Cecomp F20B User manual

Cecomp®Battery Powered Digital Pressure Gauges w. Memory Options & Selectable Units F20B, F22B
Ranges and Resolution
See table below for standard ranges and units
Resolution is fixed for each engineering unit
Accuracy
Accuracy includes linearity, hysteresis, repeatability
Standard accuracy: ±0.25% of full scale ±1 least significant digit
HA accuracy option: ±0.1% FS ±1 LSD, see ranges for availability
Sensor hysteresis: ±0.015% FS, included in accuracy
Sensor repeatability: ±0.01% FS, included in accuracy
Display
3 readings per second nominal display update rate
4 digit LCD, 0.5" H and 5 character 0.25" H alphanumeric
BL models: red LED backlight
Batteries, Battery Life
B: 2 AA alkaline, approx. 2000 hours
BL: 2 AA alkaline, approx. 150 to 1500 hours depending on
backlight usage
Controls and Functions
Three button keypad: Zero/clear, on/off, memory
BL models: Backlight active for 1 minute (user configurable)
F20B Memory
-M4: 4 peak reading memory, settable to MEM 1 ~ MEM 4 or
4 wheel designations: LF, RF, LR, RR
-M8: 8 peak reading memory, MEM 1 ~ MEM 8
F22B Min/Max Memory
Minimum and/or maximum readings stored in memory, readings
cleared or stored at shutoff. User configurable.
Auto Shutoff
User selectable 1 minute to 8 hours or front button on/off
Factory default 5 minutes, unless other time is specified
O±0.25% Test Gauge Accuracy, ±0.1% Optional
O316L Stainless Steel Wetted Parts
OKeypad Selectable Units and Auto Shutoff Times
OStore Readings in Memory
F20B, F22B
F20BN, F22BN
NEMA 4X
HHHHHH
HHHHH
HHHHHH
HHHHH
HHHHHH
HHHHH
HHHHHH
HHHHH
HHHHHH
Made in USA
Calibration
Zero button for gauge reference ranges
Pass code protected calibration via keypad
Non-interactive zero, span, and linearity, ±10% of range
Weight
Gauge: 9 ounces (approximately)
Shipping: 1 pound (approximately)
Materials
Standard: Extruded aluminum case, epoxy powder coated, ABS/
polycarbonate bezel, front and rear gaskets, polycarbonate label.
Optional -MC aluminum bezel.
NEMA 4X: ABS/polycarbonate case, rear gasket, polycarb. label
Connection and Material
1/4" NPT male fitting
All wetted parts are 316L stainless steel
Overpressure, Burst, Vacuum Service
3000 psig sensor: 5000 psig overpressure
5000 psig sensor: 7500 psig overpressure
All others: 2 X pressure range overpressure
Burst pressure: 4 X sensor pressure rating, or 10,000 psi,
whichever is less
Vacuum service: 15 psia, 15 psig, ±15 psig, 30 psia, 100 psia,
100 psig, 200 psig
Environmental Temperatures
Storage temperature: –40 to 203°F (–40 to 95°C)
Operating: –4 to 185°F (–20 to 85°C)
Compensated range: 32 to 158°F (0 to 70°C)
Dimensions
See next page
Sensor Ranges and Engineering Units ‡ -HA option not available Consult factory for special units
3 psig ‡Res 15 psig vac ‡Res 30 psia Res –15V100psig ‡Res 300 psig Res
3PSIG .001 100KPAVAC .1 2KGCMA .001 –15V100PSIG .1 300PSIG .1
6INHGG .001 0.1MPAVAC .0001 2ATMA .001 –30INHG/100PSIG .1 610INHGG .1
85INH2OG .1 1BARVAC .001 30 psig Res –30V200INHGG .1 4800ZING 1
50ZING .01 1KGCMVAC .001 30PSIG .01 –400V2770INH2OG 1700FTH2O .1
210GCMG .1 1ATMVAC .001 60INHGG .01 –240V1600ZING 12000KPAG 1
150MMHGG .1 15 psig Res 850INH2OG 1–760V5200MMHGG 12MPAG .001
150TORRG .1 15PSIG .01 480ZING .1 –760V5200TORRG 120BARG .01
200MBARG .1 30INHGG .01 2100GCMG 1–100V700KPAG 120KGCMG .01
200CMH2OG .1 400INH2OG .1 1600MMHGG 1–0.1V0.7MPAG .001 20ATMG .01
2000MMH2OG 1240ZING .1 1600TORRG 1–1V7BARG .01 500 psig Res
7FTH2O .001 1000GCMG 12000MBARG 1–1V7KGCMG .01 500PSIG .1
20KPAG .01 760MMHGG .1 2100CMH2OG 1–1V7ATMG .01 1020INHGG 1
5 psig ‡Res 760TORRG .1 70FTH2O .01 100 psig Res 1150FTH2O 1
5PSIG .001 1000MBARG 1200KPAG .1 100PSIG .1 3500KPAG 1
10INHGG .01 1000CMH2OG 10.2MPAG .0001 200INHGG .1 3.5MPAG .001
140INH2OG .1 35FTH2O .01 2BARG .001 2770INH2OG 135BARG .01
80ZING .1 100KPAG .1 2KGCMG .001 1600ZING 135KGCMG .01
350GCMG .1 0.1MPAG .0001 2ATMG .001 7000GCMG 135ATMG .01
260MMHGG .1 1BARG .001 60 psig Res 5200MMHGG 11000 psig Res
260TORRG .1 1KGCMG .001 60PSIG .01 5200TORRG 11000PSIG 1
350MBARG .1 1ATMG .001 120INHGG .1 7000MBARG 12040INHGG 1
350CMH2OG .1 ±15 psig ‡Res 1660INH2OG 17000CMH2OG 12300FTH2O 1
3500MMH2OG 1±15PSIG .01 960ZING 1230FTH2O .1 7000KPAG 1
12FTH2O .01 –30INHG/15PSIG .01 4200GCMG 1700KPAG .1 7MPAG .0001
35KPAG .01 ±30INHGG .01 3100MMHGG 10.7MPAG .0001 70BARG .01
15 psia Res ±400INH2OG 13100TORRG 17BARG .001 70KGCMG .01
15PSIA .01 ±240ZING .1 4100MBARG 17KGCMG .001 70ATMG .01
30INHGA .01 ±1000GCMG 14200CMH2OG 17ATMG .001 2000 psig Res
400INH2OA .1 ±760MMHGG 1140FTH2O .1 –15V200 psig ‡Res 2000PSIG 1
240ZINA .1 ±760TORRG 1400KPAG .1 –15V200PSIG .1 4070INHGG 1
1000GCMA 1±1000MBARG 10.4MPAG .0001 –30INHG/200PSIG .1 4600FTH2O 1
760MMHGA .1 ±1000CMH2OG 14BARG .001 –30V400INHGG .1 14MPAG .01
760TORRA .1 ±100KPAG .1 4KGCMG .001 –400V5500INH2OG 1140BARG .1
1000MBARA 1±0.1MPAG .0001 4ATMG .001 –240V3200ZING 1140KGCMG .1
1000CMH2OA 1±1BARG .001 100 psia Res –100V1400KPAG 1140ATMG .1
100KPAA .1 ±1KGCMG .001 100PSIA .1 –0.1V1.4MPAG .001 3000 psig Res
0.1MPAA .0001 ±1ATMG .001 200INHGA .1 –1V14BARG .01 3000PSIG 1
1BARA .001 30 psia Res 2770INH2OA 1–1V14KGCMG .01 6100INHGG 1
1KGCMA .001 30PSIA .01 1600ZINA 1–1V 14ATMG .01 6900FTH2O 1
1ATMA .001 60INHGA .01 7000GCMA 1200 psig Res 20MPAG .01
15 psig vac ‡Res 850INH2OA 15200MMHGA 1200PSIG .1 200BARG .1
15PSIVAC .01 480ZINA .1 5200TORRA 1400INHGG .1 200KGCMG .1
30INHGVAC .01 2100GCMA 17000MBARA 15500INH2OG 1200ATMG .1
400INH2OVAC .1 1600MMHGA 17000CMH2OA 13200ZING 15000 psig Res
240ZINVAC .1 1600TORRA 1700KPAA .1 480FTH2O .1 5000PSIG 1
1000GCMVAC 12000MBARA 10.7MPAA .0001 1400KPAG 135MPAG .01
760MMHGVAC .1 2100CMH2OA 17BARA .001 1.4MPAG .001 350BARG .1
760TORRVAC .1 200KPAA .1 7KGCMA .001 14BARG .01 350KGCMG .1
1000MBARVAC 10.2MPAA .0001 7ATMA .001 14KGCMG .01 340ATMG .1
1000CMH2OVAC 12BARA .001 14ATMG .01
How to Specify Housing Backlit Memory
F20B range - M4 - options Standard no
4 max
reading
F20BBL range - M4 - options Yes
F20BN range - M4 - options NEMA 4X no
F20BNBL range - M4 - options Yes
F20B range - M8 - options Standard no
8 max
reading
F20BBL range - M8 - options Yes
F20BN range - M8 - options NEMA 4X no
F20BNBL range - M8 - options Yes
F22B range - options Standard no
Min/max
F22BBL range - options Yes
F22BN range - options NEMA 4X no
F22BNBL range - options Yes
Quick Link: cecomp.com/bat
G gauge reference pressure
VAC gauge reference vacuum
A absolute reference
psi = PSI
inHg = INHG
oz/in2= ZIN
inH2O = INH2O
ftH2O = FTH2O
mmHg = MMHG
torr = TORR
mmH2O = MMH2O
kg/cm2= KGCM
g/cm2= GCM
kPa = KPA
MPa = MPA
mbar = MBAR
bar = BAR
cmH2O = CMH2O
atm = ATM
Range—See table at left. Select a range code for default units.
Please specify if vacuum gauge requires a minus sign.
Options—add to end of model number. See price list for details.
HA High accuracy, ±0.1% FS ±1 LSD. See range table.
PM Panel mount, 4.1" x 4.1", n/a NEMA 4X
FP Sealed housing, CC for high-humidity food processing
applications. NEMA models in absolute reference only.
MC Metal front cover instead of plastic, n/a NEMA 4X
CS Case bottom stiffener plate, n/a NEMA 4X
CC Moisture resistant circuit board conformal coating
TP Top port, gauge port on top of case, n/a NEMA 4X
SM Surface mount plate, n/a NEMA 4X
CD Calibration data; 5 test points and date
NC NIST traceability documentation, 5 points and date
Accessories—order separately
CON14SS
Quick connector to install or remove gauge with-
out tools. 304 stainless steel, urethane seal.
SCR14SS
Filter screen fitting keeps debris out of gauge
sensor. For food vacuum packaging applications.
303SS body, 100 micron 304SS screen.
RB
High visibility orange rubber boot protects gauge
for portable applications. Not available with NEMA
4X models.
TP
Top gauge port. Primarily used with tire pressure
applications. Not available with NEMA 4X models.
© 08-18
cecomp.com
1220 American Way Libertyville, IL 60048
800-942-0315
CECOMPDiv. of ABSOLUTE PROCESS INSTRUMENTS

Installation Precautions, Ranges and Engineering Units F20B, F22B
Range Codes
The 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
4Read these instructions before using the gauge. Configuration may
be easier before installation. Contact the factory for assistance.
4These products do not contain user-serviceable parts, except
batteries. Contact us for repairs, service, or refurbishment.
4Gauges must be operated within specified ambient temperature ranges.
4Outdoor or wash down applications require a NEMA 4X gauge or
installation in a NEMA 4X housing.
4Use a pressure or vacuum range appropriate for the application.
4Use fittings appropriate for the pressure range of the gauge.
4Due to the hardness of 316 stainless steel, it is recommended that
a thread sealant be used to ensure leak-free operation.
4For contaminated media use an appropriate screen or filter to
keep debris out of gauge port.
4Remove system pressures before removing or installing gauge.
4Install or remove gauge using a wrench on the hex fitting only. Do
not attempt to turn gauge by forcing the housing.
4Good 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.
XXXXX
8
8
8
8
8
ts
Zero/Clear Memory
2
*
psig
200.0
full
psig
0.0
XXXXX
8
8
8
8
82
scale
Sensor Range
and Units psi kPa MPa mbar bar atm kg/cm2g/cm2mmH2O cmH2O oz/in2ftH2O inH2O 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
0to 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
0to 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
0to 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
0to 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
0to 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
0to 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
0to 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
0to 200.0 psig 200.0 1379 1.379 13.79 13.61 14.06 3200 461.4 5534 407.2
0to 300.0 psig 300.0 2068 2.068 20.68 20.41 21.09 4800 692.1 610.8
0to 500.0 psig 500.0 3447 3.447 34.47 34.02 35.15 1154 1018
0to 1000 psig 1000 6895 6.895 68.95 68.05 70.31 2307 2036
0to 3000 psig 3000 20.68 206.8 204.1 210.9 6921 6108
0to 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.
FFO
ts
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
XXXXX
ts
Zero/Clear Memory
XXXXX
8
8
8
8
82
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
0rrE
rrE
- 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.
oooo
psig
0.0
ts
Zero/Clear Memory
*
hold
psig
0. I
ts
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
CECOMPDiv. of ABSOLUTE PROCESS INSTRUMENTS
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

Instructions F20B, F22B
Enter the pass code. 3510 is the factory
default, but it is user-modifiable.
Use the sor tbuttons to set the left-most
digit to 3.
Gauge Configuration
The gauge is designed to use a 4 digit pass code to enter the
configuration modes. This is to prevent unauthorized changing of
settings.
With the gauge off, press and hold the s
button. Then press the Power button.
Release all buttons when the display indi-
cates CFG. The gauge firmware version is
also displayed.
hold
ts
Zero/Clear Memory
*
1
*
2
GFC
firmware version
power up sequence
____
CFGPC
The gauge then goes through the normal
power up sequence.
The display prompts for entry of the configu-
ration pass code (CFGPC), with the first
underscore blinking.
Note: The gauge will automatically revert to normal operation if no
buttons are pressed for approximately 15 seconds. To cancel and
return to normal operation, press and release the Power button
without entering any pass code characters.
ts
Zero/Clear Memory
*
*
___3
CFGPC
- or -
__53
CFGPC
ts
Zero/Clear Memory
*
___3
CFGPC
_I53
CFGPC
0I53
CFGPC
ts
Zero/Clear Memory
*
0I53
CFGPC
Press and release the Power button to index
to the next position.
The 3 will remain, and the second position
will be blinking.
Use the sor tbuttons to select 5.
Press and release the Power button to index
to the next position. 3 5 will remain, and the
third position will be blinking.
Use the sor tbuttons to select 1.
Press and release the Power button to index
to the next position. 3 5 1 will remain, and
the fourth position will be blinking.
Use the sor tbuttons to select 0.
Press and release the Power button to pro-
ceed with configuration procedures.
Note: If an incorrect pass code is entered,
the gauge will return to the start of the pass
code entry sequence.
Gauge Configuration—User or Factory
Upon successful pass code entry, the upper
display will be blank, and the lower sec-
tion will display USER. If User is not
displayed press and release the tbutton
to change the lower display to USER. With
User selected, the gauge configuration can
be modified as described in the following
sections.
Press and release the Power button to con-
tinue with configuration.
F20B: Go to Engineering Unit Selection to
continue user configuration.
F22B: Go to the F22B Min/Max Setup sec-
tion to continue user configuration.
If Factory (FCTRY) is selected, the user
configuration will be replaced by the con-
figuration as it left the factory. To select
Factory, press and release the sbutton.
The lower display will indicate FCTRY.
Press and release the Power button to
restore the factory configuration and restart the gauge.
ts
Zero/Clear Memory
*
USER
ts
Zero/Clear Memory
*
USER
ts
Zero/Clear Memory
*
FCTRY
*
then
- or -
Enter Configuration Pass Code
With the gauge powered up and in the
normal operating mode, press and release
the Memory button to sequence through the
memory locations.
When the Memory button is pressed the
gauge is in the peak hold mode. A new
higher reading will replace an existing read-
ing, but a pressure reading lower then the
one displayed will not be saved.
When desired memory location is displayed,
take the pressure reading. The peak reading
will be captured.
Remove the gauge from the pressure source
and press the memory button for the next
location.
Repeat until all readings are taken.
The readings will be saved even if the
gauge is shut off.
Press and release the Power button to exit
the memory mode and return to live pres-
sure readings.
F20B Memory
ts
Zero/Clear Memory
*
00
PSIG
Clear a Memory Location
Press and release the Memory button until
the value to be cleared is displayed.
Press and hold the Zero/Clear button.
Release the button when clr is displayed.
The reading for the indicated memory loca-
tion will be cleared.
With a gauge reference models if no pres-
sure is applied, the value will return to zero.
If pressure is applied the new pressure
reading will be stored in memory.
Absolute reference models will store the
current atmospheric pressure reading if the
gauge port is open to atmosphere.
Press and release the Power button to exit
the memory mode and return to live pres-
sure readings.
00
MEM I
psig
0.0
0002
MEM I
t
s
Zero/Clear Memory
*
F22B Min/Max Memory
Press and release the Memory button to
view the maximum stored value.
The center power button may be pressed
at any time to return to the normal display
mode.
The gauge may be left in the maximum dis-
play mode if desired. The maximum reading
will be continuously displayed, stored and
updated.
Press and release the Memory button to
view the minimum stored value.
For many applications it may be best to
bring the system up to normal pressure and
then clear the minimum value.
The gauge may be left in the minimum dis-
play mode if desired. The minimum reading
will be continuously displayed, stored and
updated.
Press and release the center power button
to return to the normal display mode.
The Min/Max setup procedure in the Gauge Configuration > F22B
Min/Max Setup section may be used to configure the gauge to
capture both maximum and minimum values, the maximum value
only, or the minimum value only. Only the configured values will
be displayed when the memory button is pressed. The gauge also
may be configured to erase or save the readings when the gauge
powers down.
The Min/Max readings are captured at the rate of 3 times per
second. Note that if a brief pressure deviation occurs, it may not be
captured. The readings are captured any time the gauge is on and
not in the configuration or calibration mode.
psig
200.0
205.0
MAX
psig
200.0
i92.0
MIN
ts
Zero/Clear Memory
*
ts
Zero/Clear Memory
*
ts
Zero/Clear Memory
*
ts
Zero/Clear Memory
*
0002
MEM
00
MEM I
rlc
MEM I
ts
Zero/Clear Memory
*
MIN
MAX
or
or
ts
Zero/Clear Memory
*
Engineering Unit Selection
With the gauge in the user configuration
mode, the upper display will be blank with
the engineering units in the lower display.
Use the sand tbuttons to navigate
through the list of engineering units.
Available engineering units depend on the
sensor range.
For compound gauges the choice of CMPND
(inHg/psig) or -/+EU (±Engineering Units)
will apear. The gauge must be changed
to -/+EU first before alternate engineering
units may be selected.
When the desired units are displayed, press
and release the Power button to save your
selection and move to the next parameter.
ts
Zero/Clear Memory
*
*
PSIG
- or -
INHG
ts
Zero/Clear Memory
*
Auto Shutoff Time Selection
The auto shutoff time is displayed on the
upper display. The lower display will indicate
AST M if the time displayed is in minutes
or AST H if it is in hours.
Use the sand tbuttons to select 0
(manual shutoff), 1, 2, 5, 10, 15, 20 or 30
minutes, or 1, 2, 4, or 8 hours.
A setting of zero disables the auto shutoff
timer. This requires using the Power button
to shut the gauge off.
When the desired time is displayed, press and
release the Power button to save your selection.
If the gauge was ordered with a custom
shutoff time it will be unavailable if the time
is changed. Reset the gauge to the original factory defaults as
described previously to restore the custom time.
F20B: Go to the appropriate F20B Memory section on the next
page to continue user configuration.
F22B: Go to the F22B Backlight Shutoff Time section on the next
page to continue user configuration.
5
AST M
I
AST H
ts
Zero/Clear Memory
ts
Zero/Clear Memory
*
*
- or -
*
After the center power button is pressed
when in user configuration mode, the dis-
play indicates MX/MN.
Use the sor tbuttons to select the
desired configuration.
MX/MN to capture both maximum and
minimum readings.
--/MN to capture minimum readings only.
MX/-- to capture maximum readings only.
Press and release the power button to save
the user configuration and move to the next
setup parameter.
After the center power button is pressed
when in user MX/MN configuration mode,
the upper display indicates clr.
Use the sbutton to select AUTO and the
or tbutton to select MAN.
When the lower display indicates AUTO,
the maximum and/or minimum readings will
be automatically cleared when the gauge is
powered off.
When the lower display indicates MAN, the
maximum and/or minimum readings will
be retained in memory after the gauge is
powered off. The readings can be cleared
manually.
Press and release the power button to save
the user configuration and move to the next
setup parameter.
F22B Min/Max Setup
MX/--
MX/MN
--/MN
MX/--
MX/MN
MAN
rlc
man
- or -
*
*
rlc
Auto
man
ts
Zero/Clear Memory
ts
Zero/Clear Memory
*
*
- or -
ts
Zero/Clear Memory
*
ts
Zero/Clear Memory
ts
Zero/Clear Memory
ts
Zero/Clear Memory
*
cecomp.com
1220 American Way Libertyville, IL 60048
800-942-0315
CECOMPDiv. of ABSOLUTE PROCESS INSTRUMENTS

Instructions F20B, F22B
Setup and Preparation
Gauges are calibrated at the factory using equipment traceable
to NIST. There is no need to calibrate the gauge before putting
it into service. Calibration should only be performed by qualified
individuals using appropriate calibration standards and procedures.
Calibration intervals depend on your quality control program
requirements, although many customers calibrate annually.
The calibration system must be able to generate and measure pres-
sure/vacuum over the full range of the gauge and should be at least
four times more accurate than the gauge being calibrated.
A vacuum pump able to produce a vacuum of 100 microns (0.1 torr
or 100 millitorr) or lower is required for vacuum gauges.
Allow the gauge to acclimate to ambient temperature for 20 minutes.
Install fresh batteries.
Entering Calibration Mode
With the gauge off, press and hold the tbutton. Then press the
Power button. Release all buttons when the display indicates CAL.
The display begins by indicating the full-scale positive pressure
rating of the gauge in the engineering units as configured by the
factory, and then shows all display.
Before the gauge enters the Calibration Mode, the display ini-
tially indicates _ _ _ _ with the first underscore blinking, and with
CALPC (calibration pass code) on the lower display.
Enter the 3510 pass code as described in the Configuration Pass
Code section.
Calibration Mode
The gauge enters and remains in the Calibration Mode until
restarted manually or power is removed. Features not related to
calibration are disabled and compound range models are set for the
same engineering units for pressure and for vacuum.
The calibration may be performed in any of the available engineer-
ing units as well as percent (PCT).
For greatest accuracy, use the sand tbuttons to select engi-
neering units for calibration with highest resolution (highest number
of display counts).
Press and release the Power button when the appropriate engineer-
ing units are displayed. Suggested units are listed below.
Sensor Suggested units for calibration
5 PSI 5.000 PSI
15 PSI 775.7 MMHG or TORR
30 PSI 61.08 INHG
50 PSI 50.00 PSI
60 PSI 60.00 PSI
100 PSI 7.031 KG/CM2
200 PSI 407.2 INHG
300 PSI 610.8 INHG
500 PSI 3447 KPA
1000 PSI 6895 KPA
2000 PSI 4613 FTH2O
3000 PSI 6920 FTH2O
5000 PSI 5000 PSI
The display will then indicate the currently applied pressure in the
engineering units selected for calibration.
sand tButton Operation
Each time one of the sor tbuttons is pressed and released
quickly, a small change is made to the digitized pressure signal. It
may take more than one of these small changes to result in a single
digit change on the display.
To make larger changes, press and hold the appropriate button.
After about one second, the display will begin to change continu-
ously. Release the button to stop. Then make fine adjustments by
pressing and quickly releasing the buttons as previously described.
Gauge Reference Pressure Gauges
Apply zero pressure by venting the gauge port to atmosphere. The
character display will alternate between ZERO and CAL. Adjust
for a display indication of zero using the sand tbuttons.
Apply full-scale pressure. The character display will alternate
between +SPAN and CAL. Adjust for a display indication of
full-scale pressure using the sand tbuttons.
Apply 50% full-scale pressure. The character display will alternate
between +MID and CAL. Adjust for a display indication equal to
50% of full-scale pressure using the sand tbuttons.
Gauge Reference Vacuum Gauges
Apply zero pressure by venting the gauge port to atmosphere. The
character display will alternate between ZERO and CAL. Adjust
for a display indication of zero using the sand tbuttons.
Apply full-scale vacuum. The character display will alternate
between +SPAN and CAL. Adjust for a display indication of
full-scale vacuum using the sand tbuttons.
Apply 50% full-scale vacuum. The character display will alternate
between +MID and CAL. Adjust for a display indication equal to
50% of full-scale vacuum using the sand tbuttons.
Absolute Reference Gauges
Apply full vacuum to the gauge. The character display will alternate
between ZERO and CAL. Press the sand tbuttons to obtain
a display indication of zero.
Apply full-scale pressure. The character display will alternate
between +SPAN and CAL. Press the sand tbuttons to obtain
a display indication equal to full-scale pressure.
Apply 50% of full-scale pressure. The lower display will alternate
between +MID and CAL. Press the sand tbuttons to obtain
an indication equal to 50% of full-scale pressure.
Compound and Bipolar Gauges
In addition to the steps described above for pressure gauges, apply
full-scale vacuum. The character display will alternate between
-SPAN and CAL. Adjust for a display indication of actual applied
vacuum using the sand tbuttons.
For bipolar and –30.00inHg/+15.00psig compound range models
only, apply 50% full-scale vacuum. The character display will
alternate between -MID and CAL. Adjust for a display indication
equal to 50% of full-scale vacuum using the sand tbuttons.
Save Calibration
Press and hold the Power button until the display indicates - - - -
then release the button to store the calibration parameters in non-
volatile memory and restart the gauge.
Verify the pressure indications at 0%, 25%, 50%, 75% and 100%
of full scale.
The factory default pass code 3510 may be changed to a different
value for configuration and/or calibration.
Configuration Pass Code
With the unit off, press and hold the sbutton to view and/or
change the user configuration pass code. Then press the Power
button. Release all buttons when the display indicates CFG.
Calibration Pass Code
With the unit off, press and hold the tbutton to view and/or
change the user calibration pass code. Then press the Power but-
ton. Release all buttons when the display indicates CAL.
Change Pass Code Mode
Before the unit enters the view or change pass code mode, the
display initially indicates _ _ _ _ with the first underscore blinking,
and with CFGPC or CALPC on the character segments.
Note: The unit will automatically revert to normal operation if no
buttons are operated for approximately 15 seconds. To cancel and
return to normal operation, press and release the Power button
without entering any pass code characters.
Enter access code 1220:
Use the sand tbuttons to set the left-most digit to 1.
Press and release the Power button to index to the next position.
The 1 will remain, and the second position will be blinking.
Use the sand tbuttons to select 2.
Press and release the Power button to index to the next position. 1
2 will remain, and the third position will be blinking.
Use the sand tbuttons to select 2.
Press and release the Power button to index to the next position. 1
2 2 will remain, and the fourth position will be blinking.
Use the sand tbuttons to select 0.
Press and release the Power button to proceed.
Note: If an incorrect access code was entered, the gauge will return
to the start of the access code entry sequence.
Change Pass Code
Once the access code has been entered correctly, the display will
indicate the existing user-defined pass code with CFGPC or
CALPC on the character segments.
Press the sor tbutton to select the first character of the new
pass code.
When the correct first character is being displayed, press and
release the Power button to proceed to the next pass code character.
Repeat above until the entire pass code is complete.
To exit the User Defined Pass Code change mode, press and hold
the Power button.
Release the button when the display indicates - - - - to restart
the gauge.
Calibration
User-Defined Pass Code Configuration
Calibration—continued
Battery Replacement
A low battery indication will be shown in the upper left-
hand corner of the display when the battery voltage falls
sufficiently. The batteries should be replaced soon after
the indicator comes on or unreliable readings may result.
1. Remove the 6 Phillips screws on the back of the unit.
2. Lift up the battery holder.
3. Remove batteries by lifting up the positive end of the battery
(opposite the spring) taking care not to bend the battery holder
spring.
4. Discard old batteries properly, do not discard into fire, sources
of extreme heat, or in any hazardous manner.
5. Always replace both batteries at the same time with high quality
alkaline batteries.
6. Install batteries with correct orientation. Incorrect polarity will
damage the gauge. The negative (flat) end of each battery
should be inserted first facing the battery holder spring.
7. Replace battery holder and back cover, including the rubber
gasket and reinstall the six screws.
The M8 version allows recording of up to eight pressure readings.
While in the memory mode the peak reading is captured.
The eight MEM 1 through MEM 8 labels are factory set.
F20B Memory—M8 Versions
F20B Memory—M4 Versions
The M4 version allows recording pressure
readings of up to four tires. While in the
memory mode the peak reading is captured.
The number 1 is shown on the upper dis-
play. The lower display will indicate the label
for memory 1.
Use the sand tbuttons to select the
desired label: MEM I, LR (left rear), RR
(right rear), RF (right front), or LF (left front).
Each of the memory locations may be
renamed as desired in any sequence. Care
should be taken to avoid duplication or
omission of a position.
When the desired label for memory 1 is
displayed, press the Power button.
Repeat the steps for the other memory locations. When the desired
label for memory 4 is displayed, press and release the Power button to
save the user configuration and restart the gauge.
I
Mem I
- or -
I
LF
ts
Zero/Clear Memory
ts
Zero/Clear Memory
*
*
*
If a special memory configuration was ordered,
the custom memory labels may be shown.
In some cases, it may be possible to rename
the MEM locations to the custom labels. If this
is the case, use the following example below.
After auto shutoff time selection, the number
1 is on the upper display. The lower display
will indicate the label for memory 1.
Use the sand tbuttons to select MEM 1,
or the programmed memory label.
When the desired label for memory 1 is dis-
played, press and release the Power button.
Repeat the steps for the other memory
locations. When the desired label for the last
memory location is displayed, press and release the Power button
to save the user configuration and restart the gauge.
F20B Memory—Custom Versions
I
Mem I
I
NLG I
ts
Zero/Clear Memory
*
*
- or -
ts
Zero/Clear Memory
*
F22B Backlight Time Selection
The lower display will indicate BL if the
display backlight is enabled or NO BL if
display backlight is disabled.
Use the sbutton to enable backlighting
and the tbutton to disable backlighting.
Press the power button to save the setting.
If NO BL was selected the user setup is
complete and the gauge will restart and be
ready for use with the new configuration.
If BL was selected the current backlight
auto shutoff time is displayed in minutes.
1 minute is the factory default.
Use the sand tbuttons to select the
minutes for backlight shutoff time.
A setting of zero disables the auto shutoff timer and the backlight
will be on whenever the gauge is on. The maximum setting is 255
minutes. The gauge auto shutoff time will override the backlight
time. When the desired time is displayed, press and release the
power button to save your selection and restart the gauge.
ts
Zero/Clear Memory
*
*
BL
- or -
No BL
ts
Zero/Clear Memory
2
BLTMR
* *
- or -
cecomp.com
1220 American Way Libertyville, IL 60048
800-942-0315
CECOMPDiv. of ABSOLUTE PROCESS INSTRUMENTS