Dibal G-310 The Dibal G-310 can be used as a basic retail scales for your shop or can be linked to a point of sale system to enable printing of the weight on your customers receipt through your EPOS. It can be also use as a weigh & pay scales in sweet shops or salad bars.
Hi.So it is the operators that do the check daily. The thing is we have the scales calibrated every 6 months and the verification done 2 yearly.
I have spoke to the calibration company and the check on each of the four points is what they do every 6 months anyway.I have not come across test mass checks before, but what I can gather is that the operators are checking that the scale reads the correct weight of the mass. They do not record anything.
However after reading some literature, it look like it is a bit more to just moving the test mass around on the scale?Thanks. Hi.So it is the operators that do the check daily. The thing is we have the scales calibrated every 6 months and the verification done 2 yearly. I have spoke to the calibration company and the check on each of the four points is what they do every 6 months anyway.I have not come across test mass checks before, but what I can gather is that the operators are checking that the scale reads the correct weight of the mass.
They do not record anything. However after reading some literature, it look like it is a bit more to just moving the test mass around on the scale?ThanksHi rellie,It simply means that yr interpretation of the terminology 'Calibration' is different to mine. As long as yr interpretation matches that of yr intended auditor (if any) there should be no problem. Regardless of the test outcome and who does the testing, the actual readings should be recorded. As others have said you need to establish tolerances which the 3rd party scale service provider can assist you with.
Keep in mind, the tolerances are dependent on any legal weighing you may be doing in the process. In the US, the bureau of weights and measures has a guidebook which you can use. I don't know what Australia agency has oversight of weights and measurements, but that would be the first stop to determine tolerances.Auditors are typically satisfied if your calibration checks are within regulatory tolerances. The work instruction for checking the scales is very simple and straight-forward given your description of the process in your facility. Hi,There's an easy way in doing daily verification of scales on the line.
There are scales available that has a special function of 'auto cal' and it works for you. You just have the set of calibrated test weights from a third party which will be used when performing an auto calibration function.
The of the scales will give you the process of verification in house and we keep record of activity for documentation.On an annual basis, we send the unit outside or hire a third party to do the calibration. Good morning everyone,I recently started working for a new company. Every other company i have worked we have had daily calibrations on scales, freezer temperature, thermometers, ph machines etc. Here we usually just have an outside scale company come in every 6 months and calibrate our scales. Should i implement a daily scale calibration as well as a verification on the freezer temperatures and thermometers or will the annual check and wall thermometers be sufficient?Do you mean daily checks / verification the equipment is measuring within acceptable tolerance?In my view daily calibrations are unnecessary unless your 'checks' or 'verification' is outside of the tolerance on a regular basis. Really, the calibration frequency is established by what's in the equipment literature, regulatory body (what they may dictate), and how you use the equipment.I've been in facilities where the scales get 'beat up' on a regular basis and have a contract with 3rd party to do monthly service on all scales, including calibration. Other facilities, I've had the calibration annually because the equipment was never out of tolerance on the daily check and equipment well maintained.Thermometers are the same way.
A lot of it depends on the type of thermometer, e.g. A dial thermometer is much more susceptible to vibration and going out of tolerance versus a mercury / alcohol type of thermometer. In my experience the dial thermometers would be calibration checked far more regularly, such as weekly or monthly and the more stable type of thermometers calibration checked annually.Almost forgot.the pH meter typically calibrated daily or multiple times per day depending on usage and how well it is maintained, as well as, what your calibrations yield (does the slope vary greatly from calibration to calibration?).Edited by Ryan M., 30 May 2019 - 05:00 PM. I suggest reading this over.
At least the parts that apply to your process.Do you mean daily checks / verification the equipment is measuring within acceptable tolerance?In my view daily calibrations are unnecessary unless your 'checks' or 'verification' is outside of the tolerance on a regular basis. Really, the calibration frequency is established by what's in the equipment literature, regulatory body (what they may dictate), and how you use the equipment.I've been in facilities where the scales get 'beat up' on a regular basis and have a contract with 3rd party to do monthly service on all scales, including calibration.
Other facilities, I've had the calibration annually because the equipment was never out of tolerance on the daily check and equipment well maintained.Thermometers are the same way. A lot of it depends on the type of thermometer, e.g. A dial thermometer is much more susceptible to vibration and going out of tolerance versus a mercury / alcohol type of thermometer. In my experience the dial thermometers would be calibration checked far more regularly, such as weekly or monthly and the more stable type of thermometers calibration checked annually.Almost forgot.the pH meter typically calibrated daily or multiple times per day depending on usage and how well it is maintained, as well as, what your calibrations yield (does the slope vary greatly from calibration to calibration?).yes, i meant daily checks, so if for the most part our equipment is well maintained and never have problems with our freezer temperatures then daily checks are unnecessary? Yes, i meant daily checks, so if for the most part our equipment is well maintained and never have problems with our freezer temperatures then daily checks are unnecessary?The true answer.THAT DEPENDS. What level of risk are you willing to have if your temperature go outside of the desired range? Risk in terms of food safety and quality with the materials in the freezer.Almost every place I've worked daily temperature logs are done.
The only place it wasn't done is where we had continuous temperature monitoring with alarm notification. I could pull the data anytime from the system and review it. Those temperature sensors were checked annually for calibration.
Select a WeighMax calibration accessory equal to the maximum weight for your type of WeighMax scale. For instance, if you have an industrial scale, such as one used in a medical laboratory, maximum weight may be about 500 grams. If you are calibrating a pocket scale, you will need a smaller weight, probably from 1 to 50 grams.
Do not overload the scale, because this could damage it. If 'OUTZ,' EE' or 'EEE' displays on the LCD screen, the scale is overloaded. If you do not have a WeighMax calibration accessory, use an object with a known mass. Place the scale on a flat surface in a room at normal room temperature. Turn on the scale.
Wait until the scale reads 0. Press and hold the calibrate key, which is marked 'CAL.'
Wait until 'CAL' is displayed on the LCD screen. The calibration display will then read the zero point, '0.0.' Press the 'CAL' key again and hold it for two to three seconds to wait for the scale to calibrate the zero point and display the full capacity. The LCD screen should read the full capacity for that scale, such as '500 g.' Place a weight on the scale equal to the full capacity of the scale. For instance, if the full capacity is 500 grams, place a 500-gram weight on the scale.
Wait three seconds and press 'CAL.' The LCD should read 'PASS' and the mass of the weight used, such '500 g.'
Calibration is completed.