FEATURES
- Designed to Meet Class 1, Div 2
- Purge with automatic
pressure system
- Water Proof
- Dust Proof
- Corrosion Resistant
- Extreme Temperature Proof
- Shock and Vibration Proof
- Built-in NEMA 4X (IP66) Keyboard with pointing device
- Easy-access Interior
- LCD screen shielded by a
Tempered Glass Protective
Overlay

CONTACT

HEADQUARTERS
11529 Sun Belt Ct.
Baton Rouge, Louisiana  70809

Phone
800.223.8050
International 001.225.298.0300
Fax
225.297.2440

E-mail
sales@vartechsystems.com

Website
www.vartechsystems.com

_____________________

Regulator Body
Zinc w/ Enamel Finish

Regulator Handle
Polycarbonate

Enclosure Pressure Gauge
Alum. w/ Enamel Finish

Tube Fittings
316 SS Forged Body

Tubing
316 SS 1/4" .035 Welded

System Nameplates
Silk screened Lexan® & SS

Fastener Hardware
Alum. & Stainless Steel

Mounting Plate
316 14 Ga #3 Brush SS

EXP Pressure Switch Body
Anodized Cast Aluminum

Enclosure warning

Nameplate
Silk screened SS

Lexan® is a registered trademark of the
General Electric Company.

 

The VT900ESW is a NEMA 4X (IP66) system designed to meet Class 1, Div 2
protection. The purge system uses an automatic pressure switch to
automatically trigger alarms in case of pressure loss.
Ideal for extreme environments, the VT900ESW industrial computer and its
predecessors are currently in use in coal mines, rock quarries, oil rigs, chemical
manufacturing plants and production floors which are located in Class 1,
Division 2 environments. The VT900ESW is engineered for extremely rugged
conditions, both indoors and out.

Video
19" active matrix TFT LCD display, 350 nits, 1280 x 1024 SXGA, LCD screen
shielded by a Tempered Glass Protective Overlay

Processor
T4500 2.30 GHz 800MHz FSB Intel Dual Core

BIOS
Award PnP 4MB Flash ROM BIOS

O/S
Windows XP Professional (optional Windows Embedded Standard)

System Memory
SO-DIMM DDRII 667/533/400 2 GB

Chip Set
Intel® GME965+ICH8M/EM

VGA
Intel ®GME965 GMCH Gen4 integrated graphics engine

Hard Drive
500 GB SATA High Performance

PCI Expansion
Optional PCI Express
Optional 1 or 2 32 bit PCI Slots

Power Input
100-240VAC 1.5A 50/60 HZ

Power Connector
Standard Power Inlet (IEC320 C14)

Dimensions
20" W x 18" D x 11" H
DVD Drive (E-IDE / ATAPI)
DVD-R, DVD+R, DVD-RW, DVD+RW, DVD
-R DL, DVD+R9, CD-R, CD-RW

I/O Ports
2 RS-232 COM port
(Optional RS-422\485 port)
2 LAN ports
6 USB 2.0
2 Audio jacks
Firewire Ports
2 x IEEE 1394a

Enclosure
Easy-open, lockable door NEMA 4X (IP66), 316 stainless steel Anodized aluminum heat sink

Keyboard/Mouse
Industrial silicone rubber keyboard with integrated pointing device

Environmental/Thermal
NEMA 4X (IP66)
waterproof and dust proof
-20°C to 55°C (-4° to 131°F), IP67

Construction
Enclosure Only:
20" H x 24" W x 17" D, ~75 lb
Purge Kit Only:
15" (H) x 11" (W) x 7.5" (D), 15 lb
Unit with Computer: 96.8 lb
Shipping Weight w/ Computer: 117 lb

Purge System Mounting to Side (L/R), Top or Bottom

Windows Embedded Standard

_____________________________________________________________

Purge System w/ Pressure Switch (Class 1, Div 2 Protection)

This Rapid Exchange® purging system operates on a supply of
compressed instrument air or inert gas. It regulates and monitors
pressure within sealed (protected) enclosure(s), in order to remove and
prevent remove and prevent flammable gas or vapor accumulations. The
system accomplishes four air exchanges and maintains a "safe" (0.25")
pressure. These processes reduce the hazardous (classified) area rating
within the enclosure(s), in accordance with the NEC - NFPA 70, Article
500, NFPA 496 and ISA 12.4.

Weight
15lb

Temp. Range
-20F to 120F

Supply Pressure Range
80 - 120 psi

Capacity & Filtration
1.5 oz @ 20 Micron

Supply requirements
Clean air or inert gas

Safe Pressure Setpoint
.25"

Safe Pressure Flow Rate
0.1 - 3.5 SCFH - Enclosure integrity determines actual flow rate

Exchange Pressure
3" - 5"

Exchange Flow Rate
4 SCFM / 240 SCFH - With regulator set to 60 psi min. during exchange

Exchange Time
1min/ft3

System Supply Port
1/4" FPT

Enclosure Supply Fitting
1/4" tube fitting

Enclosure Reference Fitting
1/4" tube fitting

Switch Setting (Decr)
.15" ± .02"

Switch Conduit Port Size
1/2" FPT

Switch Contact Rating
120 VAC, 15A

Dimensions
15" (H) x 11" (W) x 7.5" (D)
Height & Width dimensions reflect mounting plate measurements. Depth
dimensions reflects overall measurement of system, including components.

Mounting
Side (L/R), Top or Bottom

OPERATION

In accordance with system instructions, start-up requires air supply to be engaged
and enclosure power to be de-energized. The enclosure protection vent must be
tested and the enclosure(s) must be sealed. The enclosure pressure control valve
is then used to set a safe reading on the enclosure pressure indicator. When safe
pressure is stable, the Rapid Exchange® control valve must be fully engaged. Upon completion of the Rapid Exchange® cycle, (5 minutes minimum) the Rapid
Exchange® control valve must be disengaged to return to a safe enclosure
pressure. Power can then be energized to the protected enclosure(s). Loss of safe
pressure requires immediate attention, unless power is de-energized. The purge
system includes an explosion proof differential pressure switch with form "C"
contacts for audible of visual alarm systems.