Instruction Manual

5
PentaMetric summary of functions
For battery systems from 12V to 48V (nominal).
Measure 1 or 2 battery systems with common negative.
With one battery system: battery current plus two charging sources/loads can be measured.
System consists of these possible components:
1.data input unit to collect, process and log data (near batteries). Required component.
2. optional readout unit with LCD display and control buttons
Connect to input unit with 4 wires up to 1000 feet away.
3. optional RS232 computer interface with software to control and read out all data.
4. optional USB computer interface with software to control and read out all data.
5. optional Ethernet/internet computer interface with software to control and read out all data.
Data may be simultaneously accessed and controlled with item 2 and/or any one
of items 3,4 or 5.
Real Time Measurement capability
Basic measurements:
Volts (2 channels) . Accuracy 0.1V. Channel 1: 8-70V. (also supplies meter power). Channel 2: 0-100 volts.
Amps, (3 channels) .01-200 Amps (100A/100mV shunt). 0.1-1000 Amps (500A/50mV shunt) Accuracy 1.5%
least sig. digit. Optional with version 2.0 or greater: Channel 1+2 can be summed to one amps reading for
measuring two shunts for two battery strings in parallel for very large systems.
Temperature (-20 C to +65 C). Requires optional temperature sensor TS-1 with 10 ft. cord.
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
(To measure total cumulative “wear” of batteries)
Smoothed (time filtered) Amps, with time constant of 0.5, 2 or 8 minutes (3 channels)
.01-200 Amps (100A/100mV shunt). 0.1-1000 Amps (500A/50mV shunt)
Smoothed (time filtered) Volts, with time constant of 0.5, 2 or 8 minutes (2 channels) 0-100 Volts.
Watts (2 channels: Volts1x Amps1, and Volts2 x Amps2) ) .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. Memory can hold up to months of data, depending on how frequently and how many
different data are collected. With computer interface these can be output to spreadsheet file.
Log the following from once/day to up to once/minute: Use to confirm that charging systems or loads are
performing normally.
Amp hours (3 channels)
Watt hours (2 channels)
Temperature (min/max) (1 channel)
Volts (2 channels)
Amps (1 channel)
Battery % Full (1 channel)
Log battery discharge profile. Records volts and amps every time charge level changes by 5% (or 10%)This
checks that battery capacity is still OK--.by observing that battery voltage does not decline excessively as charge
level drops.
Log battery charge efficiency factor and average battery “self discharge” current for each charge/discharge
cycle. For each “charge/discharge” cycle: Records cycle length, total amp hours charged, total amp hours
discharged, computed average “self discharge” current and charge (amp hour) efficiency.
Relay output: Supplies voltage at (system voltage) to turn relay on and off at specified voltage levels and/or
%battery state of charge. Maximum current 1 Amp.
Audible and visual alarms: Audible or visual alarms for: “Low voltage or low state of charge”, “High voltage”,
“battery is charged”, “too many days since charged”, “too many days since equalized”
Size. Input Unit and Display unit (equal sizes--including mounting flanges): 4-1/4 in x 6-1/2 x 1-3/4 (10.8 x 16.5 x 4.5
cm) Computer interface: 4 x 2 x 1 in. (10 x 5.2 x 2.5 cm).
Power requirements. Input unit only: 0.5 watt. Input unit plus display unit: While display backlight bright: 1.5
watts. After display backlight dims: 1 watt.