Universally applicable wire-actuated encoder with measuring lengths of max. 12000 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.
Profile LEC200: Repeat accuracy max. ±2 μm Max. resolution 0.2 µm (LD output circuit) Reading distance 0.1 … 1 mm Works with magnetic tape MB200/1 Signal period 2000 μm Output circuit sin/cos or LD Function and status display LEDs
Profile MSK500/1: Max. resolution 5 μm Speed-proportional signal output IP67 protection category fixed reference point Insensitive to dust, shavings, humidity, etc.
Profile MSA: To be connected to magnetic displays MA505 and MA561 Max. resolution depends on downstream electronics unit Repeat accuracy depends on downstream electronics unit Reading distance ≤1 mm Max. measuring length 5120 mm
Due to their short measuring wavelength and the high temperature range of up to 2,200°C the pyrometers optris CT 1M and 2M are ideally suited for employment in high-temperature measurements of metals, metal oxides, and ceramics. The short measuring wavelength of the infrared pyrometers additionally decreases measuring errors during low or changing emission levels.
The small sensor head allows for easy installation in limited and cramped spaces. Moreover, it reliably measures temperatures even in ambient temperatures of up to 125°C.
Due to its short measuring wavelength and a temperature range from 50°C on, the pyrometer optris CT 3M, is ideally suited for employment inlow-temperature measurements of metals and composite materials. The quick response time of only 1 ms allows for a problem-free use of the metal thermometer in fast processes. The electronics box of the measuring device allows a flexible terminal device through selectable analog outputs as well as various optional digital interfaces.
Due to its special spectral range of 3.43 µm, the pyrometer optris CT P3 is perfectly suited for precise temperature measurements of thin plastic films like PE, PP and PS.
It measures temperatures precisely from 50 °C up to 400 °C and its measuring head offers a temperature resistance of up to 75°C without additional cooling. Its separate electronics box is acclaimed for its easily accessible programming buttons and its illuminated LCD display.
Due to its special spectral range of 5.0 µm, the pyrometer optris CT G5 is perfectly suited for the measurement of glass temperatures, e.g. during container glass production, vehicle glass production or solar cell production.
The IR thermometer’s stainless steel measuring head is extremely small and can be employed in ambient temperatures of up to 85°C without additional cooling. A multi-installation of the pyrometers, e.g. in series as line scanner, is therefore cost-efficient and can be performed even in limited spaces.
Due to its special spectral region of 7.9 µm, the innovative pyrometer optris CT P7 is perfectly suited for temperature measurements of thin plastic materials like PET, PU, PTFE, PA or CTA.
It measures temperatures precisely from 0°C up to 710°C and its measuring head offers a temperature resistance of up to 85°C without additional cooling. The separate electronics box of the foil thermometer is acclaimed for its easily accessible programming buttons and its illuminated LCD display.
The infrared thermometer optris CSlaser 2M has been designed specifically for exact temperature measurement of metallic surfaces. Its short measuring wavelength allows not only for precise measurement of metal temperatures but metal oxides and ceramics as well.
The IR thermometer is equipped with an innovative double laser sight for precise marking of the measuring spot. A variety of scopes ensures high adaptability with various applications.
The infrared thermometer optris CSlaser G5 HF has been specifically designed for temperature measurement of flat glass, container glass, lightbulbs, vehicle glass, and solar cells.
Its standardized two-wire interface provides a reliable measuring data transmission and allows for an easy integration of the temperature sensors into a Siemens PLC. The IR thermometer is additionally equipped with an innovative double laser visor for a precise marking of the measuring spot. A variety of optics ensures high adaptability with diverse applications.
The video pyrometer optris CSvideo 2M, with its integrated video sighting allows for an additional visor assistance. Combined with the innovative and patented crosshair laser, it offers a reliable and precise measuring field adjustment in hard-to-reach areas and in cases of measuring objects being so hot the laser visor is not visible anymore.
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.
The low-cost OEM pressure transducers of the 6S series are based on a piezoresistive measuring cell with a brazed metal diaphragm in a steel housing.
The pressure transducers of the 9L series have a compact, robust housing made of stainless steel, giving them outstanding long-term stability for a range of OEM applications. The metal diaphragm is welded on front-flush and gap-free, separating off the piezoresistive pressure sensor, which is made of silicon, from the measuring medium. Every pressure transducer is measured over the entire pressure and temperature profile and is supplied with a detailed calibration sheet .
The pressure transmitters of the 21Y series have no internal seal and a high insulation voltage of 300 VDC, and are extremely resistant to environmental influences. The sophisticated compensation circuit makes it possible to specify a narrow total error band. A wide range of pressure connections and electrical connections are available to choose from.
Ultramodern welding techniques and advances in the miniaturization of electronic circuits now make it possible to manufacture a pre-insulated, piezoresistive micro-transmitter with properties that were no more than a dream 10 years ago. The circuit is based on the PromComp principle which KELLER offered in a separate version as a laboratory device 20 years ago when it attained accuracy of 0,1 %FS over a temperature range of 100 K. In those days the electronic circuitry was the size of a cigar box, but now it can be accommodated on a print that is a mere 12 mm in diameter. Although this digital component is only slightly more expensive to produce than an analog circuit, it allows a piezoresistive sensor to be calibrated to an accuracy of 0,5 %FS over a potential temperature range of 100 K. A temperature sensor divides the temperature range into fields with a width of 1,5 K each. Two values are assigned to each field in an EEPROM: one value for the zero point and another for the amplification, determined by mathematical interpolation in the calibration process. During operation, the corresponding values are ‚switched in’ at the relevant temperatures. The electronics make it possible to assign up to 120 fields so that a temperature range of 180 K can be covered. The 100 K restriction for series 21 PY is due to the sensor This means that more or less any temperature can be the ‚calibration temperature’ for these transmitters. Calibration and temperature errors within a temperature field are within ± 0,2 %FS. The remainder of the error bandwidth of ± 0,5 %FS can be attributed to linearity and stability errors. So it’s goodbye to the days when sensor engineers had to struggle every day with TKN (zero point) and TKG (gain/amplification) problems. The 21 PY product line is outstanding due to its extreme ruggedness towards electromagnetic fields. The limits of the CE standard are undercut by a factor of up to 10 with conducted and radiated fields, thus making this product ideal for use in harsh industrial environments.
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 Series 23 (S)Y/25 Y product line is outstanding due to its extreme ruggedness towards electromagnetic fields. The limits of the CE standard are undercut by a factor of up to 10 with conducted and radiated fields.
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.
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.