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Automatic calibration unit


Automatic calibration system for the
Mercury Ultratracer UT-3000


Automatic Calibrator




UT-3000 and AutoCal

The static calibration unit is meant for automatically calibrating the UT-3000 Mercury Ultratracer in natural gas monitoring systems for low to intermediate mercury concentrations.


Operating principle


Autocalibrator with sysringe

The Mercury Instruments Automatic Calibration Unit consists of a specially designed mercury vessel containing elemental mercury of high purity, surrounded by an aluminium jacket cooled by a thermoelectric cooler. For automatic calibration a motor driven syringe extracts a defined volume of mercury saturated gas and feeds it to the UT-3000 Ultratracer.

The UT‘s microprocessor calculates the mercury concentration from temperature and volume of the calibration gas.

The temperature within the mercury vessel is measured by a high precision electronic sensor (PT 100).




Automatic Calibration Unit
Technical Specifications


Purity of contained Hg:


Accuracy of T-Sensor:

0,01 °C

Power supply:

230 VAC / 50 Hz,
110 VAC / 60 Hz (option)

Power consumption:

250 VA


45 x 15 x 35 cm (W x H x D)


approx. 6 kg

As a leading supplier of high precision analytical equipment, we strive at all times to offer top quality solutions. Our quality management system is certified according to ISO 9001.

AutoCal cover

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