GE Hydran 201i, Instruction Manual, Page: 100 / 300

Chapter 5 • Before Installation
5-2 Rev. 6, March 2011 Part 17997
2. Do not remove the protective plastic caps from the sensor and/or the brass adaptor’s
threaded extremity until ready to install on the transformer valve. These caps protect
the adaptor threads (see Figure 5-1 on page 5-1) and the sensor membrane from
debris and sharp objects. If the sensor is unmounted, place immediately the supplied
cap onto the sensor’s threads.
3. Do not touch the H201 sensor’s membrane (located inside the threaded extremity)
with a finger or an object (see Figure 5-2 on page 5-2). The membrane is easily
impaired; this would damage the sensor permanently, thus voiding the warranty.
4. Do not block or puncture the sensor’s breathing membrane . Located above the
sensor’s connector (see Figure 2-1 on page 2-3), this opening provides oxygen to the
gas detector inside the sensor. Blocking or puncturing this membrane damages the
sensor permanently, thus voiding the warranty.
CAUTION
WARNING
Mishandling of the Hydran 201 sensor (such as a perforation or
scratch on the membrane or subjecting the sensor to paint or
solvent) voids the warranty.
Figure 5-2 - Do Not Touch the Membrane