Vertu Series VPM3000 Process Meters & Temperature Transmitters
Instruction Manual
29
Display Functions and Messages
Display
Parameter
Action/Setting
another meter
done
Done
Copy function completed
Selc
Select
Enter the Select menu
(function, cutoff, out)
Func
Function
Select linear or square
root function
Linr
Linear
Set meter for linear function
Sqrt
Square root
Set meter for square root
extraction
cutF
Cutoff
Set low-flow cutoff
out
Output
Set meter for either relay
or analog output
(factory set only; only
included in certain models)
Aout
Analog output
Set meter for analog
output option
rEly
Relay
Set meter for relay option
Aout
Analog output
Enable or disable analog
output
(factory set only; only
included in certain models)
Yes
Yes
Enable analog output
no
No
Disable analog output
Inty
Intensity
Select display intensity
ICal
Initial calibration
Enter initial calibration for
process inputs
Curr
Current
Calibrating current input
I lo
I low
Calibrate low current
input
I Hi
I high
Calibrate high current
input
volt
Volt
Calibrating voltage input
Vlo
V low
Calibrate low voltage
input
VHi
V high
Calibrate high voltage
input
diag
Diagnostics
Display parameter
settings
led
LED
Test display
CJC
CJC
Display cold junction
compensation voltage
Cfg
CFG
Display meter
configuration
pts
Points
Display calibration points
for process inputs
RELY
Relays
Display relay settings
Aout
Analog output
Display analog output
settings
GoFF
Gain/offset
Display gain and offset
for process inputs
SErL
Serial
Display serial
communication settings
Info
Information
Display software version
and S/N information
Offset Adjustment (
Adj
)
This parameter allows the user to select an offset
adjustment to the temperature being displayed. Offset
adjustment values can be either positive or negative
and can be any number within
±
19.9
°
. The offset
adjustment value is programmed through the
Adjust
menu.
The offset adjustment feature can be useful to
compensate for errors due to thermocouple junctions
or excessive lead wire resistance in RTDs.
The offset adjustment value is automatically reset to
zero whenever the type of temperature sensor is
changed (
i.e.
Thermocouple type or RTD curve).
Celsius/Fahrenheit conversion of the offset
adjustment value is automatic, see note 2 below for
important limitations.
Notes:
1. Offset adjustment is available only when TC or
RTD input is selected.
2. If adjustment value is greater than 11
°
C and the
temperature scale is changed to Fahrenheit, the
maximum applied adjustment will be 19.9
°
F.
Noise Filter (
fltr
)
Most applications do not require changing this
parameter. It is intended to help attain a steady
display with an unsteady (noisy) input signal.
The field selectable noise filter averages any minor or
quick changes in the input signal and displays the
reading with greater stability.
Increasing the filter value will help stabilize the
display, however this will reduce the display response
to changes on the input signal.
The filter level may be set anywhere from 2 to 199.
Setting filter value to zero disables filter function, and
bypass setting becomes irrelevant.
Noise Filter Bypass (
byps
)
The meter can be programmed to filter small input
changes, but allow larger input changes to be
displayed immediately, by setting the bypass value
accordingly.
If the input signal goes beyond the bypass value, it
will be displayed immediately with no averaging done
on it.
The noise filter bypass value may be set anywhere
from 0.2 to 99.9. It corresponds to percentage of full
scale for process inputs and to degrees Fahrenheit for
temperature inputs.
Increasing the bypass value may slow down the
display response to changes on the input signal.
