Products > Test Equipment
Fluke 123 Scopemeter and battery replacement
dimani4:
Hey Michel,
Thank you very much.
Now the question about the NTC thermistor. As I understood the color code (which are identical to the resistor codes) begins from the bottom of the thermistor (from the legs) as shown here:https://www.farnell.com/datasheets/2792960.pdf (see page 2). There are 4 color bands from the bottom to the top: the top colour of the apex determines the tolerance of the resistance. So can you tell me please these colours from the bottom to the top?
Thank you very much.
sorenkir:
Hi again,
I am not sure of the coulours on the photo. The one I have used measures 12kOhms at room temperature (20°C).
In another original BP120 I have, the colours are brown, black, orange, gold and it measures 10kOhms.
Michel.
dimani4:
Michel.
One more thing about the thermal fuse. Can you tell me please what voltage/current is? Maybe it's written in the wires or somewhere in the front panel?
Thank you very much.
maki:
I have a dam question: will Fluke 123 work without battery pack?
I’ve received it without battery pack, tried to power it with its original power supply – it won’t turn on.
Any advice is appreciated.
mahi:
maki: Yes, the Fluke 120 series Scopemeters do work without a battery installed. Start by checking the power supply. According to the specifications the original PM8907 power supply is 15V / 300mA but mine reads about 20.4V without load (center pin negative).
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