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January 15th, 2012
New differential pressure transmitter for gas and compressed air applications
A new range of compact, lightweight differential pressure transmitters for gas and compressed air applications is now available in the UK from Impress Sensors & Systems Ltd.
The DPS 200 range of differential pressure transmitters is designed to operate with any gas or compressed air and so is ideally suited to Buildings Management Systems, including HVAC (Heating, Ventilation and Air Conditioning) systems, low differential pressure measurement applications and industrial clean rooms.
The DPS 200 comprises a piezoresistive pressure sensor and an optional integrated LC display. The unit is available in 14 nominal pressure ranges (differential and gauge) from 1 mbar up to 1,000 mbar. The 5-digit, 7-segment LC display has a digit size of 8mm and a visible range of 32.5mm by 22.5mm.
 DPS 200 Low range differential pressure transmitter Sam Drury, Sales & Marketing Director at Impress Sensors & Systems Ltd comments: “The DPS 200 is very competitively priced compared to alternatives that are currently available on the market. The units can be fitted anywhere along a pipeline or within a control cabinet or panel. The unit is protected by a rugged ABS housing to IP54 and is both compact and lightweight.”
The DPS 200 operates at a high measuring rate of 1kHz, with a response time that is adjustable by using a potentiometer in the range 50ms up to 2.5s. 3-wire current or voltage outputs are available.
As Drury states: “Being able to adjust the response time is particularly useful if the user needs to eliminate any false triggering in the system. For example, if a filter somewhere in the system becomes blocked over time and the transmitter normally operates at a nominal differential pressure of 50mbar. This differential will increase progressively over time due to the filter blockage, which can cause chatter. By dampening the response time of the transmitter, false triggering within the system can be prevented.”
The DPS 200 is temperature-compensated in the range 0 deg C up to 50 deg C. The unit also provides all the required electrical protection, including short-circuit protection, reverse polarity and electromagnetic protection according to EN 61326.
For more information on the DPS 200 digital pressure transmitters, please call the sales department on 0118 981 7980 or visit the website at www.impress-sensors.co.uk
Posted in Differential Pressure Sensor, Differential Pressure Transmitter, Pressure Transmitter with Display | No Comments »
January 13th, 2012
New high pressure stainless steel differential pressure transmitters offer three-in-one capability
Instrumentation specialist Impress Sensors & Systems Ltd has launched a new range of high pressure (up to 70 bar), mechanically robust differential pressure transmitters for liquids and gases. The transmitters provide three-in-one capability, including an adjustable 4-digit LED display, a pressure transmitter and two PNP pressure switch connections.
The new DMD 831 is a stainless steel differential pressure transmitter for industrial use that incorporates two piezoresistive stainless steel sensors and stainless steel diaphragms. The transmitter is therefore suitable for a wide range of plant and process engineering applications, including HVAC, energy and laboratory applications.
 DMD 831 - Differential pressure transmitter with display and contact for liquids and gases Differential pressure sensors and transmitters measure the difference in pressure from one side of a diaphragm to the other or between two diaphragms. When pressure is applied, the DMD 831 determines the pressure difference between positive and negative sides and transforms this into a proportional electrical signal. Typically, this enables the measurement of pressure drop across a filter due to build up or blockages, or for measuring flow and level via a pressurised vessel.
The DMD 831 is a cost effective, compact solution for OEMs and end users across a diverse range of process control applications, including pressure control for lubrication systems, hydraulics and pneumatics, air compressors, steam, water, fuels and oils.
Sam Drury, Sales & Marketing Director at Impress Sensors & Systems Ltd comments: “The robust, compact design of the DMD 831 allows it to be integrated in a diverse range of process engineering and machinery applications, particularly where the installation space is restricted. The sensors also provide a turn down capability of 10 to 1.”
Seven different versions of the DMD 831 are available, with differential pressures from 0… 80 mbar up to 0… 70 bar. The transmitters operate in media temperatures from -40 deg C to +125 deg C. Switching accuracy is +/- 0.5% FSO according to IEC 60770. The transmitters are ingress protected to IP65.
For more information on the DMD 831 range of differential pressure switches, please visit the website at www.impress-sensors.co.uk or call the sales team on 0118 981 7980.
Posted in Differential Pressure Sensor, Differential Pressure Transmitter, Pressure Transmitter with Display, Programmable Pressure Transmitter | No Comments »
January 8th, 2012
Compact digital pressure gauges offer exceptional price/performance ratio
A range of low cost, battery-powered digital pressure gauges has been launched, which offers customers a direct, cost effective replacement for their existing, less accurate mechanical gauges.
The DM 10 range of battery-powered digital pressure gauges is available through Impress Sensors & Systems Ltd, a sensor and instrumentation specialist. The gauges are targeted at a wide range of applications, including hydraulics & pneumatics, process engineering, R&D/laboratory work, and mobile pressure monitoring, including mobile construction vehicles, tractors, pumps, compressors and filters. The gauges have a ceramic diaphragm and so are also suitable for environments in which aggressive chemicals are present.
 DM 10 Low cost digital pressure gauge Sam Drury, Sales & Marketing Director at Impress Sensors & Systems commented: “The DM 10 is a cost effective direct replacement for most mechanical pressure gauges. It has a 63mm diameter display, the same as common mechanical gauges, but the DM 10 offers higher accuracy, repeatability and reliability.”
The DM 10 is designed to be mounted easily and quickly in-situ. The 4.5 digit, 7-segment LC display can be rotated independently of the housing, providing the engineer with clear sight of the display at all times, regardless of the mounting configuration. The housing itself rotates 270 degrees about the horizontal axis.
The device is operated through a simple, menu-driven display via push buttons on a touchpad. As well as showing information about the nominal pressure range, the unit can display via the menu the maximum and minimum pressures of a process. “For example, an engineer may have a fault in the system and therefore needs to check what the maximum pressure reading on the gauge was. An increase in the system pressure from say 6 bar up to 10.5 bar may indicate an over-pressure problem within the process and this would be displayed on the gauge,” Drury added.
Users can also choose which units of measurement they prefer, including bar, mbar, psi, mH2O and MPa. Additional functions include auto-zero and an automatic switch-off, where the user can define between 1 and 5 minutes or select continuous operation.
Nominal pressure ranges for the DM 10 are from 1.6 bar up to 250 bar. Minimum operational life of the battery is 1,500 hours.
For more information on the DM 10 range of battery-powered digital pressure gauges, please call the sales department on 0118 981 7980 or visit the website at www.impress-sensors.co.uk
Posted in Pressure Displays, Pressure Gauge, Pressure Transmitter with Display | No Comments »
April 29th, 2010
Pressure transmitters are commonly used for industrial applications where detecting pressure is very important. The main function of pressure sensors is to translate the low level electrical outputs to higher level signals. These signals are appropriate for processing and transmission. The latest technology used in pressure transmitters allows them to measure the pressure of several gases and liquids.
Various pressure measurements performed by pressure transmitters
One of the best things about pressure transmitters is that they can easily display several pressure measurements. Absolute pressure is a measurement which is relative to the perfect vacuum. Gauge pressure is one of the common types of measurement, which is directly relative to the local atmospheric pressure. There is also sealed gauged measurement which is relative to sea level’s atmospheric pressure. Lastly, there are differential pressure measurements that help in measuring the difference between distinct pressures.
Pressure transmitters display different units and values
The latest compound pressure transmitters can easily display negative, as well as positive pressures. At present, you will find pressure transmitters which can display the pressure values in bars, millibars, pounds per square inch, centimeters or inches of mercury, kilo pascals, feet or inches of water, and the list goes on.
A few advanced pressure transmitters have temperature compensation which offers temperature measurement and additional pressure outputs. More advanced pressure transmitters include visual alarms, built-in audio alerts and an output switch.
Take into account all the choices above and buy the pressure transmitters which suit your industrial requirements best.
Posted in Pressure Transmitter with Display | No Comments »
August 18th, 2009
 DS Series Combined pressure transmitter, pressure switch and pressure display The DS range of pressure transmitter, switch and display combination is a three-in-one multi-function pressure sensor with signal conditioning which gives a current or voltage output signal, 1, 2 or 4 x independent PNP transistor switch outputs and a freely scalable and programmable led rotatable display! The potential for this device is a complete control system in a single device, cutting installation and equipment costs and configuration to your exact control requirements.
With pressure ranges spanning from 10mbar on the DS 210 through to 600 bar on the DS 200 within the DS series we should be able to cover all requirements on air pressure measurement and liquid pressure sensing alike. The DS range will cover your requirements for an air pressure transmitter, oil pressure transmitter, hydraulic pressure transmitter and also if it’s just a simple pressure switch that you require then this device will solve that requirement also.
There are several options available within the range including:
- ATEX certification
- 1, 2 or 4 switch points
- analogue output in either 4-20mA, voltage or none!
- electrical connection
- process connection type
There’s also the option for a 3-wire 4-20mA configuration which allows for re-calibration of the 4-20mA output signal, not only is the display scalable, the output is also!
The digital LED display on the device is freely rotatable through 2-axis so you will always be able to see the display clearly. If installed on a vertical pipe horizontally then simply rotate the display through the body until it is face on and then rotate it on the display part so the readings are horizontal. The brightness is also adjustable depending on the environment you are installing to.
The DS 210 – Air pressure sensor switch
Suitable for air pressure and non aggressive gases, the start of measurement is from as low as 10mbar through to 1000mbar Gauge reference only. Vacuum pressure ranges also available.
The DS 201 – Ceramic pressure sensor switch and display
Suitable for Gases and Liquids from pressure ranges from 600mbar through to 600 bar Gauge or Absolute reference making this suitable for gauge pressure sensor, absolute pressure sensor requirements and absolute pressure switch applications also.
The DS 200 – Stainless steel pressure sensor switch and display
Suitable for Gases and Liquids compatible with the stainless steel media isolated diaphragm. Pressure ranges from 100mbar through to 600 bar Gauge or Absolute reference, being based on a silicon pressure sensor with stainless steel diaphragm the over pressure capability is inherently higher and also the resolution is higher than the DS 201 with the ceramic pressure sensor.
The DS 230 – OEM Digital pressure switch with display
Suitable for Gases and Liquids compatible with the ceramic diaphragm and FKM internal O-ring seal. Pressure ranges from 2 bar through to 400 bar Gauge reference only. This is a lower cost version with less accuracy and no transmission of output, just purely a pressure switch and pressure display device targeted at OEM applications.
The DS series pressure transmitters, switches and display products are very diverse in their capabilities as a control device, please contact sales for a discussion on to how best implement the pressure product into your application.
Product Datasheet: ME501/505 datasheet, ME651/662 datasheet
Product Page: Ceramic pressure sensor products 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
Product Datasheet: DS 210, DS 201, DS 200, DS230
Product Page: Combined Pressure Transmitter, Pressure Switch and Display products 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
Tags: Adjustable Pressure Switch, ATEX Pressure Switch, Digital Display, Digital Pressure Gauge, Pressure Switch, Pressure Transmitter, Programmable Pressure Transmitter
Posted in Digital Indicator, Low range pressure transmitter, Pressure Displays, Pressure Gauge, Pressure Switch, Pressure Transmitter with Display | No Comments »
July 11th, 2009
 XMD Smart differential pressure transmitter The SMART differential pressure transmitter, XMD has been designed and developed for applications in the process industry, it has various possible applications such as level measurement of closed, pressurized tanks, pump and filter control, closed pipe flow measurement in conjunction with orifice plate, venturi or a nozzle. It’s especially suited to the flow application due to the ability to switch the output from a standard linear output to a square root extraction where flow rate can be output.
The XMD has a differential pressure range from 75mbar through to 2 bar and with a static over pressure capable of 130 bar line pressures. The calibrated pressure range can also be turned down to 10:1 times so for example a 75mbar range can give a fullscale output at 7.5mbar and still maintain the 130 bar line pressure!
The outputs available are 4-20mA as standard with the option of having HART® communication. If this option is selected then ATEX approval comes as standard. There are two possibilities for ATEX approval:
- Intrinsically Safe for Zone 0/1: II 1/2 G Ex ia IIC T4
- Flameproff enclosure for Zone 1: II 2 G Ex d IIC T5
The construction is rugged and designed for harsh environments, the electrical enclosure is aluminium die cast, powder coated and has teh option of integrating a smart display which makes programming of the following parameters easy: electronic damping of signal, offset adjustment up to 90% of FS and turndown of span 10:1 times. The housing is a two chamber aluminium die cast case and is prepared for fitting of chemical seals to extend the application possibilities. Applications for the XMD Smart differential pressure transmitter include:
- Petrochemical
- Pharmaceutical
- Chemical
- Energy and Power
- Food and dairy
- Paper & pulp industry
The optional display of the XMD is LCD with a visible range of 32.5 x 22.5 mm, the main display is 5-digit 7 segment with a height of 8mm whilst the secondary line is 8-digit 14 segment with a high of 5mm used for textual indication. There is also a 1mm high 52 segment bar graph which runs along the bottom for clear and easy interpretation of the output from the device. The whole device is rated to IP67 even with the display option!
Product Datasheet: XMD Smart differential 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
Tags: Differential Pressure Sensor, Differential Pressure Transmitter, Pressure Transmitter, Process Pressure Transmitter, Programmable Pressure Transmitter
Posted in Differential Pressure Sensor, Differential Pressure Transmitter, Pressure Transmitter with Display, Process Pressure Transmitter, Programmable Pressure Transmitter | 4 Comments »
July 8th, 2009
The unique Process Pressure Transmitter XACT i, incorporates the latest in piezo-resistive silicon sensing
 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:
- Offset
- Calibration range
- Damping
- Engineering units
- Display function
- 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
Tags: Flush Pressure Transmitter, Pressure Transmitter, Process Pressure Transmitter, Programmable Pressure Transmitter
Posted in Flush Pressure Transmitter, Pressure Transmitter with Display, Pressure Transmitters, Process Pressure Transmitter, Programmable Pressure Transmitter | 2 Comments »
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