Model 6020 Advanced Online Dewpoint Hygrometer0 pages

Model6020DewpointHygrometer
SingleChannelAdvancedOn-LineDewpointHygrometer
Model 6020 is a single channel, panel mounted,
online hygrometer designed to accurately measure
trace moisture in process gases utilising a range of
dedicated, ultra high capacitance, eld mountable
sensors.
The system incorporates an automatic calibration
(AutoCal) facility and encompasses measurement
needs from -110°C to +20°C dewpoint.
The sensor has been designed and conditioned for
long term stability, and together with its high
sensitivity, allows use of up to 1km cable length
between sensor and instrument.
Additionally, the sensor is ATEX certied for
intrinsic safety so can be used in hazardous
environments with a suitable Zener barrier in the
safe area.
Oering full eld interchangeability, each Model 6020 unit is factory calibrated with sensor to better
than ±2°C accuracy and is supplied with a certicate of calibration traceable to International Humidity Standards.
There are three Hot Key front panel key functions to gain rapid access to set alarms trip points and choice of
displayed engineering units. These functions can be locked to prevent unauthorised tampering.
Users may choose to view the trace moisture levels in °C dewpoint, °F dewpoint, ppm(v), ppm(w), g/m³ or lb/MMSCF
on the 5 digit, seven segment LED display.
The factory calibrated, but fully configurable, analogue current output is automatically linearly correlated with all the
selected engineering units.
Model 6020 contains two independent, fully user programmable alarm contacts to provide all the versatility
required for any application. A digital communication channel is provided via a RS485 serial connection for remote
interrogation of measured values and status of alarms and instrument.
Should the need arise to set up the instrument dierently to the factory provided conguration then a highly
exible, user congurable setup menu is built in. The features within the setup menus are protected by user
congurable passwords to limit access and protect against unauthorised changes.

Features
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Works with a range of sensors covering an overall range from -110°C to +20°C dewpoint (-166°F to +68°F)
Units selectable for °C Td, °F Td, ppm(v), ppm(w), g/m³ or lb/MMSCF
System accuracy better than ±2°C dewpoint equivalent
Calibrations traceable to International Humidity Standards
AutoCal calibration adjustment to maintain accuracy between laboratory calibrations
On board pressure dewpoint calculator, including data for Natural Gas
Molecular mass pre-loaded for ppm(w) in common gases, other gases can be entered
Two fully programmable alarms with 10A relay contacts and status LEDs
An analogue current output linear and range congurable for selected units
RS485 port for digital output of measured value
Large, easy to read, 5-digit LED display
Hot Key functions for rapid access to set alarms and units, can be locked to prevent tamper
Ex certied sensors for Hazardous Area use (via Zener barrier in Safe Area)
Sensor cable length can be up to 1 km
© Alpha Moisture Systems Ltd.

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