Electricity + Control May 2017

DRIVES, MOTORS + SWITCHGEAR SENSOR SWI CHES + TRANSDUCE S

ROUND UP

Valve feedback sensor with easy wiring End position feedback on quarter-turn actuators The unit contains two inductive sensors in a potted and sturdy housing with protection rating IP 67. It signals two end positions. It is equipped with a solenoid connection replac- ing the additional cable to the solenoid valve.

The actuator interface is optionally equipped with a standardised M20 x 1 gland.The spacious terminal cham- ber allows quick and easy wiring. Since the terminal block can be removed, no new wiring is required if the sensor is replaced. A UL approval for this product is currently in progress. Enquiries:Tel. +27 (0) 12 450 0400 or email info.za@ifm.com

Newly developed electromagnetic inductive flowmeter for conductive fluids KOBOLD, represented locally by Instrotech , has on offer a newly developed electromag- netic inductive flowmeter for conductive fluids – the model DMHwith a standard accuracy of ±0,3% of reading stability of zero. It is used specifically for the measurement and moni- toring of the volume flow rate of acid or alkaline fluids, potable (drinking) water, waste water, pulps, pastes and other electrically conductive materials, without loss of pressure. When an electrically conductive medium passes through a directional magnetic field, a voltage is induced in accordance with Faraday’s Law of Induction. The size of this measurement voltage is proportional to the mean rate of flow and consequently also to the volume flow rate. A flowmeter consists of a sensor that picks up the measuring signal generated from the induced voltage, and a transducer that converts this signal into a standardised output signal (4-20 mA or pulses).The measurement transducer can be affixed to the sensor or mounted

separately. Pressure, temperature, density and viscosity do not affect the volume measurement. Solid fractions and gas bubbles should be avoided. The microprocessor-controlled converter UMF2 guaran- tees the highest of accuracies and with its alpha-numeric backlit LCD terminal, six keys, plain text response, and plausibility check of entries, is easy to operate. Empty-pipe detection, coil current monitoring, and plain text error messages guarantee full control over sensor and measuring point at any time. Pulse, status, and current out- puts as well as HART communication are standard features, all of them electrically isolated. Enquiries:Tel. +27 (0) 10 595 1831 or email sales@instrotech.co.za

One sensing range for all metals Kplus sensors have the same sensing range for all types of metals.They are for example perfectly suited for the detection of aluminium, where conventional sensors show a

considerably reduced sensing range. The high switching frequencies enable the monitoring of fast changing switching states. The resistant stainless steel sleeve allows reliable use in oil and coolant applications.The wide temperature range as well as the high protection ratings enable universal use of the new Kplus sensors. Enquiries:Tel: +27 (0) 12 450 0400 or email info.za@ifm.com

May ‘17 Electricity+Control

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