Instrumentation specialist Impress Sensors & Systems Ltd has launched two new marine-approved sensors for level and pressure measurement of storage and ballast tanks. Both sensors are approved by DNV and Germanischer Lloyd.

The new LMK 458 is a hydrostatic probe with ceramic (Al2O3) diaphragm that is suitable for level measurement in marine storage/ballast tanks and draught monitoring, as well as applications in the water industry such as desalinization plants and drinking water filtration.

The probe uses a capacitive ceramic sensor element that provides a high resistance to overpressures. The transmitter is protected to IP68 and provides good resistance to chemicals and high long-term stability.

Marine Approved Pressure Transmitters

An optional intrinsically safe (IS) version of the LMK 458 is also available. This version is ideal for measuring the pressure of various fluids in harsh marine environments, including Zone 0 ATEX areas. Other options include different housing materials, either stainless steel as standard or a Cupro-Nickel (CuNiFe) sea water-resistant version. Other options include screw-in or flange-mounted versions, as well as other accessories such as probe flanges and mounting clamps.

The LMK 458 has a diameter of just 39.5mm and is able to operate in temperatures from -25 deg C to +125 deg C. The sensor is accurate to 0.25% FSO (to IEC 60770). Nominal pressure ranges are from 0-40 cmH2O, up to 0-200 mH20.

In addition to the LMK 458, Impress Sensors has also launched a marine-approved pressure transmitter. The DMK 458 is a pressure transmitter with ceramic diaphragm that is suitable for monitoring pressures in a variety of marine and offshore applications, including loading and unloading systems, level measurement in ballast and storage tanks, draught monitoring, and anti-heeling systems used on ferries and cargo ships, which prevent heeling of the ship during loading and unloading.

The DMK 458 offers high overload pressures, excellent accuracy and high temperature resistance. The transmitter is available in nominal pressure ranges from 0-40mbar up to 0-20bar. As well as threaded versions, the transmitter is also available in various flush mounted versions, which are ideal for measuring pressures of viscous, pasty and polluted media.

The DMK 458 can operate in temperatures from -40 deg C up to +125 deg C. The sensor is accurate to 0.25% FSO to IEC 60770. An optional IS-version for Zone 0 applications is also available.

For more information on the LMK 458 or DMK 458 pressure transmitters, please visit the website at www.impress-sensors.co.uk or call the sales team on 0118 981 7980.

Marine-Approved Level and Pressure Sensors now available from Impress is a post from: Impress Sensors

XACT i Process Pressure Transmitter, ATEX & HART

technology combined with a digital microprocessor for compensation and calibration.  Together the result is a highly stable and accurate to <±0.05% pressure transmitter suitable for processing, pharmaceutical, food and dairy applications.

Pressure ranges are from 350mbar through to 35 Bar in Gauge or Absolute reference with 5:1 turn down of range as standard and still maintains the stated accuracy levels.  This is useful for customers to stock certain ranges and calibrate them for different applications when required so as to reduce the number of devices held on the shelf!

The Innovative housing on the top of the device which incorporates the LCD display is integrated to the pressure sensor module via an I2C interface.  The build procedure of the XACT i ensures that the device is not only accurate but has highly stability and repeatable performance.  By ordering the integrated temperature cooling element we can use the pressure transmitter in applications where the process temperature is as high as 300°C!!

The display on the device is a clear 3 stage LCD of 32.5 x 22.5mm which indicates the pressure, current, temperature and also has a text line at the bottom for easy programming.  The device can be programmed, on-site via the display and push buttons on the front of the device (accessed when the laminated safety glass is removed).  The parameters that can be adjusted are:

1. Offset
2. Calibration range
3. Damping
4. Engineering units
5. Display function
6. Password

As standard the display can be configured to show the current pressure, temperature of the media, current output and engineering units being displayed.  Other interesting and useful features include the ability to see the maximum and minimum process pressures and temperatures which is particularly useful when a plant event has occured and no data logging is used.  The device can then hold and display the maximum/minimum pressure and temperature during this time and be used to check the process operation.

We also have the option of having ATEX certified to zone 0: II 1 G EEx ia IIC T4.   The device can be manufactured to incorporate HART® Communication and for additional cost software and a HART® configurator can be supplied also.

Product Datasheet: XACT i Process Pressure Transmitter

Product Page: Process Pressure Transmitter Page

If you have any applications you wish to discuss or any questions questions regarding this product then please contact sales here sales@impress-sensors.co.uk

XACT i Process Pressure Transmitter with ATEX & HART Communication! is a post from: Impress Sensors