Panametric

The new Pentametric battery monitor system offers a lot more capability than the TriMetric monitor. The complete system consists of 3 parts: input unit (near batteries), display unit (shown here) and computer interface unit. It can monitor up to 3 shunts: For example; measure total solar input and wind input independently in addition to monitoring battery "state of charge." You can access the data with display unit with LCD display and buttons up to 1000 feet from the batteries. An optional computer interface with Windows software allows you to control and read out all data from the computer. It has a relay output to control a generator or external alarm and it has audible and visual alarms for high and low battery conditions. 2-year warranty.

8-conductor wire is ok for measuring one battery. One additional conductor is required for two batteries. See table bottom left.

Basic measurements:

2 voltage channels: 8-100 volts. (For example you can monitor volts from two-battery systems).
3 amperage channels .01-200 amps (with 100A/100mV shunt). 0.1-1000 amps (with 500A/50mV or 1000A/10mV shunt). Each of these requires a separate shunt.
Temperature -20 to +65 degrees C.

Secondary measurements:

Amp-hour (3 channels): to 83,000 amp-hours
Cumulative (negative) battery amp-hours (2 channels)
Smoothed (time filtered) amps
Volts (2 channels): 0-100 volts
Watts (2 channels) .01- 20,000 watts
Watt-hours (2 channels) 21,000 kilowatt hours
Battery % full (2 channels) 0-100%
Days since batteries charged (2 channels) .01-250 days
Days since batteries equalized (2 channels) .01-250 days

Data logging functions

There are 3 types of data logging functions. With the computer interface all 3 types can be output to spreadsheet file.

1. In Periodically Logged Data mode you can record any or all of the following at regular intervals ranging from once per day to once per minute: amp-hours (3 channels), watt hours (2 channels), Temperature max/min (1 channel), volts (1 channel), amps (1 channel)
2. The Battery Discharge Voltage Profile logs volts and amps every time the charge level changes by 5% (or 10%) for 1 or 2 battery systems.
3. Battery Cycle Efficiency documents system efficiency for up to 2 battery systems.