Series 22 offers a reliable cost effective solution for customers requiring medium to high quantities, of mass produced transmitters. Utilising the KELLER automatic brazing lines, this new technology allows crevice-free construction of the pressure port with no internal seals or O-rings, making possible high volumes at low cost. In the brass 22 M, a steel insert and a nickel diaphragm are brazed into a brass housing. In the steel 22 S, all parts are stainless steel (AISI 316 L). The glass feed-through header and silicon pressure sensor are welded to the steel insert underneath the oil filling. The electronic circuit is fitted to the Packard plug. EMC-protection-components are mounted on the plug side, the amplifier on the sensor side. A flexible printed circuit “TAB” connects the sensor with the electronics. The transmitters are designed to have exceptionally good EMC ratings and operate over a wide temperature band, ideal for automotive, hydraulic and refrigeration control applications
The micro processor controland multi-point calibration gives the PCMini52 RH probe excellent performance in terms of accuracy and linearity. The mini probe can provide two linear analog outputs for temperature and relative humidity, dew point, absolute humidity or wet bulb temperature.
The PC 33 & 52 series offers a comprehensiverange of relative humidity probes for accurate, stable and repeatable measurements. Available with analog output signals, the PC series can be installed in a wide variety of applications.
The Series PRD-33 X was developed for applications that require a high accuracy differential pressure measurement together with high overload resistance in differential pressure ranges as low as 350 mbar. The Series PRD-33 X is the result of ongoing development of the KELLER PD-33 X differential pressure transmitter. Thanks to a second integrated pressure sensor, the line, or common mode, pressure can now be measured along with the differential pressure, resulting in several notable features not found in traditional differential pressure transmitters. For example, compensation for line pressure effect is now accomplished during factory calibration. Moreover, both differential and line (absolute) pressure may be read by the user. In addition, the PRD-33 X features high differential overload resistance; e.g., ± 35 bar with a differential measuring range of only 350 mbar (100:1). The internal differential pressure sensor element is isolated from the High (+) side media by a compliant stainless steel diaphragm, while the Low (-) side media impinges directly on the back side of the silicon measuring cell. Also isolated from the High (+) side media is the line (absolute) pressure sensor. The floating sensor assembly guarantees maximum decoupling from external mechanical forces. Another notable feature of the Series PRD-33 X is the robust digital RS485 bi-directional communication interface. Information such as serial number, pressure range, filter settings and process values for both differential and line (absolute) pressures and their temperatures are easily obtained. This combination of features enables certain measurements not possible with traditional differential pressure transmitters. For example, filling levels in liquefied gas storage tanks, including oxygen, nitrogen, carbon dioxide and argon can now be measured safely, accurately and at reasonable cost.
The 9600 is a miniature space saving DIN rail mount loop powered isolator designed specifically to eliminate ground loop measurement problems. The unit generates an output current in a load which is the same as the input current but galvanically isolated. The unit boasts galvanic isolation in excess of 1000V between input and output and requires no additional power supply. The 9600 is available in single or dual input/ouput versions. The dual unit can also be used to obtain two isolated outputs from one input (wire in series).
This compact and innovative dry block temperature calibrator is especially designed for field applications, robust and able to maintain high accuracy and stability in severe conditions such as offshore rigs and on board of vessels. The self contained unit is very compact, portable and light weight. The innovative forced air ventilation of model LR-Cal PYROS-650 greatly reduce the cooling time and prevents the sensors under test from being exposed to excessive heating.
The pressure test pump LR-Cal 2911 is used to generate pressure for checking, adjusting and calibrating mechanical and electronic pressure measuring instruments by comparative measurements. These pressure tests may be carried out in laboratories, workshop or on site at the measuring point. If the instrument to be tested and a sufficiently accurate reference measuring instrument are connected up to the test pump, the same pressure is applied to the two measuring instruments when the pressure test pump LR-Cal 2911 is is operated. By comparing the two measure valuses at random pressure values, the accuracy can be verified or the instrument under test can be adjusted. Despite its compact dimensions, the pressure test pump LR-Cal 2911 is easy to operate and allows for exact generation of the required test pressure. The LR-Cal 2911 is fitted with a fine adjustment valve for precise adjustment of pressures. Pressure connection is made with 4 mm hose, a T-piece wich quick-coupling and a piece of hose is included in standard delivery.
The Optris PI 450i G7/ PI 640 G7 infrared cameras are the first industry-specific thermal imaging cameras in the PI series. Designed specially for the glass industry, this camera measures in only one spectral range.
The IR camera is used as a line-scan camera in the field of sheet glass production and offers various possibilities for documenting and controlling the process.
This compact, high-performance infra-red camera for the glass industry is available with interchangeable lenses and industrial accessories. The comprehensive license-free software package “Optris PIX Connect” is included in the price.
Digital Output of Transmitter: This high precision of 0,01 %FS is available as an option (the standard Series 33 X has an accuracy of 0,05 %FS). These Series are based on the stable, floating piezoresisitive transducer and the newly developed XEMICS micro-processor with integrated 16 bit A/D converter. Temperature dependencies and non-linearities of the sensor are mathematically compensated. Transmitter with Analog Output: Integrated in the XEMICS processor is a D/A converter of 16 bit for analog signal outputs of 4…20 mA or 0…10 V. The output rate is 400 Hz. The accuracy is diminished by this converting process by 0,05 %FS. The digital output is available on all transmitters with analog output. Programming With the KELLER software READ30 and PROG 30, a RS485 converter (i.e. K102 or K107 from KELLER) and a PC, the pressure can be displayed, the units changed, a new gain or zero set. The analog output can be set to any range within the compensated range. Accuracy and Precision “Accuracy” is an absolute term, “Precision” a relative term. Dead weight testers are primary standards for pressure, where the pressure is defined by the primary values of mass, length and time. Highest class primary standards in national laboratories indicate the uncertainty of their pressure references with 70 to 90 ppM or close to 0,01%. Commercial dead weight testers as used in our facilities to calibrate the transmitters indicate an uncertainty or accuracy of 0,025%. Below these levels, KELLER use the expression “Precision” as the ability of a pressure transmitter to be at each pressure point within 0.01 %FS relative to these commercial standards. The transmitter’s full-scale output can be set up to match any standard of your choice by correcting the gain with the PROG30 software.
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.
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 pyrometer optris CThot LT has been developed for the most extreme conditions in high-temperature areas and is acclaimed for its especially high temperature resistance. Employment of the inrared thermometer in ambient temperatures of up to 250°C without additional cooling poses absolutely no problems.
Due to the mentioned features, the IR pyrometer is especially suited for applications in driers, in tempering for metal and glass industries, in the processing of plastics and textiles, and in the semiconductor production. By request, the IR thermoemters are available in an explosion-safe design with ATEX certificate.
The Calog LOOP II is a high precision, multi-function, hand-held calibrator designed for the process control industry. It’s speciality is milliamp loop powered instruments which it can measure, source and simulate. DC voltage and circuit continuity can also be measured.
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The pyrometer optris CT LT is equipped with one of the world’s smallest infrared sensors with a high optic resolution of 22:1. Additionally, it offers a high variability due to selectable analog outputs as well as several digital interfaces in the electronics box.
The extended version, the pyrometer CTex LT, is additionally equipped with Zener double barriers (for employment in explosion-prone areas).
The pyrometer optris CSmicro 3M has been designed for a temperature range from 50°C to 600°C. Its special spectral range of 2.3 µm makes it the ideal IR pyrometer for temperature measurement of metallic surfaces starting from 50°C and it allows for measurements through glass.
The small infrared measuring head is optimally suited for installation in limited spaces and subsequently makes possible an especially cost-efficient mechanical process integration.
The CSmicro series can now be operated via the new IR mobile App (Android). The App enables to monitor and analyze infrared temperature measurements on a connected smartphone or tablet.
The pressure transducers of the PD-10L series have been developed to measure differential pressure. These OEM pressure transducers have a single silicon diaphragm in their interior, which is pressurised from both sides and measures the pressure difference directly. This design enables them to measure tiny pressure differences even at an extremely high line pressure.
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.
The pressure test pump LR-Cal LPP 40 is used to generate pressure and vacuum for checking, adjusting and calibrating mechanical and electronic pressure measuring instruments by comparative measurements. These pressure tests may be carried out in laboratories, workshop or on site at the measuring point. If the instrument to be tested and a sufficiently accurate reference measuring instrument are connected up to the test pump, the same pressure is applied to the two measuring instruments when the pressure test pump LR-Cal LPP 40 is operated. By comparing the two measure valuses at random pressure values, the accuracy can be verified or the instrument under test can be adjusted. Despite its compact dimensions, the pressure test pump LR-Cal LPP 40 is easy to operate and allows for exact generation of the required test pressures; a change-over switch enables the generation of vacuum as well. The LR-Cal LPP 40 is fitted with a fine adjustment valve for generation of high pressure and a precise adjustment of pressures. The reference instrument is screwd directly on the top of the pump and the unit under test is connected by means of the connection tube incorporating an adapter 1/4" BSP female thread (freely rotating), contained in the scope of delivery.
Universally applicable wire-actuated encoder with measuring lengths of max. 6000 mm, robust construction as well as precise and safe wire guidance, geared up for attaching the most diverse types of rotary encoders with a 58 mm standard flange.
The newly developed optris Xi 80 combines the benefits of infrared cameras and infrared thermometers.
A full 80x80 thermal image eliminates the hunt for the hot spot and tedious positioning required with single spot temperature sensors. The integrated spot finder function will identify the hottest (or coldest) spot in the image and automatically communicate these measurements without an external PC.
A wide range of optics including the new 80° lens equips the Xi 80 to collect and analyze temperature information over a wide target area. The affordable pricing for this unit makes it a realistic alternative to replace existing spot temperature sensors or for OEM applications.
The IG07 is a robust incremental encoder with through hollow shaft, which is nearly indestructible even under the harshest ambient conditions.Shaft Encoders: Heavy Duty AluminumHollow Shaft Encoder, dual channel
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
Piezoresistive pressure transmitter for applications in bio-reactors or autoclaves. The transmitter is compensated up to 150 °C and may be operated continuously or sterilised at this level, including the special circuit electronics The transmitters are supplied in absolute or gauge versions, with current or voltage output. The sensing component is a micro-machined silicon pressure chip of high sensitivity. An independent temperature sensor is integrated on the surface of the silicon chip