Isotech PEGASUS PLUS 1200 B, Handbook

Page: 36 / 50

PEGASUS
PLUS
1200
HANDBOOK
ISSUE 5 - 01/05
Page 36 of 50
PEGASUS
Plus
1200B, 1200S
MAINTENANCE
Turn the electricity supply off before attempting any cleaning operation.
The only moving part is the fan. It has sealed-for-life bearings. Depending on the environment
in which it is used, p e ri o d ic cleaning of the fan and the inside of the case is recommended.
Cleaning may be accomplished by the use of a small dry paint brush.
The instrument should be periodically checked to ensure it is in good order both mechanically and
electrically.
THE BASIC WORKINGS OF THE PEGASUS
Plus
1200
The purpose of the Pegasus
Plus
1200 models is to provide an adjustable isothermal enclosure for
calibration purposes.
The isothermal enclosure consists of a small furnace into which an insert can be placed. Items
for calibration are placed in suitably drilled holes in the insert. The replaceable inserts enable a
variety of items to be calibrated.
The furnace consists of a specially wound tube assembly. A control se n sor is used by the
temperature controller to sense the furnace temperature. To obtain a n d maintain a required
temperature the controller varies the power to the heaters via a solid state relay.
An internal fan runs continuously and cools the electronics in the instrument.