The versatile, compact Microlink 840 is the culmination of Biodata's 38 years of experience designing data acquisition and control systems. This 8-channel, battery-backed, data logger can also monitor alarm thresholds and output digital control signals. All functions are set through software on a PC communicating with the Logger via Ethernet or Internet. The Microlink 840 is ideally suited for:
- Logging data from gas, electric and water meters
- Monitoring machines to record percentage on/off times
- Counting items produced
- Monitoring digital sensors like flow meters
- Counting switch closures
- Monitoring analogue transducers including pressure, temperature, force, voltage and current.
It is available from us and Windmill's data acquisition shop .
Features | Counting Options | Raise Alarms | Utility Meter Monitoring | Saved Data | Ordering | User Manual
- Includes the powerful yet easy-to-use Windmill software for Windows
- Save data as text, xml, EnergyLens files and to a MySQL database
- All results presented in engineering units of your choice (kilowatt-hours, oC, cubic meters, windspeed, products per hour, etc)
- Two alarms can be set on a combination of channels
- Count totals, frequency, periods, pulse widths and elapsed time.
- Count to over 16 million
- Save minimum, maximum, final and averaged values over your chosen logging interval.
- Control digital outputs
- Automatically e-mail data and reports
- Read the Loggers' data from any enabled PC on the network or Internet
- Free technical support for life
- Money-back guarantee if not satisfied
The Microlink 840 offers many counting options:
- Accumulating counts
- Frequency measurement
- Period measurement
- Pulse width counter
- Elapsed time counter
- 16-bit or 32-bit counting: 16-bit allows counting up to
65000; 32-bit allows counting to over 16 million.
You can set a scale and offset factor to the count from software. For example if the pulses came from a flow meter which produced one pulse for every 50 millilitres, a scale factor of 0.05 would give a reading in litres.
- Alarm on analogue level, on-off state or count
- Set two alarms on a combination of channels
- Switch a digital output on alarm, sounding a buzzer, turning on a light or switching equipment off for example
- Notify alarms to remote PCs over Ethenet or Internet
- Insert a delay before an alarm is triggered, helping prevent false alarms
Log data from gas, electricity and water meters and send the consumption readings to a central PC running Windows. The Microlink 840 lets you monitor demand in real-time and identify patterns of use.
- Data files can be read by Excel, Energy Lens, and other software
- Continuous monitoring, logging and display using Windows software.
- See consumption in real-time
- Record total usage and usage over your chosen set intervals, for example each hour's and each day's demand
- Chart data and show tables of recent readings
- Alarm indication on all readings - set thresholds above or below which alarms are triggered and logged
- Each Microlink 840 can monitor 8 meters
- Maximum count of over 16 million
- All data is time-stamped
- Log the counts from the volt-free contacts of your utility meters
- Works with any meter emitting contact closure pulses
Data can be saved in text files, xml files, Energy Lens files and to a MySQL database.
For each channel you can store...
- Maximum value over the logging interval
- Minimum value over the logging interval
- Average value over the logging interval
- Final value of the logging interval
- Custom calculations on saved data
The Microlink 840 costs just 295 pounds and is available on-line through Windmill Software's data acquisition shop. You can also buy direct from us - e-mail email@example.com or telephone +44 (0)161 834 6688. Whether bought from Windmill or ourselves we provide free technical support for life.
Please get in touch if you need more information - e-mail firstname.lastname@example.org. You can also download the Data Logger leaflet and 840 Data Logger User Manual.
Number of inputs: 8
Current input range: 4–20 mA
Voltage input range: By default 0–3.3 V - can be changed by adding resistors
Maximum count: 16 million
Max logging interval: 9 hours
Min logging interval: 1 minute
(Maximum, minimum, average and final values can be saved over the logging interval.)
Data storage: Depends on number of channels and logging interval,
eg 8 channels of data + maximum, minimum and average value
logging every hour gives a month's data storage.