E. Preston (Electrical) Ltd

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.

Enquiry Form: http://www.epreston.co.uk/enquiries.html

Home Page: http://www.epreston.co.uk/epblog/

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)

Enquiry Form: http://www.epreston.co.uk/enquiries.html

Home Page: http://www.epreston.co.uk/epblog/

Finder has announced the launch of a new series of safety relays that have been specifically designed to meet the increasingly stringent safety standards now being imposed on designers and manufacturers of electrical systems. They are particularly suited to applications such as plant, process and machine guarding, safety circuits, emergency stop circuits and critical monitoring circuits.

The 50 Series relays are pin-compatible with the existing 40 Series, and feature forcibly guided contacts that enable positive monitoring of the contact state to comply with EN 50205 type B. They have also been designed to meet the requirements of IEC 62061 (2005): Safety of machinery – Functional safety of safety-related electrical, electronic and programmable electronic control systems, and ISO 13849-1: Safety of machinery – Safety-related parts of machinery.  A high physical separation ensures a minimum of 2.5kV insulation between adjacent contacts

The relays are rated for a maximum contact current of 8A and for DC coil voltages ranging from 5V to 125V, thus providing considerable flexibility for circuit designers.

Enquiry Form: http://www.epreston.co.uk/enquiries.html

Home Page: http://www.epreston.co.uk/epblog/