Martel Electronics MasterCAL - Manual (Page 71)

Calibrator
Using Source Mode
61
Be sure the drywell is configured for serial
communication at 2400, 4800, or 9600 bits per
second. Other rates are not supported by the
MasterCAL.
Proceed as follows to source a temperature using a
drywell:
1. If necessary, press M for SOURCE mode.
2. Press the t button to display the
temperature mode menu.
3. Select "Drywell" from the list of options, and
press
e .
4. The calibrator will begin searching for a
drywell. If the MasterCAL shows "Attempting
connection" for more than 10 seconds,
double check your cable connections and
drywell configuration.
5. If a dual well is recognized, a menu will pop
up allowing selection of the "hot" or "cold"
side of the dual well. Only one side of the
drywell may be controlled at a time.
Switching sides requires the drywell to be
reconnected, by disconnecting the serial
cable or by leaving drywell source mode and
selecting it again.
6. When the drywell is connected, the primary
display will show the actual temperature of
the drywell, as measured by the drywell
internally. The drywell model number will
appear above the primary reading. The
setpoint for the drywell is displayed in the
secondary display, at the bottom of the
screen. Initially, the setpoint will be set to the
value already stored in the drywell.
7. Enter the temperature you wish to source
and press
e .
The settled indicator will be cleared when the
actual temperature is within one degree of the
setpoint, and the actual temperature is not
changing quickly. Refer to the drywell
documentation for that model's
recommendations for stabilization time.
The upper temperature limit is restricted by the
"High Limit" setting stored in the drywell. If the
MasterCAL will not set the drywell to
temperatures within the drywell spec, refer to the
drywell manual to check the "High Limit" setting.