Electricity + Control May 2017

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ROUND UP DRIVES, MOTORS + SWITCHGEAR SENSOR SWI CHES + TRANSDUCE S
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
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
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 or
email
29 May ‘17 Electricity+Control