Thermo Scientific Mercury Freedom 80i Manual page 21

Introduction
Model 83i
regulators, as well as an electronic vacuum transducer monitoring the
dilution module vacuum in the Model 83i.
The Model 83i extraction probe includes an filter with a built in dilution
module and high temperature thermal converter for reducing oxidized Hg
to elemental for subsequent analysis by the Model 80i.
The Model 82i provides both 220 and 110 AC voltage to the Model 83i.
220 VAC powers the probe's stinger heater and filter/eductor heater. 110
VAC powers the Total Hg converter as well as four (4) probe solenoid
valves for cal/zero gas, stinger blowback, filter blowback, and Hg spike. The
Model 82i also receives two (2) 4-20 ma signals from the probe critical
orifice pressure transducer and the fast loop venturi pressure transducer.
Thermo Fisher Scientific Mercury System Manual 1-7