cecomp.com
1220 American Way Libertyville, IL 60048
800-942-0315
CECOMP
Div. of
A
BSOLUTE
P
ROCESS
I
NSTRUMENTS
Instructions
F16LSC, F16LSCN
Calibration 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.
Gauges can be returned to factory for certified recalibration and
repairs. NIST traceability is available.
Calibration intervals depend on your quality control program
requirements and as-found data. Many customers calibrate their
equipment annually.
The calibration equipment should be at least four times more accu-
rate than the gauge being calibrated.
The calibration system must be able to generate and measure pres-
sure and/or 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.
Use a stable DC power supply and an accurate mA meter to cali-
brate loop powered transmitters.
Allow the gauge to equalize to normal room temperature for at least
20 minutes before calibration.
The gauge must be powered by a 10-32 VDC power supply during
calibration.
Enter Calibration Pass Code
User-Defined Pass Code Configuration
SEL TEST
t
s
0.0
*
*
<and>
then
*
The factory default 3510 pass code may be changed to a differ-
ent value.
Configuration Pass Code
With the unit on, press and hold the
s
and TEST buttons and
then press the SEL button. Release all buttons when the display
indicates
CFG
.
Calibration Pass Code
With the unit on, press and hold the
t
and TEST buttons and
then press the SEL button. Release all buttons when the display
indicates
CAL
.
Test Function Pass Code (if enabled)
With the unit on,, press and hold the TEST button and press the
SEL button. Release both buttons when the upper display indicates
– – – –
.
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
,
CALPC
, or
TSTPC
on the lower display.
The gauge will revert to normal operation if no buttons are operated
for approximately 15 seconds. Press and release the SEL button
without entering any pass code characters to exit.
Enter access code 1220:
Use the
s
and
t
buttons to set the left-most digit to 1.
Press and release the SEL 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 SEL 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 SEL 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 SEL 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
,
CALPC
, or
TSTPC
on the lower display.
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 SEL 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 SEL button until the gauge restarts.
With the gauge powered up, press and hold the
t
and TEST buttons.
Then press the SEL button to enter the Calibration
Mode.
Release all buttons when the display indicates
CAL
. The firmware version is also displayed.
SEL TEST
t
s
CAL
V 04E
The display prompts for entry of the calibration
pass code (
CALPC
), with the first underscore
blinking. To enter the 4 digit pass code, see the
Enter Configuration Pass Code section.
Note that
it is possible to change the default 3510 value.
____
CALPC
Calibration Mode
The gauge enters and remains in the Calibration Mode until
restarted manually or power is removed.
The display will then indicate the currently applied pressure in the
engineering units selected in gauge configuration.
Button Operation
Each time the
s
or
t
button 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
s
or
t
buttons as previously described.
The SEL button is used to select
LCAL
(4 mA calibration),
HCAL
(20 mA calibration), or
CAL
(pressure calibration).
If the SEL button is depressed for longer than 2 seconds, the
display will change to indicate – – – – , and the gauge will exit the
Calibration Mode when the button is released.
Loop Current Calibration
Loop current calibration coordinates the loop current to the display
indication, and is performed independently of applied pressure. It
requires a direct physical measurement of the loop current. See
wiring diagrams on page 2.
4 mA Loop Current
Press and release the SEL button until the display
briefly indicates
LCAL
.
Note: If the SEL button is depressed for lon-
ger than 2 seconds, the gauge will exit the
Calibration Mode.
SEL TEST
t
s
LCAL
V 04E
*
SEL TEST
t
s
0.00
cal
The upper display will indicate the pre-configured
pressure corresponding to a 4 mA loop current.
The lower display segments will alternate
between
CAL
and
4 MA
.
Use the
s
or
t
buttons to adjust the actual loop
current to 4 mA.
4 mA
or
*
*
Power (+)
Power (–)
0.00
mA meter
4.000
20 mA Loop Current
Press and release the SEL button until the display
briefly indicates
HCAL
.
Note: If the SEL button is depressed for lon-
ger than 2 seconds, the gauge will exit the
Calibration Mode.
SEL TEST
t
s
HCAL
V 04E
*
SEL TEST
t
s
The upper display will indicate the pre-configured
pressure corresponding to a 20 mA loop current.
The lower display segments will alternate
between
CAL
and
20 MA
.
Use the
s
or
t
buttons to adjust the actual loop
current to 20 mA.
i00.0
cal
20 mA
or
*
*
Power (+)
Power (–)
i00.0
mA meter
20.00
Pressure Calibration
The pressure calibration procedure simultaneously adjusts both the
display indication and the loop current to correspond to the actual
applied pressure.
Press and release the SEL button until the display
briefly indicates
CAL
.
SEL TEST
t
s
CAL
V 04E
*
SEL TEST
t
s
0.00
cal
Zero Calibration
Apply zero pressure.
The lower display segments will alternate
between
CAL
and
ZERO
.
Use the
s
or
t
buttons to adjust the display
to zero.
zero
or
*
*
Span Calibration
Apply full scale pressure.
The lower display segments will alternate
between
CAL
and
+SPAN
.
Use the
s
or
t
buttons to adjust the display to
match the calibrator's pressure reading.
SEL TEST
t
s
0.00
cal
+span
or
*
*
Mid Point Calibration
Apply 50% of full scale pressure.
The lower display segments will alternate
between
CAL
and
+MID
.
Use the
s
or
t
buttons to adjust the display to
match the calibrator's pressure reading.
SEL TEST
t
s
0.00
cal
+MID
or
*
*
Negative Span Calibration
This applies to bipolar and compound ranges only.
Apply full scale negative pressure (full vacuum).
The lower display segments will alternate
between
CAL
and
-SPAN
.
Use the
s
or
t
buttons to adjust the display to
match the calibrator's pressure reading.
SEL TEST
t
s
0.00
cal
-SPAN
or
*
*
Negative Mid Point Calibration
This applies only to bipolar ranges that use the
±15 psig sensor.
Apply 50% full scale negative pressure (50%
vacuum).
The lower display segments will alternate
between
CAL
and
–MID
.
Use the
s
or
t
buttons to adjust the display to
match the calibrator's pressure reading.
SEL TEST
t
s
0.00
cal
-mid
or
*
*
To store the calibration parameters and exit the
Calibration Mode, press and hold the SEL button
until the display indicates
– – – –
. The gauge
will restart.
Verify the pressure indications at 0%, 25%, 50%,
75% and 100% of full range of the gauge.
SEL TEST
t
s
0.00
cal
-mid
press and hold
until gauge restarts
*
Loop Current Calibration—continued
continued
next column
To store the calibration parameters and exit the
Calibration Mode, press and hold the SEL button
until the display indicates
– – – –
. The gauge
will restart.
Verify output at 0%, 25%, 50%, 75% and 100%
of full range of the gauge.
