3500/61 133811-02 Bently Nevada monitor power supply

Description

The 3500/61 133811-02 following specifications apply at 72° F (22° C) with -24.0 ± 0.l Vdc supply, 10k ohm load, and AISI E4140 steel target; and when test equipment is used with accuracy as specified by BNC Specification 150980

A. Calibrated Range

B. Average Scale Factor Over Calibrated
Range
Typical (90%)
Worst Case (99.7%)
Bench Calibration

C. Incremental Scale Factor (Derivative) Over Calibrated Range in 20 mil (0.51 mm) Increments
Typical (90%)
Worst Case (99.7%)
Bench Calibration, average scale factor adjusted for 100 mV/mil (3.94 V/mm)
160 mils (4.06 mm) beginning at -2.0 Vdc — approximately 20 to 180 mils (0.51 to 4.57 mm)
100 ± 3.0 mV/mil (3.94 ±0.12 V/mm)
100 ± 7.0 mV/mil (3.94 ±0.28 V/mm)
Can be adjusted with the Proximitor calibration resistor for exactly 100 mV/mil (3.94 V/mm)
See Appendix C, Figure C-1
100 ± 10 mV/mil (3.94 ± 0.39 V/mm)
100 ± 16 mV/mil (3.94 ± 0.63 V/mm)
100 ± 10 mV/mil (3.94 ± 0.39 V/mm) in 20
mil (0.51 mm) increments over 160 mil (4.06 mm) range starting at -2.0 Vdc

The following specifications apply at 72° F (22° C) with AISI E4140 steel target and when test equipment with accuracy as specified by Bently Nevada Corporation specification 150980 is used. Typical is defined as 90% (2 sigma) of extension cables built, and worst case is defined as 99.7% (3 sigma) of extension cables built.

1. Calibration Range 160 mils (4.06 mm) beginning at -2.0 Vdc, approximately 20 to 180 mils (0.51 mm to 4.57 mm)

2. Interchangeability Error with 14 mm System
a. Average Scale Factor Change i Typical ii Worst case
Less than 1.3 mV/mil (51 mV/mm)
Less than 2.4 mV/mil (94 mV/mm)
b. Voltage Change at Same Gap (Max) i At midrange 120 mils 3.0 mm) ii Near beginning of range, 20 mils (0.51 mm)

3. DC Resistance, Nominal
a. Center conductor
b. Shield

4. Capacitance

5. Characteristic impedance
0.7 Vdc
0.4 Vdc
0.354 ohms/ft (1.16 ohms/metre)
0.017 ohms/ft (0.06 ohms/metre)
15.4 pF/ft (50.5 pF/metre) 95 ohms

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Contact Person: Chen

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