DPM-3321
Bi-directional Digital DC Power Meter
with built-in USB data logger & adapter
External shunt model
User Manual
Bi-Directional DC Power Meter with built-in USB data logger & adapter.
The new DPM-3321 is an upgrade version of previous DPM series. It measures current in both
direction, using a battery as the reference, it measures the Charging and Discharging current.
DPM-3321 is a self contained with built in data adapter for data retrieval to PC* via USB port and
for real time monitoring.
In addition to USB, it can be connected through Bluetooth* for Bluetooth model. The new EEPROM
is increased to 3,600 sets of data.
The direction of current is with reference to the receiving end (output) typically a battery.
Current(charging) going to battery is Positive (+) and current out of battery (discharging) is
Negative(-).
The power meter is powered up by 5-60V dc from either side or an external USB power bank for
extended measured dc voltage range of 0-60V.
*Remark: PC software, driver, software and Bluetooth manual can be download from
http://www.manson.com.hk/product/dpm-3321/
Precaution
a. Do not exceed 60V DC in application of DC Meter.
b. This meter is designed and made for indoor use only.
c. Do not disassemble or attempt to repair the power meter.
d. If Start up screen does not appear, immediate remove all input and output connections power
sources.
e. Double check on the correct polarity. If either input or output connection is in wrong polarity,
there is no display on LCD.
f. Damage to the Power Meter may result if wrong polarity power is applied.
g. Do not exert pressure on the display to avoid damage to LCD display.
