Explosion-Proof Computers

What is an Explosion-Proof Computer?

Explosion-proof computers, also known as doghouse computers and hazardous area computers, are a vital resource for owners and operators working within the oil and gas industry. These computers are able to operate in potentially hazardous conditions in which combustible dust and flammable gas or vapors can cause malfunctions and explosions. Laversab Oilfield produces and sells a variety of explosion-proof computer models that can operate safely and effectively even in the most challenging environments. These computers are regularly tested using such testing methods as HALT (Highly Accelerated Life Test) and HASS (Highly Accelerated Stress Screen), along with environmental chambers located at our Sugar Land, TX facility. These state-of-the-art tests ensure that our products continue to provide long-term reliability when customers deploy them in a variety of oilfield situations.

As a further testament to our commitment to customer service, Laversab Oilfield is willing and able to customize your explosion proof computer/doghouse computer/hazardous area computer to fit our customer’s specific needs. Read below to find out more about our outstanding explosion proof computer models. In addition to our exemplary line of products, we offer short delivery times, quick repairs and cost-effective equipment upgrades to older models. Contact a nearby Laversab Oilfield location for more information.


2800 Series Computers: Class 1 Div 2 Rig Floor Computer

One of Laversab Oilfield’s most popular hazardous area computers, the 2800 Series Computers is ideally suited for Class I, Division 2 or Zone 2 classified locations. This compact, fully sealed computer has received a NEMA 4 classification, thereby providing it a degree of protection to personnel against access to hazardous parts. In addition, this computer is able to operate under severe vibration and has an extended operating temperature range of -40°C to +60°C. The 2800 Series Computers comes in a variety of sunlight-readable displays ranging from 10” to 19” and includes customer driven features like VESA mounting, back and bottom-mounted connectors, and a DC-operation version designed for trucks and work-over rigs. All models are available with wireless Ethernet, RS232 and USB options.

  • HazLoc Computer: Model 2800 (Legacy)

    Laversab Model 2800 is a Class 1 Division 2 certified HazLoc workstation designed for legacy systems. This unit includes a 15” touchscreen and options for a 2.4GHz or 900MHz wireless radio.

    Customer-specific software can be installed before or after delivery. However, Laversab recommends the Models 2804 / 2852 / 2860 for new requirements.


Model 3200: Zone-1 Driller’s Display Unit

The Model 3200 DDU (Driller’s Display Unit) is a doghouse computer that has reserved certification from several organizations, including ATEX Zone 1 and IECEx in Europe, GOST in Russia and NEPSI in China. With its ultra-compact 10.4” color screen, the Model 3200 is able to display critical MWD (Measuring While Logging) parameters from a “Safe Area” decoding system. The unit is compatible with nearly all MWD decoding systems, thereby allowing users to “drop-in” the DDU without the need for additional training. In addition, it is a fully sealed NEMA 4 classified product that can be used in a wide range of dangerous environments, including ones under severe vibration and those with a temperature range between –20°C to 50°C.

  • MWD Surface System: Zone 1 Display

    Laversab Model 3200 is a Zone-1 certified Driller’s Display Unit (DDU). This ultra-compact unit is fully sealed and ready to be used on the rig. It typically pairs with a Decoder that resides in the safe area.

    The Model 3200 displays critical MWD telemetry information including Tool Face, Inclination, Azimuth and more; the 3200 can also be customized to display WITS0 data.  The ATEX/IECEx Zone 1 certifications make this unit suitable for both Offshore and Onshore deployment.


Model 4100: MWD Surface System

The Model 4100 is a Class I, Division 2 explosion-proof computer that is easy to operate and provides accurate mud-pulse decoding capabilities. This compact unit is best suited for rig floor situations and can be used as the tool interface for the downhole directional tool. Also, the computer’s wireless operation, which includes the xxMWD software suite, is compatible with most new and existing positive pulse MWD systems. The Model 4100 displays relevant information generated by the down-hole tool and sends it through a wireless interface to a safe-area laptop PC for the purposes of viewing, logging and analyzing the data.

  • MWD Surface System: Model 4100 (Legacy)

    Laversab Model 4100 is a Class 1 Division 2 surface system designed for Legacy systems. The unit comes with an XXT decoder and software suite and is capable of decoding, displaying, and wirelessly transmitting downhole data.

    The system includes a Tool Programming Interface to set up and program the downhole tool before a job.

    For new requirements, Laversab recommends the Models 4104/4152/4160.