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Plant Automation Volume 48, No. 4 August 2020
Circa 1973
Plant Automation
FLOW MEASUREMENT FROM OUTSIDE THE PIPE
FLANGED EXTRUDED ALUMINUM ENCLOSURE
Hoskin Scientific
Hammond Manufacturing
The 1455F flanged extruded aluminum enclosures from Hammond Manufacturing add a further variant to the company’s 1455 standard family. The 1455F has an extrusion that features a flat base with integral mounting flanges. The flanges, which extend beyond the body of the unit, have four notches to accept securing screws for mounting the units to a flat surface such as a wall, bulkhead or machine. Two sizes, 80 x 54 x 23 mm and 120 x 54 x 23 mm, are initially available in clear and black anodized finish, with additional sizes to be released over the coming months. The overall width is 77 mm, including the two mounting flanges. Both the launch sizes are designed to accept 50 mm wide, 1.6 mm thick PCBs with lengths of either 80 or 120 mm. There are two removable aluminum end panels, which are flat for easy machining for I/O components. The PCB mounts into horizontal slots in the body of the enclosure; four alternative vertical positions are available.
www.hoskin.ca
www.hammondmfg.com
INDUSTRIAL VACUUM/COMPRESSOR PUMPS
PRESSURE SENSOR WITH SWITCHING FUNCTION
KNF Neuberger
VEGA
The N 630 diaphragm vacuum/ compressor pump series from KNF is available in four versions for use in industrial coolant systems, gas recycling, gas and emissions measurement/analysis, and leak detection across a wide variety of industries, from chemical processing and energy to physics research. The series provides vacuum down to 0.74 inHg, positive pressure up to 174 psig and a flow rate up to 2.4 cfm. The diaphragm gas pumps are available either one- or two-headed and connected in series or parallel, as a vacuum pump, or as a compressor. All models come with EPDM or chemically resistant PTFE-coated diaphragms. Units handle ambient and media temperatures down to 5°C, and head water cooling systems make them suitable for use at ambient and media temperatures up to 60°C. All N 630 pumps are equipped with IP55-rated motors designed to be operated via a variable frequency drive which allows their rotational speed/performance to be set. The transfer rate is stable throughout the pressure range, enabling rapid gas compression inside containers.
The Vegabar 39 from VEGA is a universal pressure transmitter with a metallic measuring cell for measuring gases, vapours and liquids up 130°C. The pressure of the measured medium acts on a pressure measuring cell, which converts it into an electronic signal. The optional universal connection for hygiene adapters ensures reduced installation effort and leaner stock keeping, the company says. The sensor has a display with on-site operation and coloured 360° switching status indication. Unit signal outputs provide 4-20 mA in the two-wire configuration and the three-wire configuration provides PNP/NPN, 4-20 mA, IO-Link, Ex and approvals that include ATEX, IEC and cULus.
www.knf.com
www.vega.com/vegabar
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The U1000MKII-FM from Hoskin Scientific is an ultrasonic permanent/fixed clamp-on flow metering device for measuring flow rate and total flow with a volume pulse output and optional Modbus or 4-20 mA flow proportional output. The product can be used as a standalone meter or as part of an integral management system. The unit is said to be simple to install — connect power and enter the pipe inside diameter into the device, adjust the sensors and clamp-on the pipe —no specialist skills or tools required. A cost-effective alternative to traditional in-line meter installation, plus dry servicing, providing minimum downtime and maximum availability, the company says. Specifications include accuracy of ±1-3% of flow reading for >0.3 m/s, flow velocity range of 0.1 to 10 m/s and water temperature range from 0° to 85°C.
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