TECHNICAL SPECIFICATION
Model Number
COUMET60100HB
COUMET60100SB
Maximum Operating Values
Voltage Operation Range
+5.5Vdc to +60.0Vdc
+6.5Vdc to +60.0Vdc
...with Aux Power Supply
0.0Vdc to +60.0Vdc
0.0Vdc to +60.0Vdc
Maximum DC Current
+/-70Adc sustained
+/-70Adc sustained
Maximum Peak Current
+/-170A for less than 3 seconds
+/-170A for less than 3 seconds
Input Current from Source or Load
28mA +/-10%
8mA to 149mA*
...with Aux Power Supply
<1mA
<1mA
Measurement Capabilities
Voltage Detection Resolution
10mV
10mV
Current Detection Resolution
100mA
100mA
Current Measurement Accuracy
+/-1% from 2A ~ 170A**
+/-1% from 2A ~ 170A**
Sample Resolution
8Hz (every 125mSec)
8Hz (every 125mSec)
Clock Resolution
+/-2%
+/-0.5%
Max Energy Recordable Value
+/-2,147,483,648 Joules (watt
seconds)
+/-2,147,483,648 Joules (watt
seconds)
Max Clock Recordable Value
65,536 days
65,536 days
Recording Capability
MicroSD Card Size Capability
n/a
FAT32, up to 128GB
SELECT or ENTER Screen Timeout
10 seconds
10 seconds
* Device current depends on source voltage. Higher the voltage, the lower the current.
** Current accuracy depends on proper calibration.
PRODUCT OPERATION
Connections:
The Metiri™ Smart Energy Meter prod
uct line is an inline voltage, current, and energy measurement
device with all of the features and tools a solar enthusiast, RC hobbyist, or Scientific community would love.
The Metiri™ Smart Energy meter is in series with a pair of pure copper 10 AWG wires, one
RED
and one
BLACK
in
color. The
RED
wire is the positive or power wire and the
BLACK
wire is the return or ground wire. Metiri™ measures
voltage between these wires and uses a low side resistive shunt for monitoring current. The two exposed wires closer
to the USB connector should be connected to a power source or battery, and the two exposed wires farthest from the
USB connector should be connected to a power load or battery.
CAUTION
:
Do not place a negative voltage or reverse the voltage polarity of the wires or damage to the Metiri™, and
your system, might occur.
WARNING
:
Always install and in line fuse rated for no more than 200A in series with the Metiri™ Smart Power Meter
Device Power:
The Metiri™ Smart Energy Meter will get the power it needs to run from the wires it is measuring and
requires a minnimum voltage accross those wires to function. If a voltage is desired to be measured that is lower than
the minimum voltage, auxilliary power will be needed. The Metiri™ products provide an auxillary power input using a
readily available mini USB connector. Simply plug in a mini USB cable into Metiri™, and the other end into any USB
power source, and Metiri™ will shut down its internal regulator, running off of the USB power only.
Device Measurement:
When opperating Metiri™ from the Auxilary USB, the Source or Load cables should not be left
unconnected (otherwise known as high impedance) or leakage will cause incorrect measurements to occur.
In order to take accurate current measurements, it is important to understand that the minimum current resolution is a
percentage of the maximum current the unit is designed to read. The higher the current capability desired, the lower
the sense resistance needed to keep from overheating and thus less signal to noise.
Safe Operating Current:
The Metiri™ products are fully bi-directional and will record current flowing in either
direction. This makes the Metiri™ products perfect for monitoring energy flowing in and out of a system battery bank.
The Metiri™ products attempt to interfear as little as possible with current moving through it. Therefore the user is
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