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DATA LOGGING METERS

Procon Technology can supply the following Digital Multi-Meters (DMM) and Digital Power-Meters (DPM) at competitive prices. Please see prices below and email us regarding your quantity requirements. In Australia, call 03-98306288 now to buy!

Payment and delivery?
Payment may be made by debit or credit card (AMEX, VISA or MASTERCARD) by PHONE, FAX or MAIL (or email at your own risk). AUD$ prices are Australian dollars. Note, these are EXPORT prices. For delivery within Australia please add 10% GST (use +GST column). For current exchange rates click here. For an order form that you can print out and fax or mail to us - click here.

Delivery charge within Australia $11 any quantity ($16.50 for EXPRESS BAG). Delivery to all overseas destinations - P.O.A. (ask us). EX-GST purchases may only be made when the delivery address is outside of Australia. i.e. for EXPORT orders. Prices subject to change without notice.

Customer comments:'I received the package on October 1st, only 4 days in transit! The meters work great. Thank you very much.' Mack M. USA 'What do they feed those Qantas pilots on? The package arrived Monday! That's as quick as if I ordered something from Maplin - and they're in Essex. Thanks and best regards' Iain Rankin, England.

MORE INFORMATION ON THE Q1074A:
*** to provide another example why this meter is SO GOOD, one customer complained that it was not very accurate in measuring resistance values below 1 ohm. I suggested that he should be using the "resistance" mode and not the "continuity test" mode and that he should short-circuit the leads and press "Rel" (relative) before trying to measure such a small resistance. In addition I explained that the accuracy of resistance measurements was very limited below 1 ohm because of the resolution being 0.1 ohm +/- 2 counts! I also suggested that there are better methods for measuring such low resistance (e.g. the bridge method) HOWEVER I did start experimenting with resistance values between 1 and 10 ohm and noticed that the Q1074A was more accurate than any other meter that I had... why? It's due to the measuring technique used on the Q1074A... it applies a small positive voltage and alternatively a small negative voltage and, I assume, averages the readings! Most other meters simply apply a positive voltage... just like the continuity test used on the Q1074A meter. If your DMM relies on simply applying a fixed positive DC current and then measuring the DC voltage drop then inaccuracies can occur if the resistor itself generates a voltage! How can this occur? Remember two dissimilar metals can produce a voltage (this is how the thermocouple works), so I decided to try connecting the thermocouple and measure the resistance... guess what? On the Q1074A continuity test and on other meter's resistance test, I found the resistance would increase or decease (depending on the polarity) when the thermocouple was heated (e.g. stick your fingers on the probe) BUT when the Q1074A resistance test was used, the reading REMAINED CONSTANT !!!

MORE INFORMATION ON THE QM1571:
The QM1571 datalogging DMM operates wirelessly (up to 3m) on the same frequency, multiple units can NOT be used within close proximity to each other. Multiple DMMs can only be used provided that they are separated by 10+ metres. Details are provided of using different COM ports, when you purchase the DMM-SW CDROM! NOTE: The wired data logging DMM have no restriction, multiple units can be used and connected to one computer. e.g. measure DC voltage and current and calculate power! i.e P=VI.

The QM1571 meter oozes quality inside and out - click here. It is so indestructable that we offer a "lifetime warranty". It is similar to other meters costing much more... but the QM1571 includes wireless data collection and a non-contact voltage detector! "The QM1571 is a comprehensive low cost multimeter, for the money its functionality is fantastic, with everything you would expect with good AC & DC ranges, Frequency and Capacitance measurements, complete with Temperature Probe and Case. Exceptional value for money. Why buy a Fluke?"

* place the top of the QM1571 DMM near AC wiring and a red LED will illuminate. Switch to 400mV DC and select Hertz and display the AC frequency without any physical contact! Note, when collecting data always insert a new battery... a good quality 9V alkaline battery will last 3 days continuously (with wireless operation) and up to 1 week with a lithium battery! Imagine? Now you can monitor data, such as battery voltage, remotely whilst your mobile robot wanders around! Or use the QM1571 in a hazardous environment whilst you collect data direct on your PC. Multiple meters can even be connected to a PC provided they are kept a sufficient distance apart so as not to interfere with each other.

Postscript: The graph below shows how simple it is to plot data obtained by the meters. The temperature probe was plunged into a beaker of ice cold water. The text file, with 100 data samples, was then loaded into an Excel spreadsheet and graphically presented. The graph below was produced by a year 7 student!

To see an application which logs the voltage and current of a solar cell - click here - by Ozge Topuz of Bilkent University, Turkey.

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© Copyright by Procon Technology, PO Box 655, Mount Waverley, Victoria 3149, Australia.
In Australia Phone: 03-98306288 FAX: 03-98306481.
International Phone: +61-3-98306288 FAX: +61-3-98306481. Created by: Peter E. King.
Australian Business Number (ABN): 94479362616. Email: procontechnology@tpg.com.au