Bentley Nevada 99005-50-01-00 2-Wire Vibration Transmitter

The principle of the two-wire transmitter is that it uses a 4 to 20mA signal to supply itself with electrical power. If the transmitter draws more than 4mA, it will not be possible to output the lower 4mA value. This is one of the fundamental principles of the two-wire transmitter design. In terms of overall structure, the two-wire transmitter consists of three main components: the sensor, the conditioning circuit and the two-wire V/I converter. The sensor converts physical quantities such as temperature and pressure into electrical parameters, while the conditioning circuit amplifies, conditions and converts the weak or non-linear electrical signal output from the sensor into a linear voltage output. The two-wire V/I converter circuit controls the overall power consumption current based on the output of the signal conditioning circuit; at the same time the voltage is obtained from the loop and regulated for use by the conditioning circuit and the sensor. With the exception of the V/I converter circuit, each part of the circuit has its own current draw. The core design idea of the two-wire transmitter is to include all currents in the feedback loop of the V/I converter. As shown in the diagram, the sampling resistor Rs is connected in series at the low end of the circuit and all current will flow through Rs back to the negative side of the supply. The feedback signal taken from Rs contains all the power consumed by the circuit. In a two-wire transmitter, the total power consumption of all the circuits must not be greater than 3.5mA, making the low power consumption of the circuit a major design challenge.

The Bentley 3500 system is used for vibration monitoring and protection of large machinery. The Bentley 3500 system must be equipped with the frame 3500/05, the power supply 3500/15, the frame interface module 3500/22M.
bently 3500 Bentley power supply high voltage AC 220V, spare parts as follows
127610-01 AC power supply module
125840-01 High voltage AC power input module (PIM)
125840-02 Low voltage AC power input module (PIM)
129486-01 High voltage DC power supply module
129478-01 High Voltage DC Power Input Module (PIM)
133292-01 Low Voltage DC Power Supply Module
133300-01 Low Voltage DC Power Input Module (PIM)
01720025 Spare fuses (two types of AC PIM and high voltage DC PIM)
01720045 Spare fuse (low voltage DC PIM)
129767-01 Power Supply Operation and Maintenance Manual
The Bentley power supplies bently 3500/15 are available in the following order information and model numbers
3500/15-AXX-BXX-CXX Description of options
A: Power supply type (upper slot)
01 Low voltage AC (85-132 Vac rms)
02 High voltage AC (175-264 Vac rms)
03 High voltage DC (88-140 Vdc)
04 Low voltage DC (20-30 Vdc)
05 Universal AC power supply (85-264 Vac rms) (new)
B: Power supply type (lower slot)
00 No power supply (only for use where a single power supply is required)
01 Low voltage AC (85-132 Vac rms)
02 High voltage AC (175-264 Vac rms)
03 High voltage DC (88-140 Vdc)
04 Low voltage DC (20-30 Vdc)
05 Universal AC power supply (85-264 Vac rms) (new)
C: Approved unit options
00 None
01 CSA/NRTL/C
02 ATEX/IECEx/CSA (Class 1, Zone 2)
CN China
The specific models are as follows
3500/15 (front panel 127610-01, rear back panel 125840-01)
3500/15-02-02-00, upper slot & lower slot both fitted, so dual power supply
3500/15-02-00-00, upper slots fitted, lower slots not fitted, so single power supply
3500/15-05-05-00, both upper and lower slots, so dual power supply
The following are the upgraded 3500/15 universal AC power modules:
3500/15 (front panel 106M1079-01, rear back panel 106M1081-01)
3500/15-05-05-00, both upper slots & lower slots fitted, so a dual power supply set
3500/15-05-00-00, upper slot fitted, lower slot not fitted, so single power supply set

99005-50-01-00

Bently Nevada product structure diagram.
I. Monitoring System
1. Continuous online monitoring system
A.3500 Series
B.3300 Series
C.1900 Series
D.ADAPT Wind Wind turbine online monitoring
2. Patrol online monitoring system
A. Inspection and monitoring
B.Essential Insight.Mesh wireless solution
C.AnomAlert motor anomaly detection
II.Sensor
1.Eddy current sensor
2.Velocity acceleration sensor
3. Pressure sensors
4. Housing expansion and valve position sensors
5. Optical sensors
Portable diagnostic instruments
1. Portable diagnostic equipment ADRE system: ADRE 408 DSPi hardware
Peal. Portable data acquisition and analyser: SCOUT100/140
IV. Test and calibration equipment
Eddy current probe calibrator:TK-3 condition monitoring calibrator
Other test and calibration equipment: Testers for TIM testing using Snapshot
High accuracy micrometer
Rotor test benches
Velomitor power supply module keyed to signal multiplier/divider torsional vibration signal conditioner oscilloscope excuse module

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