Lee-Dickens Ltd

Signal Conditioning

Lee-Dickens Ltd supplies a fantastic range of top quality signal conditioning equipment. Examples of the range include:

• IEC61508 (SIL)
• Trip Amplifiers
• Isolating Signal Converters/ Non-isolating Signal Converters
• Integrators and Frequency Converters
• Maths Functions Including Linearisers
• Programmable Signal Converters
• Power Supplies
• Multiplexed Signal Converters
• Power Measurement
• Temperature Converters
• Controllers
• Eurocard Instrument Housing
• NAMUR NE43
• VA Flowmeter Alarm Units

Full product details are available to view online and all items can be ordered via our easy to use checkout system. Please contact us at Lee-Dickens Ltd if you cannot find what you are looking for and we will be happy to assist.

Telemetry & SCADA Systems

We also offer high performance telemetry software. The range features:

• Sitewatch 2000 – PC-based Telemetry Software: this high-performance software package has been expertly designed and created for users to remotely monitor and control equipment using the Public Switched Telephone Network (PSTN) as the communications medium. The software runs under Windows 95/98 or Windows NT.
• Sitewatch – SCADA: this high-performance, high availability, Supervisory Control and Data Acquisition (SCADA) software package runs on the Microsoft Windows operating system.
• Sitewatch NX – SCADA: this software runs on various architecture platforms such as SUN Sparc, DEC Alpha, X-Terminals etc.

Sensors

Our range of sensors includes:

• Relative Humidity and Temperature Sensors: the range includes various capacitive sensors, industrial RH/ temperature probe and transmitters, environmental RH/ temperature probe and transmitters, intrinsically safe RH transmitters, handheld and OEM probes, and wall mounting probe with remote head.
• Temperature Sensors: this range features various accessories, platinum resistance thermometers, and thermocouples.
• Level Sensors: we supply two wire capacitance level probes.

Full product descriptions are available to view online with detailed specifications and mechanical details. Please contact us for further information and/or advice.

Point to Point Telemetry System

SiteLINK II is our high-performance modular point-to-point telemetry system. It has been designed to transfer digital, pulse and analogue signals between two locations via a uni-directional or bi-directional serial data link using radia, fibre optics, microwave or dedicated lines as the communication media. The system features two main parts: an Instation and an Outstation and the range of modules features Master and Slave, Input and Output modules that can be linked on a Local Area Network (LAN) at both the Instation and the Outstation to provide the required input/output capacity.

Digital Indicators

We offer an extensive selection of high quality digital indicators. Examples of the range include:

• Process inputs 3 and ½ digit, programmable, small case size
• Process inputs, 5 digit, programmable, transducer excitation (with relay alarm option)
• T/C and RTD inputs, 5 digit, programmable, transducer excitation, relay alarm option, retransmission option.
• Load cell inputs, 5 digit, programmable, transducer excitation, relay alarm option
• AC voltage inputs 3 and ½ non-processor based, RMS input option, relay alarm option, retransmission option.
• AC current inputs, 3 and ½ digit, non-processor based, RMS input option, relay alarm option, retransmission option

Please visit our website to view the range in full.

Design & Development

At Lee Dickens Ltd we have more than 40 years’ experience in the industry which enables us to provide outstanding project solutions for industrial, aeronautical and process control applications. We provide complete project management and work to specific project procedures and evaluation systems to ensure that projects are completed to the highest standards, on time and within budget. Our design team uses state-of-the-art CAD facilities to create excellent solutions. Hardware and Software development is carried out in accordance with our Design Engineering Practices and Procedures Manual which is approved to ISO 9001 and the software requirement of ISO900-03 Tick-IT.

BM100 - Single Level Trip Amplifier - IEC61508 (typically SIL2)

The BM100 replaces the MIN100 model and is a Single Level Trip Amplifier from a single process signal input. The trip action can be set up so that the alarm condition can be above (high trip) or below (low trip) the set point and also so that the relay can be normally energised to de-energise in the alarm condition (fail safe), or normally de-energised to energise in the alarm condition (non-fail safe). Please visit our website to view detailed product specifications and mechanical details. Our technical team is on hand to provide further information and advice regarding the suitability of the BM100 to your applications. The BM100 can be ordered easily on our website.

BD100 Single Level Trip Amplifier - IEC61508

The BD100 replaces the DIN100 model and is a Single Level Trip Amplifier from a single process signal input. The trip action can be set up so that the alarm condition can be above (high trip) or below (low trip) the set point and also so that the relay can be either normally energised to de-energise in the alarm condition (fail safe) or normally de-energised to energise in the alarm condition (non-fail safe). Please visit our website to view detailed product specifications and mechanical details. Our technical team is on hand to provide further information and advice regarding the suitability of the BD100 to your applications. The BD100 can be ordered easily on our website.

Multiplexed Signal Converters

At Lee-Dickens Ltd we offer an excellent range of multiplexed signal converters. The range includes:

• SEL300 – Multiplexed Output Isolating Signal Converter: an isolating signal converter that will convert various process signals into a relay selectable transmission voltage signal.
• CSM-1 – 16 Channel Current Multiplexer: a 16 channel current input multiplexer providing one current output.
• RTM-8 – 16 Channel PT100/ Current Multiplexer: a 16 channel multiplexer with 8 channels for 3 wire PT100 sensors and 8 channels for two or four wire transmitter current inputs giving one current output.
• DCC-8 – Digital to 8 Channel Current Loop Converter: a digital input to 8 channels current loop output converter designed to enhance small PLC units with limited analogue output capabilities.

Maths Functions Including Linearisers

We also supply a range of high quality maths functions including linearisers. The range includes:

• MIN500 – Mathematical Functions: features a multi-functional analogue computing circuit that is factory calibrated as either a divider, multiplier, squarer, square root extractor or rectangular weir lineariser.
• QC500 Series – Mathematical Functions: this series features precision electronic instruments that contain a multi-functional analogue computing circuit that is factory calibrated for one of the following functions: M500, D500, SRE500, SQ500, L500, AL500 and RW500.
• L900RG Mark II – Ramp Generator: this universally programmable ramp generator that can provide a range of settings.

Please visit our website to view detailed product specifications and mechanical data.
 

Power Measurement

Our power management range features:

• E1-VAR Series: to measure 3 phase 3 wire balanced load, 3 phase 4 wire balanced load and 3 phase 3 wire unbalanced load.
• VVH-3 – VAR/VAR Hour Transducer Single or Three Phase: combines power and energy transducers in one compact housing.
• WVT-3: combines Watt and VAR transducers in one compact housing and provides two simultaneous proportional, linear and highly accurate DC current outputs extracted from the voltage and current inputs and their relative phase angle.
• E1-FREQ – Mains Frequency to Current/Voltage Converter: the measured input is isolated, filtered, squared-up and offered to a precision frequency to current converter.

Please visit our website to view the range in full.

Oil & Gas Remote Control and Monitoring

The Sitewatch™ Remote Control and Monitoring System is currently being used by Yemen Hunt Oil, Octagon Gas, Star Energy and more. It is used to monitor pipelines that carry oil across more than 200km of mountainous terrain. The system features: flow measurement, leak detection, alarm-reporting, pump speed control, valve position control, pressure reducing station monitoring and automatic daily flow reports. Other features include: clear alarm presentation, swift navigation from alarm/event text to relevant graphics display, individual user permission profiles, easy to use trender and on demand set of pipeline reports.

MIDI-8 RTU

The MIDI-8 RTU is a small microprocessor based Remote Terminal Unit (RTU) suitable for a wide range of remote monitoring applications. The MIDI-RTU is housed in an IP65 rated polycarbonate enclosure which can be wall mounted if required. It features a four-line liquid crystal display and a 16 key keypad for clear display and easy operation. It is supplied, as standard, with 16 optically isolated digital inputs, eight isolated differentially selected analogue inputs and four single pole relay digital outputs. The MIDI-RTU is used for a range of applications including small SCADA systems (environmental monitoring, ATC applications, chemical industry), VMI systems and internet based remote monitoring (silo and tank farms, wind farms and pump stations).

Micro RTU

The Micro RTU is a self-powered RTU designed specifically for small, remote monitoring applications. It communicates via cellular networks using SMS and Mobile Data (GPRS) and features a stub antenna. It is programmed to read and monitor input signals, check for high and low alarms and automatically report site status. The Micro RTU has a 4-20mA analogue input and an integral temperature sensor. Other options are available including voltage inputs, digital inputs and digital outputs. This RTU is supplied in an IP66 die case aluminium enclosure. Please visit our website for more information. Alternatively, please contact us directly at Lee Dickens Ltd with your requirements and we will be happy to help.

ARM9 32-bit based SW100/SW100R RTU

The SW100 is a small RTU designed for use with any remote monitoring application. It features lead free components and is supplied in a wall-mountable IP rated enclosure. It is supplied, as standard, with four 16 bit isolated, differentially selected analogue inputs (AINS) and 5KV isolation. Three additional expansion slots are available; the sub boards include 8 way digital input, 8 way digital output and 4 way, 16 bit analogue input. The analogue inputs can be configured to accept either 4 – 20mA or 0 – 10Vdc and the digital inputs can be configured for internal or external powered contacts. Please see full product data on our website.  

ARM9 32-bit based SW8000 RTU

The SW800 is an RTU designed for monitoring large systems. Its modular design features an SW800 controller (32-bit ARM9 microprocessor based) and separate input/output modules. It can be configured to meet specific application requirements by combinations of plug-in processors and I/O modules. The SW800 RTU has been designed for rack mount applications. It features lead-free components and can be used in demanding environments of extremely high or low temperatures. It runs on the Linux operating system and supports IsaGraf™ as an option. Please visit our website to download our datasheet for more information.

Sitewatch 2000 - PC Based Telemetry Software

The Sitewatch 2000 is a PC based software package that has been carefully designed for the accurate remote monitoring and control of equipment via a Public Switched Telephone Network (PSTN). This software operates under Windows 95/98 or Windows NT. It can be used alongside Sitewatch 16840, Mini or Midi RTUs which provide different combinations of digital and analogue input and output capabilities. An optional voice messaging system is also available which enables alarm conditions to be reported to specific personnel when the master station is un-manned. Please see full software description on our website.