Windmill Software

Data acquisition and control

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Measuring pH

751-pH: pH Measurement via PC's USB port

Sale: Was 1095 now just 795!

Monitor 12 pH probes. With digital I/O & counting. Expand to measure temperature, pressure, flow, level etc.

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751: Multifunction Data Acquisition USB Unit

751 Multi-function USB Data Acquisition with Windmill Software: 16 analogue inputs, 32 digital i/o, 8 counters

Sale: Was 595 now just 295!

For 16 differential analogue inputs, 16 digital inputs/outputs and 8 counters. You can connect eight 751s to one PC. With the addition of suitable Microlink 59x conditioning units, you can also monitor thermocouples, strain gauges, pressure transducers and current. Includes Windmill data acquisition software for logging, charting, output control and direct data transfer to Excel.

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Strain Gauge Monitoring

Strain Measurement:  USB Data Acquisition Unit, Strain Gauge Connection Box, Windmill Software, free technical support

Sale: Was 775 now just 475!

Monitor 16 strain gauges, balanced bridges like pressure transducers or voltage signals. Connect 8 units to 1 PC and monitor 128 strain gauges. Readings in microstrain. Zero reference level can be set in Windmill software. Plus digital input & output and counting.

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Best Sellers

Thermocouple Monitoring

Thermocouple measurement over USB, Windmill 7 software & free technical support

Sale: Was 730 now just 360!

Monitor 16 thermocouples and voltages, digital I/O and counting. Connect 8 units to 1 PC and monitor 128 thermocouples.

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Microlink 840: Versatile Data Logging over Ethernet and Internet

Microlink 840: Versatile data logging

The culmination of 30-years of experience designing data acquisition and control systems has resulted in this extremely versatile, compact unit which lets you monitor analogue transducers, digital sensors, utility meters, machines and digital status. It can also raise alarms and control digital outputs.

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750: Low Cost Measurement & Control

750 USB Data Acquistion with Windmill Software: analogue input, digital i/o, counters, free technical support

16 analogue inputs, 16 digital inputs/outputs, 8 counters and Windmill logging and control software: all for 150. Connect up to 8 units to a PC. Data saved in text files, or passed directly to Excel.

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pH-box: pH Connection Box

DAQ Catalogue | Data Acquisition Hardware: Ethernet and Internet |  pH-box: pH Connection Box

Microlink pH Connection Box for measurement and control over Ethernet, Internet and USB

Microlink pH Connection Box for measurement and control over Ethernet, Internet and USB

Price: 500.00 (Excluding VAT at 20%)


A boxed unit which lets the Microlink 751 (USB) and 851 (Ethernet and Internet) monitor 12 pH electrodes. The electrodes are connected to BNC sockets. You will also need a power supply.

pH Measurement

The 751-pH package includes a pH connection box. Just connect your electrodes to this box's input protected sockets, plug the box into the 751 or 851 measuring unit and away you go. This method of connection means you can use the same 751 or 851 measuring unit to monitor, for example, temperatures as well as pH.

The reason that you cannot connect pH electrodes directly to the data acquisition unit is that they have a very high output impedance and are not able to supply enouch current to allow the use of a normal voltage input. The pH connection box has high impedance amplifiers to condition the signals from the electrodes. The pH box connects by a ribbon cable to the 751 or 851 unit. It also provides screw terminals for any other signals you are monitoring.

The standard package handles 12 pH electrodes, but can be expanded to 16 electrodes on request.

DAQ Catalogue | Data Acquisition Hardware: Ethernet and Internet |  pH-box: pH Connection Box