Amelec Instruments
Originally formed in February 1975, AMELEC remains a wholly owned British manufacturing and design company. The instrumentation that AMELEC offers to the market place is based on analogue techniques, using readily available discrete components.
Therefore all the monitoring is in real time. The instruments contain no time dependent or microprocessor circuitry and are suitable for use in SIL level 1, 2 or 3 rated safety systems/loops & are covered up to 10 year warranty. With a variety of process control systems available, it is often necessary to convert an input signal into a format that your system will accept.
The design & everyday application engineering principles used in the instruments are based on well tried and proven in use for over 40 years in linear operational and amplifier circuitry. Each unique, custom built analogue instrument can be considered as a number of functional blocks assembled together to produce a specific process control function.
A signal conditioner / transmitter would comprise of an input circuit, a modulator / demodulator stage, an output circuit and the power supply/regulation circuitry. A trip amplifier might use the same input circuit, but this time a comparator and relay driver stage plus the power supply / regulation circuitry is used.
By combining these functional blocks together we have produced a comprehensive range of trip amplifiers, transmitters, signal converters / isolators, combined trip transmitters, arithmetic (add / subtract / select / multiply / divide) units, power supplies, strain gauge, frequency & AC I/V transducers. On top of all that, we also manufacture hart compatible units.
The circuit building blocks we use today are essentially the same as the ones we have used for the last 35 years and still providing reliable instrumentation for system, maintenance, reactive engineers and more. Signal conditioners take signals from an assortment of field instruments such as thermocouples and RTDs and convert those signals into any of several standard instrument signals (1…5V, 4…20 mA, etc.).
Signal conditioners are also beneficial to the accurate transfer of these signals, isolation and the elimination of ground loops. To confirm that the instruments are compliant with the latest standards, AMELEC have submitted a range of instruments with all the various circuit blocks in them to the several test houses.
The reference / standards used at the test houses have been:
CEGB’s EES1989
BS6667
IEC801
IEC61000-4-3.
All instrumentation produced by AMELEC is controlled under our Lloyds approved ISO 9001:2008 Quality system.
Filter products and services
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Process Signal Converter - AEC230
Our AEC230 PROCESS SIGNAL CONVERTER - with a true universal AC/DC supply, voltage range 21V through 265V AC or DC. Minor adjustments can be made to the calibration of this device via the zero and span potentiometers easily accessible on the front panels.
As standard the input is passive and the output is active. However, the output can be configured on request to be passive if required (Current SINK ports, max 30Vdc external) The input, output and supply are galvanically isolated from each other and can either be the same or of different value!
For active input – check out our AEC237 2 WIRE SIGNAL TRANSMITTER.
All AMELEC manufactured instruments are supplied fully calibrated, traceable to national standards.
We also can provide a HART compatible version of this model.
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Process Trip Amplifier with Additional Latching Relays & Remote Reset - ADT131KLX-4
Our ADT131KLX-4 Process Trip Amplifier with additional 3 x Latching Relays and remote reset facility. It is suitable for use in SIL1, SIL2 & SIL3 rated safety loop applications.
This unit includes RFI Protection to IEC61000-4-3 (<10V/m) and is suitable for any Process inputs.
More techinal specifications can be found in the datasheet below and the drawings & dimensions are also available.
Specification available: Process Trip Amplifier with Additional Latching Relays & Remote Reset - ADT131KLX-4.png (PNG, 601.0KB)Request a Quote Supplied by Amelec Instruments -
Pulse Count Trip Amplifier - ADT181KXT
Our ADT181KXT is a Pulse Count Trip Amplifier suitable for SIL1, SIL2 and SIL3 (IEC61508-2)) rated safety loop applications with a supply voltage of 24Vdc (Other ranges available on request). It also has RFI Protection to IEC61000-4-3 (<10V/m).
More techinal specifications can be found in the datasheet below and the drawings & dimensions are also available.
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Pump/Level Control Trip Amplifier - ADT135
Our ADT135 is Pump/Level Control Trip Amplifier that is suitable for SIL1, SIL2 and SIL3 rated safety loop applications and any process input.
This unit has an optional RFI Protection to IEC61000-4-3 (<10V/m) available on request. Digital indication option also available on request.
More techinal specifications can be found in the datasheet below and the drawings & dimensions are also available.
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Pump/Level Control Trip Amplifier with Display- ADT135DI
Our ADT135DI is Pump/Level Control Trip Amplifier with Display that is suitable for SIL1, SIL2 and SIL3 rated safety loop applications and any process input.
This unit has an optional RFI Protection to IEC61000-4-3 (<10V/m) available on request.
More techinal specifications can be found in the datasheet below and the drawings & dimensions are also available
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Rochester RIS SC-8006 Replacement 24Vdc Rack Power Supply Unit - AHP991-RIS-8006
Our AHP991-RIS-8006 is a Rochester RIS SC-8006 Replacement 24Vdc Rack Power Supply Unit is suitable for use with Rochester (RIS) 3U High 19" rack mounted instrumentation.
We also calibrate and manufacture a high current power supply unit with supply of 24Vdc or 115/230Vac (both ±20%). View more details.
More technial specifications can be found in the datasheet/drawings & dimensions below.
Specification available: Rochester RIS SC-8006 Replacement 24Vdc Rack Power Supply Unit - AHP991-RIS-8006.png (PNG, 563.0KB)Request a Quote Supplied by Amelec Instruments -
RTD Signal Splitter- AEC221
Our AEC221 RTD signal transmitter/splitter is easily suited to handle combinations of process inputs & outputs.
The input can be any 2 or 3 wire RTD or Resistance.
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Slim Vertical Bargraph Indicator - APM489-BAR-Slim-V
The APM489-BAR-Slim-V is a Slim Bargraph Indicator which is a non-microprocessor based display unit suitable for most process signals. (Horizontale mouting option available on request)
It has a 101 dash red LED high-brightness standard display of 0-100%. (other scaling available on request)
The standard supply options are 5V, 12V and 24Vdc.
IP64/IP65 options available on request.
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Slim Vertical Bargraph Indicator with Alarm Trip Points - APM489-BAR-ALM
The APM489-BAR-ALM is a Slim Bargraph Indicator with Alarm Trip Points which is a non-microprocessor based display unit suitable for most process signals.(Horizontale mouting option available on request)
It has a 101 dash Red or Green LED high-brightness standard display of 0-100% with 8 level brightness control and up to 4 alarm set points.(other scaling available on request)
The standard supply options are 10-28Vdc / 86-264Vac.
Specification available: APM489-BAR-ALM Bargraph Indicator with Four Trip Set Points.png (PNG, 711.0KB)Request a Quote Supplied by Amelec Instruments -
Slim Vertical Bargraph Indicator with Dim - APM489-BAR-DIM
The APM489-BAR-DIM is a Slim Bargraph Indicator with Dim which is a non-microprocessor based display unit suitable for most process signals.(Horizontale mouting option available on request)
It has a 101 dash Red or Green LED high-brightness standard display of 0-100% with 8 level brightness control. (other scaling available on request)
The standard supply options are 10-28Vdc / 86-264Vac.
Up to four alarm set point option available via APM489-BAR-ALM.
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