E. Preston (Electrical) Ltd

The 500 Series is broad portfolio of air/gas, liquid and surface temperature probes that use Honeywell’s NTC (Negative Temperature Coefficient) thermistors.

Thermistors can be very effective in sensing temperatures of gases, liquids or solids because of their enhanced sensitivity. These small, easy to install probe assemblies support and position the thermistor elements within the media to be monitored as well as protect the thermistors against damage in use or handling. The assemblies also help direct thermal or fluid flow evenly across the thermistors for accurate temperature sensing.

The enhanced reliability, precision and stability of the 500 Series products allow the customer greater flexibility in temperature monitoring and control. The wide operating
temperature range is -60 °C to 300 °C [-76 °F to 572 °F] provides application flexibility.

The 500 Series is available in a wide variety of housing styles and materials, R-T (Resistance-Temperature) curves, mounting methods, mechanical interface, electrical interface and connector types to meet most applications.

In addition to custom configurations, a variety of existing designs is available.

Honeywell also offers RTD (Resistance Temperature Detector) technology that may be packaged into probe assemblies for similar applications that may require an RTD linear output instead of an NTC thermistor output.

FEATURES
• Air/gas, surface, immersion and liquid level
• NTC type output
• Enhanced sensitivity
• Small package size
• Easy to install
• Enhanced reliability
• Enhanced accuracy
• Enhanced stability/low drift
• Wide operating temperature range
• Wide variety of probe assembly styles
• Custom configurations available
• RTD linear output available

POTENTIAL APPLICATIONS
• Industrial: HVAC, refrigeration, office automation, air compressors, industrial ovens and  ranges, hydraulic systems, processing and packaging, power generation
• Transportation: heavy duty or sport vehicle engine oil, air inlet, fuel, coolant or surface temperature sensing
• Aviation: engine bleed air or environmental control systems
• Weather stations

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Arcolectric have introduced the Temperature Micro-Logger, an intelligent panel mounted device that monitors and stores temperatures for downloading over a wireless data link.
 
The device is ideal for applications where monitoring process temperature is important, particularly within the food preparation industry. It is especially useful for food storage, retail displays and prepared food outlets where accurate record keeping is essential. The Temperature Micro-Logger adds advanced logging functionality to a food storage unit for little cost increase, much smaller than would be expected by the end user. 

The Micro-Logger provides a clear and simple visual indication of the temperature conditions within the piece of equipment, utilising a simple go/no-go display principal. Blue LED illumination indicates when process temperatures are within safe limits. The display changes to a Red indication if the safe temperature limits are ever exceeded. Temperature measurement range can be set between -30ºC and +80ºC.
 
Designed for quick installation, the Micro-Logger has an industry standard snap-in profile, with a temperature sensor on flying leads for convenient remote mounting. The product can directly replace the mains neon indicator usually found on freezers, refrigeration and cold storage equipment, providing a fast, cost-effective upgrade of non-compliant or un-monitored equipment.
 
The temperature data is logged into an internal non-volatile memory at user programmable time intervals ranging from 1 second to 12 hours. Up to 14,000 measurements can be stored. The data can be downloaded via the built-in wireless infrared communication port using a PDA, Notebook or laptop computer and is time and date stamped, simplifying reporting and providing documented evidence of historical storage temperatures.
 
Retailers and producers need to ensure food products are kept at the recommended safe temperatures, and for self-protection, adequate temperature records must be kept. Complying with the relevant food storage regulations does not lay with the equipment manufacturer; it is the responsibility of the equipment end user. The addition of the Micro-logger to an item of food storage equipment enables manufacturers to supply added value to end users, and a facility to contribute to complying with the regulations.
 
The Micro-Logger carries UL, CE and FCC approvals

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

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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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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/