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HOME  Balance of Systems  Meters

  PentaMetric USB Computer Interface    


List Price(CAD): $119.00 per Each
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Item Code: PM-102-C
Brands: Bogart Engineering
Manufacturers : Bogart Engineering
Categories: Meters



The PentaMetric battery monitor system offers a lot more capability than the TriMetric monitor. It measures 1 or 2 battery systems with a common negative. With one battery system, battery current plus two charging sources/loads can be measured.

Access data using LCD display unit and buttons up to 1,000 ft. from batteries. Relay output to control generator or external alarm. Audible and visual alarms for high and low battery conditions.

Complete system consists of 3 parts: Input unit (near batteries), Display unit (shown) and computer interface unit. The computer interface unit is available as an RS232, USB, or Ethernet connections.

Monitor up to 3 shunts--For example: measure total solar input and wind input independently in addition to monitoring battery "state of charge".

Access the data with display unit (shown) with LCD display and buttons up to 1000 feet from batteries. Optional computer interface with (Windows) software to control and read out all data.

  • Extensive system logged data
  • Relay output to control generator or external alarm
  • Audible and visual alarms for high and low battery conditions

Real Time Measurement Capability

Basic measurements:

Volts (2 channels) 8-100 volts. For example, you can monitor volts from two battery systems. Or battery voltage, plus the solar array voltage if you have a peak power point tracking controller. Amps, (3 channels) .01-200 Amps (with 100A/100mV shunt). 0.1-1000 Amps (with 500A/50mV shunt). Each of these requires a separate shunt. There are many different ways these can be used. For example one channel can be used to keep track of battery system energy content and the two remaining ones can be used for separate measurement of two charging sources, such as total solar or wind production. Or two battery systems can be separately monitored if they share a common negative connection--and in addition one charging source could be separately monitored. Temperature -20 to +65 degrees C.

Secondary measurements derived from basic measurements

Amp hour (3 channels) to 83,000 Amp-hours Cumulative (negative) battery amp hours. (2 channels) to -1,000,000 amp-hours. This measures accumulated amp hours (usually from a battery) only when the amps value is negative. Its purpose is to measure the total cumulative 'wear' of batteries during their lifetime.

Smoothed (time filtered) Amps, with time constants of 0.5, 2 or 8 minutes (3 channels) .01-200 Amps (100A/100mV shunt) 0.1-1000 Amps (500A/50mV shunt). For example, this can be used to show a more accurate estimate of wind charging input when the wind source is varying in speed.

Smoothed (time filtered) Volts (2 channels) 0-100 Volts. The smoothed values for both Amps and Volts are used for triggering "alarm" and relay functions so very short term anomolies will be ignored. 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. "Periodically logged data" can record any or all of the following at regular intervals: once per day to up to once per minute: * Amp hours (3 channels) * Watt hours (2 channels) * Temperature max/min (1 channel) * Volts (2 channels) * Amps (1 channel) * Batt%Full (2 channels).

2. "Battery discharge voltage profile" data logs volts and amps every time charge level changes by 5% (or 10%) for 1 or 2 battery systems. This checks that battery capacity is still OK--by observing that battery voltage does not decline excessively as charge level drops.

3. "Battery cycle efficiency data" documents system efficiency for up to 2 battery systems. For each 'charge/discharge' cycle, it records cycle length (hours), total amp hours charged, total amp hours discharged, computed average 'self discharge' current and charge (amp hour) efficiency.

Controls and alarms

Relay output - Control external relay to go on and off at specified voltage levels and/or battery state of charge levels. "On" and "off" levels can be independently set.

Returns Available/Warranty
Return for credit:30 Day(s)
Return for repair/replacement:1 Year(s)






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