Function
Range
Description
SCAN
dLAY
0
to
250
Sets the time for which each channel display is held when
SEt dISP
is set to
SCAN
. If set to
0
the scanning operation will be disabled i.e. the display will
not automatically scan and must be manually scanned using the
^
or
v
button.
ch 1
CAL,
ch2
CAL
etc.
n/a
Temperature calibration for each input channel.
The procedure for calibrating each channel is:
a. Ensure that an RTD input at a temperature of a known value is present at
the input terminal of the channel being calibrated.
b. At the calibration function for the channel being calibrated e.g.
ch1
CAL.
Press
^
and
v
simultaneously then release them. The display will indicate
the live input value. Do not be concerned at this stage if the live input display
value is not what is required. It is important that the live input value seen is a
steady value. If the display value does not become stable within 20 seconds
then the input needs to be investigated before proceeding with the scaling.
c. Press then release the
F
button. The display will indicate
Ch1
SCL
(or
ch2 SCL
etc.) followed by a value. Use the
^
or
v
button to change this to
the known temperature value. Press the
F
button to accept changes or the
P
button to abort the scaling. If the scaling has been accepted there will be a
display message to indicate this when the
F
button has been pressed e.g.
Ch1 CAL End
.
UCAL
Ch1,
UCAL
Ch 2
etc.
n/a
Uncalibration of selected channel - used to set the selected channel back to
the factory calibration values. This function should only be used when
calibration problems exist and it is necessary to clear the calibration memory.
To clear the memory press the
^
and
v
buttons simultaneously at the
functions. The message
CAL CLr
will be seen to indicate that the memory
has cleared.
P.but
NONE
,
Hi
,
Lo
,
HiLo
or
A.cIr
P
button function - applicable only in models with front panel
P
buttons.
The
P
button may be set to operate some of the remote input functions, see
R.INP
below for a description of these functions with the exception of
FUNC
which is described below. The
P
button is located at the front of 5 or 6 digit
LED models. If both the remote input and
P
button function are operated
simultaneously the
P
button will override the remote input. The functions
below are as described in the
R.INP
function below.
Functions available are:
NONE
(no operation),
Hi
(peak memory),
Lo
(valley
memory),
HiLo
(peak/valley memory toggle) or
A.cIr
(latching memory
reset or acknowledge)
.
Note: To prevent accidental operation of the
P
button in the
A.cIr
function it
is necessary to hold the button in for 2 seconds to perform the selected
operation.
Page 16 of 27
PM4RT8MAN-1.4-0
REFERENCE
THERMOM ETER
WATER BATH, CALIBRATOR
OR OTHER HEAT SOURCE
TEMPERATURE
PROBE
Temperature C
o
