Precision Filters, Inc.
Since 1975, Precision Filters, Inc. (PFI) has been a global provider of instrumentation for test measurements. You can rely on a single source for signal conditioning and switching—a complete range of instrumentation—products optimized to work together to provide high performance at reasonable cost.
Just Released: Papers and Notes
- Understanding Filter Specification Sheets
- Satellite Test Cell Switch Systems
- Anti-Aliasing Filters Reduce Errors in Data Acquisition
- Signal Conditioning for Rocket Engine Testing
- Signal Conditioning for Exhaust System Measurements (TN-4)
- Balanced Constant Current™ Excitation for RTD Sensor Measurements
- Signal Conditioning for the NASA Vibro-Acoustic Test Facility Plum Brook Station
- Signal Conditioning for Rocket Engine Flow Measurements
- Signal NIST Traceable Testing at the Press of a Button
New High Performance Signal Conditioning for Confined Spaces
Only 10-inches Deep. All Connections via Front Panel.
The Precision SCB family of Signal Conditioners are space saving rack mountable units — 1U high by 10 inches deep. Operator controls and connections are all conveniently located on the front panel.
SCB-16FA-IEPE: 16-Channel IEPE/Voltage Filter/Amplifier
The Model SCB-16FA Signal Conditioner is a programmable 16-channel filter/amplifier with current source for Integrated Electronic Piezoelectric (IEPE) sensors and remote charge converters.
SCB-32CC-100 μA: 32-Channel High Stability Current Source for RTD, Thermistor or Silicon Diode Temperature Measurements
The SCB-32CC-100 μA provides a precise 100 μA DC current source for measuring resistive transducers such as RTDs, thermistors or silicon diodes and is a suitable replacement for the obsolete National Instruments™ SCXI-1503.
PFI Expands the 28000 Product Line
Announcing the Affordable, Portable 28002 Two-Card Frame for Precision Filters’ 28000 System
The 28002 frame holds two transducer cards, giving you up to 32 channels of fully programmable transducer conditioning. Compatibility with the entire line of 28000 cards means you can work with a wide array of transducers: voltage, charge, static or dynamic strain, bridge-type transducers, piezo-resistive accelerometers, load cells, and more. The lightweight, portable frame is at home in the lab, yet rugged enough to take high performance along with you for field applications. And the 28002’s economical cost makes superior performance affordable.
The New Standard for Signal Conditioning in CompactDAQ™ and CompactRIO™
Precision Filters’ family of high-performance signal conditioning modules adds unprecedented function and performance for measurement systems built on National Instruments™ C Series platforms. Choose from five different modules to measure charge, bridge, dynamic strain, IEPE or voltage-based sensors. Count on PFI’s dependable signal conditioning technology for precise measurements.
All modules feature fully programmable gain and excitation and are equipped with Precision Filters’ Test Input for inserting calibration signals at the module input allowing full end-to-end verification. Real time sensor parametric health is continuously measured and reported “on-the-fly”.
Introducing REZCOMP™ Sensor Resonance Compensation
REZCOMP™ technology extends the frequency response of pressure, microphone and accelerometer sensor measurements.
Precision Filters in collaboration with Kulite Semiconductor Products developed the patented REZCOMP technology to extend the frequency response of pressure sensors, accelerometers, microphones and other resonant sensors in real-time with no need for post-processing. Based on a characterization of the sensor Q and resonance frequency, the compensation technique extends the usable sensor bandwidth by a factor of 3 or more.
PFI Welcomes the PFA-2 to Its Family of Filter/Amplifiers
The PFA-2 Two-Channel Compact Filter/Amplifier, Precision Filters’ new compact dual-channel filter/amplifier system, sets a new standard in high-performance signal conditioning at an affordable price.
With low-noise, high common-mode rejection balanced differential input and programmable AC/DC input coupling, the PFA-2 is ideal for conditioning static or dynamic signal inputs. Its versatile 6-pole low-pass filters can address applications in the time domain, such as shock measurements, or in the frequency domain, such as spectral analysis or anti-aliasing applications.
PFI’s Precision Products
28000 Signal Conditioning System and Components
- 28000 Signal Conditioning System Overview
- Bridge and Strain Conditioner Cards
- Charge and IEPE Conditioning Cards
- 28000 Voltage Filter/Amplifier Cards
- Thermocouple Conditioner
- Frequency-to-Voltage Conditioner
- Acoustic/Vibration Conditioner
- 28000 Test Subsystem
- Flat/Pulse Low-Pass Filter Technology
- 28000 Accessories
Voltage Filter/Amplifier Systems & 28000 System Filter/Amplifier Cards
High Performance Signal Conditioning for Confined Spaces
- Precision SCB-16FA-IEPE: 16-Channel IEPE/Voltage Filter/Amplifier
- SCB-32CC-100 μA: 32-Channel High Stability Current Source for RTD, Thermistor or Silicon Diode Temperature Measurements
Precision C Series Signal Conditioning Modules
High Density Programmable Signal Switching Systems