5 Key features
5.3 Meter proving
Honeywell 2024
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5.3.2 Proving dongle indicators
5.3.2.1 Proving dongle
The infrared prover dongle is a device that can be connected to the IrDA data port on EC350. It receives IR
LED pulses from EC350 and converts the appropriate pulses into electronic switch contacts. This allows a
rotary meter with the EC350 to be tested as a unit without breaking the meter seal. The following image
illustrates an IR proving dongle.
Prover dongle indicators
The following image illustrates a prover dongle indicators.
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PULSE: A red light appears to indicate that the electronic switch to the Model-5 prover is closed.
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LINKED: A green light appears to indicate that EC350 and the prover dongle are synchronized.
This must be ON when you are in the Pushbutton Proving mode.
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CPU OK: A yellow light appears to indicate that the prover dongle is powered and is operational.
Ensure that the yellow light is always ON during operation. If the light goes off, it indicates that
the prover dongle does not receive the 5V power supplied by the computer.
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