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¶b¦V¦ì¸m: 3.937 mV/mm (100 mV/mil) ©Î 7.874 mV/mm (200 mV/mil)
®tµÈ: 0.394 V/mm (10 mV/mil) ©Î 0.787 V/mm (20 mV/mil)
±×±¦¡®tµÈ: 0.394 V/mm (10 mV/mil) ©Î 0.787 V/mm (20 mV/mil) ©Î 3.937 V/mm (100 mV/mil) ©Î 7.874 V/mm (200 mV/mil)
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DC LVDT ´ßµÈ: 0.05 V/mm (1.25 V/in) ©Î 0.08 V/mm (1.90 V/in) ©Î 0.10 V/mm (2.50 V/in) ©Î 0.18 V/mm (4.50 V/in) ©Î 0.20 V/mm (5.00 V/in) ©Î 0.22 V/mm (5.70 V/in)
AC LVDT ´ßµÈ: 28.74 mV/V/mm (0.73 mV/V/mil) ©Î 15.35 mV/V/mm (0.39 mV/V/mil) ©Î9.45 mV/V/mm (0.24 mV/V/mil)
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The Bentley 3500/45 Differential Expansion Monitor is a four channel monitor that receives input signals from eddy current sensors
The 3500/45 differential expansion monitor is a four channel monitor that receives input signals from eddy current sensors and uses this signal to drive alarms. Using the 3500 Rack Configuration Software to program 3500/45, it is possible to perform any of the following functions: differential expansion, compensated input differential expansion, and casing expansion (CH3, CH4 only). The 3500/45 monitor uses a displacement input/output module that can receive input signals from the following Bentley Nevada sensors.
Eddy current sensors: 25, 35, and 50mm extended range sensors and LVDT.
The basic function of the 3500/45 monitor is to provide 1) mechanical protection, which drives alarms by continuously comparing the rotor displacement with the alarm set point at that time. 2) Provide important rotor displacement information to operators and maintenance personnel. Alarm setpoints can be set using the 3500 rack configuration software. Alarm setpoints can be set for each valid proportional value, or danger setpoints can be set for each or both valid proportional values based on the monitor type.
When away from the manufacturer, the 3500/45 is delivered in an unconfigured form. When needed, the 3500/45 can be installed into the 3500 rack for configuration to perform the required monitoring functions.
The 3500/45 differential expansion/axial position monitor is an acceptable
Proximity eddy current sensor, rotational position sensor (RPT)
DC linear variable differential converter (DCLVDT), AC linear variable differential converter
Variable differential converter (AC LVDT) and rotary potentiometer input signal
Number 4 channel monitor.
3500 rack configuration software, 3500/45 can be programmed to complete
The following functions are achieved: axial (lateral) position; Differential expansion; Standard single slope differential expansion; Non standard single slope differential expansion; Double slope differential expansion; Compensated differential expansion; Shell expansion; Valve position
Monitor channels are programmed in pairs, capable of completing up to two functions at a time. Channels 1 and 2 can perform one function, while channels 3 and 4 can perform another (or the same) function. However, only channels 3 and 4 can achieve shell expansion monitoring.
Sensor sensitivity
Axial position: 3.937 mV/mm (100 mV/mil) or 7.874 mV/mm (200 mV/mil)
Differential expansion: 0.394 V/mm (10 mV/mil) or 0.787 V/mm (20 mV/mil)
Inclined differential expansion: 0.394 V/mm (10 mV/mil) or 0.787 V/mm (20 mV/mil) or 3.937 V/mm (100 mV/mil) or 7.874 V/mm (200 mV/mil)
Compensated input differential expansion: 0.394 V/mm (10 mV
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HONEYWELL | 80366189-175 | ABB | PP D539 A102 3BHE039770R0102 |
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Yokogawa | EC401-50 | SIEMENS | A5E42881731 |
BENTLY NEVADA | 177230-02 | ICS TRIPLEX | T8310 |
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