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  2. Total dissolved solids - Wikipedia

    en.wikipedia.org/wiki/Total_dissolved_solids

    Total dissolved solids ( TDS) is a measure of the dissolved combined content of all inorganic and organic substances present in a liquid in molecular, ionized, or micro-granular ( colloidal sol) suspended form. TDS are often measured in parts per million (ppm). TDS in water can be measured using a digital meter.

  3. Trust Domain Extensions - Wikipedia

    en.wikipedia.org/wiki/Trust_Domain_Extensions

    Trust Domain Extensions. Intel Trust Domain Extensions ( TDX) is a CPU -level technology proposed by Intel in May 2021 for implementing a trusted execution environment in which virtual machines (called "Trust Domains", or TDs) are hardware-isolated from the host's Virtual Machine Monitor (VMM), hypervisor, and other software on the host.

  4. Smoke detector - Wikipedia

    en.wikipedia.org/wiki/Smoke_detector

    A smoke detector is a device that senses smoke, typically as an indicator of fire. Smoke detectors/Alarms are usually housed in plastic enclosures, typically shaped like a disk about 150 millimetres (6 in) in diameter and 25 millimetres (1 in) thick, but shape and size vary. Smoke can be detected either optically ( photoelectric) or by physical ...

  5. List of abbreviations in oil and gas exploration and ...

    en.wikipedia.org/wiki/List_of_abbreviations_in...

    AGT – (1) agitator, used in drilling. AGT – (2) authorised gas tester (certified by OPITTO) AGT – (3) Azerbaijan – Georgia – Turkey (a region rich in oil related activity) [3] AHBDF – along hole (depth) below Derrick floor. AHD – along hole depth. AHU – air handling unit. AICD – autonomous inflow control device.

  6. Apollo Guidance Computer - Wikipedia

    en.wikipedia.org/wiki/Apollo_Guidance_Computer

    The first eight, called basic instructions, were directly accessed by the 3-bit op. code. The final three were denoted as extracode instructions because they were accessed by performing a special type of TC instruction (called EXTEND) immediately before the instruction. The Block I AGC instructions consisted of the following: TC (transfer control)

  7. Piping and instrumentation diagram - Wikipedia

    en.wikipedia.org/wiki/Piping_and_instrumentation...

    A piping and instrumentation diagram (P&ID) is defined as follows: A diagram which shows the interconnection of process equipment and the instrumentation used to control the process. In the process industry, a standard set of symbols is used to prepare drawings of processes. The instrument symbols used in these drawings are generally based on ...

  8. Torpedo Data Computer - Wikipedia

    en.wikipedia.org/wiki/Torpedo_Data_Computer

    Torpedo Data Computer. U.S. Navy Mk III Torpedo Data Computer, the standard US Navy torpedo fire control computer during World War II. Later in World War II (1943), it was replaced by the TDC Mk IV, which was an improved and larger version. The Torpedo Data Computer ( TDC) was an early electromechanical analog computer used for torpedo fire ...

  9. EN 54 - Wikipedia

    en.wikipedia.org/wiki/EN_54

    Look up en-54 or en54 in Wiktionary, the free dictionary. The EN 54 Fire detection and fire alarm systems is a series of European standards that includes product standards and application guidelines for fire detection and fire alarm systems as well as voice alarm systems. The product standards define product characteristics, test methods and ...