Portable Survey Instrument for Evaluating Resistive Properties of Static Control Products
The Monroeᵀᴹ 291 uses parallel metal contact rails and jacks for connections to external electrodes or ground to measure both resistivity and resistance-to-ground. The instrument is easy-to-use, pocket-sized, and uses a twelve LED color-coded display to accurately and quickly show measured decade values. To measure the surface resistivity of a flat sample, place the instrument on the material with the rails contacting the material and press the test button. For surface-to-ground or point-to-point measurements, make connections to one or both of the banana jacks on the end of the instrument. When a banana plug is inserted, the corresponding contact rail is disconnected.