Hydran 201 Sensor - GE Hydran 201 i Instruction Manual

Chapter 2 • Hydran 201Ti Intelligent Transmitter
2.4.3

Hydran 201 Sensor

Mishandling of the H201 sensor (such as a perforation or scratch on
WARNING
CAUTION
the membrane or subjecting the sensor to paint or solvent) voids the
warranty.
The Hydran 201 sensor (see Figure 2-3 on page 2-6) consists of a brass body with the
following components:
• 1-in NPT (25 mm) conical threads at one end.
• The male cable connector, the oxygen breathing hole and the sensor's serial number at
the other end.
• On the top, a sampling port and a bleed screw allow easy sampling of the oil for
Dissolved Gas Analysis (DGA). The sampling port fits the Luer stopcock valve of a
syringe; this port is also used for purging during the installation.
• A thermistor is incorporated in the sensor's body to measure its temperature and, using
mathematical computations, compensate the effect of the temperature on the detector's
signal.
Bleed screw
Sampling port
Breathing
hole
Connector
Sensor's
serial number
2-6
Protective cap
Figure 2-3 - Hydran 201 Sensor
Rev. 6, March 2011
1-in NPT
threads
Part 17997