MV-WI0013 Truck-Scale Indicator for Analog Load Cells

METRAVON MV-WI0013 is a truck-scale weighing indicator for analog load-cell systems. It supports one to twelve 350 ohm sensors or one to twenty-four 700 ohm sensors, with a six-wire input and 5 V DC excitation. For a retrofit, establish the bridge type and existing ticket workflow before checking the display or printer options.

Check the weighbridge input before replacing the indicator

The two sensor-count limits describe different bridge-resistance cases; they are not additive. Request an electrical review for a mixed installation. A truck scale fitted with digital load cells also needs a different compatibility assessment: this analog input specification does not establish support for their digital bus.

Retain the old indicator's calibration records and connection diagram, but plan to commission the replacement on the installed scale. Equivalent-looking settings do not prove equivalent readings. Compare zero return, repeatability and loaded results using the site's approved weighing test procedure.

Define the vehicle and ticket records

The listed storage capacities are 1,000 vehicle-number/tare entries, 200 incomplete records and 1,000 weighing records. These are distinct record types, not one combined pool of complete transactions. Confirm the required vehicle identifier format and how the supplied version retrieves, completes and clears records.

Use a representative incoming/outgoing weighing sequence to check the displayed and printed gross, tare and net values. Include a vehicle without a stored tare and a transaction that is completed later. Agree how records will be retained outside the indicator when the site needs longer-term history; the listed storage counts do not promise an unlimited archive.

Serial equipment and optional printing

The references list RS232/RS485 communication at selectable 600-9600 bit/s and an RS232 remote-display output, but their connector descriptions differ. One identifies a D-SUB RS232 connection; another describes serial and parallel-port arrangements with a USB virtual COM option. Obtain a port-by-port schedule for the supplied build and assign the computer, printer and remote display to actual connectors. Neither a family diagram nor a rear-panel photograph establishes that all listed interfaces can be used simultaneously.

An embedded printer is optional, and USB is also marked as an option. For an external ticket printer such as MV-WA0009, confirm the print commands, cable and a sample ticket rather than assuming compatibility from the serial connector.

Confirm the actual mains and external-battery arrangement

The mains descriptions use both 110-220 V range wording and 110/220 V nominal wording. Request the rated input of the offered unit rather than treating those descriptions as an approved universal supply. The reference photograph also represents one particular rear-panel build. The external 12 V/7 Ah lead-acid battery is a separate supply arrangement; confirm its connection, charging equipment and any power-transfer behaviour. A battery-capacity figure does not establish automatic backup or an operating duration with the selected printer and peripherals.

Weighbridge replacement questions

Send an MV-WI0013 replacement enquiry with the current indicator and sensor models, bridge resistance, sensor count, ticket sample and peripheral list. Include the required capacity, division size and documentation so the quotation addresses the installed weighbridge rather than only the front-panel appearance.