Other Products
Strain
FE-(H)389-TA
The latest in a line of transducer amplifiers providing features demanded by our customer’s experiences of decades of D.C. bridge applications. The FE-(H)389-TA is a high performance DC Bridge / Transducer Amplifier replacing both the FE-379-TA & FE-H379-TA amplifiers and is available in two versions.
The standard FE-389-TA has a bandwidth of >1MHz and gains from x10 to x5000. The standard version is hardware upgradable to the FE-(H)389-TA version.
This provides an increased gain range (x5 to x10000) and a SMART Input Stage that automatically configures itself to provide the lowest noise or highest bandwidth (>2MHz) depending on the Front Panel settings. Because of the SMART Input Stage the output noise of the FE-(H)389-TA with a >2MHz bandwidth is substantially lower than that of the FE-H379-TA (bandwidth 500kHz).
FE-489-DSA Dynamic Strain Gauge Amplifier
The FE-498-DSA is a battery powered portable dynamic strain gauge amplifier for use with a single 120Ω or 350Ω strain gauge. A low noise constant current supply of 10mA generates 1.2V across a 120Ω gauge or 3.5V across a 350Ω gauge. The gauge is AC coupled into a high gain low noise amplifier followed by a user programmable low pass filter. The arrangement allows dynamic signals to be measured very accurately using a single gauge. The complexity of gauge wiring has been reduced to a single twisted pair, and no bridge completion resistors are required. No balance controls are required as the system only responds to dynamic signals. The unit is charged via a USB-C port, and a full charge gives over 15 hours use. To preserve battery life, the unit automatically turns off after 60 minutes of inactivity.
Vibration
Acceleration
Charge Amplifier FE-128-CA
High performance charge amplifier with calibrated controls, covering the range 1pC to 50,000pC and developing ± 10V output. The amplifier has good L.F. response and quasi-static performance with high frequency response up to 100 kHz. A range switch and calibrated ten turn dial match the unit to the transducer sensitivity. A separate switch allows the number of mechanical units per volt of output to be set. The module’s low pass filter cut off frequency is easily changed using a plug in resistor pack. . A compatible wide range integrator is available – see FE-294-IA.
Charge Amplifier FE-128-CA-H
This module is similar to the standard FE-128-CA but converts higher charge signals (up to 500,000 pC for ±10V output.)
FE-071-HA/C IEPE Head Amp for Low Source Resistance Source
A series of in line head amplifiers which can be used when Charge Transducers have low impedance due to elevated temperature.
FE-074-HA/C Compact Head Amplifiers for Charge Accelerometers
The FE-074-HA/C is a charge amplifier for application as a head amplifier in IEPE type systems using nominally 2-4 mA. Versions are avaialble with a sensitivity of either 1mV/pC or 10 mV/pC. The unit transmits AC signals on coaxial cable and is compatible with IEPE sources of 2-6 mA. The frequency response extends from approximately 1 Hz to 25 kHz with a dynamic range extending up to 2V RMS. Connection is BNC or microdot input and BNC output.
Differential Charge Head Amplifier FE-077-DCA
The FE-077-DCA is intended for use with double ended (differential) accelerometers typically used for machine vibration monitoring. This is an ICP device powered by a current in a coaxial cable which also carries the signal to the receiver amplifier. For a compatible receiver amplifier, see the FE-530-IE.
Capacitance
Capacitance Displacement Amplifier FE-596-CDT4
The FE-596-CDT4 is a 4 channel Capacitance Probe system for gas turbine measurements of blade tip clearance and time of arrival. The system has high bandwidth [0.16Hz to 375kHz -3dB (-0.1dB >200kHz)] and low noise [0.5aF/√Hz] which facilitates vibration analysis applications. Both triaxial fully guarded and low capacity pseudo triaxial type probes may be used. Probes may be situated up to 30m away from the FE596CDT4 by using a combination of Mineral Insulated (MI) & Low Capacity Triaxial Extension (LCTE) cables. Remote configuration and monitoring over a LAN or WAN is very simple and powerful. Auto-Tune & Auto-Balance commands quickly optimise the FE596CDT4 to work with any connected Probe / Cable combination. Gains may be set over a wide range to achieve the best possible Signal to Noise Ratio (SNR), whilst avoiding clipping with large signals. Commands allow for diagnosis of both System and Probe health. Multi-colour LEDs indicate the status of each channel.
Capacitance Displacement Amplifier FE-419-CDT
Designed for measurements up to 1 kHz in high temperature environments where long cables (coax or triax) are often necessary. The FE-419-CDT overcomes the difficulties of operating guarded capacitive sensors to measure clearances in applications such as turbines. The output is proportional to distance from the target and standard modules operate with transducers with target capacitance ranging from 2.5 pF down to 0.025 pF
Capacitance Displacement Amplifier FE-420-CD
This module differs from the FE-419-CDT in giving greater sensitivity at the expense of reduced tolerance of cable capacitance. (2 m cable lengths are recommended.) Measurement distance depends mainly on the transducer type and can range from microns to centimetres. It is suited to applications involving extremely small distance variations and fast rise times.
Capacitance Displacement Amplifier FE-549-CDT
Featuring a unique transformer coupled pre amplifier the energisation level is raised to 40V p-p which brings beneits to noise and stability. The unit is driven from a common oscillator utilising individual power buffers, and the problems of beating which may be associated with multichannel CDT systems are thus avoided.
Other
Differential D.C. Amplifier FE-351-UA
Offering very low noise and drift performance, this differential d.c. pre-amplifier has a gain range from x0.2 to x10,000 (±0.1%) using switched attenuator and switched and vernier gain controls. Offset and calibration controls are provided. An on board auxiliary socket can accept a plug in 4 pole low pass filter. A front panel LED illuminates when fitted.
16 Channel Digital Monitor FE-M16-DS
A 16-channel digital monitor, the M16-DS is ideal for use in any FYLDE enclosure where it will monitor and display the outputs from each installed module. It provides a switchable selection for 16 differential inputs or 32 single ended inputs. The monitor will also measure A.C. with its built in precision rectifier scaled for RMS. A peak hold function completes the display options for time varying signals. A front panel BNC socket enables additional monitoring equipment to be connected.
