Orientation page for TriMetric model 2020
Please read this first:
Rev: February 2003
(A) INSTALL: Aqualified person should install the TriMetric.
STEP 1: Read (or at least quickly review) section A, pages 2-3 of the manual "METER INSTALLATION-
PRELIMINARY":
STEP 2: Study the wiring diagram on last page of manual.
STEP 3: Install according to sectionB: METER INSTALLATION.
(B) ENTER DATA: To get the TriMetric working the first time, particularly the "Battery % Full" and "Amp-
Hours from full", you need to enter some system data. For "Battery % Full" to work properly, data in Step 2, Step 3 Step
4 and Step 5 (below) must be entered correctly. For "Amp-Hours from full" and "days since charged" to work properly,
data in Step 2, Step 3 and Step 4 must be correct. For "Amps" to read correctly (not off by a factor of 10) Step 4, shunt
type, must be specified correctly.
STEP 1:Refer to table 1 on page 13 of the instructions, which summarizes the TriMetric programmed data that may be
changed, and shows how to change it. To get started enter the data shown below (steps 2 thru 5); later read the
references to the instructions shown on table 1, the last column to "fine-tune" the data.
STEP 2: Enter the "charged setpoint voltage" (refer to first item of table 1, p. 13):Setting all other programmed data is
done in a very similar manner, so once you've done this one, changing the others should be easy.
2.1 Push SELECT until the display showsvolts.
2.2 Press and hold downSELECT--then (quickly!) press RESET. Release both and the volts light should flash and a
number will show in the display -- the "chargedsetpoint" voltage. (If you hold SELECT too long before pushing
RESET the meter will show “Ahr” and you will have to push SELECT a number of times to display volts again,
and try this again.)
2.3 This displayed number must be set to the correct value. PushRESET a few times to change the numbers. As you
do so notice that the numbers increase by .1 with each push. Holding RESET down scrolls the display. (After
the numbers go above 65.0, they cycle back to 10.0 again.) If you have wet cell lead acid batteries, start by
entering 14.3 if you have a 12 volt system, or 28.7 if you have a 24 V system. (More detail on choosing charged
setpoints may be found in section C1, pages 4-5 of the manual.) Put in the number you desire and pressSELECT
again to get out of the program mode.
STEP 3: Enter the "charged setpoint amps": Programming this is similar to STEP 2 except that instead of starting from
the "volts" display, you start from the "Amps" display. Start by programming "OFF". This appears just after 100, and
before 1. "OFF" means that the TriMetric will not use the "amps" data when determining whether the batteries are
charged. If you charge with a generator or other high powered source you should eventually change this or the
TriMetric will declare your batteries are “charged” before they really are. See section C1, pages 4-5 of the manual.
STEP 4: Enter the "charge efficiency factor and shunt type": Programming this is similar to STEP 2 except that instead of
starting from the "volts" display, you start from the "Battery % Full" display. If you have a 500A/50 mV shunt (the most
common) enter "H" (which is the factory default). If you have a 100A/100 mV shunt, enter "L". Use "94" for the
efficiency factor for either Hor L. You should end up seeing either "H94" or "L94" displayed. More detail on setting
"shunt type" and "efficiency factor" may be found in section "C2" of the instructions.
STEP 5:Enter "battery capacity": To give a correct"% BATTERY FULL" display the TriMetric must know how large a
capacity your battery system has. Determine your "battery capacity", that is, the total amp-hours which your battery
systemcan hold when full. Refer to section C4, p.6 of instructions for information about capacity, or ask your dealer who
sold you the batteries what this value is. If you do not plan to discharge your batteries very far we suggest that you
enter a smaller value than calculated capacity--this will expand the scale of your “Batt% ful” display, so that the display
will go down more rapidly as you discharge your batteries. (Alternatively you can have the "%BATTERY FULL"
display show in 1% increments instead of the normal 5% increments: refer to instructions, see section C3.) Please note:
entering the “battery capacity” is a little different from the ones you’ve just done (some people have had problems with
this one!):Follow these steps:(1) while displaying "volts", "amps" or "battery % full", push and hold "SELECT" down
for a few seconds until you see "AH" appear in the display, then release. Now you should
(OVER)
