Posted on October 8, 2020 by Jeff -
Overview
The FMA Series are piezoresistive-based force sensors offering a digital output for reading force over the specified full-scale force span and temperature range. They are fully calibrated and temperature compensated for sensor offset, sensitivity, temperature effects, and nonlinearity using an onboard Application Specific Integrated Circuit (ASIC). Direct mechanical coupling allows for easy interface with the sensor, coupling with tubing, membrane, or a plunger, providing repeatable performance and a reliable mechanical interface to the application. All products are designed and manufactured according to ISO 9001 standards. These products offer a more stable output which is directly proportional to the force applied to the mechanically-coupled sphere.
The FMA Series is available with pocket tape and reel packaging.
Value to Customers
The FMA Series is designed to meet the customer’s need for a compensated, amplified force sensor that provides digital outputs, a variety of force sensing ranges, a small, cost-effective format, and enhanced durability and accuracy. The flexible design provides multiple standard configurations over a wide operating temperature range.
Differentiation
- Multiple force ranges allow the customer to choose the force range to maximize sensitivity and improve system resolution/performance
- Smaller package allows for space-constrained applications
- Robust design provides enhanced durability in applications where overforce may exist
- Enhanced accuracy includes all errors due to force nonlinearity, force hysteresis, and nonrepeatability
- Reduced Total Error Band enhances system performance
- Digital output enhances performance through reduced conversion requirements and the convenience of direct interface to microprocessors
- Diagnostic functions allow the user to determine if the sensor is working correctly by detecting if electrical paths are broken or shorted inside the sensor
- Selectable supply voltages provide customers with design flexibility
Applications
- Medical
- Infusion pumps
- Ambulatory pumps
- Enteral feeding pumps
- Kidney dialysis machines
- Industrial
- Load and compression sensing
- Touch panels
- Switch replacement
- Robotic equipment
- Weight measurement
- Force/grip measuring equipment
Features
- Small form factor: 5 mm x 5 mm [0.20 in x 0.20 in]
- Accuracy: ±2 %FSS typical
- SPI- or I2C-compatible digital output
- Fully calibrated and temperature compensated over a temperature range of 5°C to 50°C [41°F to 122°F]
- Available in a wide variety of standard and configurable force ranges
- Overforce: 3X force range
- Supply voltage: 3.3 Vdc typ. or 5.0 Vdc typ.
- Low power consumption: 14 mW
- Enhanced part-to-part repeatability
- Enhanced reliability
- Stable, stainless steel sphere interface
- Internal diagnostic functions available
- REACH and RoHS compliant
Click here for a datasheet.
Posted on September 22, 2020 by Jeff -
Has two Hall Effect sensors; one detects the speed and the other detects the direction of movement of gear teeth. The outputs are open collector transistors. The speed output goes high (on) when sensing the leading edge of a tooth and low (off) on the trailing edge of the tooth when run against a standard target. The direction of movement is latched on the leading edge of the speed sensor; the direction output goes high for clockwise rotation and low for counterclockwise rotation. The state of the direction output always leads to the rising edge of the speed output.
Features
- Separate digital outputs for speed and direction
- From near zero speed up to 15 kHz sensing capability
- Plastic flange-mount sensor rated to 125 ⁰C
- RoHS compliant
- IP67
- Typical air gap of 1.5 mm (0.06”)*
Applications
- Wheel speed and direction
- Hoist speed and direction
- Transmission speed and direction
- Industrial feedback and control
Click here for a datasheet.
Posted on September 22, 2020 by Jeff -
Employs a Hall Effect digital vane sensor and a permanent magnet in two small towers, separated by a 3.4 mm (0.135”) air gap. The output switches when a ferrous target passes between the towers. Typical targets are linear or rotary vanes using a square saw tooth or an open slot in a solid disk or band.
Features
- Mechanically interchangeable with typical slotted optical switches
- Robust, high-speed sensing in dirty/dusty environments
- No mechanical contacts to wear out
- Open collector (sinking or NPN) output can be used with bipolar or CMOS logic circuits with a suitable pull-up resistor
- RoHS compliant
Applications
- Door/gate position control
- Exercise equipment
- Printers
Click here for a datasheet.
Posted on September 22, 2020 by Jeff -
Noncontact, intrinsically linear contact angle position sensors with two independent outputs. The sensors operate through the use of Hall Effect technology with magnetic fields generated by permanent magnets. They provide a linear change in voltage output (ratiometric to the input voltage) corresponding to an angular rotation of the input shaft.
Features
- Angular position sensor with high tolerance for misalignment
- Noncontact angular position sensing and full 360° rotation
- Dual independent (redundant) outputs assure high reliability
- Custom programming available for angle range, slope, PWM contact factory
- No mechanical interface means no parts to wear out or jam
- Comes with 18 AWG 305 mm (12”) wire leads
- RoHS Compliant
- IP68*
- Maximum air gap of 5.5 mm (0.22”)
Applications
- Implement (forklift, agricultural trailer hitch, etc.) position sensing
- Steer, throttle by wire
- Gear selection
- Zero-contact encoder alternative
- Replacement for smart bearings
- Outboard trim sensing
Click here for a datasheet.
Posted on September 22, 2020 by Jeff -
Noncontact, intrinsically linear contact angle position sensors. The sensors operate through the use of Hall Effect technology with magnetic fields generated by permanent magnets. They provide a linear change in voltage output (ratiometric to the input voltage) corresponding to an angular rotation of the input shaft.
Features
- Angular position sensor with high tolerance for misalignment
- Noncontact angular position sensing and full 360° rotation
- Custom programming available for angle range, slope, PWM output, and custom magnets – contact factory
- No mechanical interface means no parts to wear out or jam
- Available with Delphi connector or 12” (305 mm) wire leads
- RoHS compliant
- IP67
- Maximum air gap of 5.5 mm (0.22”)
Applications
- Implement (forklift, agricultural trailer hitch, etc.) position sensing
- Steer, throttle by wire
- Gear selection
- Zero-contact encoder alternative
- Replacement for smart bearings
- Outboard trim sensing
Click here for a datasheet.
Posted on March 31, 2020 by Jeff -
MIPS Greater Efficiency In a Wide Range of Environments
The MIP Series offers a heavy-duty, media-isolated pressure transducer in a compact, stainless steel construction for use with a wide range of media including aggressive fluids and water. The MIP Series provides a cost-competitive solution for wide-ranging potential applications in tough environments.
Value to Customers
- Total Error Band (TEB) ±0.75 %FSS (Full Scale Span) from -40°C to 125°C: Provides true measurement performance over the compensated temperature range; small error promotes system uptime and efficiency (see Figure 4).
- EMC performance: Operates reliably in the presence of electromagnetic fields, such as wireless signals, RF communication, and electrical devices.
- Hermetically welded design supports almost any media without the use of an internal seal. The sensors are designed to be used in harsh environments that see aggressive media.
Features
- Rugged, stainless steel construction
- Ratiometric output: 0.5 Vdc to 4.5 Vdc
- Operating temperature: -40°C to 125°C
- Total Error Band up to ±0.75 %FSS (-40°C to 125°C)
- Industry-leading accuracy: ±0.15 %FSS BFSL
- Long-term stability: ±0.25 %FSS
- Radiated immunity: 100 V/m
- High burst pressure: 207 bar [3000 psi]
- Drinking water approval: NSF/ANSI/CAN 61
- CE, RoHS, REACH compliant
- Miswiring protection
- Overvoltage protection ±40 Vdc
Click here for a datasheet.
Posted on October 30, 2019 by Jeff -
We have a wide array of sensor output options such as reed and Hall effect digital output, single- and multipoint reed ladder fluid level measurement, ratio-metric output for rotary angle and linear measurement using Hall effect devices, and speed and direction sensing.
Types of Customization:
- Modifications to existing standard product packages, such as adding connectors or changing wire size or length, as well as offering special reed switch sensitivities, custom lead forming and bending, or modifications to bare reed switches
- Fully new custom sensor package designs and/or circuitry
- Magnetic circuit (actuator magnet and sensor) design for a variety of applications
Engineering Services Offered:
- 3D CAD mechanical design services
- Electronic circuitry design
- Magnetic simulation supports analyzing feasibility of the design options
- 3D mapping of magnetic actuation of the sensor
- Rapid prototyping and quick-turn concept parts including 3D-printed parts
- Prototype units using prototype tooling
- Reliability/Validation testing options
- Fully designed production-capable sensor and tooling
Posted on October 29, 2019 by Jeff -
Take advantage of solid-state magnetic sensing technology with Littelfuse Hall Effect sensors! Our selection of Hall Effect products includes digital, analog, and rotary/angle sensors suitable for a wide variety of applications, including speed and direction sensing. Options for customization are available.
Posted on August 21, 2019 by Jeff -
The NTBT Wireless Bluetooth Pressure Transducer allows users to monitor pressure and temperature remotely 24/7 from anywhere in the world with an internet connection. The NTBT functions with both Apple and Android apps at no additional charge and gives users text/email alerts for high- or low-level alarms. It also features data logging capability with downloadable reports from the Data Portal anytime.
LOW ENERGY CONNECTION MODES:
Normal (used with handheld smart devices):
This mode takes measurements one time per second when connected. When the sensor is not connected, it operates in advertising mode and sends a signal every two seconds, allowing the sensor to conserve battery life.
Watchlist (used with the wireless router):
This mode takes a measurement every 30 seconds, storing the data in the advertising packet. The sensor is running 24/7 and constantly communicating with the wireless router.
- Wide pressure range capability from -14.7 PSI (full vacuum) to 10,000 PSI
- Wetted parts are one piece, 17-4 SS (no internal O-rings or welds), with 316 SS available
- Polycarbonate dome
- 1% and 0.25% accuracies available
- Pressure connections include 1/4 NPT male, 7/16-20 SAE #4, G1/4 male and 7/16-20 UNF female with 45° flare and valve depressor (HVAC market)
- Operating temperature range from -40° to 185°F
- 2 times overpressure standard
- Measures both pressure and temperature
- 24-36 month battery life
- Field-replaceable and suitable for permanent installations
- Powered sensor available
Posted on August 21, 2019 by Jeff -
With its proprietary digital/ASIC technology, the NT25 Series Pressure Transducer features field-proven redundant sensing elements that eliminate the need for solder in resistors or trim pots that can drift over time. The NT25 is an industry first — offering stability and accuracy over a wide temperature range at a lower cost than competitive units. With its optional 4x or 10x overpressure and an optional integrated temperature/pressure digital switch feature, the NT25 is truly unmatched in today’s market.
- 24V digital output for pressure or temperature switch point
- Voltage and current outputs
- Custom pressure ranges and outputs available
- 0.25% accuracy
- ASIC technology with no zero/span potentiometers
- All stainless steel welded housing
- IP-69K-rated seal available (for high-pressure wash down)
- Innovative low current consumption, ideal for custom wireless solutions
- Programmable systems available for OEM/systems integrators for in-house configuring of outputs, ranges, and set points to reduce inventory and lead times
- Calibration certificates available (contact customer service)
Recent Comments