 415.1 abs 775.7 abs 775.7 abs 30.54 abs
0 to 14.70 psig vac 14.70 vac 101.3 vac .1013 vac 1013 vac 1.013 vac 1.000 vac 1.033 vac 1033 vac
1033 vac 235.1 vac 33.90 vac 406.8 vac 760 vac
760 vac
29.92 vac
0 to 15.00 psig
15.00
103.4
.1034
1034
1.034
1.021
1.055
1055
1055
240.0
34.61
415.1
775.7
775.7
30.54
30.00 to 0 psi abs
30.00 abs 206.8 abs .2068 abs 2068 abs 2.068 abs 2.041 abs 2.109 abs 2109 abs
2109 abs 480.0 abs 69.21 abs 830 abs
1551 abs 1551 abs 61.08 abs
0 to 30.00 psig
30.00
206.8
.2068
2068
2.068
2.041
2.109
2109
2109
480.0
69.21
830
1551
1551
61.08
0 to 60.00 psig
60.00
413.7
.4137
4137
4.137
4.083
4.218
4218
4218
960
138.4
1660
3103
3103
122.2
100.0 to 0 psi abs
100.0 abs 689.5 abs .6895 abs 6895 abs 6.895 abs 6.805 abs 7.031 abs 7031 abs
7031 abs 1600 abs 230.7 abs 2767 abs 5171 abs 5171 abs 203.6 abs
0 to 100.0 psig
100.0
689.5
.6895
6895
6.895
6.805
7.031
7031
7031
1600
230.7
2767
5171
5171
203.6
0 to 200.0 psig
200.0
1379
1.379
13.79 13.61
14.06
3200
461.4
5534
407.2
0 to 300.0 psig
300.0
2068
2.068
20.68 20.41
21.09
4800
692.1
610.8
0 to 500.0 psig
500.0
3447
3.447
34.47 34.02
35.15
1154
1018
0 to 1000 psig
1000
6895
6.895
68.95 68.05
70.31
2307
2036
0 to 3000 psig
3000
20.68
206.8
204.1
210.9
6921
6108
0 to 5000 psig
5000
34.47
344.7
340.2
351.5
Shutoff
The auto shutoff timer starts at power up and resets whenever any
button is pressed. The default time is 5 minutes, but can be set for
a variety of times. If on/off operation is selected, the gauge will stay
on until manually shut off or the batteries are depleted. Turn gauge
off when not in use to conserve battery life.
When an auto shutoff time is used, the
display indicates
OFF
five seconds prior
to shutoff. Press the power button to keep
the gauge on.
To shut the gauge off manually, press and
hold (about 5 seconds) the center power
button until
OFF
is displayed.
F
F
O
t
s
Zero/Clear
Memory
*
hold
¼" NPT
2.88"
3.38" Standard
3.5" NEMA 4X
0.75"
2.0"
1.65"
NEMA 4X
3.0"
Standard
X X X X X
t
s
Zero/Clear
Memory
X X X X X
88888
2
Zero display (gauge reference only)
Clear min/max, Up arrow for setup
Display min/max readings
Down arrow for setup
Power button
Turn on backlight (BL versions)
Alphanumeric display
4 digit display
Low battery symbol
Attempting to zero the gauge with pressure
greater than approximately 3% of full-scale
pressure or vacuum will result in an error
condition. The display will alternately indi-
cate
Err 0
and the actual pressure. The
gauge must be powered down to reset the
error condition.
If excessive vacuum is applied to a pres-
sure-only gauge, the display will indicate
-Err
until the vacuum is released. Applying
vacuum to a pressure-only gauge can dam-
age the pressure sensor.
If 112.5% over range pressure is applied , an
out-of-range indication of 1 – – – or 1.–.–.–
will be displayed depending on model.
Error or Out-of-Range Indications
0
r
r
E
r
r
E
- or -
Zero the Display
Press and hold the Zero/Clear button.
Occasional flashing of the minus sign with
zero pressure/vacuum is normal.
The stored zero correction is erased when
the gauge is shut off.
Continue to press the Zero/Clear
button until
oooo
is displayed then release the button.
The gauge in now zeroed.
o
o
o
o
psig
0.0
t
s
Zero/Clear
Memory
*
hold
psig
0. I
t
s
Zero/Clear
Memory
*
This applies to gauge reference models only. Absolute reference
gauges do not use the zero feature since they read atmospheric
pressure under normal conditions.
Be sure the gauge is in the normal operating
mode. The gauge port must be exposed to
normal atmospheric pressure with no pres-
sure or vacuum applied.
cecomp.com
1220 American Way Libertyville, IL 60048
800-942-0315
CECOMP
Div. of
A
BSOLUTE
P
ROCESS
I
NSTRUMENTS
Cecomp maintains a constant effort to upgrade and improve its products.
Specifications are subject to change without notice. See cecomp.com for
latest product information. Consult factory for your specific requirements.
WARNING:
This product can expose you to chemicals including
lead, nickel and chromium, which are known to the State of
California to cause cancer or birth defects or other reproductive
harm. For more information go to www.P65Warnings.ca.gov
