H G C Humidity
2 0 /Generator
H G Cand3Controller
0TPC 160 with mounted humidity andtemperature sensor

The Humidity Generator and Controller HGC 20 and HGC 30 is designed forthe automated regulation of the relative humidity for a wide range of applications.
It is easily connectable to any temperature controlled measuring chamber(OCA, TGA, TMA, DSC etc.).
The ambient air/gas first flows throughthe integrated desiccant reservoir. An
electronic valve, controlled by the humidity and temperature sensor –directlymounted in the measuring chamber–diverts some air/gas through the heatedwater before it flows through the heatedconnection tube to the chamber.
Standard features• Stand alone generation of dry air without an external pressurized gas supply• Heated water reservoir• Heated connection gas tube (transferline) to thermal chamber to avoid condensation• Easy control via touch-screen or
optional software• Serial RS 485 or USB interface• Calculation of dew point in the meassuring chamber

HGC working range

External gas supply at HGC 30
Humidity Generator and Controller HGC 20

Special features of HGC 20• Automated drying and regeneration ofdesiccant by a built-in heating system
in two alternatively used desiccant reservoirs (total stored desiccant amountabout 1.0 kg)
Special features of HGC 30• Automated drying and regeneration ofdesiccant by a built-in heating system
in two alternatively used desiccant reservoirs (total stored desiccant amountabout 1.0 kg)• External gas supply with integratedpressure regulator (only clean and oilfree gas)
• Integrated flow rate controller (0.07 ...
3.5 Nl/min; calibrated for N2 and Ar)

Humidity Generator and Controller HGC 20 connected to the TPC 160 of an OCA 20

Software for control, measurement,analysis and presentation
The SCH 20 software assists you in theintuitive use of the humidity generator
HGC xx, by• controlling the humidity directly in themeasuring cell
• define, execute, save, and load ofhumidity profiles• collecting and evaluating the humidity
and temperature data
• easy export of humidity and temperature data

SCH 20 control software for HGC

Relative humidity control range:• 5 % .. 90 % @ 25 °C• 10 % .. 85 % @ 85 °C

Relative humidity accuracy:• HGC 20: ± 1.8 %• HGC 30: ± 1.0 %Temperature range:• +5 … +85 °C (requires appropriate temperature controlled chamber)

Dew point range:• min. -15 °C, max. 85 °C

Gases:• HGC 20: ambient clean air• HGC 30: ambient clean, oil-free air; external gas supply with push-in fitting 6 mm
for Nitrogen, Argon, or clean, oil-free compressed air; with integrated pressure regulator for a maximum inlet pressure of 14 bar

Flow rate:• HGC 20: flow rate of 600 cm3/min, constant flow
• HGC 30: adjustable flow rate 70 … 600 Nml/min* with ambient air,
70 … 3 500 Nml/min with external gas supply• *) Nl (Norm Liter) is a unit of volume for gases equal to the volume of 1 litre(0.0353147 ft3) at a pressure of 1013.25 hPa (1 atm) and at a temperature of 0 °C (32 °F)

Heated water reservoir:• 80 ml

Desiccant reservoirs:• two desiccant reservoirs (total stored desiccant amount about 1.0 kg), with automated drying and regeneration of desiccant by a built-in heating system

Heated connection gas tube length:• 120 cm

Control connectors:• RS-485 connection (to OCA) or USB connection (for TGA, TMA, DSC etc.)

Dimensions:• 33 x 28 x 35 cm (LxWxH)

Weight: (incl. heated transfer line anddesiccant)• HGC 20: 19.5 kg• HGC 30: 20.5 kg

Power supply:• 80 … 275 VAC; 50 … 60 Hz; 250 W

Accessories and spare parts• liquid temperature control unit TFC 100 with Triple diffuser TDI 100• peltier temperature control unit TPC 160 with Triple diffuser TDI 160• special adapters for measuring cells which are not produced by DataPhysics• bottle with desiccant (700 ml molecular sieve)

F o r m o r e i n f o r m a ti o n ab o u t a t ai l o r m a d e s o lu ti o nto yo u r su r f a c e c h e m i s tr y r e q u i r e m e n t s ,please contact us.
We w ill b e p l e a s e d to p r o v i d e a q u o t a ti o n ,o b l i ga ti o n f r e e , f o r yo u r i n s tr u m e n t s y s te m .
DataPhysics Instruments GmbH • Raiffeisenstraße 34 • 70794 Filderstadt, Germany
phone +49 (0)711 770556-0 • fax +49 (0)711 770556-99
sales@dataphysics.de • www.dataphysics.de

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Technical information in this document is subject to change without prior notice. Errors and omissions excepted.
© Copyright by DataPhysics Instruments GmbH, Filderstadt.
is a registered trademark of DataPhysics Instruments GmbH DS/HGC-1512-1.7/EN
Photos by Thomas Müller, Bavaria, Tony Stone, Norbert Heil, DataPhysics archives. Text and layout: Gerhard and Daniel Maier

Technical data