beautypg.com

1 scope of document, 1 introducing the hygrogen2, 2 temperature and humidity references – ROTRONIC Hygrogen2 User Manual

Page 5: E-m-hg2-s-v2.1

background image

E-M-HG2-S-V2.1

Rotronic AG

Bassersdorf, Switzerland

Document code

Unit

HygroGen2: Humidity and Temperature Generator

with AutoCal/AutoCal+, Remote Control and

Range Extensions options.

Instruction Manual

Instruction Manual for Software

Version 2.1

Document Type

Page 1 of 75

Document title

1 Scope of Document

This instruction manual refers to HygroGen2 running software version 2.1. To determine the software

version your instrument is running, please refer to the

Settings Screen

as shown in

section 3.4.5

. For

version 1.x.x, the software revision number is displayed by pressing the “HG Info” button; for version

2.0, select “Info” from the “Service” drop-down menu; for version 2.1, select “HygroGen2 Info” from

the “Support” drop-down menu. An equivalent manual is available on

www.rotronic.com

for

HygroGen2 instruments running software versions 1.x.x and 2.0.

If you are running version 1.x.x, it is strongly recommended to upgrade to version 2.x. Please see

section 3.2 (Upgrading From Previous Versions)

for installation instructions.

1.1 Introducing the HygroGen2

The HygroGen2 is a generator of controlled relative humidity and temperature environments,

primarily for use in calibrating humidity instrumentation, but is also well suited to the calibration of

temperature instrumentation, particularly those used for the measurement of temperature in air.

It is a completely self-contained, portable unit requiring no external resources except mains power.

This allows technicians to perform calibrations in the laboratory, workshop or on-site.

The HygroGen2 uses a mixed flow method for generating the %rh required by the user. A desiccant

cell provides a source of low humidity and a piezoelectric humidifier generates high humidity. A Peltier

element is used for heating and cooling the chamber. Measurement and control is provided by a

combination of a ROTRONIC HygroClip probe, an embedded Platinum Resistance Thermometer (PRT)

and a multi-loop controller. Set-points are entered using the touch-screen front panel display.

1.2 Temperature and Humidity References

The HygroGen2 creates stable temperature and humidity conditions uniformly within its test chamber.

Instruments under test (IUTs) are inserted into the chamber and compared to a reference to calibrate

and monitor their performance so that any appropriate adjustments can be made.

There are three main relative humidity (RH) calibration reference types that can be used with the

HygroGen2. Each has its own advantages and disadvantages, so the reference chosen should be

determined by the uncertainty of measurement required.

• Internal control RH probe reference

• External RH probe reference

• Chilled Mirror Hygrometer reference

© 2014; Rotronic AG

E-M-HG2-S-V2.1