Cecomp CTP1B User manual
Cecomp®Battery Powered Digital Pressure Gauges, Min/Max & Selectable Units CTP1B
O±0.1% Test Gauge Accuracy in Most Ranges
OUltra-Ruggedized Design
O316L Stainless Steel Wetted Parts
OSelectable Units and Auto Shutoff Times
OWhite LED Display Backlight
OMin/Max Memory
Sensor Ranges and Engineering Units *±0.25% accuracy 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 .001
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
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Made in USA
Ranges and Resolution
See table below for standard ranges and units
Resolution is fixed for each engineering unit
Accuracy
Accuracy includes linearity, hysteresis, repeatability
Pressure and absolute ranges
±0.1% full scale, ±1 least significant digit
Vacuum, compound, bipolar ranges
±0.25% full scale ±1 least significant digit
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
White LED backlight active with button keypress
Batteries, Battery Life, Low Battery Indication
2 AA alkaline included
Approx. 150-1500 hours depending on backlight usage
Low battery symbol on display
Controls and Functions
Front button powers gauge on/off, activates backlighting for
1 minute, zeros gauge reference gauges, and cycles through
min./max. functions.
Passcode protected Internal buttons for calibration, engineering
unit selection, auto shutoff time, min/max setup.
Min/Max Memory
Minimum and/or maximum readings stored in memory, read-
ings cleared or stored at shutoff. User configurable.
Calibration
Zero button for gauge reference ranges
Non-interactive zero, span, and linearity, ±10% of range
Auto Shutoff
User selectable 1 minute to 8 hours or front button on/off
Weight
Gauge: 9 ounces (approximately)
Shipping: 1 pound (approximately)
Housing Materials
Epoxy powder coated aluminum case and bezel, front and
rear rubber gaskets, polycarbonate label, rubber boot
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 psig, 100 psia, 200 psig sensors
Environmental Temperatures
Storage: –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
3.67"W x 3.19"H x 2"D with boot, not including fitting
How to Specify Included Features
CTP1B range units
Red rubber boot
White LED backlight
All metal case
Port reinforcement
Coated circuit boards
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.
Options—add to end of model number. See price list for details.
CD Calibration data; 5 test points and date
NC NIST traceability documentation, 5 points and date
Accessories—order separately
DPG-OK2, DPG-OK3, DPG-OK6
Pelican®brand high visibility orange heavy duty
waterproof cases. Models available for storing 2,
3, or 6 gauges.
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
Ggauge reference pressure
VAC gauge reference vacuum
Aabsolute reference
Range and Units—See table at left
Select a range code for default units
Please specify if vacuum gauge requires a minus sign
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.
Contact us for repairs, service, or refurbishment.
4Gauges must be operated within specified ambient tem-
perature 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 appli-
cation.
4Use fittings appropriate for the pressure range of the gauge.
4Due to the hardness of 316 stainless steel, it is recom-
mended 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 sen-
sor 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.
Bipolar ranges read positive pressure and vacuum in the same
units, and zero with the gauge port open.
1000 psi and higher sensor are a sealed reference type. They
read zero with the gauge port open are internally referenced
to 14.7 psi. Functionally similar to gauge reference sensors.
Absolute reference gauges read zero at full vacuum and atmo-
spheric pressure with the gauge port open. With an open gauge
port the readings will vary continuously due to the effects of
barometric pressure.
Range Codes
The range code is part of the gauge model number and indi-
cates the default range when the gauge is ordered.
Selectable Ranges
Engineering units may be changed to any of those listed in the
same sensor range as shown in the range table.
Conversion
Engineering units are calculated from the factory default unit to
the newly selected units. The ranges listed under the psi sensor
range are rounded off.
Power-Up
Press and hold the front button for approximately 1 second.
The display is tested, the default full-scale range is indicated,
the full-scale range in the selected units are indicated, the
display is tested again, then the actual pressure and units are
displayed.
The backlighting will turn on for 1 minute and then auto-
matically shut off. Display backlighting can be turned on by
momentarily pressing the power button whenever the gauge is
on. This also restarts the auto shutoff timer.
The display backlighting will not be apparent under bright
lighting conditions.
Power-Up With Zero
This applies to gauge reference models only. Absolute refer-
ence gauges do not use the zero feature since they read
atmospheric pressure under normal conditions.
Be sure the gauge port is exposed to normal atmospheric pres-
sure and no pressure is applied. The zeroing function is only
activated at each power-up and the stored zero correction is
erased when the gauge is shut off.
Press and hold the front button. The display is tested and
then oooo is displayed. The gauge is now zeroed. Release
the button and the full-scale range in the selected units are
indicated, the display is tested again, then the actual pressure
and units are displayed.
Attempting to zero the gauge with pressure greater than
approximately 3% of full-scale pressure or vacuum applied
will result in an error condition, and the display will alternately
indicate Err 0 and the actual measured pressure. The gauge
must be powered down to reset the error condition.
Normal Operation
Following the start-up initialization, the display indicates the
pressure reading updated approximately 3 times per second.
The auto shutoff timer starts when the gauge is powered up or
whenever the button is pushed, unless the gauge shutoff time
was set to zero for on/off operation.
If excessive vacuum is applied to a pressure-only gauge, the
display will indicate -Err until the vacuum is released. Applying
vacuum to a gauge designed for pressure may damage the
pressure sensor.
If excessive pressure is applied (112.5% over range), an
out-of-range indication of 1 – – – or 1.–.–.– will be displayed
depending on model.
Minimum and Maximum Readings
Gauges are normally configured with minimum and maximum
capture functions enabled. One or both can be disabled in the
Advanced Configuration mode.
Minimum and maximum readings are continuously stored and
updated whenever the gauge is on. The stored readings can be
manually cleared if desired. The MAX and MIN memory is also
cleared whenever the gauge is off unless configured to save
the readings.
Press and hold the button for about 1 second until MAX is
displayed alternating with the units. The maximum reading will
be continuously updated. The gauge may be left in this mode.
After MAX is displayed, press and hold the button for about 1
second until MIN is displayed alternating with the units. The
minimum reading will be continuously updated. The gauge
may be left in this mode. If excessive vacuum is applied to a
pressure-only gauge while in this mode, the display will indi-
cate -Err until the MAX/MIN readings are cleared.
After MIN is displayed, press and hold the button again for
about 1 second until * * * * is displayed. The MAX and MIN
memory is not erased and the gauge returns to normal opera-
tion with the display indicating the current reading.
Press and continue to hold the button until the display indicates
clr MX/MN (about 3 seconds total) and then release the button.
Both maximum and minimum values are cleared and the gauge
returns to the normal mode and displays the current pressure.
Shut-Down
To shut off the gauge manually at any time, press and hold the
button until the display indicates OFF (about 5 seconds) and
then release.
When an auto shutoff timer is used, the display indicates OFF
five seconds prior to auto shutoff. The button can be pressed to
keep the gauge on. The auto shutoff and backlight (if equipped)
timers are reset whenever the button is pressed and released.
If the gauge is set up without auto shutoff (on/off operation)
it will stay on until manually shut off or until the batteries are
depleted. Turn gauge off when not in use to conserve battery
life.
Instructions CTP1B
Operation—continued
Types of Gauges
Installation Precautions
Dimensions
Operation
Selectable Ranges
Function Button Prompt (Release Button)
On Press for 1
second
Display test > default units > selected
units FUll scale > display test >
actual reading
Zero
(gauge ref.
only)
Press and
hold
Display test >
oooo
> default units >
selected units FUll scale >
display test > actual reading
Hi reading Press/hold Max > max. reading & units
Lo reading Press/hold MIN > min. reading & units
Exit Hi/Lo Press/hold
SSSS
> actual reading
Clear Hi/Lo Press/hold Max > Clr mx/mn > actual reading
Clear, off Press/hold Max > Clr mx/mn > OFF
¼" NPT
2.88"
3.38" housing
3.67" with boot
0.75"
1.65"
Standard
XXXXX
8
8
88
82
Low battery
voltage
indicator
Turn at hex fitting only
2.0"
3.19" With boot
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
Accessing the Internal Buttons
1. Remove the 6 Phillips screws on the back of the unit.
2. Lift up the battery holder.
3. Move the battery holder to the side.
4. Remove the battery cradle if necessary to gain access to
the two internal buttons located near the lower right and
left corners of the circuit board.
Auto Shutoff Time Selection
Auto shutoff time selection is done via the internal buttons to
help prevent accidental or unauthorized changes. The selected
shut off time is stored in non-volatile memory and will be
retained even with the battery off or batteries removed.
Remove the rear cover to gain access to the two internal
buttons located near the lower right and left corners of the
circuit board.
With the gauge powered up, press and hold the DOWN button.
Release the button when the auto shutoff time is displayed on
the upper display.
The lower display will indicate AST M if the time displayed is in
minutes, and AST H if it in hours.
An auto shutoff time of 0 signifies that the auto shutoff feature
is disabled and the front button turns the gauge on and off.
Use the UP and DOWN buttons to select 0, 1, 2, 5, 10, 15, 20
or 30 minutes, or 1, 2, 4, or 8 hours.
When the desired time is displayed, press and release the front
button to save the selection and return to normal operation.
Note: The gauge will automatically revert to normal operation if
no buttons are operated for approximately 15 seconds.
Replace the battery holder assembly and rear cover taking care
not to pinch the power wires between the cover and the case.
Engineering Unit Selection
Engineering unit selection (except compound ranges) is done
via internal buttons to help prevent accidental or unauthorized
changes. The selected engineering unit is stored in non-volatile
memory and will be retained even with the gauge off or bat-
teries removed. The available engineering units depend on the
sensor range and display resolution.
Compound (inHg/PSIG) gauges must be changed to dis-
play single-unit vacuum/pressure readings in the Advanced
Configuration mode before different engineering units can be
selected.
The default engineering units are mathematically converted to
the newly selected engineering unit. When the gauge is pow-
ered up, the originally configured range is displayed and then
the conversion with the selected engineering unit is displayed.
Powered the gauge up by holding the front button for 1 second.
Press and hold the internal UP button.
Release the button when the engineering units begin to flash.
Use the UP and DOWN buttons to scroll through the list of engi-
neering units available for the pressure range of the sensor.
When the desired units are displayed, press and release the
front button to save the selection and return to normal opera-
tion.
Note: The gauge will automatically revert to normal operation if
no buttons are operated for approximately 15 seconds.
Replace the battery holder assembly and rear cover taking care
not to pinch the power wires between the cover and the case.
Advanced configuration requires a passcode for access and
allows more features to be configured.
Remove the rear cover to gain access to the buttons located
near the lower right and left corners of the circuit board.
With the gauge off, press and hold the UP button. Then press
the front button. Release all buttons when the display indicates
CFG and the program version then the full-scale range is indi-
cated and the display is tested.
The display then indicates _ _ _ _ with the first underscore
blinking, and with CFGPC (configuration passcode) on the
character segments.
Note: The gauge 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
front button without entering any passcode characters.
Passcode Entry
The factory default is 3510, but this may be changed by the
user under the Passcode Configuration section.
1. Use the UP or DOWN buttons to set the left-most digit to 3.
2. Press and release the front button to move to the next position.
The 3 will remain, and the second position will be blinking.
3. Use the UP or DOWN buttons to select 5.
4. Press and release the front button to index to the next posi-
tion. 35 will remain, and the third position will be blinking.
5. Use the UP or DOWN buttons to select 1.
6. Press and release the front button to index to the next posi-
tion. 351 will remain, and the fourth position will be blinking.
7. Use the UP or DOWN buttons to select 0.
8. Press and release the front button to proceed with configu-
ration procedures.
If an incorrect passcode is entered, the gauge will return to the
start of the passcode entry sequence.
Factory/User Configuration
The upper display section will be blank, and the lower section
will display either USER_ or FCTRY.
If USER_ is selected, the user configuration can be modified as
described in the following steps.
To select USER_, press and release the DOWN button.
The lower display will indicate USER_.
Press and release the front button to continue.
If FCTRY is selected, the existing user configuration will be
replaced by the original factory configuration.
To select FCTRY, press and release the UP button.
The lower display will indicate FCTRY.
Press and release the front button to restore the factory con-
figuration and restart the gauge.
Max/Min Configuration
Use the UP and DOWN buttons to select from the following:
MX/MN Both highest and lowest values will be captured
MX/--- Only highest value will be captured
--/MN Only lowest value will be captured
--/-- Capture feature is disabled
Press and release the front button to move to the next parameter.
Max/Min Memory
The upper display section will indicate clr.
Use the UP and DOWN buttons to select from the following:
AUTO Automatically clear max. and min. values when the
gauge is powered off
MAN Manually clear max. and min. values
Press and release the front button to move to the next param-
eter.
Gauge Type Configuration
This will only appear with 15, 100, or 200 psig ranges that
were originally ordered as compound gauges.
Use the UP and DOWN buttons to select from the following:
-/+EU Vacuum is indicated as negative pressure in the
selected engineering units
CMPND Vacuum is negative INHG, pressure is PSIG. This setting
will disable engineering unit selection.
Press and release the front button to save the user configura-
tion and restart the gauge.
Replace the battery holder assembly and rear cover taking care
not to pinch the power wires between the cover and the case.
A low battery indication will be shown in the upper left-hand
corner of the display when the battery voltage falls suf-
ficiently. 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 bat-
tery 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.
Instructions CTP1B
Advanced ConfigurationBasic Configuration
Battery Replacement
Advanced Configuration-continued
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 intervals depend on your quality control pro-
gram requirements, although many customers calibrate annually.
Calibration should only be performed by qualified individuals using
appropriate calibration standards and procedures. The calibration
equipment should be at least four times more accurate than the
gauge being calibrated.
The calibration system must be able to generate and measure pres-
sure/vacuum over the full range of the gauge.
A vacuum pump able to produce a vacuum of 100 microns (0.1
torr or 100 millitorr) or lower is required for vacuum and absolute
gauges.
Warning: application of vacuum to non-vacuum models may result
in irreparable damage to the sensor.
Allow the gauge to acclimate to ambient temperature for 20
minutes.
Remove the rear cover to gain access to the UP and DOWN buttons
located near the lower right and left corners of the circuit board.
Install fresh batteries.
Entering Calibration Mode
With the gauge off, press and hold the DOWN button. Then press
the front 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 passcode) on the lower display.
Note: The gauge 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 front button
without entering any passcode characters.
Enter the User-Modifiable Passcode
The factory default is 3510, but this is user changeable.
1. Use the UP or DOWN buttons to set the left-most digit to 3.
2. Press and release the front button to move to the next position.
The 3 will remain, and the second position will be blinking.
3. Use the UP or DOWN buttons to select 5.
4. Press and release the front button to index to the next position.
35 will remain, and the third position will be blinking.
5. Use the UP or DOWN buttons to select 1.
6. Press and release the front button to index to the next position.
351 will remain, and the fourth position will be blinking.
7. Use the UP or DOWN buttons to select 0.
8. Press and release the front button to proceed with configuration
procedures.
If an incorrect passcode is entered, the gauge will return to the start
of the passcode entry sequence.
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 UP
and DOWN buttons to select engineering units for calibration with
highest resolution (highest number of display counts). Press and
Instructions CTP1B
release the front button when the appropriate engineering units are
displayed. Suggested units are listed below.
Sensor Suggested units for calibration
5 PSI 5.000 PSI
15 PSI 775.7 MMHG (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 500.0 PSI
1000 PSI 70.31 KG/CM2
2000 PSI 4072 INHG
3000 PSI 6108 INHG
5000 PSI 5000 PSI
Any 100.00 PCT (percent)
The display will then indicate the currently applied pressure in the
engineering units selected for calibration.
UP and DOWN Button Operation
Each time one of the calibration 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 calibration
button. After about one second, the display will begin to change
continuously. Release the button to stop. Then make fine adjust-
ments by pressing and quickly releasing the calibration 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 UP and the DOWN buttons.
Apply full-scale pressure. The character display will alternate
between +SPAN and CAL. Adjust for a display indication of full-
scale pressure using the UP and the DOWN 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 UP and the DOWN buttons.
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 UP and the DOWN buttons.
Apply full-scale vacuum. The character display will alternate
between +SPAN and CAL. Adjust for a display indication of full-
scale vacuum using the UP and the DOWN buttons.
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 UP and the DOWN buttons.
Absolute Reference Gauges
Apply full vacuum to the gauge. The character display will alternate
between ZERO and CAL. Press the UP and DOWN buttons to obtain
a display indication of zero.
Apply full-scale pressure. The character display will alternate
between +SPAN and CAL. Press the UP and DOWN buttons 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 UP and DOWN buttons 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 UP and the DOWN buttons.
For bipolar and –30.00inHg/+15.00psig compound range models
only, apply 50% full-scale vacuum. The character display will alter-
nate between –MID and CAL. Adjust for a display indication equal
to 50% of full-scale vacuum using the UP and the DOWN buttons.
Save Calibration
Once the adjustments are complete, press and hold the front but-
ton 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.
Replace the rear cover taking care not to pinch the wires between
the cover and the case.
Remove the rear cover to access the buttons located near the lower
right and left corners of the circuit board.
View Or Change User Configuration Passcode
With the unit off, press and hold the UP button, then press the
front button.
Release all buttons when the display indicates CFG.
View Or Change User Calibration Passcode
With the unit off, press and hold the DOWN button, then press the
front button.
Release all buttons when the display indicates CAL.
Enter Access Code 1220
Before the unit enters the view or change passcode mode, the
display initially indicates _ _ _ _ with the first underscore blinking,
and with CFGPC or CALPC on the character display.
Note: The gauge 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
front button without entering any passcode characters.
1. Use the UP and DOWN buttons to set the left-most digit to 1.
2. Press and release the front button to move to the next position.
The 1 will remain, and the second position will be blinking.
3. Use the UP and DOWN buttons to select 2.
4. Press and release the front button to index to the next position.
12 will remain, and the third position will be blinking.
5. Use the UP and DOWN buttons to select 2.
6. Press and release the front button to move to the next position.
1 2 2 will remain, and the fourth position will be blinking.
7. Use the UP and DOWN buttons to select 0.
8. Press and release the front button to proceed.
Note: If an incorrect access code was entered, the gauge will return
to the start of the access code entry sequence.
Once the access code has been entered correctly, the display will
indicate the existing user-defined passcode with CFGPC or CALPC
on the character segments.
1. Operate the UP or DOWN button to select the first character of
the new passcode.
2. When the correct first character is being displayed, press and
release the front button to proceed to the next passcode char-
acter.
3. Repeat above until the entire passcode is complete.
4. To exit, press and hold the front button. Release the button
when the display indicates – – – – to restart the gauge.
5. Replace the rear cover taking care not to pinch the power wires
between the cover and the case.
User-Defined Passcode ConfigurationCalibration Preparation
Calibration
Calibration—continued
Other Cecomp Measuring Instrument manuals
