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Automatic Calibration Unit (AutoCal)


Automatic calibration system for the
Mercury Ultratracer UT-3000



UT-3000 and autocal


The static calibration unit is meant for automatically calibrating UT-3000 Mercury Ultratracer in natural gas monitoring systems at 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: 99.999999%
Accuracy of T-Sensor: 0.01 °C
Power supply: 230 VAC / 50 Hz
110 VAC / 60 Hz
Power consumption: 250 VA
Dimensions: 45 x 15 x 35 cm (W x H x D)
Weight: ca. 6 kg
Mercury Instruments As a leading supplier of high precision analytical equipment, we strive at all times to offer top quality solutions. Our products are manufactured according to the ISO 9001 quality regulations.



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