Advertisement
9317C/9318C Input cards
Model DRC-91C/93C
Table 9317C/9318C-1. Specifications,
9317C/9318C
Resistance
Input Cards
Input
Range:
9317C:
less than 1 ohm to
10,000
ohms with a resolution of
1
part in
10,000 and
an accuracy of 0.1% of reading for resistances from
1
to
1,000
ohms
and 0.5%
of range for resistances from 1,000 to
10,000
ohms
9318C:
less than
1 o h m
to
100,000
ohms with a resolution of
1
part
in
10,000
and an accuracy of
0.05%
of reading for resistances from
10
to
10,000
ohms and
0.25%
of range for resistances less than
10
ohms and from
10,000
to
100,000
ohms.
Sensor Excitation:
milliampere.
voltage across the sensor at
1
millivolt for the 9317C and
10
milli-
volts for the 9318C.
allow for automatic digital correction for thermal
EMFs
in the sensor
connections and leads.
Temperature Range:
Depends on sensor type used.
Sensor resistance
scales from
1
to
10,000
ohms (9317C) or
100,000
ohms (9318C) can be
accommodated.
Sensors
(Ordered
Separately):
Card optimized for CGR Series Carbon
Glass or GR Series Germanium Resistance Thermometers.
temperature coefficient resistors (such as thermistors) can also be
used.
Sensor
Response Curve:
directly. A calibrated sensor and
an
8001
Precision option curve
generated using Lake Shore's proprietary Polynomial Interpolation
Algorithm are required for the unit to display temperature accurately.
Input
Resistance
:
Greater than
10 9
ohms (sensor voltage measurement).
Maximum Sensor
Power
Dissipation:
Voltage applied is
1
millivolt for the
9317C
(power is 1/R in micro-
watts) or
10
millivolts for the
9318C
(power
is
100/R in microwatts).
Display Resolution:
5
digits.
Displays
0.000
to
9999.9
ohms for the
9317C and
0.000
to
99999.
ohms for the 9318C.
accuracy is a function of sensor characteristic and is the product of
the input accuracy (in percent) times R (dT/dR) plus any transfer
inaccuracy introduced by the sensor response curve.
Temperature Control Signal:
signal which is related to the sensor temperature.
generates a similarly related set point voltage based on the set point
resistance or temperature selected.
these two voltages provides the required control signal.
Current range is from
0 . 1
microampere to
1
The current is varied automatically to maintain the
Current polarity is periodically reversed to
Other negative
The DRC-91C/93C display resistance
in
ohms
Depends on sensor .resistance.
Resultant temperature
Card generates an analog voltage output
The instrument
Real-time analog comparison of
93
17C/93 18C-2
COPYRIGHT 12/87 LSCI
Advertisement
