Current draw

[richhotrain]

gregc

 

richhotrain

I own three RRampMeters, 

is there a difference in votlage measurements between your RRampmeters?

i wonder how well calibrated RRampmeters are and how well they stay in calibration.  Qualcomm calibrated all lab equipment twice a year. 

No, all three measure 13.5 volts. Early in this thread, I posted a photo, and you can see that the two panel mounted RRampMeters both measure 13.5 volts. The one that I use portably also measures 13.5 volts. 

My DCC system is a 5 amp wireless PowerHousePro system. When I add a second booster a few years back and added a second panel mounted RRampMeter, the voltages were different so I adjusted the two boosters to match voltage outputs.

Rich

[Texas Zephyr]

gregc

i wonder how well calibrated RRampmeters are and how well they stay in calibration.

I have a friend with a layout where he has one panel mounted for each power block (5 or 6 of them).  Through the years they all seem to have stayed consistent. 

He is a real stickler for perfection when it comes to track power stuff.

[gregc]

i'm trying to ask what they measure at the same point on the track (and same loading)

[richhotrain]

gregc

i'm trying to ask what they measure at the same point on the track (and same loading) 

Ahh, I cannot help you there. I have one RRampMeter that is portable, so I can measure voltage under load at any point on the layout with that one. My other two RRampMeters are secured to the display cabinet, so those two RRampMeters are not really moveable.

Rich

[gregc]

ok.  thanks