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9305
Thermocouple
I n p u t
Card
M o d e l .
DRC-91C/93C
Table
9305-1.
Specifications, Model
9305
Thermocouple
I n p u t
Card
Input Voltage Range:
Room Temperature Compensated:
-10
to
+10
Temperature
Range:
Depends on Thermocouple type. Refer to Table
Thermocouples
(Ordered
Separately):
Chromel vs.
Au-0.03
at.% Fe,
millivolts.
Uncompensated:
-15 to +15 millivolts.
9305-2.
Chromel vs. Au-0.07 at.% Fe, Chromel vs. Constantan (E),
Chromel vs. Alumel (K)
,
and Copper vs. Constantan (T)
.
and accessed through normal curve selection.
normalized to zero degrees Celcius and listed in Table
9305-4.
Thermocouple-EMF Tables:
Curve tables are stored
in
the controller
The curves are
Input Resistance :
Terminal
B l o c k and Room
Temperature
Compensation:
Greater than 10 9 ohms
A secondary sensor
Compensation
can
be
enabled or
is installed in the rear panel mounted Terminal Block to measure
the Reference Junction Temperature.
disabled.
Offset Adjustment:
Terminal Block.
Electroni
ic Resolution:
1
microvolt
Electronic
Accuracy:
o v e r a l l - c y :
Controllability:
Display Resolution:
5
digits.
Compensated and uncompensated voltage
One-point hardware adjustment built into the
±3
µV
for
-10
to
+10
millivolts, ±5
µV
up to
the
-15
and +15 millivolt full scales.
Depends on conformity of the thermocouple to it's
standard curve and system configuration.
Typically ±0.2K
in
a properly designed system.
in
millivolts from
0.000
to ±15.000 or temperature in Celcius,
Fahrenheit and Kelvin.
Note:
When displaying millivolts, the unit V is shown.
Temperature
Control Signal:
signal
200
times the thermocouple voltage.
The instrument generates
setpoint voltage based on the voltage
or
temperature entered by the
user.
If compensation is enabled, the setpoint voltage is modified
to reflect the compensation required.
of these two voltages provides the required control error signal.
Card processes
an
analog voltage output
Real-time analog comparison
9305-2
COPYRIGHT
6/88 LSCI
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