Product Details
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FAQs
Q1: What does the "91" and "CN" suffix mean in the model number?
The "91" indicates a 9.0-meter system length with DIN-rail mounting configuration . The "-CN" suffix designates the China hazardous area approval package, including NEPSI and CCC certifications required for localized hazardous area compliance in the Chinese market .
Q2: What probes and extension cables are compatible with this Proximitor?
The 330780-91-CN is designed exclusively for 3300 XL 11 mm proximity probes and matching extension cables . It is not compatible with 8 mm system components (330180 series). The total system length (probe cable + extension cable) must equal 9.0 meters to match this Proximitor's rated length .
Q3: Can this Proximitor be used as a Keyphasor signal source?
No. While the 3300 XL 11 mm system can measure Keyphasor-related parameters, the 330780 Proximitor Sensor provides continuous distance measurement data, not the precision pulse-per-revolution timing signals required for phase analysis . For Keyphasor applications, a dedicated 3500/25 Keyphasor Module with appropriate probe and I/O is required .
Q4: What is the difference between this model and the 330780-91-00?
The 330780-91-00 is the standard version without agency approvals, suitable for non-hazardous area installations . The 330780-91-CN (this model) includes the China NEPSI and CCC certification package, making it suitable for hazardous area installations in China . Both share the same electrical performance, 9.0 m system length, and DIN-rail mounting.
Q5: What are the typical applications for the 3300 XL 11 mm system?
The 11 mm system is primarily used where greater linear measurement range is required compared to the 8 mm system, including: axial (thrust) position measurements on large turbines, ramp differential expansion on steam turbines, rod position and rod drop on reciprocating compressors, tachometer and zero speed measurements, and Keyphasor reference signals.