Measuring Temperature Using Resistance Temperature Detectors (Rtds) - Fluke 525B User Manual

Measuring Temperature Using Resistance Temperature Detectors (RTDs)

You must use a 4-wire connection to achieve the Calibrator accuracy
specifications.
To measure the RTD output from an instrument:
1. Connect the Calibrator to the instrument you want to measure as shown in
Figure 3-3.
2. Press  to select RTD mode.
3. If necessary, press   to put the Calibrator in RTD IN mode.
4. Press  to select the desired RTD type.
You can toggle between ºC and ºF temperature units by pressing
 .
725
MULTIFUNCTION CALIBRATOR
V mA ZERO
LOOP
V mA Hz
MEAS
SOURCE
TC RTD ° C ° F
STORE
100%
SETUP
25%
RECALL
25%
0%
Figure 3-3. Measuring RTD Output from an Instrument
To measure temperatures using an RTD probe:
1. Connect an RTD probe to the Calibrator as shown in Figure 3-4.
2. Press  to select the RTD mode.
3. If necessary, press   to put the Calibrator in RTD IN mode.
VOLTS mA RTD
100mA MAX
HI HI
OUTPUT
100V MAX
TC
LO
LO
INPUT/OUTPUT
20V PK
MAX
4W RTD
HI
20V PK
MAX
INPUT SENSE
LO
20V PK
MAX
Using Input Mode
Using Input Mode
STBY VOLTS TC TYPE
OPR mA RTD UNITS
OUTPUT INPUT ZERO
7 8 9
SHIFT
SETUP CJC C / F
4 5 6
SET RECALL AUTOSET
2 3
1
RNG LOCK LOCAL EXP
/ 0 • ENTER
3
CE
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