Dave Wilson, Editor, writes:
We see from your search that you're looking for information on the term "4-20mA Signal",
and we have a large number of manufacturers' news releases and technical articles here on Engineeringtalk which will be of interest.
Let me be your guide.
Start with
the news release Weighing system handles 500 tonne silo from
AV Technology Silo-Weigh, which we summarised at the time by saying "Conventional content measurement methods struggle to provide acceptable data for silos as large as the one at Pilkington's Greengate flat glass manufacturing site".
Several months prior to that,
we featured the news release Temperature sensors suit hydraulic lines from
IFM Electronic: "IFM's TA temperature sensors offer an evaluation range of between 0-140C or -10-150C".
In May 2007, we covered the news from Electro-Sensors
concerning its Electro-Guard Hazard Monitoring System
- take a look at System monitors potential hazards
which says: "Electro-Sensors' Electro-Guard Hazard Monitoring System combines shaft speed, belt alignment and bearing temperature measurement".
Take a look also at the news release from IFM Electronic, Pt sensors react quickly,
as well as Detecting corrosion early from Pepperl+Fuchs USA,
and Level transmitter resists corrosion from SensorsOne.
See also:
Scaling improves barometric measurement
(January 2007)
The TSA barometric pressure transmitter has a signal conditioned output scaled from 0.8 to 1.2bar absolute for atmospheric pressure readings
Flush transducers handle high-viscosity fluids
(December 2006)
Flush diaphragm pressure sensors have screw-in style pressure fittings so that they can be installed in locations where space is limited or there is small diameter pipe work
Pressure transmitter is robust and reliable
(November 2006)
Budget pressure sensor with a moderate accuracy is designed for pneumatic automation and hydraulic system applications
Amplifier works with hazardous area display
(November 2006)
Sensor Techniques is introducing the DAS72-EX safe area amplifier, specifically designed for use with the versatile BEKA BA488C ATEX certified hazardous area digital weight display
Oxygen analysers add autocalibration
(August 2006)
Emerson Process Management announces the Rosemount Analytical SPS 4001B, IMPS 4000 and MPS 3000 self triggering autocalibration systems for in-situ oxygen (O2) analysers
Precision pressure sensors suit materials testing
(July 2006)
Gefran TPS and TPSA precision pressure sensors are ideally suited to high-pressure materials testing applications such as concrete or soil compression testing
CVC aids flow controller valve
(April 2006)
Fully electronic volumetric flow controller uses constant volumetric control technology to operate independently of any changes in pressure or temperature, maintaining flow to 1% of full scale range
Recorders calculate mean kinetic temperature
(March 2006)
Once pharmaceutical products have been manufactured, and prior to their despatch, they need to be stored within a carefully controlled storage environment
Simple and affordable dew point measurement
(November 2005)
Michell Instruments has developed a low cost, rugged dew point transmitter for continuous measurement of compressed air or process gas
Load cells improve plant efficiency
(November 2005)
The CTUS Series load cells with vessel mounting supports from Applied Measurements has improved the quality and efficiency of a complete soft drinks manufacturing plant
Variable area flowmeter provides best combination
(October 2005)
Krohne's H250 variable area flowmeters are providing a cost effective solution to processing rape seed oil at Thywissen Company, a specialist food manufacturer based in Germany
Pressure transmitter handles all media
(August 2005)
The Model 517 is an all media submersible pressure transmitter designed to provide accurate performance and readings from 30in to 1200ft of liquid
Convertor turns frequency to current
(June 2005)
A novel signal convertor is extremely useful for converting a flowmeter frequency output into an industry standard 4-20mA current output
Flow meter and manifold aid easy upgrades
(May 2005)
A new flow meter and manifold system is designed to replace older, outdated mechanical flow meters in paint mix rooms
Isolating repeater is intrinsically safe
(April 2005)
A new intrinsically safe isolating repeater from R Stahl Schaltgeraete provides EX-safe electrical isolation between two earthed circuits
Convertor promises low-cost signal processing
(April 2005)
The SY027 signal convertor offers low-cost signal processing and is useful for many industrial manufacturing applications
Corrosion detectors approved for hazardous areas
(April 2005)
CorrTran corrosion detection transmitters from Pepperl+Fuchs are now available with approval for use in intrinsically safe (IS) applications
Temperature transmitters simplify programming
(March 2005)
Simplified programming and the ability to be retrofitted in to any existing temperature head are two of the benefits offered by ABB's new TH01 head-mounted temperature transmitters
Modules aid process measurement and control
(January 2005)
Mettler Toledo has launched two new products for process measurement and control - the IND110 and A100
Weighing system gets to grips with soda ash
(January 2005)
The Silo-Weigh system has successfully completed a six month trial on a huge 30m-high, 500t soda ash silo at Pilkington's Greengate flat glass manufacturing site at St Helens, Lancashire
Transmitter detects corrosion in hazardous areas
(December 2004)
Pepperl+Fuchs' innovative CorrTran corrosion detection transmitters are now available to satisfy Class I, Division 2 hazardous location applications
Flow transmitter features advanced sensors
(October 2004)
The DVF-320 depth velocity flow transmitter uses a 4-20mA signal to provide long-term monitoring and transmission of flow rate
Long-stemmed meters measure tank contents
(September 2004)
A new series of long-stemmed vibrating fork density and viscosity meters is ideal for top-mounted, direct-insertion into storage, mixing and process tanks
Displacement sensor suits clamp position feedback
(July 2004)
Balluff has added a new 160mm stroke length to its BIL range of miniature noncontact displacement sensors
Selecting the correct radar level transmitter
(February 2004)
Awareness of the exact process parameters can save money when specifying radar level transmitters, says Kevin Martyn
Eddy current probe driver has direct PLC interface
(November 2003)
Monitran's latest MTN/ECPD-2 series driver for use with its range of inductive eddy current proximity probes has a two-wire 4-20mA output which will interface directly with PLCs
Trip amplifiers are smaller and cheaper
(October 2003)
Two new DIN-rail mounted trip amplifiers feature a size and cost claimed to improve on anything else currently available
Versatile amplifier for Pt temperature sensors
(September 2003)
In a single, easy-to-use unit, the versatile new TR2 measuring amplifier meets the needs of virtually all common temperature sensing applications which use platinum temperature sensors
Intrinsic safety engineering in the fieldbus era
(September 2003)
The IS-1 remote I/O system embodies an intrinsically safe system concept specifically developed for use with fieldbus systems
Easy setup for loop-powered controllers
(July 2003)
A new family of 4-20mA activated solid-state contactors accept the industry-standard 4-20mA signal and convert it into a high-speed, time-proportional output
Three-in-one unit saves on flow measurement
(July 2003)
BKW Instruments of Manchester has sold Mass ProBar flow measurement systems for installation on the United Utilities Davyhulme Wastewater Treatment Works
Frequency current convertor goes underground
(June 2003)
i.Power Solutions is now offering a competitive choice in current convertor technology with the development of a new frequency current convertor for underground applications
Budget price for four-channel thermocouple amp
(May 2003)
The TCA-4 is a budget-priced four-channel thermocouple amplifier unit
Flowmeter keeps close check of engine inlets
(March 2003)
Labcell has a new air intake flowmeter for internal combustion engines that the company believes is the lightest, most compact and the most accurate instrument of its type