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Novotechnik-Transducers for the Heavy-Duty Segment

Rugged, Reliable and, if necessary, also Redundant.

Precision Rotary Transducers for the Heavy-Duty Segment. Automation technology is also used in harsh environmental conditions.

Typical examples can be found in driven machines in road construction and in agriculture and forestry, on moving platforms, in container terminals and in harbour cranes.

The sensors used here must meet special requirements. Sufficient accuracy alone is not enough. A high level of reliability must be ensured even with heavy vibrations, moisture and extreme temperature fluctuations. And the understandable desire for “affordable” technology also plays a role here.

Conductive plastic potentiometers available today in surprisingly rugged designs are therefore usually unbeatable in applications of this kind. With the conductive plastic potentiometers of the IPX 7900 series (picture), Novotechnik has expanded its product line with rugged rotary transducers specially developed for use under extreme environmental conditions, e.g. for mobile applications. A typical application is, for example, actual value detection on the steered axle of electrohydraulic steering systems

The heavy-duty potentiometers are available for detection ranges of 120°, 200° and 350° and offer unrestricted continuous rotation. All variants have either a single-channel or a two-channel, redundant design with two separate connections. As a result, the requirements as per SIL 3 are met in accordance with
IEC 61508.
The angle sensors also meet the requirements of the protection type IP67 (plug variant M12) or IP69k (PG screwed cable gland with cable connection). They are impervious to dust, dirt or moisture. As potentiometers operate according to the Rugged, Reliable and, if necessary, also Redundant Precision Rotary Transducers for the Heavy-Duty Segment
voltage divider principle, temperature fluctuations also have no effect on the measuring accuracy.

Even with heavy vibrations, the expected service life of the rotary sensors is
over 100 million movements. A rugged all-metal housing and a positive-locking cover
protect the conductive plastic resistance tip and the extremely durable multi-finger
wiper. The solid yet compact design with dimensions of 79 x 35 mm² enables direct
attachment to the axle without additional protective measures. The sturdy, one-piece
shaft with dual ball-bearing mounting with a large bearing spacing and a 13 mm diameter
enables direct steering via a strong lever or driver.

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Veeder Root-Meter Register

7887 Meter Register:
Designed for maximum readability – engineered for extra life in fuel deliveries and, fluid flow transactions of all kinds.
1. New crisp, high visibility digital display for optimum readability in all ambient lighting.
2. Latest technology, modern materials give maximum dependability at speeds to 250 rpm of right wheel.
3. Positive action knob reset.
4. Built-in precision totalizer accumulates up to 99,999,999 units.
5. Acetal resin components for smooth operation and extra long life.
6. Fits all popular flow meters.

Description:
The Meter Register is the outstanding choice for recording and displaying delivery data in a wide variety of industries. In the petroleum refining and distribution field, it is used from the well to pipelines and storage centers, then to gasoline and fuel oil delivery trucks. In the chemical processing field, it can be used for displaying totals during mixing and batching operations.

The 7887 Meter Register totalizes and displays high speed deliveries and transactions in large easy-to-read figures. Ideal for increased efficiency in all kinds of liquid inventory and delivery operations. Utilizing a geared drive available in a wide selection of ratios, the Meter Register records in practically any unit of liquid measure – gallons, liters, barrels, etc. – as well as non-liquid units.

Special optional adaptors are available to mate the Meter Register with all standard meters and pumps. It also easily combines with Veeder-Root Meter Preset and Printer to form a complete count, control and print system.

Finished in corrosion resistant epoxy, the sturdy housing protects the Meter Register in demanding environments and extremes in weather.

Example: Veeder-Root 7887 Meter Register & 7889 Preset fitted to TCS-700 Series Flowmeter.

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TWK-Inductive Linear Transducers

Inductive Linear Transducers for engineering and instrumentation.

The half-bridge technology for 1 to 360 mm stroke. The wide range of inductive linear transducers includes items with 10, 12 and 25 mm outside diameter and for measuring ranges from 1 to 360 mm. The smaller IW 10 and IW 120 series require external electronic modules for excitation and signal conditioning. IW 250 series with 25 mm housings have integral electronics consisting of oscillator, demodulater and amplifier. Analogue output signals are either 0(4) to 20 mA, 0 to 10 VDC or ± 10 VDC for full range or calibrated strokes. The transducers are completely potted to meet protection grades up to IP 68. Electrical connection is made either by leads, plug and socket or through cable glands. Various mechanical configurations are available to suit specific mounting conditions.

The IW 260 displacement transducers operate according to the new principle of fractional inductivity allotment within the hollow coil. Depending on the position of the core the inductivity changes within the corresponding coil section. This kind of layout provides for more position data than the classical half-bridge or LVDT configuration. An integral electronic circuit transforms these data into a signal proportional to the displacement of the plunger core.

The electronic circuit contains an oscillator, a demodulator, an amplifier and in some cases a current output source. Its SMD-design is short-circuit proof and protected against reverse polarity. The sensor system is completely sealed within a non-corrosive steel case to ensure positive protection against vibration, shock, humidity, oil and corrosive matter.

The new principle of fractional inductivity allotment as described above brings about an outstanding increase of the measuring stroke. In comparison to the IW 250 model the useful range of the IW 260 model increases by 70 to 100% based on the same length of the case.

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Eagle Signal-Max Count

Introducing: The New Max Count  Electronic Preset Timer/Counter.

The latest introduction into Eagle Signal’s line of electronic timers and counters is the New Max Count Series is a next-generation electronic preset counter providing the ultimate in flexibility, speed and ease of use. The New Max features a large 8-digit Alpha-Numeric LED display that allows programming setup to be done using easy-to-understand, text — not confusing coded numerals.

Communications options for either wired RS 485 Modbus, Ethernet or wireless allows remote access to “real-time” data and operating variables.

Uni-directional or bi-directional counting is accurately  managed at speeds to 40kHz.  This makes this new generation of counters ideal for applications requiring hi-speed, high-resolution measurements for positioning, cut-to-length, batching and packaging. Programmable Correction-Constant and Decimal Point features let the LED display provide its readout in the appropriate engineering unit and resolution.

Eagle Signal, “the premier name in timers” is the reputable leader in electronic and electromechanical timer products, including preset, elapsed time (also known as time totalizer or hour-meter), reset timer, repeat cycle timer, sequencers and related accessories for rugged and reliable production monitoring of industrial manufacturing applications for over 70 years. Ranging from our popular electromechanical timer products to powerful microprocessor-based control timers, Eagle Signal offers a full range of panel mount timers as well as time delay and general purpose relays.

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