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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AC/DC Thermocouple Transmitter - AEC210
The AEC210 AC/DC Thermocouple Transmitters are customised for use with any thermocouple type and supplied calibrated over the temperature range to suit your application.
The AEC series instrumentation has a true universal 21V through to 256V AC/DC supply as standard.
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AC Moving Iron Ammeters - APM489
Our AC Moving Iron Ammeters can handle various types of input ranges and the display ranges can be customised to your needs.
Our short-scale (90° sweep) & long-scale (240° sweep) moving coil ammeters are very popular in various sectors
They have a jewel & pivot movement as standard to ensure accuracy and reliability.
They are available in bezel sizes of 48mm, 72mm & 96mm.
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AC Voltage Transducer - AEP452EP/AEP454EP
Our AEP452EP AC Voltage Transducer is perfectly suited for any application where the AC signal is required to be isolated, converted or transmitted.
Other intermediate ranges are available on request.
It also has a 15 turn potentiometer, with a response time less than <400mS and has a true universal AC/DC supply, voltage range 21V through 265V AC or DC.
We also manufacture a dual output version as well: AEP454EP.
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Air Ingress Timer - AGS1131
Our AGS1131 is an Air Ingress Timer suitable for air ingress timing and has a long battery life.
More techinal specifications can be found in the datasheet below and the drawings & dimensions are also available.
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Arithmetic units & PSU - ACC Series
View our informative technical factsheet for our ACC arithmetic units & PSU's.
The input(s), contacts, supply and earth are fully isolated. Each unit has its own power pack.
All arithmetic units have input buffer amplifiers which include scaling and bias (span and zero) adjustments.
This facilitates conversion into engineering units and performance of several functions within one unit.
Included in the range are both root and linear input integrators.
Various application notes are available on request covering subjects such as Mass Flow, Long Range Flow measurement and Sequencing of signals.
Input span of all units is typically 400mV and input conditioning is adjusted accordingly.
Another standard feature is that the optical drive is up to 20mA into a 20V loop (current) and up to 10V at up to 20mA loading (voltage).
If you are looking for a more specific model, i.e. ACC374X, take a look at our Datasheet Centre.
If you have any queries, do get in touch.
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Arithmetic units & PSU - ADC/ADP/AGS Series
View our informative technical table for our ADC/ADP/AGS arithmetic units & PSU's.
The input(s), contacts, supply and earth are fully isolated.
Whether the function is scale, bias, sqaure root extractor or liner integrator, take a look below.
Another standard feature is that the optical drive is up to 20mA into a 20V loop (current) and up to 10V at up to 20mA loading (voltage).
In you are looking for specific models, head over to our Datasheet Centre.
If you have any queries please email us.
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Arithmetic units & PSU - AHC Series
View our informative technical factsheet for our AHC arithmetic units & PSU's.
The input(s), contacts, supply and earth are fully isolated.
Whether the function is scale, High or Low select, multiply/divide, sqaure root extractor or liner integrator, take a look below.
Another standard feature is that the optical drive is up to 20mA into a 20V loop (current) and up to 10V at up to 20mA loading (voltage).
If you are looking for a specific model, take a look at our Datasheet Centre.
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Compact 1/16 DIN 5 Digit Process Panel Meter/Controller - APM244-5
Our APM244-5 is a 5 digit red LED high-brightness display and measures any linear signal 0~10V and 0(4)~20mA.
The supply is 24Vdc and is front panel mounted as standard, with DIN rail/ Surface mount options available.
One external control input can be programmed to be Relative PV (Tare) / PV Hold / Maximum or Minimum Hold / DI (remote monitoring)
Other input ranges available on request.
The APM244-5-AO-2RL option provides 2 Trip Relays and an Analogue Output.
The 2 Trip Relays that can be programmed individually to be:
- High / Low / High latch / Low latch / Energised with
- Start delay / Hysteresis / Energised & De-energised delay functions or to be remote control.
It alllows for versatile functions such as control, alarm, re-transmission and communication for use in a wide range of industrial process control applications.
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Compact DC Current Transducer- ASC110-S
Our ASC110-S is a compact size DC current transducer that connects directly to PLC and provides easy installation.
It allows for non-intrusive monitoring and is loop powered in order to reduce wiring.
Perfect in use for high DC current monitoring.
The current input can be perfectly suited to your application as we can provide various range from ±50mA up to ±500mA.
Bi-Directional output as standard, Unidirectional output available on request.
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Contact Closure Signal Generator - AEC230X
Our AEC230X is a Contact Closure Signal Generator with a true universal AC/DC supply voltage range 21V through 265V AC or DC and is suitable for a combination of Process Inputs & Outputs.
4 or 20mA is the factory default input range. Standard output signal are 4-20mA (other output ranges available on request)
Please click here to view/download the AEC230X Signal Booster datasheet.
Please click here to view/download the AEC230X Current Generator datasheet.
We also can provide a HART compatible version of this model
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