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Review: Agilent U1233A DMM WIth Bluetooth Adaptor

This 6000-count true RMS multimeter has a built-in non-contact voltage detector, low impedance voltage measurement mode and the option of a Bluetooth communication module for wireless data logging.

By Nicholas Vinen

The Agilent U1233A Cat III 600V digital multimeter can measure AC and DC volts, frequency, resistance, capacitance, temperature (with a thermocouple), AC and DC amps and microamps and current frequency. It also has diode and continuity test (with a beeper), a display backlight and a built-in LED torch.

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The test leads supplied with the Agilent U1233A “feel” much better and more robust than those supplied with most multimeters, while the probes themselves come apart (as shown here) so they can accept other fittings.

Additional modes include relative measurements, max/min measurements, auto or manual ranging, reading hold/auto-hold and battery state display.

There are some things we particularly like about this multimeter. One is that there is no need to change the connections when you switch between amps and microamps modes as there is a single current measurement terminal.

Also, the fact that it goes up to 60MΩ in resistance mode is good as many meters will only read to 10MΩ. The bar graph (below the numeric read-out) makes it easier to interpret rapidly changing readings.

We also like the probes that are supplied. Not only are they good quality but the probe ends pull off to reveal insulated banana plugs, making it easy to wire the meter up to other test equipment with banana sockets, such as bench supplies.

The selector switch is chunky and is logically laid out; they haven’t packed a gazillion different modes into one position. The built-in non-contact voltage detector and torch are nice touches.

Also, unlike some meters, it uses four AAA cells for power rather than a 9V battery. 9V batteries are pretty expensive and don’t usually last that long (especially if you’re going to use the LED torch a lot).

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