13-8
IM DR231-01E
13.5 Calibration
Required Equipment
Name
Measurement
Accuracy
Recommended
Range
DC Voltage Generator
0V to 50V
0.005% of 1
µ
V
Yokogawa 9000*, 4808
DMM
0V to 50V
0.005% of 1
µ
V
HP3458A
Decade Resistance Box
0.1
Ω
to 1000
Ω
0.01%
Yokogawa 2793
* For 0V input, it is necessary to either short the input terminals, or to monitor the output voltage using the
DMM.
Calibrating Conditions
Ambient temper
: 23
°
C
±
2
°
C
Ambient humidity
: 55 10%RH
AC power supply voltage : 100 to 240 VDC
DC power supply voltage : 12 to 28 VDC
Power supply frequency : 50/60 Hz
±
1% (for AC power supply model only)
Warm-up time
: at least 30 minutes for this recorder, and necessary warm-up time
for the used equipment
Connection (terminal screw connections)
• DC Voltage Measurement
• Apply a rated voltage in the voltage range that is to be calibrated to channel 3.
+
–
DC Voltage Generator
Input terminal
(CH3)
• Short-circuit between “+” and “–” terminals in channel 2.
+
–
Input terminal
(CH2)
• Temperature Measurement Using RTD
• apply the 100
Ω
resistance to channel 5.
B
b
A
Input terminal
(CH4)
• Short-circuit the resistance input terminals A, B, and b in channel 4.
B
b
A
Decade Resistance Box
Input terminal
(CH5)
Summary of Contents for DR231
Page 12: ...10 IM DR231 01E...
