What is the typical Exradin Ion Chamber leakage?
• All Exradin chambers should exhibit leakages on the order of 10 x 10-15 amps or less. In general, how do I properly zero the electrometer + extension cable + ion chamber system? Note: These instructions apply to usage with Standard Imaging electrometers. Please refer to your electrometer’s documentation for specific details. • With nothing connected to the input jack of the electrometer and the dust cap on, turn the power on and wait for the electrometer’s designated warm up time. • If applicable, select the desired operating range as described in the electrometer’s user manual. • Perform a system zero as described in the electrometer’s user manual. • Connect the ion chamber (and extension cable, if used) to the electrometer and select the desired voltage bias. Allow at least 10 minutes for the system to stabilize. • Verify the leakage of the ion chamber is within the manufacturer’s stated acceptable limits. • Repeat the zeroing process as in step 3, but now with the ion chamber (and
