MEASUREMENT + INSTRUMENTATION : PRODUCTS + SERVICES
Precision current loop calibrator with HART communication
The Fluke 709 and 709H mA loop calibrators, available from Comtest, are designed to save time and produce high-quality results. The calibrators are built around a user-friendly interface with a Quick-Set rotary encoder knob. This tool reduces the time it takes to measure, or source, current and power up a loop. The protective holster fits easily into a technician’s hand and the large backlit display is easy to read, even in dark, cramped worked areas.
offers selectable capture with recording intervals of 1 to 60 seconds and a logging capacity of 9 800 records or 99 individual sessions. Each data sample contains the 709H mA measurement, all four process variables, and the standard status conditions. Key features include: - Best-in-class accuracy at 0.01% reading - Compact rugged design - Intuitive user interface with Quick-Set knob for fast setup - 24 V dc loop power with mA measure mode (-25% to 125%) - Resolution of 1 μA on mA ranges and 1 mV on volt- age ranges - Built in selectable 250 Ω resistor for HART com- munications - Simple two wire connection for all measurements - Variable step and ramp time in seconds - Valve test (source and simulate defined mA values with % keys). With a built-in HART modem the 709H can perform a range of commands. Stored configurations of HART devices in the plant enable technicians to access key device parameters, allowing for better troubleshooting, calibration and maintenance of plant assets. Fluke Calibration produces the broadest range of electrical, RF, temperature, pressure and flow calibra- tion instruments and software available. Its products are used in standards and calibration laboratories as well as industrial, plant and commercial facilities around the world.
Hart communications The 709H adds HART communi-
cations and supports a select set of the HART universal and common practice commands. This makes the 709H an affordable, compact loop calibrator and a powerful HART communication troubleshooting tool. In the com- municator mode, the user will be able to read basic de- vice information, perform diagnostic tests, and trim the mA output on most HART enabled transmitters. Previous- ly this could be done only with a dedicated communica- tor, a high-end multifunction calibrator, or a laptop com- puter with HART modem. Fluke 709H enables almost any technician to service and support HART devices. In addition, the 709H provides for logging of HART data in the field. Once recorded by the 709H in the field, the 709H/TRACK software can upload the HART config- uration of up to 20 HART devices in the plant and output data in either .csv or .txt format. Data logged mA loop measurements and HART data can be recorded from a particular transmitter for troubleshooting and loop tuning. The data log feature
The Fluke 709 and 709H mA loop calibrators are designed to be easy to use and
produce high- quality results.
For more information contact Comtest. Tel: +27 (0)10 595 1821 Email: sales@comtest.co.za Visit: www.comtest.co.za
Level monitoring in any application
The robust full-metal ultrasonic sensor delivers contin- uous non-contact level measurement and object detec- tion in any application, regardless of the environmental conditions. It is resistant to aggressive media and op- erates over a long range of up to 2 500 mm. It handles digital or analogue measured values. With IO-Link included, the measuring range can be set, and measured values and diagnostic information can be transmitted digitally. Feedback on the echo qual- ity provides for alignment of the sensor to be optimised during installation and means functional reliability can be continuously monitored. For more information contact ifm South Africa. Tel: +27 (0)12 450 0400 Email: info.za@ifm.com Visit: www.ifm.com
In tanks or silos, monitoring liquids, bulk material or in- dividual objects, level and distance measurement using ultrasound is reliable and accurate. However, even if there is no direct contact with the medium, aggressive vapours and fumes can adversely affect the functioning and life of a sensor. ifm’s new full-metal ultrasonic sen- sor is designed to withstand such harsh environments.
From the diaphragm to the connector, the sensor is completely enclosed in high-grade stainless steel. Thus, it is resistant to external influences and provides an extended service life.
ifm’s robust ultrasonic sensor, enclosed in stainless steel, can be used in harsh
environments.
20 Electricity + Control MARCH 2022
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