At a glance
Full specifications ↓The full table below adds the operating temperature range and DOT and FCC certification details.
What the scale does
Axle, cargo and gross weights on your phone, so you know where you stand before the certified scale tells you.
Bluetooth 5.0 to the phone in your hand. Weights show up in a grain lot or a yard with no signal at all.
Sealed sensors on a replaceable CR1632, rated from −40°F to 185°F. Nothing to charge, nothing to service.
DOT-rated push-to-connect tees go into the existing air line between the height control valve and the air bags. A hose cutter is the only tool most installs need.
Standard Mode waits for the load to settle before it shows a weight. Agriculture Mode shows every reading as it comes, so you can watch the number climb and stop on target while grain is still flowing.
The BIT app keeps the history per truck and trailer, so the record is there when someone asks for it.
How Air Scale works
One Air Scale reads the weight for the whole axle group.
More responsive while loading loose cargo like grain.
Enter a certified scale ticket and it tunes to your rig.
Fitted in about ten minutes an axle
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01
Tee into the air line
Disconnect the line between the height control valve and the air bags, insert the push-to-connect tee, reconnect. One sensor per axle group — drive and trailer.
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02
Assign in the BIT app
Scan the QR code on each sensor’s package to assign it, then pick the axle it went on — drive or trailer. No QR code to hand? Pick the sensor off your carrier’s list instead.
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03
Calibrate twice
Once empty and once loaded, from certified scale tickets. Both are required before the app can show steer, total and cargo weight — see below.
Calibration is what makes it accurate
You weigh twice: once empty and once loaded. Air Scale learns how your rig’s weight moves against airbag pressure from those two points, and until it has both it cannot show steer, total or cargo weight.
Before each weigh
- Fill the fuel tankA half tank between the two weighs is several hundred pounds of error.
- Park on level groundA cross-slope loads one airbag harder than the other.
- Leave the engine runningAir pressure has to be at operating level, not bled down.
- Cycle the suspensionDeflate, then re-inflate to factory ride height so the bags settle where they normally sit.
Then, in the app
- Open Air Scale, tap the green gear and choose Calibrate. Stand outside the truck, between the sensors, while the readings settle — each sensor has to report two near-identical pressures, which can take a few minutes.
- Choose no-load or heavy-load to match the state the truck is actually in right now.
- Type the axle weights off the scale ticket and save. Check for transposed digits — a calibration is only ever as good as the numbers entered into it.
No scale ticket with separate axle weights? Weigh in three pulls — steer only, then steer plus drives, then the whole rig — and subtract to get each axle.
Full calibration walkthrough in the Help Center →Technical specifications
| Accuracy | ±1% with proper calibration (typically within 50-100 lbs) |
|---|---|
| Connectivity | Bluetooth 5.0 Low Energy |
| Battery life | 1 year typical (replaceable CR1632) |
| Operating temperature | -40°F to 185°F (-40°C to 85°C) |
| Pressure range | 0-150 PSI |
| Fitting sizes | 1/4" NPT and 3/8" NPT DOT-rated push-to-connect |
| Certifications | DOT approved fittings, FCC certified |
| Compatibility | iOS 10+, Android 5.0+ |
In the box
- ›3/8" Air Scale T-fitting for drive axle
- ›3/8" Extended Air Scale for trailer axle
- ›Extra 1/4" tee included for drive axle (Peterbilt)
- ›Quick start Guide walks through installation and setup
Built in West Virginia
Designed, assembled and supported in one building. When something goes wrong, the person who answers can walk to the bench it came off.
Works with the rest of the BIT platform
One app and one bill, whatever else you run.
See where trucks have been and track dwell time.
Current weights on the fleet dashboard map.
Drivers save, create and email a weight ticket.
It pays for itself in about three months
Ten trips across a certified scale a month is a conservative figure for most hoppers and flatbeds. At that rate the set is paid off before the season is out, and saves $1,440–1,800 a year after that.
What drivers say
Takes all of the guess work out of loading my grain hopper. I would recommend this truck scale to anyone. I can get within 100 pounds of my target weight every time.
Was delivered in 2 days as promised and product works as described. Was told it would be within 500 pounds and in most cases it's within 50-100 lbs. Very happy with my truck scales.
Frequently asked questions
For a typical tractor-trailer setup, you need 2 sensors - one for the drive axle group and one for the trailer axle group. This gives you steer, drive, trailer, cargo, and gross vehicle weights.
With proper calibration, Air Scale is 99% accurate. Most users report weights within 50-100 lbs of certified scales.
Air Scale works best with dedicated tractor-trailers with one leveling valve on the drive axle and one leveling valve on the trailer axle. It's compatible with all major truck brands.... Does not work with straight axle vehicles like box trucks. Does not work with spring suspension.
No! Air Scale uses Bluetooth to communicate with your phone or tablet. You can see weights anywhere, even in remote areas without cell coverage.
Installation typically takes 10-15 minutes per sensor. Our push-to-connect fittings install without tools - just disconnect the air line, insert the T-fitting, and reconnect.
Please contact our sales team.
No. Most tractors have no air ride on the steer axle, so there is nothing to read there. Air Scale calculates steer weight from how the drive axle pressure changes, using the steer weights you enter during calibration — which is why a standard 18-wheeler set is two sensors, not three.
Air Scale converts airbag pressure into weight, and one weighing only gives it one point on that line. An empty weight and a loaded weight give it the slope. Until both are entered the app cannot report steer axle weight, estimated total weight or cargo weight. Re-calibrate if you slide the fifth wheel, especially if you dumped the tractor bags to move it.
Unusual setup? Ask before you buy.
Tell us what you are pulling and how the suspension is plumbed, and we will tell you straight whether Air Scale fits it. Monday–Friday, 9am–5pm ET.
