FLIR DM286 - Page 55

FLIR DM286 USER MANUAL Document Identifier: DM286-en-US_AA
55
14.4.9 - Frequency
Function Range Resolution Accuracy
Input
Protection
(sine wave)
Frequency (Hz)
10.00 Hz to
100.0 kHz
0.01 Hz to
0.1 kHz
± (0.1% + 5d) 1000 V RMS
Additional Frequency Notes
1. No manual range functionality
2. Accuracy range：
• AC mV: 10Hz to 100kHz; > 100kHz unspecified
• ACV, AC LoZ: 10Hz to 10kHz; > 10kHz unspecified
• Clamp adapter setting: 10Hz to 10kHz; > 10kHz unspecified
3. Pulse width > 0.1mS; zero-crossing waveform
4. No independent frequency selection for AC V, AC mV, and AC Lo-Z modes; the default frequency is
displayed above the main measurement; press MODE button to show frequency as the main
measurement.
5. Input voltage range：
• AC mV: 100mV ≤ Input amplitude ≤ 20Vrms
• ACV, AC Lo-Z: 15V ≤ Input amplitude ≤ OL
• Clamp setting: 300mV ≤ Input amplitude ≤ OL
14.4.10 - Temperature (Type-K Thermocouple)
Function Range Resolution Accuracy
Input
Protection
(sine wave)
Temperature (°C)
-40 to 400 °C 1 °C
± (1.0% + 3d)
1000 V RMS
Temperature (°F)
-40 to 752 °F 2 °F
± (1.0% + 5.4d)
Additional Temperature Notes
1. Ensure correct polarity when connecting the thermocouple to the meter.
2. The Lo-Z ACV function mode can heat the meter internally to moderate levels and affect temperature
measurements. Allow 10 minutes after using Lo-Z mode before attempting temperature
measurements.
3. The display will show OL with no thermocouple connected.
4. The specified accuracy does not include the accuracy of the thermocouple probe.
5. Accuracy specification assumes a meter internal temperature of 77°F (25°C). For long measurement
sessions, the meter’s internal temperature can increase > 77°F (25
°C) thereby widening the specified
accuracy for temperature measurements. For best results, switch the meter off and allow it to
normalize to room temperature before taking critical temperature measurements.