Product category:
Monitoring and sensor equipment and systems
News Release from: SensorsOne | Subject: Level data loggers
Edited by the Manufacturingtalk Editorial
Team on 23 February 2007
Fluid level data logging in aggressive
liquids
Level Troll 500 water level data loggers are compatible with brackish, tidal or sea-water and feature outer casings made from Titanium with excellent long term protection against corrosion.
Prolonged immersion in saline liquids will lead to irreparable damage to pressure measurement instrumentation if the sensor housing is not made from a corrosion resistant material that is suitable for long term submersion in corrosive fluids such as sea-water Although many materials will last a long time in salt-water because the erosion rates are very low; when a thin piece of material such as a pressure transducer diaphragm is exposed to a corrosive media even a low erosion level will lead to a short operating life
This article was originally published on Manufacturingtalk on 29 May 2006 at 8.00am (UK)
Related stories
Automatic zero for pressure transmitters
Sensorsone is launching the new digital autozero and span option for the Gefran TK Industrial Pressure Transmitter and the TPSA Precision Pressure Transmitter.
Low differential pressure transducer, transmitter
Sensorsone is adding the Ashdown Control DRS Low Differential Pressure Transducer and Transmitter for use with Wet and Dirty Gases to its pressure sensor range.
A typical material used for manufacturing pressure sensor diaphragms is stainless steel but most grades apart from Duplex stainless steel do not offer adequate corrosion protection to maintain the integrity of thin diaphragms over a long period of time.
Therefore other metals such as Hastelloy C276 and Titanium alloy which are very resilient to saltwater corrosion are used instead.
The Level Troll 500 water level data logger is compatible with brackish, tidal or sea-water.
Further reading
Industrial pressure transmitters are in stock
Universal industrial pressure transmitters have DIN plug electrical connection, G1/4 B pressure connection, 0.5% full scale accuracy, 4-20mA current or 0-5V signal output.
Pressure transmitters get plug-in display
A TDP Loop powered plug-in display for pressure transmitters has an easily readable four digit LED display which can be configured to read in any pressure units and will trigger alarms.
The level loggers outer casing is made from Titanium which has excellent long term protection against corrosion particularly with saline liquids.
The Level-Troll 500 Titanium level logger relies on a silicon piezo-resistive sensing element for measuring the hydrostatic pressure which is contained within an oil filled capsule which has a thin Titanium isolation membrane.
The small cross sectional area of the silicon chip allows an 18.3mm diameter Titanium capsule to be used in the loggers construction so that the LevelTroll 500 water logger can measure the water level in narrow boreholes for geotechnical surveys of groundwater.
The Level-Troll500 liquid level logger combines a Titanium pressure transducer with an accuracy of +/-0.05% FS, a battery with a life of 5 years and a data logging memory of 1MB into one compact submersible level measurement package which can be lowered into position without any need for any electrical connection to the surface if necessary.
For gauge referenced level measurements the Level Troll 500 water level logger has a vented cable which is supplied with desiccant caps to prevent moisture entering into the electronics.
Alternatively an absolute reference pressure sensor can be specified eliminating any need for a vented cable.
A number of installations measuring absolute pressure can be compensated for changing atmospheric pressures by including one BaroTroll barometric pressure data logger at each location.
The software supplied with the LevelTroll500 will automatically synchronise the level measurements with the corresponding atmospheric pressure measurements to record the true liquid level.
The LevelTroll500 water logger can also record the liquid temperature simultaneously with the level readings.
• SensorsOne: contact details and other news
• Email this article to a colleague
• Register for the free Manufacturingtalk email newsletter
• Manufacturingtalk Home Page
