Home › Forums › Mooshimeter Support › What I have found out so far with the beta app.
- This topic has 9 replies, 2 voices, and was last updated 7 years, 1 month ago by admin.
- Owen BrinkerhoffGuest
I am very much looking forward to using the mooshimeter for ac power functions. The first problem I have found might just be me, but I don’t see a way to have a buffered graph. The next problem is I am getting an inaccurate millivolt reading from my fluke i400s current clamp. Same thing with a fluke 80i-500s. I did get a good reading from my Fluke i200 clamp that reads in milliamps. I have just ordered a pair of Pamona multistacking leads so I can split the common port for a voltage reading. If that works, all that will be required then is a way to scale 1 ma to 1 amp.
The buffered graph is available through the option menu when you press the menu button on your phone. It’s no longer a floating button on the screen.
Regarding using current clamps: How are you connecting the clamps to the meter?
Also note that since the burden resistance of the current reading is very low, you can treat the “A” input as a second common for connecting a floating current clamp. Just be careful and make sure you only connect a floating instrument this way… if you abuse the “A” input you could create a short or a ground loop.
I look forward to hearing more. Best
On the millivolt output clamps I used the Ω and C. On the Voltage measurement I used A and V. When I tried the meter yesterday the millivolt reading was way off. Just to be sure I plugged in a current tap today and tried again; it worked fine this time. (not what I did yesterday) I will repeat what I did yesterday and see what happens. On the milliamp output clamp I used A and C which leaves me without a port to measure Voltage. If I figure it out I will let you know.~ I decided to check it out again before I submitted the post. I don’t know what happened yesterday but the meter is in the ballpark today.
What I found out is that the shunt on the “A” post has a real effect at 240 VAC. It is polarity sensitive, additive one direction and subtractive the other direction. On the i400s clamp I can select 10mv per amp and make this much less significant. When I get the multistacking leads I will try my clamps again without the shunt in the voltage reading. I am guessing that the I200 that reads in milliamps will be the winner since the meter will be looking at the voltage difference only.
One more note I am also having trouble reconnecting. What works for me with a Galaxy note 5 with marshmallow 6.1 is I close the app, disable blue tooth, and then force stop the app. It always comes back up after that.
These are good notes, thanks Owen. Regarding the reconnect issue: does the meter appear in the scan list and you are unable to reconnect to it, or is the issue that the meter does not appear in the scan list when you bring the app back up?
The same meter appears twice in the scan list and neither one will connect.
Oh – that’s extra different than what I expected. Thanks, I’ll have to think on that one.
I now have my multistacking leads and I still have issues. I took the current clamp and AC measurements out of the picture and just used the meter only with DC measurements. I used the DMMcheck+ standard. What I found was the current was on the money and the Voltage was extremely close when each was measured individually. However when combined the 5.0000 VDC standare read 3.90588 VDC and 1.003 madc standard read 67.01 madc. The math agreed with the readings at .2617 Watts.
I did check with Doug Malone who makes the DMMcheck+ he confirms the the standard can be used with voltage and current simultaneously.
I don’t know if it is my mooshimeter or the firmware but something is not right.
Never mind, Doug Malone didn’t tell me the whole story. The current and voltage standards can be used at the same as long two different instruments are reading them. The two standards are not only isolated they are opposite polarity with respect to each other. So I will move on and use an AC resistive load to check out the power functions with different current clamps. I have a load bank with a very good power meter on it to compare it to. That will have to do for a standard.
Thanks Owen, that makes sense. I didn’t know this about the DMMCheck+ but I own one myself, so I’ve learned something new :)