Precision Weighing Balances
Your online source for balances, scales & calibration weights @ discount prices

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VB302A-600 Precision Scale [600g x 0.01g], powered AC adapter (included) or 6AA batteries (not included), 4.5 inch round weigh pan.  Calibration does require an external 500 gram mass which is included.

We're letting the cat out of the bag.  There are many ways to build an inexpensive scale.  From the appearance, every digital scale looks more or less the same.  Metrologically they are not all the same and more like night and day.  Reputable scale manufacturers are finding it increasing difficult to differentiate themselves with commercial low cost scale companies.  If a scale that is good enough to weigh cookies is not good enough to weigh your products, please read on.

An easy way to build a low cost scale is to use a low cost inaccurate sensor.  Manufacturers use software to compensate the common linearity in strain gauge load cell sensors.  Cheap sensors inherently have linearity problems.  For an example, if you calibrate the scale at zero and full scale capacity, these two weighing points are accurate.  Anything in between may be an S shape, C shape, reverse C shape or multiple S shape curves on a linearity chart.

Software is used to correct these weighing points to show you a display weight that you want to see but in reality the scale is still highly inaccurate.  The problem lies with the weighing sensor that software, no matter how cannot correct all these errors.  When you start stacking the scale with more and more weights, the weigh may be correct, but when you take them off one by one, the errors are compounded.  This is hysteresis.  Place the weight and let it sit for 10 minutes, this is creep.  Put the same weigh over and over a few times, this is the repeatability test.  There are also temperature span errors and corner shift errors.  Software cannot compensate all these.

Manufacturers also use different software filtering techniques to reduce the display error like averaging the display fluctuations or locking the displays.

The heart of weighing is the sensor (aka loadcell).  On the VB302A balance, VMC only uses the German HBM load cell, they are highly reputable and widely acceptable worldwide to be one of the top manufactures of load cell sensors.  Good sensors can cost 10 times more than the less known sensors.  The result is that you get an accurate and repeatable weighing reading on your scale/balance.

A good sensor alone does not translate to good scale.  Check out the photos below.  The mounting to the load cells and weight transfers from the scale platform to the sub-platter to the load cells and to the base of the scale is all designed and manufactured with added heavy & rigid steel columns to prevent bending or flexes that might cause errors in weighing.  The 4 adjustable footing screws are stainless steel to provide stiffness to the entire scale.

VB302A operates on AC adapter or 6 AA batteries (battery not included) and features a fine hairline finishing on the stainless steel platter.  Additional features include a green backlight LCD with large display for easy viewing and the audible beep when keypads are pressed.

Common applications are in chemistry labs, medical labs, science labs, hospitals and clinics, universities, jewelry, beads & colored stones, paint and powder mixing, under table weighing for determining density, pharmaceutical weighing and calibration labs.

Virtual Measurements & Controls (VMC) gives you value, quality and satisfaction.  VMC is a young 10 year old company with speed and agility to design, manufacture and bring the best products to you but without the overheads of other scale manufacturers.  The savings are all yours when you select the VB-302A600 Portable Scale.

VMC has ended business operations in the USA and NONE of the VMC models are available. Information on this web page is for reference only for our past customer's that purchased this digital scale and want to review the specification. If you need assistance selecting an alternative model give us a call at 978-521-7095 and a balance expert can assist in alternative models.

VMC VB302A600 Precision Scale

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Brand Model Capacity Readability
VMC VB302A600 Precision Scale 600 g 0.01 g
Modes
Add. Features
  • Carats
  • Pounds
  • Ounces
  • Pennyweight
  • Grams
  • Troy Ounces
Comparable Scales

Scientech SL-600 lab balance - $1297.95

Ohaus AX622 Digital Scale - $1225.70

Ohaus precision balance EP612 - $1599.30

Sartorius Practum 612-1S precise weighing - $794.20

Sartorius Quintix 612-1S school scale - $1394.00

A&D Weighing EK610-J NTEP Class II Scale - $620.00

Ohaus SJX622N/E Class III Scale - $357.00

Ohaus 80252042 dot matrix printer - $590.00

My Weigh iM01 electronic scale - $199.99

Ohaus Scout SPX422 Portable Scale - $428.40

A&D Weighing EJ410 Digital Scale - $291.89

Sartorius ENTRIS 822-1S Digital Scale - $684.50

Sartorius GE812 Gold Scale - $640.00

Adam Equipment HCB602H USB scale - $329.00

Sartorius ED822-CW Auto Calibration - $1396.00

Sartorius GE412 Gold Nugget Scale - $540.00

Other Brands 500g Cal Weight Mass - $20.00

My Weigh i601 My Weigh Scale - $181.50

VMC VB-302A300 Portable Scale - $399.00

A&D Weighing EJ610 gram scale - $362.34
MSRP: $399.00
YOU PAY $399.00
Untitled Document
VirtualMC VB-302A-600 Precision Balance
Model VB-302-600
MSRP $264.00
PWB Discount Price  $220.00
S&H via UPS Ground $15.00
Capacity x Readability (grams) 600 g x 0.01 g
Linearity ± 0.02 gram
Repeatability ± 0.02 gram
Stabilization Time < 1 second
Zero (Tare) Range 50% of weighing capacity
Weighing Mode g, lb, oz, dwt, ct, ozt
Display Large (0.59") 15mm Bright Green or Blue backlit LCD
Pan Size (inches) 4.5" round
Dimensions (inches) 6.5" x 2.75" x 9.5"
Lock-Down Capability Yes
Auto Off Yes
Power 9 VDC AC adapter (included)
6 dry cell AA battery (NOT included)
Low Battery Indicator Yes
Auto Shutdown/Power Saving Yes
Windscreen Yes
Weigh Below Not Available
External Calibration (Included) 500g
Operating Temperature 32 - 104°F / 0 - 40°C
Shipping Weight 4.5 pounds
Net Weight 3 pounds
Warranty 1 Year Limited Manufacturers Warranty
Return to base California
Instruction Manual Download the instruction manual for tons of information on how to operate scale.
Additional Features  
  • Counting
  • Status Enunciator
  • Low Battery Indication
  • Fast settling time
  • German HBM sensor
  • Switchable Auto Backlight
  • Auto Zero Tracking
  • Metal threaded footing
  • 1 button external calibration (works with both g or oz/lb)
  • Stability Indication
  • electronic scale

    Copyright © 2011 Precision Weighing Balances, All Rights Reserved.  This site is owned and operated by Precision Weighing Balances who is an Authorized Virtual Measurements & Controls Dealer.  For warranty, parts and technical related issues please call VMC directly at 707-573-3111.

     

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