Meter that goes both ways - Page 2 - Ram Promaster Forum
User Tag List

Thread Tools
post #11 of 13 Old 06-17-2019, 10:34 AM
Senior Member
Join Date: Aug 2014
Location: Connecticut PM159HI
Posts: 2,365
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 526 Post(s)
Thanks: 49
Thanked 700 Times in 536 Posts

How about two of these, one on the wire from the solar to the batteries and on from the batteries to the loads.

Read the first review for some ideas.

Also, it seems to me that with a DC hall effect sensor, it can detect the direction of current flow and indicate positive or negative flow if connected to a meter that will display that. if looped around the ground wire, then a hall effect sensor would measure in/out flow, no? if there's current flowing in both directions, I would think you would read the "net difference" on a meter... ie. 20 A from the solar, 5A draw for loads, the meter should indicate 15A of flow (difference)


Working on the van, and my website about it! Please visit or here on the forum
proeddie is offline  
The Following User Says Thank You to proeddie For This Useful Post:
RDinNHandAZ (06-17-2019)
Sponsored Links
post #12 of 13 Old 06-17-2019, 11:55 AM
Senior Member
nebulight's Avatar
Join Date: Feb 2016
Posts: 503
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 130 Post(s)
Thanks: 43
Thanked 154 Times in 121 Posts
I may have misunderstood your question by what you meant by "both ways". This question gets asked a lot on facebook groups about the ability to see consumption vs production. In a DC system with storage, if you wanted to be able to view production totals and consumption totals, then you would need two shunts or hall sensors: one on the charge side and one on the discharge side. If you are just looking for NET and don't care about seeing those numbers independently (ie I have 10 amps coming in from solar but am drawing 5 amps, then I have +5 going to the battery is all you'd see), than the one similar to what you linked will work for total net. I wouldn't suggest that specific model as that's a low current version and has a small 20amp shunt built into the unit. You'd need one with an external shunt or hall sensor for your high loads with the inverter. DROK makes a version with a 200amp shunt and it's actually wireless to the display. This is super helpful when installing in an already built out van should you have not access to run the wire. However I think they changed the design as it's not a box anymore:

They have a hall version still, it's not wireless, but it should work the same (note it installs on the positive wire) but I've heard calibration out of the box is an issue and can be a pain in the butt to calibrate properly as you'd need exact current to calibrate (a power supply is generally needed):

I'd see if you can find this version with a shunt. I can't find it on amazon and I think they are going to a new design.

Current caretaker of the Backroader 159" wb
nebulight is offline  
The Following User Says Thank You to nebulight For This Useful Post:
RDinNHandAZ (06-17-2019)
post #13 of 13 Old 06-17-2019, 01:38 PM Thread Starter
Senior Member
RDinNHandAZ's Avatar
Join Date: Jul 2014
Location: Summer in Lakes Region of NH and Winter in the Sonoran Desert of AZ
Posts: 6,687
Mentioned: 15 Post(s)
Tagged: 1 Thread(s)
Quoted: 1513 Post(s)
Thanks: 1,408
Thanked 1,691 Times in 1,312 Posts
(Thread Starter)
Thanks all I am beginning to see that it is out there... now to decide.

2015 136" HT Diesel 1500 Sandstone Pearl Metallic
Campervan build see:
You can browse my build pictures at
Conversion Costs see:
$500 solar and $700 complete Electrical:
If you must make a mistake, make a new one each time.
RDinNHandAZ is offline  

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Forum Jump

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

For the best viewing experience please update your browser to Google Chrome