Fluke BT521 User Manual

BT521
Users Manual
3-10
To disable measurement thresholds:
1. On the measurement screen, push the Threshold softkey to open the Select
Threshold menu.
The value of No. is already highlighted.
2. Use  to set No. to ---.
3. Push the Confirm softkey.
The T-X icon no longer shows on the display.
How the Thresholds Work
When a threshold set is applied, the Product compares each resistance reading with the
resistance reference in the current threshold set.
• If the reading is greater than reference x (1+Fail threshold), the Product shows FAIL
on the screen, indicating that the tested battery is potentially compromised and
should be further investigated.
• If the reading is greater than Reference x (1 + Warning threshold) but less than
Reference x (1 + Fail threshold), the Product shows WARN on the screen, indicating
that the tested battery requires further attention and increase in test frequency.
• If the reading is less than Reference (1+ Warning threshold), the Product shows
PASS on the screen, indicating that the tested battery is within the defined tolerance
limits.
For example, you have applied a threshold set where Resistance Reference is set to
3.00 mΩ, Warning set to 20 %, and Fail set to 50 %. The Product shows FAIL for
resistance readings greater than 3.00 x (1 + 50 %) = 4.50 mΩ. It shows PASS for
resistance readings less than 3.00 x (1 + 20 %) = 3.60 mΩ. It shows WARN for
resistance readings less than 4.50 mΩ but greater than 3.60 mΩ.
At the same time, the Product compares each stable voltage reading with the lower
voltage from the applied threshold set. If the reading is less than the lower voltage
threshold, the product shows FAIL on the display. If the reading is greater than the
threshold, the product shows PASS on the display.
Note
If the resistance test and the voltage test have different results, the
Product shows the worse result. For example, the resistance
indicates PASS but the voltage indicates FAIL, the Product still
shows FAIL on the display.

Fluke BT521 Specifications

General

Certification	RoHS, IEC 61326
Product color	Black, Yellow
Frequency range	50 - 60 Hz
Maximum measured voltage	600 V
Minimum measured voltage	6 V
International Protection (IP) code	IP40
Operating temperature (T-T)	0 - 40 °C
Display type	LCD
Built-in display	Yes
Battery voltage	7.4 V

Weight and Dimensions

Depth	58 mm
Width	103 mm
Height	220 mm
Weight	850 g