Multi-range air differential pressure transmitter (4 pages)
Summary of Contents for Sontay LS-MC
Page 1
The 4-20mA output represents the distance between the surface of the liquid being detected and the sensor. The LS-MC has an integral LCD display, 3 push buttons under the lid for security, and just 8 parameters to set making it one of the simplest ultrasonic level transmitters to calibrate and use.
Shield the LS-MC from direct sunlight. If used with a liquid where foaming could occur, locate the LS-MC over an area of clear liquid. Failure to comply will result in a reduced size of the return echo, thus an incorrect reading.
Power Up On power up, the LS-MC will take a few seconds to initialise, then the display will run through a set-up routine, showing a full set of figure eight’s, then the software revision and finally a full set of zeros whilst the microprocessor identifies the correct return echo and confirms this repeats enough to be acceptable.
LS-MC display is in distance mode. You can now quickly check correct operation against a manual measurement if required. Tip: A feature of the LS-MC useful at this stage is that it can be used as an electronic tape measure. With an empty tank or vessel, the LS-MC will read the distance to the bottom of the tank.
Page 6
The 4mA level may be set above or below the 20mA level to suit the monitoring or control equipment. If you wish to set the 4 and 20mA levels by ranging the LS-MC to a fixed target, such as the level in the tank at any particular time, skip ...
Page 7
Selecting the output current output on alarm condition: The LS-MC will signal an alarm condition in the event that the target echo is lost for a period of 10s or more. The user can select what action the current output will take in this case.
Page 8
To store a new false echo, press the blue button for greater than 5s. Note : If there are already 2 false echoes stored (Lrn2) then the LS-MC will not allow the user to store another echo until the memory is cleared.
Page 9
Power Failure: All parameters are held in E² PROM memory, so in the event of a power failure or disconnection from the power supply the LS-MC will remember all of its last parameter values and will resume correct operation once power is restored.
Whilst every effort has been made to ensure the accuracy of this specification, Sontay cannot accept responsibility for damage, injury, loss or expense from errors or omissions. In the interest of technical improvement, this specification may be altered without notice.
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