CENTROID PRODUCTS

Description

CompuTank is a computerized liquid level measurement and display system. It is controlled by software, and can thus be adapted to meet a customer's requirements.

Features

Multi-tank Display: CompuTank's two-line by 16-character backlit LCD display can replace up to 16 gauges in a multi-tank system, saving control panel space. The display can be selected to cycle through the tanks, or to display an individual tank continuously. Displays up to 99,999 gallons or liters.

Tank Shape Correction: During calibration, CompuTank can be taught what quantities of fuel correspond to what fuel heights. This means you will get a correct gallon display even with a non-rectangular tank. If shape correction is not required, probes custom-built at the factory need not be calibrated, and other probes need only have their Empty and Full set.

Time Remaining: CompuTank calculates time to Empty at the current rate of consumption, gallons
used for the entire trip, and gallons between waypoints.

Battery Voltage: CompuTank monitors your battery voltage at rest, during startup, and while the
engine is running, helping to detect problems with your electrical system.

Adaptability: CompuTank's software programmability allows us to add features to meet your needs.

Supply Voltage: 12VDC @ .25A standard (plus any current required for external alarms).
24VDC or 32VDC optional.

Dimensions: Requires 4.0" h X 5.5" w of panel space with bezel. Extends approximately 2" behind the panel, plus 1" for cabling. Panel cutout is 3.25" h X 4.5" w.

Operating Environment: The CompuTank unit is rated to operate between 32 and 120 degF (-4 to 160 degF optional).

Inputs and Outputs: CompuTank accepts up to 8 tank inputs in the standard configuration, or up to 16 as an option. It has two standard alarm outputs. One is a flashing LED on the front panel, with ground closure (0.3 amps) on the back panel. The other is a ground closure (0.3 amps) on the back panel which can be connected to the light or siren of your choice, and comes on only at the beginnings of alarm conditions. Normally, these will be sufficient, with the display indicating the cause of each alarm type (low or high liquid levels or battery voltage). Extra alarm outputs can be provided for special applications.

What you need to know before ordering: CompuTank is designed to work with Centroid's 0/5 volt Electronic Sending Units (Refer to Electronic Sending Unit Data and Price sheet for description and cost). Adapters are available if you are going to use your existing float units or other style probes. The CompuTank computer can be programmed by the user, or at the factory, depending whether cost or convenience is the more important factor.

How to program (customer):

Tank Identification: Tank assignment and identification can be done via menus which are shown on the CompuTank computer's display. You can select tank names, tank capacities, gallons (liters) or percent, and alarm levels, using the two buttons on the CompuTank front panel.

CompuTank Computer Calibration: By default, CompuTank treats each tank as if it were rectangular; ie, as if each inch of tank height contains the same number of gallons. For some tanks, this is literally true, and for some tanks this is close enough to be satisfactory. In these cases, no calibration is required.

For tanks which have significant "V", or other unusual shape, the two buttons on the CompuTank front panel can be used to enter level corrections. The computer is programmed in 8ths of a tank by volume, starting from empty. For example, with an 80 gallon tank, you would push a button when you had filled it to 10 gallons, to 20 gallons, the 30, 40, 50, 60, 70, and 80 gallons. The possible difficulties are: Being able to start from an empty tank and do a complete fill; and, in the case of a water tank, having some way of knowing how many gallons you are putting in.

Alternate calibration method: It is not necessary to go to the trouble of filling your water tank if you have an inch/gallon chart. Mark the probe at the 1/8th tank increment points. Get a PVC tube and cap one end. Fill the PVC tube with water and insert the probe to 1/8th tank mark and enter gallons. Repeat step for remaining 1/8th's until calibration is completed.

Programming (Factory):
See factory calibration sheet for charges and information required.

2104 HIBISCUS DR. EDGEWATER, FL 32141 - TEL : 386-423-3574 FAX : 386-423-3709