The pressure transmitters of the 7LD series use the chip-in-oil technology developed by KELLER, uniting a pressure measuring cell, digital temperature compensation and signal processing in a compact housing made of stainless steel or Hastelloy. The transmitters are extremely resistant to environmental influences and delivery highly accurate measurement results as a digital output signal. The I2C interface and the low supply voltages make it easy to integrate in microcontroller-based systems. The extremely low power consumption is ideal for battery-operated devices. The D line is perfect for IoT solutions.

The HygroFlex1 series contains inexpensive HVAC transmitters for relative humidity and temperature measurement. The devices are equipped with the Rotronic tried-and-tested Hygromer® IN-1sensor and boast unbeatable value for money.

The HF5A-series is the latest development in advanced measurement transmitters. Compatible with our range of digital (HC2, HC2A and RMS) probes for humidity and temperature, temperature only, and differential pressure. The HF5A can also provide all standard psychrometric outputs. Our advanced digital probes have integrated AirChip3000 technology – thanks to which the probes achieve an unparalleled degree of accuracy. For Humidity and Temperature measurements the HygroFlex5 Advanced HF5A-21, HF5A-31 and HF5A-D1 transmitters combined with a HC2A-S advanced probe provide superb precision and state-of-the-art functionality, taking humidity and temperature measurement to a whole new level of accuracy < 0.8 %rh and < 0.1 K at 23 °C. HygroFlex5 outputs include mA, voltage and modbus RTU via RS485.

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 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.

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.

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.
 

This compact thermal camera combines the benefits of infrared cameras and infrared thermometers.

Compact spot finder for temperature measurement through flames

The Optris Xi 410 MT compact thermal imaging camera is designed to withstand high ambient temperatures and provide accurate measurements even through flames. Perfect for applications such as furnace monitoring, but also for observing the target temperature in chemical reactors. The Optris Xi 410 MT is built for intensive industrial use, so users can rely on its durability.

Installation and Application are Easy with Motor Focus

The Optris Xi 410 MT compact thermal imaging camera is equipped with a motor focus and is calibrated for temperature measurements from 475 °C to 1700 °C (887 °F to 3092°F).

The Easidew sensor is a moisture meter that measures both dew point and moisture content. It is simple to install as it is available with a wide range of process connections and electrical connectors. All Easidew dew-point transmitters are available with a service exchange program which reduces the cost and time spent on maintenance.

Reconfiguration of the transmitters is simple with the self-contained Easidew and Pura communications kit.

Michell’s Ceramic Metal-Oxide Moisture Sensor-based Hygrometers are calibrated to international standards and are delivered with a traceable calibration certificate...

The Optris Xi 1M is a short-wavelength infrared camera that offers innovation, affordability, and precision in non-contact thermal imaging of challenging objects. Designed to operate within the short-wavelength infrared range (1M: 0.85 – 1.1 μm), this forward-looking infrared camera is engineered to capture measurement data for precise surface temperature analysis of hot steel, iron, brass, copper, tin, carbon, ceramics, and semiconductors. Addressing the rigorous demands of various industries, the Optris Xi 1M offers wide elevated temperature measurement ranges, exceptional accuracy, and customizable field-of-view configurations.

Many measurement objects made of non-shiny material show high and relatively constant emissivity independent of their surface consistency, at least in long-wave spectral ranges. Nevertheless, many metallic and shiny materials have low emissivity at long infrared wavelengths. The low emissivity of those materials in the long wavelength infrared bandwidth results in varying and unreliable measuring results.

The spectral range of a short wavelength Xi 1M infrared camera matches most metallic material’s highest emissivity, which eases remote temperature measurement. In addition, due to Planck’s radiation law, exponentially more infrared radiation is emitted in the short wavelength range, so linear emissivity issues have less influence on the repeatability of temperature measurement results at short-wavelength. Therefore, contactless temperature measurement of shiny materials at high temperatures should always be as short-wave as possible, considering the higher temperature measuring range. In addition, these infrared cameras boast the capability to autonomously seek thermal hot spots, enhancing their utility and efficiency in various monitoring and inspection tasks. The Xi 1M infrared camera is specially designed and manufactured in Germany for these challenging industrial applications and outperforms long-wavelength infrared cameras in precision, accuracy, and repeatability.

The Xi 1M infrared camera features a mid-resolution thermal imaging capability (396 x 300 pixels), enabling it to excel in capturing temperature data across an extensive range from 450°C to 1800°C without sub-ranges. Its remarkable distance-to-spot-size ratio ensures accurate temperature measurements, even when capturing images from considerable distances. This superior ratio surpasses the optical performance of modern pyrometers, facilitating detailed monitoring of targets at significant distances. Furthermore, the motorized focus functionality allows users to precisely adjust focus remotely on their surface temperature measurement targets.
The industrial-grade and robust design of the Optris Xi 1M ensures reliability in demanding industrial environments, making it an indispensable tool for process engineers seeking accurate infrared temperature measurements in manufacturing processes. Its compact yet durable and waterproof design renders it ideal for fixed installations or mounted setups, guaranteeing durability in diverse industrial manufacturing environments.

Featuring Ethernet as its primary interface, the Optris Xi1M facilitates seamless connection to computers with a frame rate of 20 Hz for the full-size image. The USB interface, also at a frame rate of 20 Hz, is a secondary option for a sub-image of 132 x 100 pixels. Its smart autonomous operation eliminates the need for extensive software coding, enabling integration into control loops effortlessly. Moreover, the infrared camera boasts features such as automatic spot finding, direct analogue output (0/4-20mA), and compatibility with industrial fieldbus systems such as Ethernet/IP, Modbus TCP/IP, RS485, or Profinet, making it the ultimate solution for original equipment manufacturer (OEM) use. The Xi410’s autonomous operation mode at 20 Hz for a sub-image of 132 x 100 pixels further simplifies integration into machinery.

In addition, the Optris Xi1M offers access to more complex software functionalities, such as line scanning or image merging, through the PIX Connect software license. PIX Connect is indispensable for researchers seeking an affordable IR camera with a powerful software platform for thermal image processing and temperature data collection. Developer kits are also available for integrators developing application-specific software solutions.

These innovative features enhance the infrared cameras' ability to provide accurate and reliable surface temperature measurements across various applications, ranging from quality control in manufacturing processes to condition monitoring and research and development activities. The Xi 1 M’s flexibility ensures seamless integration into various industrial setups, enhancing the camera's adaptability to specific requirements. With its advanced features, the Optris Xi 1M sets a new standard for fixed-install infrared imaging, offering a cost-effective and powerful solution for diverse industrial applications.

Moreover, the infrared camera Xi 1M is compatible with an extensive range of accessories tailored for harsh environmental conditions. These accessories include a water-cooled housing, extending the operating temperature range to 250 °C. Air purges uphold a pristine lens, guaranteeing uninterrupted temperature measurement even in dusty environments. The portfolio of compatible accessories is complemented by mechanical mounting options, electrical interfaces, and connection cables, all available at an appealing price.

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 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.