Overview
These Modular, Multi-function, Multi-channel, Multi-site
systems are designed for batch monitoring of a variety of environmental parameters in laboratory or industrial applications where there is a need for automatic simultaneous measurement and recording of data from a number of sites. They enable the connection of any number of sensors directly to a serial or USB port of one PC with Windows operating system and are currently suitable for pH, Temperature, Ion Selective Electrodes (for ion concentrations), Redox, Dissolved Oxygen and Bio-sensors. The basic software displays the measured electrode potential and temperature on screen and stores the results in a data file which can be exported to other software packages for data processing. Special software is available for particular electrode calibration, and on-line data processing and recording.
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Hardware
The modular construction is based on standard Euro-Card PCBs and gives maximum flexibility in tailoring the system for specific needs and for subsequent modification or upgrading. The smallest unit consists of one card with four sensor inputs, together with a processor card with microprocessor-control (‘firmware’) for channel selection, timing, sequencing, A/D conversion, filtering and communication to the PC. The basic housing is a 19" wide Sub-Rack (half width and smaller versions are also available) which can be supplied for rack mounting or for free-standing, bench-top operation. It has a BUS structure so that Euro-Cards can easily be exchanged or added. Thus, in order to change the configuration, it is only necessary to slot in an appropriate card and change the microprocessor chip, containing the specific firmware, on the processor PCB.
Cards and chips are currently available for: pH, ISE, or Redox; Temperature; Dissolved Oxygen; and various Bio-sensors.
Nico 2000 Ltd. can supply a range of 'ELIT' brand Ion-Selective, Reference & pH electrodes, and Temperature sensors at competitive prices.
See Products page for descriptions, prices and ordering.
Power supply.
Input voltages 93 to 264 AC, Output 12 V DC. Various voltages for the analog and digital circuits are generated by DC/DC converters, giving better selectivity.
Connectors
Isolated BNC connectors for sensors & snap-in connectors for Temperature probes
Control elements
LED display for ‘’power on’’, ‘’system initialisation ‘’ & ‘’measurements in progress ‘’
Communication
Depends on distance between Measuring System and computer.
RS-232 asynchronous serial port connection for cables up to 30 m,
RS-485 for 30 m to 1200 m.
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Software
The software is supplied on CDROM. The basic version displays the sensor signals in milli-volts and the temperature in °C on-screen and records these data, together with time and date of measurement, in an ASCII text file which can be opened by MS Excel or other software packages for off-line data processing.
Sample measurements are fully controllable by the operator who can select:
- Sampling rate (from once every 100 milliseconds to once a day);
- Signal averaging (each reported measurement is the average of a selected number of readings taken at 100 ms intervals);
- Total duration of measuring cycle.
Typical Screen Display to show Sensor Configuration.
Typical Screen Display During Data Acquisition.
Special software modules are available for particular electrode calibration, and on-line data processing and recording.
Software PHTM16a. - Allows 2 or 3-point calibration of pH channels.
- Calculates the pH value based on this calibration.
- Allows Automatic Temperature Compensation to be enabled or disabled.
- Displays Table of: mV, pH. Temperature, ATC on/off, Date, Time.
Software ISEM16a
Upgrade of PHTM16a for Calibrating Ion-Selective Electrodes and Monitoring Ions.
Software DOM16a
Upgrade of PHTM16a for Calibrating Dissolved Oxygen Sensors and Monitoring Dissolved Oxygen. Typical Screen Display for DO Calibration. |
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Prices and ordering
These versatile and cost-effective units are manufactured in accordance with customer needs; thus prices and delivery times will vary.
Please e-mail nico2000ltd@btinternet.com with details of your requirements and we will supply a quotation.
Please state: -
Type and number of sensors to be monitored simultaneously.
- Distance between Measuring System and sample.
(i.e. length of screened electrode cabling required - normally up to 5 metres, but can be up to 1000 m with additional battery-powered in-line pre-amplifiers).
- Distance between Measuring System and computer.
(RS-232 connection for cables up to 30 m, RS-485 for 30 m to 1200 m).
- Rack mounted or Free-standing unit.
- Your name, postal address and telephone number.
- A brief description of your application would be helpful, if this is not privileged information.
If you then wish to proceed, we will supply a detailed questionnaire which can be used as a discussion document for determining a precise specification. See
Price List for prices and descriptions of other ELIT products.
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CCR / nico2000 Ltd / 26 February 2003 - last update 22 March 2012
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