Manual -MD150T –27.10.2014 –v.1.3
3.2 Example of parameter change
After correct connection of external elements and switching power supply on, MD150T process
display is ready for operation with previously used settings, and in case of first operation –with
factory settings.
In order to enter programming mode, press . The display shows 1. P1, if the password is
switched off or 0000, if it is active . In such case, in order to enter programming mode (at
active password) enter the password and confirm it with the key ;
•With subsequent pressing of key you switch to next parameters and with pressing of
key you return to previous parameters.
•At the selected parameter you want to change, press ;
With key select display digit position you want to change and change its value with key
. Confirm the entered value with key ;
Value of single digit parameters is selected with keys and ;
•If you want to enter a negative value select the first digit (from the left) then press and hold
key until the symbol “-“ is displayed.
With key you confirm the introduced change and with key you abort the change or
exit the menu.
Prolonged pressing of keys or results in automatic increase/decrease of a given
position/value.
4.Configuration of measurements
4.1 Configuration of force sensor
MD150T for correct displaying value from load cell requires giving of two parameters:
Parameter 10. TRA –bridge range. Rated load of used sensor in N (1 –999999), usually given
on sensor casing,
Parameter 11. TSE –bridge constant –sensitivity of used sensor in mV/V (0.0001 –99),
usually given on sensor casing or in its documentation.
Standard force sensors have constant with range 1 to 2mV/V with given accuracy by manufacturer
(usually 0.05% - 0.5% linearity).
KMMXX sensor series from WObit’s offer are characterized by specified constant for each model,
given with accuracy up to 4 decimals. For example strain gauge bridge KMM20-500N type with given
on causing 6724/06 serial number has 0.9906 constant (value read from bridge documentation).
For example for KMM20-500N sensor with 0,9906 constant MD150T should be configure,
respectively:
To 10. TRA parameter set 500 value
To 11. TSE parameter set 0,9906 value
4.2 Reset of sensor indications
Reset from keyboard: Menu -> 5. TARA -> Confirmation.
