15B & 17B 
Users Manual 
14 
Accuracy Specifications 
Accuracy is specified for 1 year after calibration, at operating temperatures of 18 °C to 28 °C, relative humidity at 0 % to 
75 %. Accuracy specifications take the form of: ±([% of Reading] + [Number of Least Significant Digits]) 
Function Range Resolution 
Accuracy 
Model 15B  Model 17B 
AC Volts (40 to 500 Hz) 
 
400.0 mV
 [1]
  0.1 mV  3.0 % + 3  3.0 % + 3 
4.000 V 
40.00 V 
400.0 V 
1000 V 
0.001 V 
0.01 V 
0.1 V 
1 V 
1.0 % + 3  1.0 % + 3 
DC Millivolts 
 
400.0 mV  0.1 mV  1.0 % + 10  1.0 % + 10 
DC Volts 
 
4.000 V 
40.00 V 
400.0 V 
1000 V 
0.001 V 
0.01 V 
0.1 V 
1 V 
0.5 % + 3  0.5 % + 3 
Diode Test
 [2]
 
G 
1.000 V  0.001 V  10 % 
Temperature
 [3]
 
°C 
(K-type thermocouple) 
50 °C to 400 °C 
0 °C to 50 °C 
-55 °C to 0 °C 
0.1 °C NA 
2 % + 1 °C 
± 2 °C 
9 % + 2 °C 
[1]  Manual Range only. 
[2]  Diode test open circuit test voltage is 1.1 V to 1.6 V and short circuit current is < 0.6 mA (typical). 
[3]  Temperature specifications do not include thermocouple errors. After inserting the thermocouple plug into the meter, allow several minutes for 
thermal stabilization. The thermocouple supplied with this unit covers a temperature range of -40 °C to +260 °C. For probes that provide coverage 
outside this range, see the Fluke Accessories Brochure.