The DCX-18 ECO is an autonomous, rechargeable battery powered instrument. It features a stainless steel 18 mm in diameter housing designed to record pressure (water depth) and temperature over long periods at a very economical price. Its small size, rechargeable battery, fully welded housing and the relative sensor option are just a few of the many advantages provided by the DCX-18 ECO. The electronics employ the latest microprocessor technology which give high accuracy and resolution for the pressure and temperature signals. The measured values are mathematically compensated for all linearity and temperature errors of the pressure sensor. The use of a non-volatile memory for data storage ensures high data security. DCX-18 ECO The sensor, electronics and the rechargeable battery are housed in a fully welded stainless steel tube for submersible deployment. For data read-out, the DCX-18 ECO must be recovered from the measurement point. The end cap, sealed by two O-Rings, must then be removed to access the serial interface. The DCX-18 ECO works with an absolute pressure sensor. In shallow water depths where the influence of barometric pressure changes should be considered, it is recommended that a second data logger (Baro) is placed at the surface, to record the barometric pressure. The PC then calculates the differential pressure resp. the water depth by subtracting the two measured values. DCX-18 ECO with cable (DCX-18 ECO SG or DCX-18 ECO VG) An optional cable is available for the DCX-18 ECO, enabling data retrieval or configuration and charging the battery without removing the data logger. For relative measuring devices, the cable incorporates a capillary tube which enables venting the relative sensor. Rechargeable Battery: The DCX-18 ECO is charged over the USB connection with the K-104M converter connected to PC. For fast charging, connect the power supply unit or the car charging adapter to the converter. The charge status is displayed in the logger software
The DCX-22 is an autonomous, battery powered instrument made of stainless steel designed to record water depth (pressure) and temperature over long periods. Two versions are offered: DCX-22 The sensor, electronics and battery are housed in a sealed stainless steel tube, for submersible deployment. For data read-out the DCX-22 must be recovered from the measurement point. The O-ring sealed end cap is then removed to access the data port. The DCX-22 works with an absolute pressure sensor. In shallow water depths where the influence of barometric pressure changes should be considered, it is recommended that a second data collector DCX-22 (Baro) is placed at the surface, to record the barometric pressure. The PC then calculates the differential pressure resp. the water depth by subtracting the two measured values
The DCX-25 PVDF is an autonomous, battery powered instrument designed to record water depth (pressure) and temperature over long periods. The housing is made of polyvinylidene fluoride and the sensing diaphragm is available in either Hastelloy C-276 or titanium 6AL-4V. This combination of wetted materials ensures compatibility with even the most aggressive media This data collector (Ø 25 mm) integrates a pressure sensor, electronics and battery in one housing. The electronics employ the latest microprocessor technology, which give high accuracy and resolution for the pressure and temperature signals. The built-in pressure sensor is mathematically compensated for all linearity and temperature errors. The use of a non-volatile memory ensures high data security. The DCX-25 PVDF works with an absolute pressure sensor. For installation, the data collector is secured by a suspension cable and immersed into the media to be measured and must be recovered for data readout. In shallow water, where the influence of barometric pressure changes should be considered, it is recommended that a second data logger (e.g. DCX-22 Baro) is placed at the surface to record the barometric pressure. The Logger PC software then calculates the water depth by subtracting the two measured values. The housing of the data logger can be opened easily without any tools, thus allowing quick access to the replaceable battery and the interface connector for configuration and data download. Interface with a PC is accomplished using one of Keller’s converter cables which are available in either RS232 connection (K103A) or USB connection (K104A). The necessary converter drivers are included with converter purchase, along with the Keller Logger software. This intuitive software provides the capability to customize the instrument, as needed, for each installation. Users can configure the DCX-25 PVDF to record at fixed time intervals, using fixed or eventbased start times, in user-selectable measurement methods to ensure that only the most useful and meaningful data is collected and stored. For applications that do not require highest compatibility with aggressive media, Keller offers the DCX-16, DCX-18, DCX-22 and the DCX-38.
The DCX-38 VG is an autonomous instrument for recording water level with a high resolution and full scale ranges as low as 0,5 mWC / 50 mbar. It features a rugged, gold-plated ceramic diaphragm for outstanding long-term stability and stainless steel housing with user serviceable battery for long service life. Configuration / Data Retrieval: For data readout, the serial interface is accessed via the data port located on one end of the cable, enabling on site data retrieval. Using either the K-104A or K-103A converter cable, the DCX-38 VG connects easily to a laptop or PC via USB or serial port. Used in conjunction with Logger 4.X software, the DCX-38 VG is configured and data retrieved either in the lab or the field
NGM uses TDR (Time Domain Reflectometry) technology, which is also known as Guide Microwave or Guided Wave Radar. This means that low-energy and high-frequency electromagnetic impulses, generated by the sensor’s circuitry, are propagated along the probe which is immersed in the liquid or solid to be measured. When these impulses hit the surface of the media, part of the impulse energy is reflected back up the probe to the circuitry which then calculates the level from the time difference between the impulses sent and the impulses reflected. The sensor can output the analysed level as 4 ... 20 mA analogue output, or it can convert the values into freely programmable switching output signal.
The high-precision multi-parameter probes of the 36XiW-CTD series measure conductivity and temperature as well as pressure, along with the depth of bodies of water. Temperature dependence and nonlinearity are precisely compensated for in the microcontroller by means of a mathematical model. The integrated Pt1000 achieves an accuracy of ±0,1 °C, and the conductivity can be measured at ± 2,5% of the selected range (0,2 / 2 / 20 / 200 mS/cm). The sensors can be supplied with either an RS485 or SDI-12 interface. Extended lightning protection comes as standard with the SDI-12 and is available as an option for the RS485 interface.
This ultrasonic level transmitter is intrinsically safe (IS) and CSA rated for Class I Division 1 hazardous areas in the US and Canada. It has a maximum range of 25 feet (7.62 meters) and is typically used for tank level measurement but can also be used for other hazardous area applications such as measuring the roll diameter on coating machinery. The transmitter sensing element is chemically resistant and the electrical connection is a two-wire loop-powered 4-20 mA output. The SafeSonic 25-L is pre-calibrated from 1 and 25 feet but can be user-calibrated to other ranges using optional accessories.
The level monitor model NSV has decisive advantages, especially with bulk goods with low bulk densitiy. Vibrations are induced in a stainless steel fork by a piezoelectric crystal. If the medium comes into contact with the vibrating fork, this vibration is damped.This damping is detected in a pluggable evaluation module and transformed into a potential-free limit contact. In addition to the standard version NSV-8200, the devices can also be provided for vertical installation with an extended neck pipe (NSV-8201). The maximum length of the neck pipe is 3000 mm. The plug-in evaluation module can be changed easily so that the devices are really easy to maintain. Operation can be set for maximum or minimum security by means of a selector switch (A and B). The respective switching status of the relay is indicated by a LED.
The pressure transmitters Series 26 Y are used in water level measurements that are price-sen - sitive but still require considerable accuracy. Technology Y-series transmitters have an extremely small temperature error. This is achieved by means of digital compensation of an all-analogue signal path. The gain and the zero point of the gain circuit can be influenced by digital/analogue converters. These receive their numerical values from an EEPROM that is addressed depending on the temperature. A mathematical model for TC zero and TC gain with any order can therefore be determined in the calibration process and stored in the transmitter with a resolution of 1,5 K. The accuracy of the end product therefore essentially depends on the amount of testing and the linearity of the measuring cell. With the Series 26 Y, the monocrystalline silicon measuring cell is reliably protected from the measuring medium by a stainless steel diaphragm. The steel diaphragm itself is protected from mechanical influence by a plastic cap, and has outstanding performance features with regard to accuracy and stability due to its large diameter of 17 mm The Y-line transmitters have an extremely small temperature error. This is achieved using an additional circuit containing a temperature sensor that subdivides the temperature range into fields that are 1,5 Kelvin (K) wide. The TK zero and TK compensation values are calculated for each field and programmed into the additional circuit. During operation, these values are fed into the analogue signal path depending on the temperature. Each temperature is the „calibration temperature” for this transmitter. The accuracy thereof is mainly determined by linearity. 120 fields are available, representing a possible temperature range of 180 K. The wider the temperature range, the greater the amount of testing that is needed to minimise the inaccuracy of the mathematical model.
The Series 26 W transmitter utilises the Series 10 piezoresistive capsule, which is housed inside a submersible 316 L stainless steel body as standard. For corrosive applications hastelloy diaphragms and other materials are available as options. Series 26 W vented gauge versions have cable with integral vent tube. These transmitters are fitted with durable PE cable.
This Series is based on the stable, piezoresisitive transducer and a micro-processor electronics with integrated 16 bit A/D converter. Temperature dependencies and non-linearities of the sensor are mathematically compensated. With the READ30 software and the KELLER cable K-107, the calculated pressure can be displayed on a Palmtop, Laptop or PC. The READ30 software also allows the recording of pressure signals and the graphic display on the PC. Up to 128 transmitters can be hooked together to a Bus-system. Programming: Pressure measurements can be displayed and recorded on PC or Laptop with help of the software ControlCenterSeries30 (CCS30) and a seriel interface cable. Export of recordings to usual file formats possible. Up to 128 devices can be connected together into a KELLER Bus-system.
Specifically designed for extended service in sewage lift station environments, the 36 XKY by KELLER features a relatively wide sensing diaphragm yet small overall size. The 36 XKY incorporates a monolithic diaphragm formed from Kynar ® , which combines the non-stick quality of Teflon with superior toughness and abrasion resistance that simplify installation and eliminate the need for bulky and expensive protective cages. The 36XKY utilizes proven piezoresistive silicon measurement technology combined with Kel - ler’s state-of-the-art, microprocessor-based signal conditioning circuitry to provide outstanding accuracy and reliability over a wide compensated temperature range. It is perfectly suited for pump control applications that require standard 2-wire (4...20 mA current loop) or 3-wire (0...10 V) output transmitters. The RS485 interface allows users to scale the analog output to any desired range within the standard pressure range. The 36 XKY is typically suspended into the liquid by a standard Hytrel ® -jacketed cable that is both self-supporting and vented. Optional: Keller’s enhanced lightning protection makes this trans-mitter ideal for installation in areas prone to chronic damage due to transients caused by lightning. Using the Keller CCS30 software and appropriate adapter cable, the user can scale the analog output of the 36 XKY, display and record pressure and temperature readings, and access a variety of other available functions. All of the available functions are defined in the Series 30 Communications Protocol. The CCS30 and Series 30 Communications Protocol are available free of charge from the company website
This pressure transmitter is designed for level measurement in narrow downhole applications where highest accuracy is required. Product Benefits: Only 16 mm diameter, mathematically compensated, programmable, assisting inventory reduction, filtering function 2 ms...30 sec, improved surge protection Pressure measurements can be displayed and recorded on PC or Laptop with help of the software ControlCenterSeries30 (CCS30) and a seriel interface cable. Export of recordings to usual file formats possible. Up to 128 devices can be connected together into a KELLER Bus-system.
Multi-Parameter Probe with Digital Interfaces The 36 Xi W series is built on the latest-generation microcontroller platform, which KELLER has developed to meet extremely high precision requirements and increase compatibility with a wide variety of interfaces. Along with pressure (level) information, digital interfaces also transmit other water parameters such as temperature and conductivity. The 36 Xi W series is based on the proven KELLER 36 X W series using the high-quality 10 L-series pressure transducer. All series X pressure level transmitters feature an RS485 interface, which provide pressure and temperature standard, while versions requiring higher accuraty, temperature or conductivity sensor are available options. Multi-parameter probes fitted with pressure, temperature and conductivity sensors (CTD – conductivity, temperature, depth), are approximately 90 mm longer. Characteristics • Pressure sensor: resolution 5 ppm • Mathematical compensation of nonlinearities and temperature dependencies • Sturdy stainless steel housing (titanium or Hastelloy also available) • Extended lightning protection fitted to the SDI-12 interface as standard • Level measuring ranges from 0…3 m to 0…300 m. Higher ranges are possible using a Sub-Conn® connector • Ultra-high long-term stability
The DCX-16 is an autonomous, battery-powered data collector in a stainless steel housing with a very small diameter of only 16 mm. The housing and the pressure sensor element are completely welded in, so sealing rings are eliminated at this point. In applications where a small probe diameter is an advantage, the logger can record the water level (pressure) and the temperature over long periods. As well as the battery compartment with its double seal, the small-diameter (16 mm) submersible sensor includes electronic circuitry featuring the latest microprocessor technology. It records the pressure and temperature of the medium with high measurement accuracy and resolu-tion, and it uses a mathematical model to correct any linearity or temperature errors made by the pressure sensor. High data reliability is guaranteed thanks to the use of a nonvolatile data memory The various configuration options allow the data logger to be adapted to the measuring point so that only specified events will be detected and stored. Event-controlled recording and loginterval recording can be set independently of one another. In addition, installation data and comments on the measuring point can be stored in the logger. Installation is fast and simple with fixing disks of various sizes which can be fitted as options: these match locking units (caps) from different manufacturers for levels of 1” or more (2” or more with light plummet aperture), so measuring points can be implemented at a fraction of the previous cost. Three versions of the data collector are available: DCX-16 The sensor, electronics and battery are accommodated in one housing. To extract data, the data collector must be removed from the measuring point, and the watertight screw cap that allows access to the read-out plug /interface must be unscrewed. The DCX-16 operates with an absolute pressure sensor. In shallow water, when the influence of air pressure fluctuations has to be taken into account, a second logger (barometric logger, obtainable separately) positioned on the surface of the water must be used to record the air pressure progression. The computer software then calculates the differential pressure or the water level by subtracting the two measured data.
The ToughSonic 14 ultrasonic sensor has a maximum range of 14 feet (4.3 meters). Like all ToughSonic sensors, it’s built for durability and ease of use in tough industrial environments. It’s fully submersible, corrosion resistant, shock resistant and all around tough. It’s also fully configurable with our SenixVIEW software. ToughSonic 14s include our famous “Teach” feature for push button configuration. This compact sensor is used around the world on remote liquid level systems, heavy equipment, factory automation applications and more. This is our most popular sensor. For longer range applications or for chemically resistant sensors, please see our full line of ToughSonic and ToughSonic CHEM sensors.
The ToughSonic CHEM 10 is a chemically resistant ultrasonic sensor designed for applications where corrosive liquids or gasses are present, but it is an excellent choice for benign environments as well. With a maximum range of 10 feet (3 meters), it is the smallest sensor in the ToughSonic CHEM sensor family. The ToughSonic CHEM 10 is sealed in a PVDF (Kynar®) housing. It is fully submersible, chemical resistant and shock resistant. It has a permanently attached, potted-in-place 9-wire cable that allows up to six simultaneous serial, analog and/or switch outputs. It is fully configurable with SenixVIEW configuration and analysis software. Chem series sensors and SenixVIEW software put the power of ultrasonics in your hands. You can quickly adjust, optimize, save and clone your applications quickly without calibration! These sensors are housed in a rugged, chemically inert PVDF sealed housing for long life. They mount above the material surface and measure distance downward without contact. Outputs respond to that measured distance. Applications include pump control, bulk inventory, batch processing, water management and high/low level alarms.
The ToughSonic CHEM 20 is an ultrasonic sensor designed for measurement applications involving corrosive chemical liquids or gasses, but it is an excellent choice for benign materials as well. With a maximum range of 20 feet (6.1 meters), it is the mid-range option within the ToughSonic CHEM sensor family. The sensor is sealed in a PVDF (Kynar®) housing. It’s fully submersible, chemical resistant and shock resistant. The ToughSonic CHEM 20 has a permanently attached, potted-in-place 9-wire cable that allows up to six simultaneous serial, analog and/or switch outputs. It’s fully configurable with SenixVIEW configuration and analysis software. CHEM series sensors and SenixVIEW software put the power of ultrasonics in your hands. You can quickly adjust, optimize, save and clone your applications quickly without calibration! These sensors are housed in a rugged, chemically inert PVDF sealed housing for long life. They mount above the material surface and measure distance downward without contact. Outputs respond to that measured distance. Applications include pump control, bulk inventory, batch processing, water management and high/low level alarms.
The ToughSonic CHEM 35 ultrasonic sensor is designed for distance measurement applications where corrosive chemical liquids or gasses are present, but it is an excellent sensor for benign environments as well. With a maximum range of 35 feet (10.7 meters), it is the longest range member of the ToughSonic CHEM sensor family. The sensor is sealed in a PVDF (Kynar®) housing. It’s fully submersible, chemical resistant and shock resistant. The ToughSonic CHEM 35 has a permanently attached, potted-in-place 9-wire cable that allows up to six simultaneous serial, analog and/or switch outputs. It’s fully configurable with SenixVIEW configuration and analysis software. CHEM series sensors and SenixVIEW software put the power of ultrasonics in your hands. You can quickly adjust, optimize, save and clone your applications quickly without calibration! These sensors are housed in a rugged, chemically inert PVDF sealed housing for long life. They mount above the material surface and measure distance downward without contact. Outputs respond to that measured distance. Applications include pump control, bulk inventory, batch processing, water management and high/low level alarms.
The Series 46 X combines the ceramic measuring cell for low pressure ranges with the μP-elec- tronics of the digital Series 30 pressure transmitters. The signal values of the pressure- and temperature sensors are determined by a polynomial compensation1). The values can be shown and stored on a PC and can be reprogrammed. A reference tube integrated in the cable connects the referential chamber of the sensor with the ambient pressure.
In the high-precision level probe of the 26X series, the temperature dependence and nonlinearity are precisely compensated for in the microcontroller by means of a mathematical model. In addition to the RS485 interface, the measurement results can also be output via the integrated D/A converter as a rangeable analog signal. Extended lightning protection is also available as an option.
The NGR is a level sensor that uses TDR technology (time domain reflectometry) and thus can be used in oil- and waterbased liquids without calibration. The NGR’s guided radar uses time-offlight technology to measure electromagnetic pulses. The time difference between the sent pulse and the reflected pulse is used to calculate the level, both as a continuous value (analogue output) and a freely positionable switching point (switching output). Due to its flexible probe that can be changed or cut, it is possible to integrate the sensor quickly into any application. The NGR can work in deposit-forming and foaming liquids. The sensor’s intuitive setup uses four buttons and a display to ensure quick and easy adaptation to the application.
Chem series sensors and SenixVIEW software put the power of ultrasonics in your hands. You can quickly adjust, optimize, save, and clone your applications quickly without calibration!
The CHEM 12 is housed in a rugged, chemically inert PVDF sealed housing for long life. A new shorter design and smaller diameter transducer allows for easier installation in tight locations, and measurements closer to the top of a tank. The CHEM 12 also has an improved rugged strain relief design.
Applications include pump control, bulk inventory, batch processing, water management and high/low-level alarms.
The SZM type glass tube level indicator is applicable for the indication of liquid level in small and middle-sized, standing or lying round containers used in food, pharmaceutical and chemical industries. The loads occurring at the installation are absorbed by the outer armature, thus the glass tube is protected against breaking. The outer armature also protects the glass tube against the mechanical impacts that may occur following the installation. It is recommended that the normal design level indicators be fitted on vessels containing pure liquids, while the indicators mounted with cleaning stubs (a bottom, or bottom-top stub) be fitted on containers filled with contaminated liquid. Installation length means the distance between the horizontal centre lines of the two fl anges, that is minimum 370 mm, and maximum 3 080 mm. The glass tubes longer than 1 500 mm are welded. The bottom, and top sealing of the glass tube is by two O-rings each, the material of which is to be chosen to be chemically compatible with the liquid measured. Standard sealing material is FPM, whereas EPDM or NBR are available on request. The level indicator may be furnished with capacitive level sensors - max. 3 pieces over 100 mm - as requested (NAMUR design), which monitor the minimum and/or maximum level or any level along the scale. Anodised aluminium rule with indication of level or volume may be mounted optionally on side of the outer armature. The scale can be engraved on the aluminium rule or the glass tube, or can be printed on a foil and to be attached to the glass tube or aluminium rule.