Cecomp F20B Instruction Manual
Cecomp F20B is a battery powered digital pressure gauge with memory options and selectable units. It has four measurement modes: gauge reference pressure, gauge reference vacuum, absolute reference and vacuum. It is equipped with 3 buttons: zero/clear, on/off, and memory. F20B has a triple LCD display. The first displays the pressure reading, the second shows the current memory location and the third shows the battery status. The gauge's housing is made of extruded aluminum with epoxy powder coating and ABS/polycarbonate bezel. All wetted parts are made of 316L stainless steel.
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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
Calibration
Zero button for gauge reference ranges
Pass code protected calibration via keypad
Non-interactive zero, span, and linearity, ±10% of range
Weight
Gauge:
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:
Compensated range:
–4 to 185°F (–20 to 85°C)
32 to 158°F (0 to 70°C)
Dimensions
See next page
9 ounces (approximately)
Sensor Ranges and Engineering Units
3 psig
3PSIG
6INHGG
85INH2OG
50ZING
210GCMG
150MMHGG
150TORRG
200MBARG
200CMH2OG
‡
2000MMH2OG
7FTH2O
20KPAG
5 psig ‡
5PSIG
10INHGG
140INH2OG
80ZING
350GCMG
260MMHGG
260TORRG
350MBARG
350CMH2OG
3500MMH2OG
12FTH2O
35KPAG
15 psia
15PSIA
30INHGA
400INH2OA
240ZINA
1000GCMA
760MMHGA
760TORRA
1000MBARA
1000CMH2OA
100KPAA
30INHGVAC
400INH2OVAC
240ZINVAC
1000GCMVAC
760MMHGVAC
760TORRVAC
Res 15 psig vac
.001
.001
.1
100KPAVAC
0.1MPAVAC
1BARVAC
.01
1KGCMVAC
.1
.1
.01
.001
1000MBARG
.01
.1
.1
.1
.1
.1
1
.01
–30INHG/15PSIG .01
4200GCMG
.01
Res ±400INH2OG
.1
.1
1
1
.1
.01
.1
.1
1
.1
.1
1000MBARVAC 1
1000CMH2OVAC 1
.1
.1
1ATMVAC
15 psig
.1
.1
15PSIG
30INHGG
.1
400INH2OG
1 240ZING
.001
1000GCMG
760MMHGG
Res 760TORRG
1000CMH2OG
35FTH2O
100KPAG
0.1MPAG
1BARG
1KGCMG
1ATMG
±15 psig ‡
±15PSIG
±30INHGG
.01
±240ZING
.01
±1000GCMG
.1
±760MMHGG
.1
1
±760TORRG
±1000MBARG
±1000CMH2OG
±100KPAG
±0.1MPAG
±1BARG
±1KGCMG
0.1MPAA
1BARA
1KGCMA
.0001
±1ATMG
.001
30 psia
.001
30PSIA
1ATMA .001
60INHGA
15 psig vac ‡ Res 850INH2OA
15PSIVAC .01
480ZINA
2100GCMA
1600MMHGA
1600TORRA
2000MBARA
2100CMH2OA
200KPAA
0.2MPAA
2BARA
‡
1
1
1
1
1
1
Res
.1
.1
.001
.1
‡ -HA option not available
30 psia
2KGCMA .001
–15V100PSIG
Consult factory for special units
Res –15V100psig ‡ Res
.1
300 psig
300PSIG
.0001
2ATMA
.001
.001
.001
Res
30 psig
30PSIG
60INHGG
850INH2OG
.01
480ZING
.01
2100GCMG
.1
1600MMHGG
.1
1
1600TORRG
2000MBARG
.1
.1
1
1
2100CMH2OG
70FTH2O
200KPAG
0.2MPAG
.01
2BARG
.1
.0001
.001
.001
.001
Res
.01
2KGCMG
2ATMG
60 psig
60PSIG
120INHGG
1660INH2OG
960ZING
.01
3100MMHGG
3100TORRG
4100MBARG
4200CMH2OG
1
1
1
140FTH2O
400KPAG
1
.1
0.4MPAG
4BARG
4KGCMG
.0001
4ATMG
100 psia
.001
100PSIA
.001
200INHGA
Res 2770INH2OA
.01
1600ZINA
.01
7000GCMA
5200MMHGA
5200TORRA
7000MBARA
7000CMH2OA
700KPAA
1 0.7MPAA
1
.1
7BARA
7KGCMA
.0001
7ATMA
.001
1
.01
.1
.0001
200INHGG
.001
2770INH2OG
1
1
1
1
1
1
1
.1
.1
.0001
–30INHG/200PSIG .1
1
1
1
1
1
.1
1
.001
–30INHG/100PSIG .1
Res –30V200INHGG .1
.01
–400V2770INH2OG 1
1
1
1
610INHGG
4800ZING
.01
–240V1600ZING
1
.1
1
–760V5200MMHGG
1
1
700FTH2O
2000KPAG
2MPAG
–760V5200TORRG 1
–100V700KPAG
–0.1V0.7MPAG
1
20BARG
20KGCMG
.001
20ATMG
–1V7BARG
–1V7KGCMG
.01
500 psig
.01
500PSIG
–1V7ATMG
100 psig
100PSIG
.001
1600ZING
.001
7000GCMG
Res 5200MMHGG
.01
5200TORRG
.1
7000MBARG
7000CMH2OG
230FTH2O
700KPAG
0.7MPAG
7BARG
7KGCMG
7ATMG
–15V200PSIG
.01
1
1
1
1
1
1
1
.1
1020INHGG
Res 1150FTH2O
.1
.1
.1
.1
.0001
.001
.001
.001
–15V200 psig ‡ Res 2000PSIG
.001
–30V400INHGG .1
.001
–400V5500INH2OG 1
.001
–240V3200ZING
Res –100V1400KPAG
.1
–0.1V1.4MPAG
–1V14BARG
–1V14KGCMG
–1V 14ATMG
1
.1
.0001
200 psig
200PSIG
400INHGG
5500INH2OG
3200ZING
480FTH2O
1400KPAG
.001
1.4MPAG
.001
14BARG
.001
14KGCMG
14ATMG
3500KPAG
3.5MPAG
35BARG
4070INHGG
4600FTH2O
1
1
1
Res
.1
.1
1
.1
1
.001
.01
35KGCMG
35ATMG
1000 psig Res
1000PSIG
2040INHGG
.01
.01
1
1
2300FTH2O
7000KPAG
7MPAG
70BARG
70KGCMG
70ATMG .01
2000 psig Res
14MPAG
140BARG
.01
.01
Res
.1
1
1
1
.001
.01
1
1
.0001
.01
.01
.01
.1
1
1
.001
140KGCMG
140ATMG
3000 psig
.01
3000PSIG
.01
6100INHGG
.01
6900FTH2O
Res 20MPAG
.1
200BARG
.1
.1
1
1
1
Res
.01
.1
.1
1
1
.1
1
.001
.01
200KGCMG
200ATMG
.1
.1
5000 psig Res
5000PSIG 1
35MPAG
350BARG
.01
350KGCMG
.01
340ATMG
.01
.1
.1
.1
O
±0.25% Test Gauge Accuracy, ±0.1% Optional
O
316L Stainless Steel Wetted Parts
O
Keypad Selectable Units and Auto Shutoff Times
O
Store Readings in Memory
H H H H H H
H H H H H H
Made in USA
F22B
F22BN
How to Specify
F20B range - M4 - options
F20BBL range - M4 - options
F20BN range - M4 - options
F20BNBL range - M4 - options
F20B range - M8 - options
F20BBL range - M8 - options
F20BN range - M8 - options
F20BNBL
F22BBL
F22BNBL
range - M8
range - options
- options
range - options
range - options
range - options
Housing Backlit Memory
Standard
NEMA 4X no
Yes no
Yes
4 max reading
Standard no
Yes 8 max reading
NEMA 4X no
Yes
Standard no
Yes
Min/max
NEMA 4X no
Yes
Range —See table at left. Select a range code for default units.
Please specify if vacuum gauge requires a minus sign.
psi = PSI
inHg = INHG
oz/in 2 = ZIN
inH
ftH
2
2
O = INH2O
O = FTH2O
mmHg = MMHG torr = TORR
mmH
2
O = MMH2O
kg/cm 2 = KGCM
g/cm 2 = GCM kPa = KPA
MPa = MPA
G gauge reference pressure
VAC gauge reference vacuum
mbar = MBAR bar = BAR
cmH
2
O = CMH2O atm = ATM
A absolute reference
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
TP
Moisture resistant circuit board conformal coating
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
TP
Top gauge port. Primarily used with tire pressure applications. Not available with NEMA 4X models.
Accessories —order separately
RB
High visibility orange rubber boot protects gauge for portable applications. Not available with NEMA
4X models.
SCR14SS
Filter screen fitting keeps debris out of gauge sensor. For food vacuum packaging applications.
303SS body, 100 micron 304SS screen.
CON14SS
Quick connector to install or remove gauge without tools. 304 stainless steel, urethane seal.
F20B, F22B
F20BN, F22BN
NEMA 4X
Quick Link: cecomp.com/bat
CECOMP
Div. of
A
BSOLUTE
P
ROCESS
I
NSTRUMENTS
1220 American Way Libertyville, IL 60048
800-942-0315 cecomp.com
© 08-18
Installation Precautions, Ranges and Engineering Units F20B, F22B
Ranges and Selectable Units
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.
Sensor Range and Units
–14.7 to 15.0 psig
–29.9 inHg to
15.0 psig
–29.9 inHg to
100.0 psig
–29.9 inHg to
200.0 psig
0 to 3.000 psig psi
–14.7 to
15.0
–14.7 to
15.0
–14.7 to
100.0
–14.7 to
200.0
3.000
kPa
–101.3 to
103.4
–101.3 to
103.4
–101 to
690
–101 to
1379
20.68
MPa
–.1013 to
.1034
–.1013 to
.1034
–.101 to
.690
–.101 to
1.379
mbar bar atm kg/cm 2 g/cm 2 mmH
2
O cmH
2
O oz/in 2 ftH
2
O inH
2
O
–1013 to
1034
–1013 to
1034
–1.013 to
1.034
–1.013 to
1.034
–1.01 to
6.90
–1.01 to
13.79
–1.000 to
1.021
–1.000 to
1.021
–1.00 to
6.81
–1.00 to
13.61
–1.033 to
1.055
–1.033 to
1.055
–1.03 to
7.03
–1.03 to
14.06
–1033 to
1055
–1033 to
1055
–1033 to
1055
–1033 to
1055
–235.1 to
240.0
–235.1 to
240.0
–235 to
1600
–235 to
3200
–33.90 to
34.61
–33.90 to
34.61
–33.9 to
230.7
–33.9 to
461.4
206.8
.2068 .2041 .2109 210.9
2109 210.9
48.00
6.921 83.0
–407 to
415
–407 to
415
–407 to
2767
–407 to
5534 mmHg
–760 to
7767
–760 to
776
–760 to
5171 torr
–760 to
776
–760 to
776
–760 to
5171
155.1
258.6
inHg
–29.92 to
30.54
–29.92 to
30.54
–29.9 to
203.6
–29.9 to
407.2
6.108
0 to 5.000 psig 5.000
34.47
344.7
.3447 .3402 .3515 351.5
3515 351.5
80.0
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
11.54
138.4
155.1
258.6
10.18
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
0 to 15.00 psig 15.00
103.4
.1034
1034 1.034
1.021
1.055
1055
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
0 to 30.00 psig 30.00
206.8
.2068
2068 2.068
2.041
2.109
2109
1033 vac 235.1 vac 33.90 vac 406.8 vac 760 vac
1055 240.0
34.61
415.1
775.7
760 vac
775.7
29.92 vac
30.54
2109 abs 480.0 abs 69.21 abs 830 abs 1551 abs 1551 abs 61.08 abs
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
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
0 to 100.0 psig
0 to 200.0 psig
0 to 300.0 psig
0 to 500.0 psig
0 to 1000 psig
0 to 3000 psig
100.0
200.0
300.0
500.0
1000
3000
689.5
1379
2068
3447
6895
.6895
1.379
2.068
3.447
6.895
20.68
6895 6.895
6.805
13.79 13.61
20.68 20.41
34.47 34.02
68.95 68.05
206.8
204.1
7.031
14.06
21.09
35.15
70.31
210.9
7031
4218 960 138.4
1660 3103 3103 122.2
7031 abs 1600 abs 230.7 abs 2767 abs 5171 abs 5171 abs 203.6 abs
7031 1600
3200
230.7
461.4
2767
5534
5171 5171 203.6
407.2
4800 692.1
1154
2307
6921
610.8
1018
2036
6108
0 to 5000 psig 5000 34.47
344.7
340.2
351.5
Low battery symbol
4 digit display
Alphanumeric display
Zero display (gauge reference only)
Clear min/max, Up arrow for setup
Power button
Turn on backlight (BL versions)
Display min/max readings
Down arrow for setup
Zero/Clear s
¼" NPT
88888 2
Memory
3.38" Standard
3.5" NEMA 4X t
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 nonvacuum 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.
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
0.75"
2.88"
Standard
1.65"
3.0"
Power-Up and Normal Operation
NEMA 4X
2.0"
Your gauge is ready to use. It was factory calibrated just prior to shipment with batteries installed.
Press and hold the center power button for approximately 1 second. The display is tested.
88888
Zero/Clear
2
Memory s t
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.
200.0
psig full scale
The actual pressure and units are displayed.
The gauge is ready for use and readings are updated approximately 3 times per second
88888 2
For gauge reference models occasional flashing of the minus sign is normal and indicates the gauge is at zero pressure. Absolute gauges only display zero at full vacuum.
Display Backlighting (BL Models Only)
0.0
psig
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 automatically 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.
Error or Out-of-Range Indications
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 indicate Err 0 and the actual pressure. The gauge must be powered down to reset the error condition.
If excessive vacuum is applied to a pressure-only gauge, the display will indicate
-Err until the vacuum is released. Applying vacuum to a pressure-only gauge can damage 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.
Zero the Display
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 pressure or vacuum applied.
0. I
psig
Zero/Clear Memory s t
Press and hold the Zero/Clear button.
hold
Continue to press the Zero/Clear button until oooo is displayed then release the button.
The gauge in now zeroed.
Occasional flashing of the minus sign with zero pressure/vacuum is normal.
The stored zero correction is erased when the gauge is shut off.
Shutoff
E
E o
Zero/Clear s r r
- or -
0.0
psig r r o o
0 o
Memory t
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.
Zero/Clear
To shut the gauge off manually, press and hold (about 5 seconds) the center power button until OFF is displayed.
s
O hold
F F
Memory t
CECOMP
Div. of
A
BSOLUTE
P
ROCESS
I
NSTRUMENTS
1220 American Way Libertyville, IL 60048
800-942-0315 cecomp.com
Instructions
F20B Memory
With the gauge powered up and in the normal operating mode, press and release the Memory button to sequence through the memory locations.
Zero/Clear
PSIG
0 0
Memory s t
When the Memory button is pressed the gauge is in the peak hold mode. A new higher reading will replace an existing reading, 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.
0
MEM I
0
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 pressure readings.
2 0 0
MEM I
0
0.0
psig
Zero/Clear Memory s t
F22B Min/Max Memory
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.
Press and release the Memory button to view the maximum stored value.
200.0
psig
Zero/Clear Memory The center power button may be pressed at any time to return to the normal display mode.
s t
The gauge may be left in the maximum display mode if desired. The maximum reading will be continuously displayed, stored and updated.
205.0
Zero/Clear
MAX
Memory s t
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.
Zero/Clear s
1 hold
Release all buttons when the display indicates CFG . The gauge firmware version is also displayed.
C F
2
G
Memory t firmware version
The gauge then goes through the normal power up sequence.
power up sequence
The display prompts for entry of the configuration pass code ( CFGPC ), with the first underscore blinking.
_ _ _ _
CFGPC
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.
Enter Configuration Pass Code
Enter the pass code. 3510 is the factory default, but it is user-modifiable.
Use the s or t buttons to set the left-most digit to 3.
3 _ _ _
Zero/Clear
CFGPC
Memory s t
- or -
Press and release the Power button to index to the next position.
The 3 will remain, and the second position will be blinking.
3 _ _ _
Zero/Clear
CFGPC
Memory s t
Use the s or t buttons 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 s or t buttons 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 s or t buttons to select 0.
Press and release the Power button to proceed with configuration procedures.
Note: If an incorrect pass code is entered, the gauge will return to the start of the pass code entry sequence.
3
3
3
5
CFGPC
5
5
_
I
CFGPC
I
CFGPC
_
_
0
3 5 I 0
Zero/Clear
CFGPC
Memory s t
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. i92.0
MIN
Zero/Clear Memory s t
The gauge may be left in the minimum display mode if desired. The minimum reading will be continuously displayed, stored and updated.
200.0
psig
Zero/Clear Memory
Press and release the center power button to return to the normal display mode.
s t
Clear a Memory Location
Press and release the Memory button until the value to be cleared is displayed.
2 0 0 0
Press and hold the Zero/Clear button.
Zero/Clear
MIN or or
Memory s t
Release the button when tion will be cleared.
clr is displayed.
The reading for the indicated memory loca-
With a gauge reference models if no pressure is applied, the value will return to zero.
c l
MEM I r
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.
0 0
Zero/Clear
MEM I
Memory
Press and release the Power button to exit the memory mode and return to live pressure readings.
s t
Gauge Configuration—User or Factory
Upon successful pass code entry, the upper display will be blank, and the lower section will display USER . If User is not displayed press and release the t button
Zero/Clear
USER to change the lower display to USER . With
User selected, the gauge configuration can be modified as described in the following sections. s
Memory t
Press and release the Power button to continue with configuration.
F20B: Go to Engineering Unit Selection to continue user configuration.
F22B: Go to the F22B Min/Max Setup section to continue user configuration.
Zero/Clear
USER
Memory s
- or t
If Factory ( FCTRY) is selected, the user configuration will be replaced by the configuration as it left the factory. To select
Factory, press and release the s button.
The lower display will indicate FCTRY .
Zero/Clear s
FCTRY
Press and release the Power button to then restore the factory configuration and restart the gauge.
Memory t
F20B, F22B
F22B Min/Max Setup
After the center power button is pressed when in user configuration mode, the display indicates MX/MN .
Zero/Clear
MX/MN
Memory s t
Use the s or t buttons to select the desired configuration.
MX/MN to capture both maximum and minimum readings.
--/MN to capture minimum readings only.
--/MN
MX/--
Zero/Clear
MX/MN
Memory
MX/- to capture maximum readings only.
s t
- or -
Press and release the power button to save the user configuration and move to the next setup parameter.
Zero/Clear
MX/-s
Memory t
After the center power button is pressed when in user MX/MN configuration mode, the upper display indicates clr .
c l
Zero/Clear man r
Memory s t
Use the s button to select AUTO and the or t button 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. s c
Zero/Clear l
Auto man
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.
s
- or -
Zero/Clear
MAN r
Memory t
Memory t
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 s and t buttons to navigate through the list of engineering units.
Zero/Clear s
Available engineering units depend on the sensor range.
PSIG
- or -
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.
Zero/Clear
INHG s
When the desired units are displayed, press and release the Power button to save your selection and move to the next parameter.
Memory t
Memory t
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.
Zero/Clear
AST M
5
Memory
Use the s and t buttons 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. s s
- or t
I
Zero/Clear
AST H
Memory t
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.
CECOMP
Div. of
A
BSOLUTE
P
ROCESS
I
NSTRUMENTS
1220 American Way Libertyville, IL 60048
800-942-0315 cecomp.com
Instructions F20B, F22B
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 s button to enable backlighting and the t button to disable backlighting.
Zero/Clear
Press the power button to save the setting.
s
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.
Zero/Clear s
Use the s and t buttons to select the minutes for backlight shutoff time.
BL
No BL
Memory
- or -
- or t
2
BLTMR
Memory t
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.
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.
Zero/Clear
Mem I
Memory
The number 1 is shown on the upper display. The lower display will indicate the label for memory 1.
Use the s and t buttons to select the desired label: MEM I , LR (left rear), RR
(right rear), RF (right front), or LF (left front). s
- or t
I
I
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.
Zero/Clear
LF s
Memory t
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.
F20B Memory
—
M8 Versions
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
—
Custom Versions
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.
Zero/Clear
Mem I
I
Memory s
- or t
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 s and t buttons to select MEM 1, or the programmed memory label.
I
When the desired label for memory 1 is displayed, press and release the Power button.
Zero/Clear
NLG I
Memory s t
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.
Battery Replacement
A low battery indication will be shown in the upper lefthand 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.
CECOMP
Div. of
A
BSOLUTE
P
ROCESS
I
NSTRUMENTS
Calibration
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 pressure/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 t button. 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 initially 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 engineering units as well as percent ( PCT ).
For greatest accuracy, use the s and t buttons to select engineering units for calibration with highest resolution (highest number of display counts).
Press and release the Power button when the appropriate engineering units are displayed. Suggested units are listed below.
Sensor
5 PSI
15 PSI
30 PSI
50 PSI
60 PSI
100 PSI
200 PSI
300 PSI
500 PSI
1000 PSI
2000 PSI
3000 PSI
5000 PSI
Suggested units for calibration
5.000 PSI
775.7 MMHG or TORR
61.08 INHG
50.00 PSI
60.00 PSI
7.031 KG/CM2
407.2 INHG
610.8 INHG
3447 KPA
6895 KPA
4613 FTH2O
6920 FTH2O
5000 PSI
The display will then indicate the currently applied pressure in the engineering units selected for calibration.
s and t Button Operation
Each time one of the s or t buttons 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 continuously. 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 for a display indication of zero using the s and t buttons.
. Adjust
Apply full-scale pressure. The character display will alternate between +SPAN and CAL . Adjust for a display indication of full-scale pressure using the s and t buttons.
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 s and t buttons.
Gauge Reference Vacuum Gauges
Apply zero pressure by venting the gauge port to atmosphere. The character display will alternate between ZERO and CAL for a display indication of zero using the s and t buttons.
. Adjust
Apply full-scale vacuum. The character display will alternate between +SPAN and CAL . Adjust for a display indication of full-scale vacuum using the s and t buttons.
1220 American Way Libertyville, IL 60048
800-942-0315
Calibration
—
continued
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 s and t buttons.
Absolute Reference Gauges
Apply full vacuum to the gauge. The character display will alternate between ZERO and CAL a display indication of zero.
. Press the s and t buttons to obtain
Apply full-scale pressure. The character display will alternate between +SPAN and CAL . Press the s and a display indication equal to full-scale pressure.
t buttons to obtain
Apply 50% of full-scale pressure. The lower display will alternate between +MID and CAL . Press the s and t an indication equal to 50% of full-scale pressure.
buttons to obtain
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 s and t buttons.
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 s and t buttons.
Save Calibration
Press and hold the Power button until the display indicates - - - then release the button to store the calibration parameters in nonvolatile memory and restart the gauge.
Verify the pressure indications at 0%, 25%, 50%, 75% and 100% of full scale.
User-Defined Pass Code Configuration
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 s button 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 t button to view and/or change the user calibration pass code. Then press the Power button. 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 s and t buttons 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 s and t buttons 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 s and t buttons 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 s and t buttons 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 s or t button 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 the gauge.
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