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S E C T I O N
I
G E N E R A L
I N F O R M A T I O N
1 . 1 INTRODUCTION
Arsenide
(9210-6
or 9220-6) diodes,
platinum or rhodium-iron resistors
The information contained in this
(9220
series), germanium or carbon
operations manual pertains to the
glass resistors (9317C, 9318C), or
installation,
operation, remote
capacitance sensors (9215).
programming, options and
acces-
sories for the Lake Shore Cryotro-
With or without the 8229 Scanner
nics, Inc. Model DRC-93C Tempera-
Card, the DRC-93C can be set to
ture Controller.
This manual also
scan automatically with
an in-
contains
troubleshooting
and
dividual dwell time of
1
to
99
calibration procedures, schematics,
seconds per channel or stepped to
component layouts and replaceable
any available input and held there.
parts lists.
Setting the dwell time to zero
causes a particular channel to be
This
section
contains
general
skipped.
If all dwell times are
information for the Lake Shore
zero, the instrument stays on the
Cryotronics, Inc. DRC-93C Tempera-
channel selected.
ture Controller.
Included is an
instrument description, specifica-
The DRC-93C gives a direct reading
tions, instrument identification,
in temperature when used with any
option and accessory information.
DT-470 Series Temperature Sensor.
All DT-470 Sensors follow the same
1 . 2
DESCRIPTION
temperature response curve.
Four
bands
of tracking accuracy are
The DRC-93C Temperature Controller
available.
Refer
to
DT-470
is a microprocessor based instru-
technical data for details.
ment which provides true analog
control. It is capable of scanning
Diode sensor voltages are digitized
multiple sensor inputs and display-
to a resolution of
100
microvolts
ing temperature with up to
5
digits
with full scale dependent on input
of resolution in K, OC or
OF
or
card configuration.
The tempera-
sensor
units
(volts,
ohms
or
ture
display
has
a
resolution
nanofarads) to five digits.
capability of
0.01
kelvin above
100
kelvin and
0.001
kelvin below
100
The DRC-93C can be used with either
kelvin.
1
or
2
input cards. When two input
cards are used, these cards can be
For greater precision individual
different to allow two separate
sensor calibrations can be accommo-
types of sensors to be used with
dated
with
the
8001
Precision
the controller.
Calibration Option which programs
the
instrument with
calibration
The dual sensor input with the
data for a specific Sensor.
The
optional
8229
Scanner Conversion
algorithm
within
the
instrument
Card expand the input capability of
interpolates between data points to
the DRC-93C to up to
6
input
an
interpolation
accuracy which
sensors.
Depending on the input
exceeds
0.01K
over
the
entire
option
selected,
the
DRC-93C
temperature range of the Precision
handles silicon
(9210-3
or
9220-3)
option.
The
1 6
bit analog-to-
or the patented Gallium-Aluminum-
digital converter is accurate to
COPYRIGHT
3/88
LSCI
1-1
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