I am using an Extech ML720 Multimeter/data logger to measure and log current data from a solar panel. There is no power jack and i have to change and recharge batteries every 3 days.
I am wondering can I connect a DC power supply instead of the battery, or will it damage the meter. The meter uses a 9V DC battery and in the spec it says the power consumption is "2.7mA typical"
I have a "universal AC-DC Adaptor" model "PW00134" but no manufacturers name. I picked it up pretty cheaply a few years ago. It has a switch to change the output to 3V, 4.5V, 6V, 7.5V, 9V or 12V. It also has a power rating of 8.7W and a current rating of "300mA, 3.6V (max)"
If I connect to the mains and check the OC voltage I measure about 12V when set to 9V and measure about 9V when set to 6V.
If I plug into the mutimeter do you think it will blow it? Will it work? What voltage setting do you think I should use (if I should use it at all). mains supply is 230V 50Hz.
I am wondering can I connect a DC power supply instead of the battery, or will it damage the meter. The meter uses a 9V DC battery and in the spec it says the power consumption is "2.7mA typical"
I have a "universal AC-DC Adaptor" model "PW00134" but no manufacturers name. I picked it up pretty cheaply a few years ago. It has a switch to change the output to 3V, 4.5V, 6V, 7.5V, 9V or 12V. It also has a power rating of 8.7W and a current rating of "300mA, 3.6V (max)"
If I connect to the mains and check the OC voltage I measure about 12V when set to 9V and measure about 9V when set to 6V.
If I plug into the mutimeter do you think it will blow it? Will it work? What voltage setting do you think I should use (if I should use it at all). mains supply is 230V 50Hz.