Instructions for adjusting a replacement display together with the old platform:
Since each platform outputs slightly different measurements, you have to adjust (calibrate) the new display together with the old platform. The display "learns" how strong the signal is at a certain weight.
In order to correctly adjust the scale, the mostreference weight should be more accurate than the scale!
Manual
Hold down the TARE key without a weight on the scale, and then simultaneously press the UNIT key. The required reference weight C XXX appears on the display (e.g. C100 = 100.00kg) *
Place the weight on the platform, the adjustment process starts automatically. After successful adjustment, the placed weight appears in kg.
Alternatively, or in addition, you can carry out an adjustment with a "half" weight.
Proceed as described above until the required calibration weight appears (e.g. C100 = 100.00kg). Now press the UNIT button again. The scale halves the weight. (e.g. C50 = 50.00kg).
NOTE
We recommend appropriate test weights of accuracy class OIML M2 (For scales in Series PSB) or M1 (PSE scales). These weights have a very low manufacturing tolerance and are more precise than the scales can recognize the weight on them (a 100kg weight, or 10 x 10kg weights of class M1 may differ by a maximum of + -0.005kg). This is the only way to ensure that the scale will then function properly.
You can get test weights for rent from many verification offices or balance technicians, who can also carry out an adjustment or calibration of the complete balance.
In general, the scale can also be adjusted with other things that correspond as closely as possible to the specified reference weight, e.g. at 100kg with 4 * 25kg cement bags. The scale adjusts itself to the weight of the cement bags and will then function to the extent that a weight of 100.00kg is displayed for the 4 bags, but this scale now will probably have a linear error of a few % (The actual weight consists of the amount contained in the bags of 25kg each, +/- a fluctuation in the filling quantity due to packaging, + the weight of the packaging of the bags).
If the scales are only be used for non-critical applications, for example if they are only used to mix the cement in the correct ratio with water to enable good processing, this is not a problem (since the error has a linear effect on the complete measuring range, the ratio of the two substances will also be correct on an incorrectly adjusted balance).
For applications where the actual weight is required, we strongly recommend an adjustment with the appropriate test weights!
If you have no possibility to adjust the scales with the correct weights on site, the first thing to do is send us your old platform. We will adjust the old platform with the new display and send you both together. In this case, simple adjustment of our scales costs nothing.
* List of required reference weights, recommended weight and optional half weight.
PSE 30: 20kg / 10kg
PSE45: 40kg / 20kg
PSE75: 50kg / 20kg
PSE150: 100kg / 50kg
PSE200: 200kg / 100kg
PSE300: 200kg / 100kg
PSB75: 50kg / 20kg
PSB150: 100kg / 50kg
PSB300: 200kg / 100kg
PSB300B: 200kg / 100kg
Repair information, especially for for technicians and DIY:
Everything on the display can be repaired, and all components are individually in stock. If e.g. If only the LCD display is broken, this would be available individually for 5 € and can be changed quite easily with the appropriate electrical skills and with the available equipment (screwdriver, soldering iron + desoldering pump, side cutter). This also has the advantage that the chip on which the adjustment is saved is retained. No new adjustment is required.
If you have no way of repairing the display yourself, we will be happy to do it for you. We estimate our technician costs at 60 € per hour, repairing a broken display takes 15 minutes (including German VAT € 17.85, + € 5 for the spare part, i.e. cheaper than a completely new display).
We also offer further components of our scales directly on contact, prices for most spare parts can be found here Pricelist Spareparts & Repairs
Here are the most common error messages, problems and causes specifically for the PSE & PSB series:
Scale does not start / completely dead
In 95% of cases there is a problem with the power supply, the power supply unit is defective or the batteries are flat.
Please note that the circuit to the batteries is disconnected as soon as a power supply unit is plugged into the socket. If a defective mains adapter is connected, the display will NOT switch on with new batteries. Please try to switch on the scale with batteries only, without a mains adapter connected.If required: The 6V replacement power supply unit is available in the store
If no improvement: If the display electronics are defective, in most cases it is necessary to replace the entire display; repair is not economically viable.
Scale starts, but remains stuck during the self-test (count down in the display) with the following message:
F----2: Damage at the AD converter
In the worst case, the signal output by the load cell cannot be calculated due to a fault in the "evaluation electronics", but usually only an incorrect adjustment is stored. The first attempt should be to reset to the factory settings:
Factory setting: before switching on the scale, press and hold the TARE button, then switch on. When "CCCC" appears on the display, release the TARE button
If this does not improve the situation and there is actually a defect in this component, the entire display must be replaced.
F----3: Keys on the keyboard are fault
One of the keys (Preasure buttons) on the display continuously emits a signal and is defective or jammed. If necessary, check for dirt and clean with contact spray.
If no improvement: repair possible, replacement part = € 0.50 per defective button (+ 15 min. installation if we do it).
F----5: Sensor signal fault or load cell defective
In the worst case, the load cell itself does not output a signal or only an incorrect signal. In many cases, the scale can be reset by resetting to factory settings or a new adjustment.
Factory setting: Before switching on the scale, press and hold the TARE key, then switch on. When "CCCC" appears on the display, release the TARE button. If this does not improve the situation: Readjust the scales according to the instructions.
If there is no improvement: The error can NOT be rectified by a new display, please contact us directly
F----L: Zero point error
The electronics are receiving a value that is below the actual measuring range.
Check whether there is dirt or a foreign object below the weighing surface that pushes it upwards.
Try a reset to factory settings (press and hold the TARE button before start-up) or try to recalibrate the scale.
If no improvement: The error can NOT be rectified by a new display, please contact us directly.
F----H: Weighing capacity exceeded / overload warning.
The weight on the scale exceeds the maximum measuring range of the scale, unload the weighing surface immediately!
If the error is displayed incorrectly (if the error is also displayed when the weighing surface is empty or if a scale that can weigh up to 150 kg, for example, already displays 50 kg: Reset to factory settings (hold down the TARE button during start-up) or try to recalibrate the scale (see C---H).
C----H: Calibration error, weighing capacity exceeded
If no new adjustment is possible after the message F---H in weighing mode or if the error message C---H appears when the test weight is placed on the scale, the load cell is damaged in many cases.
If there is also no improvement: The error can NOT be rectified by a new display, please contact us directly.
----- Scale starts up, performs the self-test but remains stuck at "------" (no "0" appears):
Display does not receive a stable measured value.
In most cases, there is a bad signal transmission between the platform and the display. Check the data cable for visible damage (cable break, kinks) and check the plugs for dirt, moisture or corrosion and clean with contact spray if necessary.
