Whunicut wrote:

Not on the meter or in the literature is there anything about the power rating.
Other than 6 volts.
If the meter spikes every 3 minutes or so, how can I measure the spike? Or do I
have to?

You would need to know what type of Hobbs meter it is.
You could ask Hobbs:

http://content.honeywell.com/sensing...p/cat1_hr5.asp

For your purposes, however, a one watt Zener would work with any
Hobbs-type meter I've seen, be it electronic or electromechanical. But
I would not tell someone else to use it without measuring the current.
Put a one Ohm resistor in series with the Hobbs meter. Apply 12 volts.
Measure the voltage across the resistor. You will read current in Amps.
Alternatively, you could use an ampmeter. Assuming it is an averaging
meter, at DC: Volts(12)*Amps(what you measure)= average Watts. Pick a
power rating for the Zener that is greater than the power you measure.
Zener diodes are available at Digi-Key.
Here is a typical data sheet:

http://rocky.digikey.com/WebLib/Micr...8A-1N4764A.pdf

When's my ride?

Kevin Gallimore




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