Vande Berg Scales Blog

You are here: Home → Archives → Tag → Static Monorail Scales
Oct 10, 2013

Loading Problems with Static Multi-Cell Monorail Scales

We like to promote quality in-motion weighing equipment, but that doesn’t mean that we don’t work with some top notch static weighing systems. Our static monorail scales can address some important needs if utilized properly.

The static single-cell is best used for rail-arounds and smaller sized applications, but the static multi-cell monorail scale finds itself more at home in smokehouses. Smokehouses require a much more heavy duty scale than the single cell because of the amount of product that they load onto the scale.

Smokehouses transport and smoke meats on tiered racks called “trees” that hang from a multiple-wheeled trolley. The sheer quantity of meat they can load onto the smokehouse trees requires a more sturdy approach to static weighing. For this reason, we built a tough stainless steel static monorail scale with two load cells.

Having two load cells allows us to achieve a higher capacity by combining the weight readings through a summing board housed inside the scale’s tubular body.

While the two load cells offer a higher weight capacity, they do introduce some difficulties as well. One thing that you can experience when working with multiple load cells is imbalanced load distribution between them.

monorail scale

Naturally, when the trolley is rolled onto the scale, all of its weight is focused on one end of the scale for a period of time. On an average monorail scale, that could cause a positive load on one load cell and a negative load on the other which makes the signals very difficult to sum. It can also cause shock when the trolley hits the scale which could wear your load cells down and force you to replace them more often.

We build the Static Multi-Cell Monorail Scale with the ability disperse load between the two load cells so that they are both loaded in a positive direction at the same time. It uses a specially designed rail which also slowly shifts the weight onto the scale, which increases the lifespan of the system and ensures accuracy.

If you run a smokehouse, you need quality weights before and after smoking. This allows you to manage your shrinkage and improve your meat’s quality. If you are interested in improving your smokehouse efficiency with a leading monorail scale, get in touch with us.

Static Multi-Cell Monorail Brochure

Download our PDF Brochure

Visit Us On TwitterVisit Us On FacebookVisit Us On Google PlusVisit Us On YoutubeVisit Us On Linkedin
Oct 9, 2013

Problems with Static Monorail Scales for Locker Plants

Monorail scales come in both in-motion and static varieties, and each of them serves a different purpose. For example, a static monorail scale makes a good fit for a smaller locker plant which doesn’t have the same heavy rate of throughput that you would find in a large scale production plant.

monorail scale

SS Static Monorail Scale

The static single cell monorail scale we sell works in this scenario because it is simple and durable. They are NTEP approved to meet industry standards and provide highly accurate readings. Since these locker plants don’t have to meet demands as rapidly, the manual action of the static scale works out just fine. There aren’t any moving parts so you can expect it to last longer from a lack of wear and tear.

It is relatively easy to manufacture compared to other static scales on the market, which actually solves a common problem in locker plants. In many smaller plants, they have been using the same static scale for a long time. Though the principle is the same, scale technology has come a long way since many of these older scales were purchased. It might be worth an upgrade.

Beyond a sheer increase in effectiveness, old scales can run you into troubles with standards for meat production. Many older scales have been “grandfathered” into a legal standing even though standards and approval criteria have changed over time.

The problem with these “grandfather” monorail scales is that they cannot be moved. If plants ever update buildings and need to move scales, then those scales either need to meet up to modern standards or you have to buy a new scale that does. Moving the older scale from one point to another only three feet away disqualifies it legally.

monorail scale2

Our scale works specifically well for plants like this because we have cut down on parts without compromising quality or NTEP approval. This allows us to provide better accuracy than other scales at a reasonable cost. When you take that and the scale’s longevity and generally maintenance-free design into account, this makes a good scale to replace a locker plant’s outdated technology.

Static Monorail Scale Brochure

Download our PDF Brochure

See our Stainless Steel Static Monorail

Oct 3, 2013

Static Multi-Cell Monorail Problem Recognition

Time and strain can become evident when a difference is apparent in trolley movement from one side to the other of a multi cell static monorail.   The scale is basically a tuned instrument from one end of the live weighment rail to the other.  When two load cells are utilized to suspend the live rail, they should be able to be matched or tuned to read the same weight indication repeatedly.

static multi-cell monorail scale_02

Stainless Steel Static Multi-Cell Monorail Scale

This should be verified by using certified test weights to check the scale operation on a frequent and recurrent basis.  If the weight is not correct from one end to the other, adjustment may be possible at the summing card if weighment error appears consistent.  Just as with people, not all parts wear down the same way. This type of problem could be attributed to simple metal fatigue or electrical properties internally.

The good sign, however, is that the apparent problem appears consistent, thus it is possible for it to be corrected by simple adjustment and calibration. When the weight indication is not consistent and is grossly incorrect on one side as opposed to the other side, a load cell or summing board is most likely at fault. Load cells have an internal strain gauge, and as alluded above, the strain over time can sometimes be fatal, and load cell replacement is required.

static multi-cell monorail scale_03

Static Multi-Cell Monorail Scale

Maintenance people sometimes check for this situation by testing load cells for correct resistance values.   Consistent and large error weight indications across a load cell are often a good indication it’s time for a change.  When problems are specific and consistent, they can sometimes be easy to identify and subsequently rectify.

Static Multi-Cell Monorail Brochure

Download our PDF Brochure

Oct 1, 2013

Multi-Cell Static Monorail Scale: Inspect, Test, Torque

Our multi cell static monorail scale is available in capacities up to 4,000 lbs.  The length of the live rail can be as short as 12” and as long as 48.” Even though it is not a motorized in-motion scale, there are still some preventive maintenance steps you should perform for the sake of weighing accuracy as well as safety of plant personnel who work in the vicinity of the scale.

Inspect the live rail clearance.  On a regular basis, you will want to look at both ends of the live rail and search for any debris that might have accumulated in the gaps because the live rail must be able to move freely and without any encumbrances. Another item to look for is any flaring of the live rail. If the live rail and the dead rail are touching, the scale’s weighing accuracy will be compromised.

Check for fastener corrosion.  With the relatively high capacities of these scales, fastener corrosion could lead to a safety issue. By regularly inspecting the fasteners and replacing corroded ones as needed, you will be going a long way toward assuring yourself that valuable and dangerously heavy loads will not suddenly crash to the floor. Use only 140,000 PSI or higher-rated fasteners on rail attachment points.

monorail scale

Calibrate with test weights.  Testing your multi cell static monorail scale with test weights should be a regular occurrence. Since, as its name makes clear, there are two load cells, setting the calibration may require adjusting the summing card, the weight indicator, or both.

Torque and seal.  When it is necessary to change load cells, be sure to follow all the steps in the manual. Insist that only high strength L9 bolts and flat washers are used to attach load cells to the scale frame. Final torque values need to be carefully adhered to. Also, where directed to, be sure to use appropriate thread locking compound.

We can help you get a static monorail scale that fits your needs now and also help you get years of safe, dependable performance.

Static Multi-Cell Monorail Brochure

Download our PDF Brochure

May 3, 2013

What’s a Good Replacement For a Mechanical Static Monorail Scale?

What’s a Good Replacement For a Mechanical Static Monorail Scale?

Moving up into the electronic age, an excellent replacement selection would be the Single Cell Static Monorail Scale which is a legal-for-trade NTEP certified scale.

monorail scales

Static Monorail Scales

The single cell static monorail scale is utilized in all sizes of meat processing facilities, and designed for harsh environments.

The NTEP certified scale has a capacity rating of one thousand pounds, with a division increment of two tenths pound (1,000 lb x 0.2 lb).

This same scale is legally certified for use at a selected capacity of 500 lb x 0.1 lbs.

The simplistic and rugged design of our Single Cell Static Monorail Scale makes it a desirable choice by maintenance and engineering personnel.

Installation requires only 18 inches of rail space in an existing rail system.

Sometimes when replacing mechanical scales, users desire to relocate the scale, and the size of this scale makes it easy.

Both ends of the transition scale are welded into place, and additional side support prevents any warping or movement.

The live weighment is independently supported by the electronic load cell which provides the accurate measurement on stability of the carcass trolley.

A slight indentation, or dipped area in the weighment rail provides for quick stability of the positioned trolley.

stainless steel static monorail scale

Static Monorail Scale

In addition to the features mentioned above, depending on the environmental harshness concerns, our static monorail scale is available with either epoxy painted rail, stainless steel rail, aluminum load cell, or stainless steel load cell as well.

Another plus, is the fact that it will operate with any NTEP certified weight indicator capable of 5000 divisions.

In large operations, it’s common to find more than one of these scales in use. For example, sometimes they’re utilized in a cooler area for shrink management data, and sometimes used to and verify automatic weighment operations, or verify trolley tare weights.

Whether new construction, or replacement of an older mechanical monorail scale, you will find the quality and cost efficiency of our Single Cell Static Monorail scale an excellent choice.

Static Monorail Scale Brochure

Download our PDF Brochure