The DPM9244 is a miniature space-saving 92mm x 92mm x 26mm DIN-rail mount programmable load cell transmitter. Configuration and field calibration is done via a notebook or desktop PC using the user-friendly software available from our website. Complete 3-way isolation is provided between the power supply, input and output.
Knowing the exact value of the radiation temperature is essential for the calibration process. It can be measured by either using a contact thermometer (in combination with the determination of the emissivity) or a transfer standard infrared thermometer. This value can then be used to determine the device constant for an initial calibration of the infrared sensors. In order to conduct a post-calibration by customers or local calibration facilities, the calibration temperature should be near the temperatures which occur at the respective applications.
Optris makes use of a transfer standard radiation thermometer CTlaser-PTB (see figure) to measure the radiation temperature of a reference source. The CTlaser- PTB is based on the IR thermometer optris CTlaser. The CTlaser-PTB needs to be traceable to the international temperature scale from 1990 (ITS-90). Thus, it is calibrated by the PTB (German national metrology institute) on a regular basis. ITS-90 is a very good approximation of thermodynamic temperature. It is based on 17 well-reproducible fixed values such as melting points of highly pure metals. Within the framework of ITS-90 the CTlaser-PTB is compared to national temperature standards from the PTB. This comparison within a closed chain of comparative measurements with a known uncertainty in measurement takes place on a regular basis.
Based on the CTlaser-PTB, Optris produces the CTlaser- DCI as a high-precision reference IR thermometer for its customers. The DCI units are produced with pre-selected components supporting high stability of measurement. In combination with a dedicated calibration at several calibration points the CTlaser-DCI achieves a higher accuracy than units from series production.
The optics of an IR thermometer is described by the distance-to-spot-ratio (D:S). Depending on the quality of the optics a certain amount of radiation is also received from sources outside the specified measurement spot. The maximum value here equals the radiation emitted by a hemispheric radiant source. The respective signal change in correlation with a resize of the radiation source is described by the Size-of-source effect (SSE).
As a result of this correlation all manufacturers of IR thermometers use accurately defined geometries for the calibration of their units; meaning depending on the aperture of the radiation source (A) a distance (a) between the IR thermometer and the reference source is defined. Thus, the value specified in datasheets and technical documentation as a measurement field is, in general, a certain defined percentage of this radiation maximum – values of 90 % or 95 % are common.
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.
The portable dry metal block temperature calibrator LR-Cal SOLAR is temperature source and reference instrument in one device, for checking and calibrating of all kind of temperature instruments, such as thermometer, RTDs, Thermocouples, Temperature switches, etc.The ceramic equalizing block, whose large size suits the external dimensions, ensures a proper heat transmission as well as optimal stability and uniformity values. It's interchangeability makes it possible to test sensors of various lengths, with diameters ranging from 1 mm up to 26 mm.The device is equipped with a counter-current forced air cooling system, which keeps the temperature in the upper part of the well low. This feature allows checking also of very short probes, without heating the connecting head or the handgrip.
The LR-Cal FLUID 100 is a portable stirred liquid bath (temperature calibrator, micro bath). 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.
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 Model ACB is a high performance stainless steel beam type load cell. An integral mounting step removes the need for spacer plates and ensures optimum “bolt down” conditions.
This product is suitable for small and medium platform scales, hybrid scales, pallet weighers, and process weighing.
The fully welded construction and the cable entry ensure that this product can be used successfully in demanding environments found in the food, chemical, and allied process industries.
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.
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.
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.
Windows software for communicating with connected KELLER devices. PressureSuite Desktop offers all the options for device configuration and displays current measured values and logger recordings in graph form. Thanks to the search and filter options, saved measurement data can be organised with ease and exported as an image, as an Excel or Word report, or in additional formats. All PressureSuite products are intercompatible and can exchange data with one another. The functions are continually being further expanded and optimised.
The DPM5015, 5 ½ (-199999 to 199999), LED Dual Channel Process Indicator can be applied to many applications which require a dual input and a single display eg. temperature and humidity monitoring. Each channel is individually setup for zero , span, input type and more. The unit boasts a number of useful mathematical functions such as addition, subtraction, multiplication and division. The display as well as alarms, analogue out and peak hold can be selected using channel A, Channel B and the above mentioned mathematical functions. Options include linearisation, analogue output and set-points up to a total of four. Excitation is standard and link selectable for 2-wire / 3-wire transmitters and a potentiometer input. Selected options now feature ‘Plug & Play’ technology, allowing option boards to be ordered separately & field fitted when required.
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.
With the new ratio pyrometers of the CSvision family, it is possible to measure temperatures from 550 °C to 3000 °C reliably from variable distances without contact. The novelty of the CSvision series is the switchable two-stage brightness reduction filter, which makes it easy to sight and focus on very bright objects. The model CSvision R1M measures in a range of 550 °C to 1800 °C (R1ML) or 900 °C to 3000 °C (R1MH), both versions have a motorised focus, with an optical resolution of up to 100:1(R1ML) or 150:1 (R1MH) and operate in the spectral range from 0.8 µm to 1.1 µm. The ratio pyrometer can be used in adverse environments from 0 °C up to 65 °C without additional cooling. Due to the dual-channel measuring principle, the CSvision are largely insensitive to dust, steam and dirty viewing windows.
The Calog-LC Display is a portable, handheld unit that is able to display a Load cell value.The Lithium-Ion battery makes it possible to use the calibrator for a reasonable period of time as a portable load cell indicator in industrial plants or emergency situations. For longer applications, such as with a cattle scale, auxiliary power can be supplied via an external 12volt battery, charger or car cigarette lighter socket. In order to display mass, force, strain or torque from load cells the unit allows you to set the sensitivity in mV/V, range, decimal points and units.Zero trim can offset deadweight and span trim is available to increase the reading accuracy with the help of calibrated weights. Selections of software options such as tare, peak hold and auto-zero maintenance are included. The indicator can be used for one 350 Ohm or three 1000 Ohm load cells with a fixed 5Vdc excitation.
The DPM6004MF use the latest ARM microprocessor technology to offer a powerful, compact, field-mount unit that you can select for a variety of weighing functions at a cost-effective price. The main advantage to the user, servicing organisation or marketing company is having one electronic unit that can be used for almost any application in the weighing industry. A loadcell transmitter is used to convert loadcell outputs into a standard instrumentation analogue signal such as 4-20mA or 0-10volts, it will also supply power to excite one or more load cells. The 6004MF has many additional features such as displays for mass and programming, digital communications for direct connection to control computers and alarms. Our weighing electronics has always incorporated a recalibrate, zero trim and span trim feature. This is a simple way to set up a strain-gauge load cell system. All the variables, such as sensitivity and range, are inserted in the precalibrated section so that the system is reasonably accurate before adding test weights. The weighing system is then zero trimmed (back balanced) to offset the dead weight of weigh bin, weigh frame or weighbridge deck. With known test weights the system can be span trimmed to get higher accuracy. In some instances, such as very large weigh tanks where it is not possible to use test weights, pre-calibration using factory test certificates for loadcell sensitivity results in acceptable overall system accuracy. The ARM processor used incorporates a USB port and a real-time clock with day/date. We have made full use of these facilities and added an optional, factory fitted, global positioning system (GPS) to cater for such applications as on-board truck weighing, positioning and data logging. In refuse removal, some countries are introducing legislation for customers to pay by weight for this service. Farmers are starting to monitor crop production and fertiliser distribution by location to improve farming efficiency. Logging contractors need to load for maximum profit without incurring overweight fines. The unit is available as the DPM6004MF Multi-function unit -, a DPM6004LC - a load cell field mount transmitter and the DPM6004BW - a dedicated Belt weigher field mount transmitter.
4 digit ASCII bus/DIG bus,45mm display
The Series PD-39 X does not measure the differential pressure directly – instead, it uses two absolute pressure sensors to take the measurement indirectly. As well as reducing costs, this differential pressure transmitter is also more robust in relation to unbalanced (one-sided) overloading. The differential pressure range should be at least 5% of the standard pressure range. Each pressure side has two pressure connections, so the 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 Series PD-39 X does not measure the differential pressure directly - instead, it uses two absolute pressure sensors to take the measurement indirectly. As well as reducing costs, this differential pressure transmitter is also more robust in relation to unbalanced (one-sided) overloading. The differential pressure range should be at least 5% of the standard pressure range. Each pressure side has two pressure connections, so the PD-39 X is easy to use in pressure lines So that the differential pressure can also be measured exactly if the standard pressure range/ differential pressure ratio is high, this series also features the tried-and-tested microprocessorbased technology that is used in Series 30 X. All reproducible pressure sensor errors (i.e. nonlinearities and temperature dependencies) are entirely eliminated thanks to mathematical error compensation. The sensor signals are measured with a 16-bit A/D converter, so the individual standard pressure ranges can be measured to an accuracy of 0,05%FS throughout the entire pressure and temperature range. Digital Interface The transmitters have a bus-compatible two-wire RS485 half-duplex interface which is modelled on the ”MODBUS RTU”. KELLER offers interface converters to RS232 or USB for use here. The READ30/PROG30 program and the protocol are freely available. The interface offers these capabilities: - Readout of pressure and temperature values for both sensors. This allows readout of the diffe- rential pressure as well as the two standard pressure ranges. - Calibration of zero points and amplification. - Scaling of the analog output to different pressure ranges or units. - Configuration settings such as measurement rate, low-pass (LP) filter, bus address, etc. - Readout of information such as serial number, compensated pressure and temperature ranges, etc. Analog Output The analog output is freely scalable via the interface. For flow measurements, the root of the differential pressure can also be outputted. The calculated value can be outputted via an analog interface (0…10 V or 4…20 mA).
The high-accuracy LEO-Record-Ei digital manometers can record pressure and temperature autonomously for long periods thanks to their memory function. The data logger can be connected to a computer via the RS485 interface for configuration and for reading out the recorded data. The current pressure value can be displayed in a wide variety of units of pressure. Power is supplied by a high-quality 3,6 V lithium battery.
Intrinsically safe – suitable for use in explosive atmospheres.
The vacuum test pump LR-Cal 2941 is used to generate vacuum (negative pressure) for checking, adjusting and calibrating mechanical and electronic pressure measuring instruments by comparative measurements. These vacuum 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 vacuum is applied to the two measuring instruments when the vacuum test pump LR-Cal 2941 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 vacuum test pump LR-Cal 2941 is easy to operate and allows for exact generation of the required test vacuum. The LR-Cal 2941 is fitted with a fine adjustment valve for precise adjustment of vacuum. 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 Model 5016, is a 2 by 3 Digit (-99 - 199) LED Dual Channel Process Indicator which can be applied to many applications which require a dual input and a dual display eg. Temperature and humidity monitoring. Each channel is individually setup for zero , span, input type and more. The display as well as alarms, analog out, peak hold can be selected using channel A or Channel B. Options include linearisation, analogue output and set-points up to a total of four. Excitation is standard and is link selectable for 2-wire / 3-wire transmitters and a potentiometer input. Selected options now feature ‘Plug & Play’ technology, allowing option boards to be ordered separately & field fitted when required.
The newly developed optris Xi 400 combines the benefits of a robust, compact pyrometer and an advanced IR camera. The 80 Hz frame rate allows for the monitoring of fast thermal processes, even including a line-scan function. The spot finder IR camera has an optical resolution of 382 x 288 pixels and comes with an extensive ready-to-use package - including a versatile image processing software.
Due to its compact design and an affordable pricing, the new optris Xi spot finder IR camera is ideally suited for OEM applications.
The CALOG-TEMP, Multi-Function Temperature Calibrator is a high-precision, hand-held calibrator for the calibration and troubleshooting of process control instrumentation. The CALOG-TEMP simultaneously measures and sources ten types of thermocouples and seven resistance temperature detectors (RTD), whilst automatically capturing the calibration results. It measures milliamps whilst sourcing or simulating millivolts, TCs, RTDs or ohms to calibrate transmitters. The CALOG-TEMP logging facility stores data on the SD card supplied, which is easily downloaded to a PC via the onboard USB port and usable in most of the common spreadsheet formats. The trend feature is ideal for graphing temperature profiles and PID controller optimization with a programmable timebase. In addition, the CALOG-TEMP has the functionality necessary to install and maintain all powered and non-powered transducers using the built-in 24V loop power supply. The CALOG-TEMP is the economical choice for people wanting to do industrial field or workshop calibration.