Presys T-1200PH Technical Manual page 18

PRESYS
 Instruments
To verify the step values of a program, select the VARIABLE option and confirm
the values shown in the display with the key ENTER. The 10%, 20% and 25% options
change the number of steps automatically and recalculate the values according to
SETPOINT HIGH and SETPOINT LOW.
SC: This function scales the input reading. The scaling is very useful in
temperature transmitter calibration, for instance, because it displays the current
temperature and the transmitter reading (mA) in the same unit. Thus, the error can be
verified directly in ºC or ºF. Select the option SC and press ENTER. If no input is
selected in IN, the calibrator will show the SELECT INPUT FIRST message. In this
case, go to menu IN and select the input signal type.
The function SC will show IN or NO. Confirm IN to configure the scaling or NO to
disable the SC function, with the key ENTER.
The scaling is performed via the INPUT HIGH and INPUT LOW parameters,
corresponding to the maximum and minimum values of the calibrator signal input, in the
engineering unit of this signal. Next, configure the SCALE DEC (0-4), SCALE HIGH and
SCALE LOW parameters according to the maximum and minimum values of the
transmitter scale and the desired number of decimals. The scaled value is shown on the
display with the # unit.
For example, temperature transmitter with 0 to 100 ºC input and 4 to 20 mA
output. The scaling with one decimal would be:
INPUT HIGH: 20.0000 mA
INPUT LOW: 4.0000 mA
SCALE DEC (0-4): 1
SCALE HIGH: 100.0 #
SCALE LOW: 0.0 #
MEM: The T-1200PH calibrators allow many special programs and functions that
can be of frequent use. In situations like this, it would be useful to store the current
configuration in memory in order to save time. Up to 8 configurations can be stored in
memory.
Selecting the option MEM, it is possible to store the current configuration
(WRITE), restore a previous stored configuration (RECALL) or erase the 8
configurations from memory (CLEAR ALL).
Selecting the option WRITE or RECALL will present a new menu with numbers 1
to 8, representing each one of the memory positions. Choose one of the positions and
press ENTER. The writing operation (WRITE) can be made in an already used memory
position. The calibrator asks for the overwriting confirmation with the message
OVERWRITE MEMORY?. The CLEAR ALL operation shows a confirming message
ARE YOU SURE?. In both cases, press ENTER to confirm the operation or C/CE to
cancel.

WRITE
CLEARALL
RECALL
T-1200PH
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