VAM9020 User Manual
Contents
1. press key to decrease the voltage measure the voltage of the two points mutually influence and can be consistent with the voltages measured by the standard voltmeter through 2 3 times of regulation 2 1 C is calibrate the measure value of current the digital tube display the current a oe value is the current measure value we can choose two points of current value to calibrate the current high current point usually take 3 A low current point usually take 0 1 A the boundary standard point of high and low is 2A above 2A is calibrate the high point current in default less than 2A 1s calibrate the low point current in default at this time we can compare to standard ampere meter press t key to increase the current measure press key to decrease the current measure the current of the two points mutually influence and can be consistent with the currents measured by the standard ampere meter through 2 3 times of regulation 3 2 ES is save parameters after calibrating the voltage or the current need to save parameters adjusting to the 2 ES the nixie tube display is n 1n default indicating that not save the parameters you can press to adjust to display y then press lt OUT gt will save parameters and automatically exit the debug mode 4 3 r is to restore factory settings if the voltage and current value are confused or want to cancel the protection parameters immediately press tort adjust2. VAM 9020 Voltammeter User Manual ad Zhengzhou Minghe Electronic Technology Co Ltd VAM9020 voltammeter is a new type voltammeter which can measure voltage current power charging capacity and time at the same time The voltammeter adopts two upper and lower groups of LED nixie tubes and display measured data During use it can perform flexible switching for displaying different physical quantities Therefore the voltammeter is very suitable for monitoring output voltage and current and also is applicable to occasions such as battery charge and discharge 1 Main feature 1 Dual display for voltage and current and availability for switching display power charge capacity and time 2 Flexible online calibration function you can calibrate the voltage and current value by yourself 3 4 bit LED nixie tube 3 bit measured values and one bit unit 2 Technical indexes 1 Two wire system input voltage range 10V 90V Three wire system input voltage range 0 90V 2 Output current 0 20A 3 Display mode 4 bit LED nixie tube 3 bit measured values and one bit unit 4 Display resolution 0 01V 0 01A 0 01W 0 01AH 0 01H 5 Voltage accuracy 1 2 bytes 6 Current accuracy 2 5 bytes 7 Measuring rate 5 times s 8 Size mm 79 43 25 9 Installing hole mm 76 5 39 2 3 The instrument structure and connection mode In front of instrument there are three operate keys two 4 bit LED nixie tubes and operating tips
3. it is easy and convenient to use On the back of instrument there are four terminals OUT Vext IN the is ae the public terminal of IN and OUT Vext is the positive pole of an external power supply when use three wire system We can choose two wire three wire system to use it Two wire system can connect to the meter circuit directly three wire system needs an external power supply for the meter power supply Two wire system connection diagram and the method VAM9020 Two wire system wiring diagram The positive of the power and load connect to the negative pole of power connect to IN the negative pole of load connect to OUT Three wire system connection diagram and the method DC12V 60V Disconnect the short circuit point Three wire system wiring diagram Open the back cover as shown above use soldering iron to disconnect the short circuit point external power supply use DC12V 60V Vext connect the positive pole of the external power supply the OUT connect the negative pole of the external power supply aie The positive of the power and load connect to the negative pole of power connect to IN the negative pole of load connect to OUT 4 Instructions 1 Correctly connect input output wires 2 Make sure that the input voltage is within the scope of the instrument after power on the above nixie tube display voltage value in default the below nixie tube displa
4. to display y then press lt OUT gt will restore factory setting 5 Announcements 1 Don t over the voltage and current range of the instrument or it will damage the instrument 2 Pay attention to the positive and negative polarity Shipping list 1 VAM9020 voltammeter l 2 User Manual PDF electronic format l
5. y current in default 3 Press the button to select the above nixie tube display press the button to select the below nixie tube display it is easily to switch display the voltage V current A power P capacitance C and time H 4 You can enter the debug mode in the following conditions 1 When the measure result has a certain errors need to be calibrated 2 When the parameters is confused need to restore factory settings The method of enter the debug mode In the normal state long press the lt OUT gt key when the the upper row of digital tube display 0 U it means that it has enter the debug mode short press lt OUT gt key again the upper row of Nixie tubes circularly change among 0 U 1 C 2 ES and 3 r indicating that enter the different setting functions The method of quit the debug mode In the debug mode long press lt OUT gt button 5 The functions of debug mode 1 0 U is calibrate the measure value of voltage the digital tube display the voltage value is the current measure value we can choose two points of voltage to calibrate the voltage high voltage point generally take 32V low voltage point generally takel2 V the boundary standard point of high and low is 20V above 20V is calibrate the high point voltage in default less than 20V is calibrate the low point voltage in default at this time we can compare to standard voltmeter press t key to increase the voltage measure
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