Automatic Dehydrator, 230 VAC

Rev : A | Rev date : 22 May 2024

The GOBI77 Automatic Pressurization Dehydrator is designed to protect air dielectric cable systems up to 3600 l. 
The dehydrator includes a self contained completely automated air drying system that utilizes a pressure swing moisture absorption cycle to provide pressurized dry air. This eliminates the need for replacement or manual reactivation of the desiccant and together with the LAN remote monitoring makes the GOBI77 dehydrator ideal for unattended operation at even remote sites.
The diaphragm pumps start at 25 kPa and stop pumping 40 kPa to save energy. 


  • Flow rate 840 Nl/h +/- 10%
  • dew point better than -40°C @ 30°C Ambient temperature and 85° relativ humidity
  • two pumps each with two drying chambers running alternatively
  • drying chamber automatic regeneration
  • microprocessor control low/high pressure, high humidity, power and system failure alarm
  • local and remote alarm signalling
  • mounting: wall, floor, 19" rack, 21" rack

Technical features

General Specifications

Product TypeAutomatic Dehydrator
max. System Volume @Sea Level l3600
Output Capacity l/h840
Output Pressure kPa (PSIG)25 kPa starting pump, 40 kPa stopping pump, factory adjusted
Output Dew Point °C-40
Number of Outlets4
Output Fitting10 mm OD tube or adapter
Network ManagementTCP IP protocol, RJ45 connection


Operating Voltage V230 V AC
OperatingCurrent A0.7

Mechanical Specifications

Dimension H x D x Wcm31 x 29 x 48.2 (wall mount)
31 x 24.5 x 53.5 (21" rack mount)
31 x 24.5 x 48.2 (19" rack mount)


Ambient Temperature Range °C-10 to +40



Summary alarm provided by internal SPDT (Single Pole Double Throw) relay contacts.  (remote alarm)

Power and system failure (remote alarm)

High pressure alarm (local alarm)

Low pressure alarm (local alarm or by remote TCP/IP protocol)

High humidity (local alarm or by remote TCP/IP protocol)


Model NameDescription
TUBE-01-G18Gas inlet adaptor G 1/8" for 6mm tube
TUBE-0816Tube Clamp, 8-16 mm
TUBE-SEALTeflon Tape 10mm, 12m

External Document Links


Delivery includes following accessories:

1x  Power connector : IEC socket
1x Alarms connector : female connector with plastic case
25 meter Tube PR-5 or MB Ø10 mm.
4x Output angle adapters : plastic L code H2291(Dehydrator side)
4x Quick release union elbow : code H22106 (Cables side)
4x Adapters for cables connectors : code H0905 (1/8” thread)