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Section I
M o d e l
DRC-93C
rhodium-iron,
100mv/ohm;
and for
Option
provides
four additional
capacitance units,
100mV/nF
and
channels of sensor input to the
"A"
10mV/nF.
Since the 9317C and 9318C
input.
The A input is channel A
vary over such a large range of
with the additional inputs desig-
resistance, use of the
8225
with
nated
1-4
with
the
selection
these two input cads is limited to
indicated on the display.
10mV/K.
The Model
8229
Scanner
Table
1 . 1 .
Specifications, Model DRC-93C Temperature Controller
Input characteristics:
Resolution:
Display resolution is
0.001K
below
1 0 0 K , 0 . 0 1 K
above
100K
Inputs:
T w o Sensor Inputs, A and
(0.0001K
below
1 0 K
for
9317C
B.
The
8229
Scanner Conversion
Resistance
Sensor
Input Card).
Option provides for four additional
Resolution can be user-limited to
channels of Sensor Input.
Display
1K, 0.1K
or
0.01K.
Same resolution
sensor can be selected from front
considerations apply for
°C
and °F.
panel or interface, or display can
Changes made by front panel keys or
be
set to scan between sensor
over interface.
inputs. Dwell t h e per channel can
be set independently from
0
(skip)
Temperature
Accuracy:
Dependent on
to
99
seconds.
Input characteris-
Sensor Input Card and Sensor.
See
tics are a function of Sensor Input
Option Installed.
The DRC-93C can
accomodate two input options which
Temperature Range:
Dependent of
allows the
A
input and the B input
Sensor Input Card and Sensor.
to each be assigned their own input
card.
This allows concurrent use
Temperature Control:
of different sensor types, depen-
dent on the user's application.
Set Point:
Keypad selection as a
numeric value, as a step change
Sensors:
Ordered Separately. DRC-
from prior value, or incrementally
93C will
handle
all
types of
via up/down counter.
All keypad
diodes; germanium, carbon glass,
operations can be duplicated with
carbon, etc. negative temperature
optional interfaces.
coefficient resistors; thermistors;
platinum,
rhodium-iron,
etc.
Set Point Resolution:
Selection in
metallic
resistors as well
as
kelvin,
Celsius,
fahrenheit or
capacitance
thermometers
with
Sensor Units.
Temperature to
0.1
proper
choice of
input option
in corresponding units; in Sensor
cards.
See
the
Lake
Shore
Units, 0.1mV in voltage,
0 . 0 1 ohms
Cryotronics, Inc. Sensor catalog
but
limited to five digits in
for details on the above Sensors.
resistance and
0.001
nanofarads out
of
15
nanofarads
(0.01
nanofarads
out of
150
nanofarads for second
Display Readout:
scale) in capacitance. May also be
set over the interface.
Display:
5-digit LED Display of
Sensor reading in Sensor Units
Typical Controllability:
Dependent
(Volts,
Ohms
or Nanofarads) or
on Sensor, its temperature and the
temperature in
K,
°C, or OF shown
resultant
Sensor
"gain",
i.e.,
with annunciators.
sensitivity. Typically better than
1mK
in a properly designed system
below 30K and 5mK above 30K using a
1-4
COPYRIGHT
3/88
LSCI
Input Options available.
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