Page 77 - 2010-2022 hose manufactureing ability and guide

13.0 Procedure for measurement of electrical discontinuity:

In certain types of hose which contain wire in the hose carcass, it is required that such wire
be insulated from the end fittings (rubber compounds should also be non-conductive). In
these cases, condition the hose per lab testing or agreed upon factory environmental
conditions. Measure the resistance between the fittings using a 500-volt insulation tester, or
other suitable instrument known to give comparable results.

It is essential that contact resistance between the end fittings and the ohmmeter be
minimized.

Apply the metal contacts to the metal end fittings.

Apply the test voltage and measure the resistance 5 seconds ± 1 second after the voltage is
applied.

14.0 Test Report

The test report shall include items a) to e) and, as appropriate f) to k):

a) Hose type and inside diameter (ID).
b) Reference to this test procedure.
c) Conditioning and test atmosphere, i.e. temperature and relative humidity.
d) Distance between electrodes.
e) Electrode material used.
f) Resistance, in ohms per foot, of the hose tube detailing individual readings.
g) Resistance, in ohms per foot, of the hose cover detailing individual readings.
h) Resistance, in ohms per foot, of the hose tube to hose cover detailing individual
readings.
i) Resistance, in ohms per foot, of the hose assembly between couplings detailing
individual readings.
j) Whether electrical continuity has been established.
k) Resistance, in ohms/length, obtained when establishing electrical discontinuity.

RMA/IP-2/2003 56