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.
The Series 41 X combines the ceramic measurement cell for low pressure ranges with the µP electronics of the digital Series 30 transmitter. The pressure values from the signals of the pressure and temperature sensors are determined by polynomial compensation (see reverse). The values can be displayed and stored on a PC via an RS485 interface and programming can also be carried out.
The transmitters are calibrated to the base range. The PROG30 software permits programming of the analog output signal in each section of the range within the base range (e.g. range 100 mbar. Output 4…20 mA for 20…60 mbar).
With KELLER RS converters K-100 Series, up to 128 transmitters can be hooked together into a bus system and read by means of a PC or laptop. READ30 software allows the current pressure of each transmitter to be read or the pressure activity of several transmitters to be recorded or stored whilst “on line”.
The LR-Cal FLUID 200 is a portable stirred liquid bath (temperature calibrator). The instrument is suitable for calibrating temperature sensors and thermometers of all sizes, diameters and shapes, without the need of specifically drilled blocks. The calibration baths are perfect for checking and calibration of glass thermometers.
The infrared pyrometer optris CS LT is perfectly suited for temperature measurement in small and narrow environments. The robust measuring heads have been developed for use in temperature ranges from -50°C to 1,030°C and can be employed in ambient temperatures of up to 80°C without additional cooling.
The inexpensive IR pyrometers are perfectly suited for OEM solutions. They also work ideally for multiple employments of infrared measurement points.
The pyrometer optris CSmicro LT HS sets new performance standards in the measurement of slightest temperature differences of 0.025 K. Due to the stainless steel measuring head, it is perfectly suited for installation in especially limited and cramped spaces.
The compact infrared thermometer measures precisely in a temperature range from -20°C to 150°C and is equipped with an intelligent LED display, utilizable as alarm signalization, target support, self-diagnosis or temperature-code display.
New: 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.
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 new compact infrared camera optris Xi 410 combines all the benefits of infrared cameras and infrared thermometers.
The Optris Xi 410 has a fast Ethernet interface and can be powered by PoE. This allows for a simple installation, even if the distance from the PC is large. The built-in hot spot finder function can be used to reliably measure moving objects without having to reposition the camera. If the network connection is interrupted or if the connected PC has a problem, the camera immediately switches to the autonomous stand-alone mode which ensures a continuous measurement and alarm. Thus the reliability of problem detection (typically exceeding a threshold in the context of monitoring a fire outbreak) is maintained. Thanks to this unique feature, the Optris Xi 410 is ideal for all safety applications related to fire prevention, detection of critical hot spots, monitoring of industrial equipment and storage of all kinds.
The Optris Xi 410 incorporates a motorized remote focus, controlled by the free PIX Connect software. The resolution of the camera is 384 x 240 pixels with a frame rate of 25 Hz.
The DT722 is a ruggedindustrial relative humidity and temperature transmitter designed for process applications where accurate, stable measurement and control of humidity and temperature is required
This compact and innovative dry block temperature calibratior is expecially 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-375 greatly reduce the cooling time and prevents the sensors under test being exposed to excessive heating.
The DPM5600, a six digit LED Universal Process Indicator can be applied to most process variables with analogue & digital inputs. This high accuracy, high-quality panel meter is designed for accurate measurement & display of pressure, level, flow, frequency, DC voltages or currents & revolutions per minute. Options include linearisation, analogue output and set-points (up to a total of four). The display & analogue output is programable from the front push buttons.
Excitation is standard & link selectable for 2-wire / 3-wire transmitters, encoders & potentiometer input.
Selected options now feature ‘Plug & Play’ technology, allowing option boards to be ordered separately & field fitted when required.
The Models 3506 and 3505 are low power, liquid crystal display, loop powered 3½ Digit Indicators.
Switch selectable display calibration and decimal point selection allows for easy field setting of engineering units for pressure, flow, level, mass etc.
These high accuracy, high quality LED indicators are used for universal process, counting and frequency applications. The -T option includes process integration / totalisation function. These indicators can be applied to most process variables with analogue & digital inputs, such as the measurement & display of pressure, level, flow, frequency, DC voltages or currents & revolutions per minute. Options include linearisation, analogue output and set-points up to a total of four
5 Digit ASCII bus/DIG Bus, 57mm display
Selet has designed a new series of capacitive sensors with more compact dimensions than the traditional sensors on the market: 40mm, in total, of which 33 mm belonging to the threaded part for the flush version, and 50 mm, in total, for the non-flush version.
New constructive technology has allowed the creation of such products.
The sensitivity adjustment does not occur through a trimmer but using a teach-switch placed at the back of the sensor.
The Calog DPM9500 is a miniature space saving DIN rail mount current / volt / potentiometer two-wire transmitter. The Calog DPM9500 accepts standard process inputs of 0(4)-20mA, 0-2V, 0-10V, 0-20V or potentiometer and converts them to a 4-20mA loop powered signal. The Calog DPM9500 also has an LED function for indicating the state of the loop (LED intensity indicates the amount of current flowing in the loop). The Calog DPM9500 can be ordered with or without the onboard loop power supply option.
The Series 1000 and 2000 are a range of extra large 3 to 5 digit LED array displays, 125 mm digit height, designed to be used in process / temperature / weighing applications where high visibility and distant viewing is required. Using high intensity wide angle LED's in an IP65 enamelled steel housing ensures clear viewing distances of greater than 50 metres. For high ambient temperature conditions, an optional special coated glass window is available.Typical applications include downtime, time and production control in large factories, the indication of load cell inputs / crane overload protection, process signals such as temperature, pressure, level, and AC or DC voltages and currents.For electrical specifications, input signal details, as well as the terminal connector assignments in the Extra Large Display, see the individual indicator operating manuals (e.g. Model 4001). Standard DPM indicators are used and internally fitted for the internal signal conversion for the Extra Large Displays. (Models ending in a 2)
The Load cell 9363 is a multipurpose stainless steel S-type load cell which can be used in tension or compression. This product is suitable for a wide range of hybrid scales, overhead track scales, belt scales, and process weighing applications. Reliable sealing is ensured by the proprietary TRANSEAL potting compound and additional mechanical protection of the strain gage area. This product meets the stringent Weights and Measures requirements throughout Europe and the USA.
6 Digit ASCII bus/DIG Bus, 20mm display
The pyrometer optris CSmicro 2M has been designed for a temperature range from 250°C to 1,600°C. Its special spectral range of 1.6 µm makes it the ideal IR pyrometer for temperature measurements of metals.
The small infrared measuring head is perfectly suited for installation in very limited spaces and allows for 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.
These high accuracy, high quality LED indicators are used for universal process, counting and frequency applications. The -T option includes process integration / totalisation function. These indicators can be applied to most process variables with analogue & digital inputs, such as the measurement & display of pressure, level, flow, frequency, DC voltages or currents & revolutions per minute. Options include linearisation, analogue output and set-points up to a total of four.
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 140-2L greatly reduce the cooling time and prevents the sensors under test from being exposed to excessive heating.
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 pressure transmitters Series 26 Y are used in water level measurements that are price-sen
sitive but still require considerable accuracy.
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.