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DPT – Differential Pressure Transmitter for low pressures
The DPT differential pressure transmitter is used for detecting over- and under-pressure and differential pressure. The DPT is suitable for air and non-aggressive gases. Typical applications are monitoring and control of ventilation and air-conditioning, fans and filters.
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The Series 251 wet/wet differential pressure transmitter utilizes a double diaphragm sensor technology that outperforms standard double sensor products in accuracy, reliability and static operating pressure. This differential pressure sensing technology offers 0.25% accuracy with static operating pressures up to 1000 PSI. The Series 251 features 316 stainless steel construction designed to meet NEMA 4X (IP 65) standards. The transmitter also offers exceptional field flexibi ity with a 5:1 turn down and comes standard with a certificate of calibration.
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The Series 211 Differential Pressure Transmitter can accurately measure positive, negative, or differential pressure and send the corresponding 4-20 mA output signal. The Series 211 Differential Pressure Transmitter is not position sensitive and can be mounted in any orientation without compromising accuracy. It also features a power LED, so you always know when the transmitter is operating. The compact, lightweight design makes installation simple and easy.
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With the VEGADIF an effective system for the measurement of differential pressure, level and flow is available.
The instruments are suitable for differential pressure as well as positive and negative gauge pressure.
VEGADIF is the ideal solution for all types of applications in many industries:
- in process control industries
- in chemical industries
- in pollution control.
The measured products can be gaseous, steamy, liquid or even highly viscous.
Product and process wetted materials and construction types ensure reliable use even in aggressive or abrasive products as well as in applications with high hygienic requirements e.g. in the food processing and pharmaceutical industries.
User features
- Spans from 1 mbar to 40 bar
- Nominal pressure up to 420 bar
- Accuracy better than 0,1 %
- Longterm stability better than 0,1 %/12 months
- highly overload resistance silicium sensors
- Continuous self-monitoring
- Quick set-up and easy operation
- Unpressurized adjustment (dry adjustment)
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P 26
Intelligent differential pressure transducer
with scalable measurement range.
Sensitive measurement technology in innovative housing
Demands for increased quality in nearly every area of industry have subjected pressure gauges to sophisticated demands as well. These include clean room monitoring and the ability to monitor sterile environments in the packaging machines used in products for such industries as foods and pharmaceuticals. The new P 26 differential pressure transducer from halstrup-walcher has been specially designed to meet these demands.
The P 26 is a differential pressure transducer that meets these particularly sophisticated demands. Measurement ranges between 100 Pa and 100 kPa are freely scalable from 10 to 100%, and provide the option of switching to other units of measurement like mmH2O, mmHg, etc. Cyclical self-calibration of the zero point ensures a high level of measurement stability. Two cutoff points are available that can be set freely along the entire measurement range; these allow the user to connect visual or audible alarms that would be triggered any time values fall above or below limits. All measurement values can be clearly read on an optional graphic LCD. The instrument can, if necessary, communicate with a master control unit via an RS 232 interface and can be mounted either on a wall or on top-hat rails.
A hand-held unit can be used as a configurator for the one-time calibration when using more than one of the affordable P 26 pressure transducer without a display.
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Measuring range : from 0/+10 Pa to -10 000/+10 000 Pa
Configurable intermediary and central zero ranges
Air velocity and airflow functions
Interchangeable measuring sensor (SPI technology)
Simultaneous display of 1 to 4 parameters
External transmitter unputs (KIMO class 200 and 300) and thermocouple K
2 output 4-20 mA or 0-10 V (4 wires), RS 232, 2 RCR relays 6A/230 Vac
2 visual (dual color LED) and audible (buzzer) alarms
Software, keypad or remote control configuration
MODBUS network RS 485 system (optional)
ABS or ALU IP 65 housing, with or without backlit gaphic display
Mounting with the 1/4 turn system with wall-mount plate
CP301 : -100/+100 Pa (resolution : 0.1 Pa)
CP302 : -500/+500 Pa
CP303 : -1000/+1000 mbar
CP304 : -10 000/+10 000 mbar
• Barbed fittings Ø 5,2 mm
• Unit of measurement : Pa, mmH2O, mbar, inWG, mmHG
• Power supply : 24 Vac /Vdc, 115 Vac or 230 Vac
• Outputs : 2 x 4-20 mA or 2 x 0-10 V
• Functions : pressure, air velocity, airflow with Pitot tubes, Debimo and other coefficients, integration of measure, self-calibration, measuring correction factor, temperature compensation : manual or automatic (thermocouple K input).
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ComfortSense
Thermal comfort measurement according to EN 13182, ISO 7736 and ASHRAE standard 113
Dantec Dynamics’ ComfortSense system is designed for research and development of heating and air conditioning systems requiring multi-point measurements of air velocity and temperature. Draught measurements require omnidirectional sensors with a frequency response of at least 2 Hz, which is fulfilled by the present system.
ComfortSense elements
The ComfortSense system consists of a main frame with anemometer circuits for up to 16 probes. The omnidirectional probes measure both air velocity and temperature. Six frames can be connected so that up to 96 probes can be monitored simultaneously. The ComfortSense main frame has a built-in A/D converter with USB 2.0 interface.
Easy-to-use
It is easy for the user to setup a measurement sequence and make a measurement grid with selection of probes from a user library. The software delivers statistical results based on user-defined measurement cycles. The ruggedly designed probes and cables are perfectly suited for large test rooms.
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Applications:
- Mobile hydraulics
- Machine building
- Automotive industry
Special Features:
- Shock and vibration tight according IEC 60068-2
- Ingress protection 67 until IP 69K (steam-jet safe)
- Wetted parts out of stainless steel
- Automated production according ISO/TS 16 949
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PS series pressure switch is a more advanced miniature pressure switch in the world. It’s one of the electrical switches that control the circuit open or close on pressure of the controlled medium increase or decrease. It’s used widely in refrigeration system, oil pump, air pump, automobile industries and others.
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Applications:
- Hydraulics / Pneumatics
- Automation engineering
- General industrial applications
Special Features:
- Measuring rate up to 1 kHz
- Compact size
- Design with integrated Y-connector
- Version with internal DIP-switches for bus configuration
- Configuration software EasyCom CANopen
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VEGABAR series 50/40/10 pressure transmitters are developed for process pressure measurements of liquids and gases.
Application-optimised housings and materials ensure the universal use even under arduous conditions. In addition, VEGABAR series 50 pressure transmitters offer a maximum of adjustment and indication comfort. VEGABAR 42 pressure transmitters are suitable for more easy process pressure measurements. Easy adjustment, terminal connection and optional display characterise this instrument. VEGABAR 14 and VEGABAR 17 pressure transmitters are the completion for all standard applications. Depending on the application, you can choose between intrinsically safe, highly overload resistant and flush instruments or versions for high pressure measuring ranges.
Advantages
- High accuracy
- No influence by installations
Applications
- Level and pressure measurement of liquids and gases
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Turn Down:
The UniTrans enables with its maximal 1 : 20 Turn down an adaption to applications also at great changes of the measuring range (e.g. a 100 bar transmitter can be turned down to 5 bar).
As IS - pressure transmitter the UniTrans can perfectly meet the hardest requirements of industrial pressure measurement.
Configuration:
With the easy-to-use menu, the user can set parameters such as language, unit, zero point, span or inverted signal. The UniTrans also offers the possibility of a tank linearisation with up to 32 holding points.
Multifunctional display:
The optional display can be adjusted mechanically and electronically, thus guaranteeing many display variations and an optimal reading from different directions. Bargraph and trend are permanently displayed. Only a minor modification of the case is required in order to be able to read the display from above. All standard units can be displayed. Two further lines are available for entering additional text (e.g. min./max. values or temperature at the sensor).
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Fully PVDF Pressure Transmitter TPR-21
The enclosure is IP65 protection and the process connection is 1/2" G. The ceramic thick film sensor provides high accuracy of 0.5% FSO in ranges from 0…0.1 Bar up to 0...400 Bar, and 4-20mA output signal 2-wire by DIN connector. It is fully recommended for pressure measurement in very aggressive media or for applications where the sensor fill fluid is not allowed (i.e. Oxygen)
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New! The Vaisala Combined Pressure, Humidity and Temperature Transmitter PTU300
Vaisala introduces a new generation barometric pressure, relative humidity and temperature transmitter series, the Vaisala Combined Pressure, Humidity and Temperature Transmitter PTU300. The PTU300 features fully digital measuring electronics for all three parameters, several small RH&T sensor heads for different applications, and calculated humidity variables. The new backlit display shows three-hour graphical trends and up to one year of historical data. The recorded measurement data can be viewed on the display or transferred to a PC. Seven languages options are also available.
The PTU has four different probe options: PTU301 for laboratories, PTU303 for outdoor use, the warmed PTU307 probe for demanding meteorology, and the PTU30T for pressure and temperature measurement only.
The Vaisala BAROCAP® sensor is used for pressure measurement and the Vaisala HUMICAP® sensor measures humidity. Both sensors are known for their high accuracy and long-term stability. The temperature sensor is a platinum RTD sensor.
Applications include environmental monitoring in calibration laboratories, GPS meteorology and weather stations.
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The transducer T7311 is a 3 channel programmable transmitter with an indoor / outdoor temperature, hunidity and barometric pressure probe.
Temperature probes and transducers for Pt1000/3850ppm sensor with two-wire connection and RS232 interface are built in a durable watertight case. Output temperature range is user adjustable. Degrees Celsius and Fahrenheit are user selectable. Large dual line LCD is an advantage. Display is possible to switch off. Computerized design ensures maximum long term stability and fail indication.
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E2405 series differential pressure transmitters are intended for measurement of low absolute, differential or gauge pressure of air or non-corrosive gases. The main application area is the building automation, eg filter control.
- Low absolute, gauge or differential pressure measurement in HVAC applications
- Analog output 4-20 or 0-10 V
- Output scale from 50 Pa to 100 kPa (0,5 mbar to 1 bar)
- RS485 Modbus RTU interface option for direct Fieldbus networking
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Differential Pressure Unit
With more than one million BARTON DPU-based instruments in service around the world today, Cameron's Measurement Systems division is a premier supplier of reliable and accurate chart recorders, indicators, switches and pneumatic controllers. Originally developed in the early 1920s, our differential pressure technology features a welded bellows assembly that increases accuracy while dramatically reducing the effects of wear. To facilitate quick and easy repairs all DPU based instruments are supported with pre-calibrated exchange or repaired sub-module bellows assemblies.
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Yokogawa has more than 45 years' experience in the development, design, and manufacture of pressure sensors and pressure transmitters. The DPharp series of digital pressure transmitters use a differential pressure high accuracy resonance (DPharp) sensor that represents one of the most revolutionary advances in transmitter technology.
EJX Series
The new DPharp EJX transmitters are the latest addition to the DPharp family's EJA series. DPharp EJX transmitters employ a next-generation multi-sensing technology that provides virtually the highest level of performance and precision in the market.
EJA Series
The DPharp EJA series of intelligent differential pressure and pressure transmitters features high performance, durability, and reliability. The pressure detector, the core of the transmitter, uses a silicon resonant sensor that has proven to be highly reliable in the field and offers a complete product lineup.
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Analog and digital indicating units and transmitters for liquid level, differential pressure and flow measurement. Media 6 allows for connection of the dp-cell to your PC in the logistics center.
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Sensor for differential pressure and volume flow, explosion proof
Electrical, explosion proof differential sensors series ExCos-P and RedCos-P, in acc. with ATEX 94/9/EC for use in hazardous areas zone 1, 2, 21 and 22 (in acc. to sensor type), for all kind of gas, mixtures, vapours and dust. 24 VAC/DC supply, Measuring range /- 100 Pa, /- 250 Pa, /- 600 Pa, /- 1250 Pa, /- 2500 Pa, /- 5000 Pa, /- 7500 Pa. Working range adjustable, output 0...10 VDC and 4...20 mA, actual value indication, aluminium housing IP 66, integral Ex-e terminal box. Series ExCos-P for use in Zone 1, 2, 21, 22. Series RedCos-P for use in zone 2, 22.
The module is for installation inside the hazardous area, an interface in the safe area is not required, installation of intrinsic safe circuit is not required. This saves cost, space and guarantees safety.
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Transducer and switching modules for temperature, humidity and pressure, explosion proof
Electrical, explosion proof trandsucer, series ExCos-A, RedCos-A, ExCos-D, RedCos-D and EXL-IMU-1 as well as switching modules series EXL-IRU-1, to connect modulating or binary temperature, humidity and pressure sensors, in acc. with ATEX 94/9/EC for use in hazardous areas zone 1, 2, 21 and 22 (in acc. to sensor type), for all kind of gas, mixtures, vapours and dust. 24 VAC/DC supply, adjustable on site, integral display for programming and for actual value indication.
Series ExCos-A for modulating, analogue sensors (type ExSens) and ExCos-D for modulating, digital sensors (type ExPro), for use in hazardous areas zone 1, 2, 21 and 22. Series RedCos-A modulating, analogue sensors (type ExSens) and RedCos-D for modulating, digital sensors (type ExPro), for use in hazardous areas zone 2 and 22.
Series EXL-IMU-1 for modulating, analogue sensors (type ExSens) for use of sensors in zone 1, 2, 21 and 22. The module must be installed in the safe are and is prepared for DIN rail mounting.
Series EXL-IRU-1 for binary, analogue sensors (type ExSens) for use of sensors in zone 1, 2, 21 and 22. The module must be installed in the safe are and is prepared for DIN rail mounting.
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General description :
Features
* Suitable for hygienic applications
* High accuracy
* Long term proven reliability
* Rugged construction
* Simple installation and set-up
* Standard and bespoke units
* Pneumatic systems for hazardous areas
* Liquid and slurry continuous level measurement
* Continuous pressure monitoring
Level Control
Industry's requirements for level and pressure measurement are as varied as industry itself. Finding a system which can cope with that wide scope and do it accurately, safely and with absolute repeatability is one of the key tasks facing today's process manager. With hazardous products and harsh environments to handle, perhaps requiring intrinsically safe equipment, one of the main factors in choosing a level/pressure system must be its reliability and toughness.
Efficient Level Measurement Solutions
For industry to benefit from the installation of level measurement systems, the selected system must be reliable, repeatable and accurate. In addition, it should be installed quickly, with a minimum of costly down time and it should provide an interface with data acquisition and control equipment.
By employing equipment that satisfies these criteria companies can increase both their efficiency and productivity. However, with so many different techniques to choose from, selecting the best method for your application is difficult.
We at CT Holledge, with our range of pneumatic and electronic pressure sensors, will assist you through the minefield of system selection and supply you with equipment that not only meets your requirements but exceeds them.
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stainless steel, 60 bar max, piezoresistive
stainless steel, 600 bar max, ceramic
compact, stainless steel, 400 bar max, ceramic
stainless steel with flush diaphragm, 600 bar max, ceramic
stainless steel with flush diaphragm, 40 bar max, for food and sanitary sector
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Trafag pressure transmitters are used for the electronic measurement and evaluation of pressure values. They are available in many different versions with regard to pressure and electrical connections, measurement procedures, electric output signals, and approvals (CE, Ex, Shipbuilding, Railways). Two different sensor technologies are available, namely thin-film-on-steel (weld-sealed design without O-rings) and thick-film-on-ceramic. Trafag also develops and manufactures products specifically to customer requirements.
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Single Pressure Transmitters
Adjustable Range Pressure Transmitter - Series 637
Ranges from 3 to 300 psi (0.2 to 20 bar), ±0.25% Accuracy, Gas/Liquid/Vapor, 316L SS, NEMA 4
Adjustable Range Pressure Transmitter - Series 634ES
Ranges from 10 to 5000 psi (.69 to 344.5 bar), ±0.5% Accuracy, 316L SS, NEMA 4X
Digital Indicating Pressure Transmitter - Series DSGT
Ranges from 30" Hg to 20,000 psig, ±0.25% Accuracy, Optional Switch Outputs
Fixed Range Pressure Transmitter - Series 642
Ranges from 15 to 100 psi (1.03 to 6.9 bar), ±0.1% Accuracy, Gas/Liquid, 316 SS, 316L SS
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Compact and easy to integrate, the pressure transmitter GR is equipped with a ceramic cell being able to measure pressures going from -1 to 250 bar. It delivers a signal 4/20mA and is declined with cable output (IP67) or a connector DIN 43650 (IP65).
The transmitter GR type is dedicated to the integrators. The principal applications are the distribution of gas, water and the boilers industrial.
Available in version ATEX EEx ia IIC T5/T6, it can be installed indifferently in zones for gas 0,1 or 2 or zones for dust 20,21 and 22.
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Sensortechnics is a leading manufacturer and distributor of a wide range of sensors and fluid control devices. The product portfolio includes basic pressure sensors, rugged transmitters, submersible level sensors and customised pressure sensing systems from 1 mbar up to 1000 bar as well as liquid level sensors and switches, flow, oxygen and force sensors. Additionally, Sensortechnics offers ultrasonic air bubble, air-in-line, liquid level and fluid monitoring detectors. Fluid control devices include miniature solenoid valves, diaphragm pumps and electronic pressure controllers.
Sensortechnics has more than 25 years of experience in providing highly customised sensing products and in the development of complex integrated fluid control systems for OEM customers worldwide.
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Kavlico's PT250/PT251 series of pressure transmitters incorporate a stainless steel isolation diaphragm and all welded construction to withstand harsh industrial environments. Pressure ranges from 6 to 400 Bar or 100 to 5,000 PSI can be measured using supply voltages of 9-32V. The transmitter provides a 4-20ma output current proportional to applied pressure. The PT250 is specified with pressure ranges measured in Bar and the PT251 pressure ranges are measured in PSI. The rugged construction of the PT250 allows it to be used safely in environments with large over-pressure spikes. The stainless steel diaphragm is compatible with most industrial fluids and gaseous media.
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The MVX-II Multi-Variable Transmitter is a gas measurement unit built around a patented, silicon-based DPE cell. It combines the accurate and stable measurement of differential pressure, static pressure and temperature with high speed input sampling/averaging and communications capabilities. This low powered, field-hardened gas measurement transmitter features an easy-to-use laptop interface and industry standard communication protocol which makes configuration, measurement, and reporting simple, accurate, and reliable.
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OMEGA’s PXM209 Series general purpose pressure transmitters are accurate, highly reliable general purpose voltage or current output transducers suitable for harsh industrial equipment applications. Their high performance is a result of the soild state full bridge construction which uses a micro-machined diffused silicon diaphragm and unique thin-film media with dielectric isolation barriers. The proprietary ASIC provides a wide temperature compensation including tight tolerances for zero balance and span.
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