Keithley 2002, User Manual

Page: 51 / 366

Front Panel Operation
2-34
Temperature measurements
The basic measurement procedure for 4-wire RTD tempera-
ture measurements is contained in the Getting Started manu-
al. The procedure for measuring temperature with 3-wire and
2-wire RTDs is similar. Connection diagrams for these RTDs
are provided by Figures 2-9 and 2-10. Be sure that the tem-
perature function is configured for the correct sensor type.
Use the 4-WIRE-RTD selection for a 3-wire RTD sensor.
If using the Model 2001-TCSCAN to make thermocouple
temperature measurements, refer to its instruction manual
for connection information and the measurement procedure.
If using the Model 7057A or 7402, connect the output of the
thermocouple card to INPUT HI and LO of the Model 2002
and refer to its instruction manual for operating information.
The Models 7057A and 7402 use Channel 1 as the reference
junction, and must be configured on the Model 2002 for volt-
age references and offset.
Temperature configuration
The following information explains the various configura-
tion options for temperature measurements. The configura-
tion menu is summarized in Table 2-23. This menu is
accessed by pressing CONFIG and then TEMP. Paragraph
2.3.5 summarizes the rules for navigating through the menus.
Note that a function does not have to be selected in order to
be configured. When the function is selected, it will assume
the programmed status.
Figure 2-9
3-wire RTD temperature measurements
NEXT
DISPLAY
PREV
POWER
DCV ACV DCI ACI
Ω
2
Ω
4 FREQ TEMP
REL TRIG STORE RECALL
INFO LOCAL CHAN SCAN CONFIG MENU EXIT ENTER
RANGE
AUTO
FILTER MATH
RANGE
2002 MULTIMETER
SENSE
Ω
4 WIRE
HI
INPUT
LO
INPUTS
CAL
500V
PEAK
F R
FRONT/REAR
2A 250V
AMPS
350V
PEAK 1100V
PEAK
Model 2002
Platinum
RTD
Input HI
Input LO
Sense
Ω
4-wire LO
NEXT
DISPLAY
PREV
POWER
DCV ACV DCI ACI
Ω
2
Ω
4 FREQ TEMP
REL TRIG STORE RECALL
INFO LOCAL CHAN SCAN CONFIG MENU EXIT ENTER
RANGE
AUTO
FILTER MATH
RANGE
2002 MULTIMETER
SENSE
Ω
4 WIRE
HI
INPUT
LO
INPUTS
CAL
500V
PEAK
F
R
FRONT/REAR
2A 250V
AMPS
350V
PEAK
1100V
PEAK
Model 2002
Platinum
RTD
Input HI
Input LO
Sense
Ω
4-wire LO
8680
RTD PROBE ADAPTER
RANGE: -220
°
C TO 630
°
C
-360
°
F TO 1100
°
F
MADE
IN
U.S.A.
42V
PEAK
RTD
HI
SENSE
HI LO
SENSE
LO
Input HI
Sense
Ω
4-wire LO
Input LO
1 2 3 4
Short
Short
Short
+000.00
°
C
4W-RTD type : PT385
+000.00
°
C
4W-RTD type : PT385
A. Connections to Banana Jacks
WARNING : To avoid a shock hazard and possible
instrument damage, do not use the Model 8680 RTD
Probe Adapter to measure voltages exceeding 30V
RMS, 42.4V peak.
B. Connections to Terminal Block