E. Preston (Electrical) Ltd

The new CT-S range is ABB’s latest development of universal time relays. This range comprises of 13 single-function devices and 8 multifunction timers with up to 11 functions, offering a high flexibility in operation. All devices have adjustable time delays from 0.05 seconds to 300 hours in 10 time ranges. The new CT-S range is prepared for all markets world wide. The products are cULus 508, CB scheme, CCC, GL, RMRS, GOST approved and CE and C-Tick marked.

Characteristics of the CT-S range
• Control supply voltages:
     o Multi ranges: 24…48 V DC, 24…240 V AC
     o Wide range: 24…240 V AC/DC
     o Single range: 380…440 V AC
• Devices with:
     o 1 or 2 c/o contacts
     o 2nd c/o contact can be selected as instantaneous contact1)
• Remote potentiometer connection1)
• Control input with volt-free or voltage-related triggering e.g. to start timing, pause timing
• Sealable transparent cover for protection against unauthorized changes of time and threshold values
• Integrated marker label

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Finder has announced the launch of the 93.21 series multifunction timer socket, for use with the 34 series electromechanical and solid-state relays. The sockets are aimed at panel builders, systems integrators, OEMs and installers of control systems for machines and processes, and also for applications in building management systems (BMS). They are particularly suitable for use where space constraints are a major consideration, or where rapid output switching and long operational life are required.

The ultra slim sockets are only 6.2mm in width, making them ideal for use in systems where the available mounting space is minimal. Their multifunction and multirange capabilities, along with the ability to accept either plug-in electromechanical or plug-in solid-state relays, means that a single socket model is suitable for a wide range of applications, with the added benefit that the switching element is easily replaceable.

The timer sockets feature 4 time ranges with intervals ranging from 0.1 – 3s up to 0.3 – 6 hours, and 4 selectable timing functions – ON delay; ON pulse; Symmetrical recycling with ON start; and fixed pulse delayed. Precision of regulation over the entire scale is specified as ±5%, and maximum switching capacity is 6A.

The 93 series timer sockets operate at a DC or AC supply voltage in the range 12 – 24V. Both screw and screwless termination options are available for flexibility in integrating with both types of wiring system, and a tamper proof setting mechanism avoids accidental maladjustment. The sockets can be used with 20 way jumper bars, which helps to save time in wiring common connections.

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Finder announces a new generation of its 14 Series electronic staircase timers, which have been designed for energy saving control of lighting in areas of temporary occupation. The latest models feature microprocessor control, and are targeted at lighting applications in stairwells, corridors, washrooms, storerooms and similar areas that only require illumination for short periods of time.

Designers, contractors and installers of lighting in commercial and residential property are continually looking for ways to reduce energy consumption by eliminating wasteful lighting in unoccupied areas, while addressing the growing need to illuminate more public areas for security and safety reasons in an economical way. Staircase timers such as the 14 series offer a cost-effective solution that is simple to implement even in small installations.

The 14.01 timer is a multi-function unit, while the 14.71 is a single function version. Both models have an on period that is adjustable between 30s and 20 minutes, so that a single timer is suitable for wide range of installations. This flexibility of operation means that specification is simplified and inventory levels can be kept to a minimum. A further single function model, 14.81, offers wiring compatibility with earlier mechanical models.

All the new timers feature zero-crossing load switching, which enables the switching of higher lamp loads and also offers the benefits of longer lamp and unit life and reduced RF interference. A switch-off early warning function on the 14.01 gives a user who is still in the area time to re-activate the timer before the light is turned off.

Multi-function features on the 14.01, accessed via a simple rotary function selector, include timed control with or without manual override, early warning, standard on/off, permanent on and maintenance function with extended 60 minute on time.

Each timer can be used with up to 30 illuminated pushbutton actuators, offering local control over a wide area and thus giving the user maximum opportunity to re-activate the timer before being plunged into darkness: this enhances safety, and is especially beneficial in stairwells.

All the 14 Series timers are housed in a 35mm rail mounting enclosure that is 17.5mm wide, and have a timing adjustment suitable for standard consumer unit.

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Finder has announced an update to its 80 series timers, which now provide improvements in functionality, multiple supply voltages, a wide choice of time ranges and greater ease of use.

The 80 series timers find uses in applications that include process timing, material handling, access technology, and industrial equipment such as elevators, environmental, washing and shot blasting equipment. Additionally they are used by OEMS for functional timing in mobile, portable and battery powered equipment and testers.

In the latest version of the 80 series timers, the range and function selectors, the timing trimmer and the rail mounting clip have all been modified to accept either cross head or flat blade screwdrivers, allowing for easier setting and mounting. Snap-on marker tags are now mounted on the front of the timers, which can be sheet printed automatically for speed and clarity. The start signal can now also switch a separate load, giving the possibility of reducing the need for additional components

The time range scale can now be changed without the need to remove the power supply, allowing greater flexibility for timing adjustment without any disruption of the circuit.

The 80 series timers are housed in compact packages measuring only 17.5mm wide by 57mm high. All timers in the range are now multi-voltage, which means that fewer variants need to be stocked. The timers run from either 12V to 240V AC or DC – for the multi function and recycler versions – or 24V to 240V AC/DC for all other variants. The 12V to 240V type is suitable for use in battery-powered systems.

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CAL Controls’ have introduced a new range of digital thermostats to their portfolio of temperature and process control products. In-line with CALs philosophy of providing affordable products that incorporate the latest technology, the thermostat range is targeted at heating and refrigeration applications where simple ON/OFF temperature control is required.

The thermostats are front-panel mounted (29 x 71mm cut-out) and have a large clear LED display displaying the current temperature. NTC or PTC sensor input options are available on most products with J-type thermocouple and PT100 also supported. The control outputs are 8A relay and for applications with larger loads, 16A relay versions are available.

Thermostat brochure.pdf

Control set-point and other parameter settings can be entered via large tactile buttons on the fascia. Once set, a menu lockout feature can be enabled to ensure settings are not inadvertently changed.

A defrost function is integrated within some models. Various defrost methods are supported, such as manual/auto timed defrost or a second sensor input which monitors the evaporator temperature and triggers the defrost function when needed.

Full scale high/low, deviation high/low or band alarms can be configured on the device. These can be visual, audible or a relay output depending on the model type selected.

In addition to 230V AC, there are 12 and 24 VAC/DC low control voltage options.

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CAL Controls are a major supplier of temperature and process control products to manufacturing, scientific and process industries.  Since CAL was established over 40 years ago, the company has grown into a market leader by providing affordable products that incorporate the latest technology.

http://www.cal-controls.co.uk/

CAL’s range of easy-to-use digital thermostats are ideal for heating and refrigeration applications where ON/OFF control is required.

Digital Thermostats
  • 34 x 77mm Fascia (29 x 71mm cut-out)
  • J-type thermocouple, PT100 or PTC/NTC inputs
  • On-off control
  • Single or dual outputs
Thermostat brochure.pdf

Chiller & Defrost Thermostats
  • 34 x 77mm Fascia (29 x 71mm cut-out)
  • Single or dual PTC/NTC inputs
  • On-off control
  • Various defrost options depending on model
Thermostat brochure.pdf

Timer
  • 34 x 77mm Fascia (29 x 71mm cut-out)
  • Delay & pulse control modes
  • HH:MM or MM:SS time settings
  • Start/stop pushbutton or externa control imput
  • Upper  lower setting limits
  • Audible warning tones - 16 different tones
  • Single output for control
Thermostat brochure.pdf

Indicators
  • 34 x 77mm Fascia (29 x 71mm cut-out)
  • NTC temperature or analogue process units
  • 4-digits yellow LED display
  • Maximum & minimum registered values
  • Parameter access protection
  • Range can be calibrated to suit oricess signals (EI141)
Thermostat brochure.pdf

ACCESSORIES
Sensors                              Transformer
PTC probe (air/liquid)          230v - 12v transformer
NTC probe (air/liquid)

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New to the Finder range of energy consumption meters is the three-phase 7E.36 Series, which includes single and dual-tariff kWh models for the measurement, recording and display of power consumption in individual sub-circuits at current levels up to 65A.

The meters are particularly applicable where there is a statutory need for compliance with the EU Measuring Instrument Directive (MID) 2004/22/EG which comes into force in October 2006. The current pressure to reduce energy consumption is also driving the need for accurate monitoring and measurement in specific areas.

The 7E.36 Series meters provide a compact, accurate and easily-installed solution to metering three-phase energy consumption, and are ideally suited for use by manufacturers and installers of machinery and equipment, control systems manufacturers, contractors, site service engineers and designers of building management systems (BMS). Typical areas of use include industrial and commercial installations, test cells, machines, control cabinets and switchboards.

Type 7E.36.8.400.0000 is a single-tariff 3-phase meter, and Type 7E.36.8.400.0002 is a dual-tariff version for use with standard and economy tariff supplies. Both meters are specified for a maximum current rating of 65A, and are housed in a compact 70mm wide enclosure that can be surface mounted or fitted to a 35mm DIN rail, allowing them to be installed in confined spaces or mounted on standard sub distribution boards.

The meters feature 4mm high, 7-digit display(s) including a red decimal digit, to provide an easy-to-read display with a maximum totalising count of 999,999.9kWh. A high resolution pulsed open-collector output to DIN 43864 provides a link to BMS or other types of remote monitoring system. A variable rate pulsed red LED indicator offers a rapid visual indication when abnormal operation is occurring, for example due to phase loss or inversion. Terminal covers are also available to enable a tamper-proof seal to be fitted.

The 7E.36 Series is compliant with EN 62053-21 and prEN 50470 as well as with the EU MID 2004/22/EG, and is certified by PTB (Physikalisch-Technischen Bundesanstalt). Accuracy is specified to Class B and protection to Class II.

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Whether you’re dealing with simple digital values or complex parameter settings it’s vital you get the correct information. Crouzet’s Millenium II+ Logic Controller now comes with two optional ‘add-on’ displays depending on the complexity of data you require.

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