Global Instruments Salatwada, vadodara, Gujarat

The Model 20DAX40 manometer is designed for the measurement of pressures, vacuums or differential pressures with a maximum operating pressure of 400 PSI. This manometer is of very rigid construction, designed primarily for high line pressure operation. Only carefully selected, fully annealed glass tubing is used. The manometer scale is located to permit quick and accurate reading of the indicating columns. The U-tube type manometer is a primary basic standard of pressure measurement. Pressure measurements are accomplished by balancing a vertical head of indicating fluid with the pressure to be measured. As there are no cams, gears or levers to operate in the manometer; the readings obtained are accurate.

The Type 5000 PI Transducers is a compact, rugged and reliable two-wire pressure transmitter, expressly designed for industrial field service. This precision unit converts a signal pressure input into a precise 4-20 mA or 10-50 mA output. The lightweight housing includes a 1/4 NPT pressure port and 1/2 NPT conduit port for field wiring. Connections are easily accessible via top cover removal. Zero and span adjustments are available within the field wiring compartment for fine, on-site calibration adjustment. The Type 5000 pressure transmitter uses a unique, temperature compensated piezoresistive transducer, suitable for gauge pressure measurement of non-corrosive liquids and gases. The sensor has excellent dynamic response and is virtually insensitive to mounting orientation and ordinary industrial vibration. Mounting holes on the transmitter housing are arranged to permit direct pipe (2″) mounting for minimum installed cost.

The Marsh Bellofram Type 2000 is a highly robust E/P transducer with typical full-scale accuracy of 0.1%, designed to provide precise electronic pressure control of humid (non-condensing) and oil-laden process gases within harsh industrial environments. With a unique design that incorporates a patented, hermetically sealed piezoceramic Dimorph and isolated electronics, the Type 2000 pressure transducer regulates an incoming supply pressure down to a precise output that is directly proportional to an electrical control signal, with available pressure ranges to 120 PSIG. In addition, the Type 2000 features a top-mount cover, which provides access to field-configurable inputs and outputs, direct/reverse acting/ranging, which allows the transducer to regulate to maximum output at minimum input; and split/full ranging capabilities. Units also feature IP66 environmental sealing for added durability. The uniquely rugged construction of the Type 2000 facilitates exceptional performance and longevity, making it ideal for use within corrosive environments. This design also eliminates many of the performance issues seen in other industry piezoceramic pressure transducers, such as electronic range of authority, arcing, silver electrode migration, electrode micro cracking, de-poling, and low voltage-to-work density.

The Marsh Bellofram Type 1500 electro-pneumatic transducer converts an electrical signal to a proportional pressure output. It provides low-cost precision electro-pneumatic control to actuators, valves, positioners, final control elements and high-flow controls. Occupying a small overall footprint, Type 1500’s compact size and accessibility to ports and adjustments allow the unit to be installed in space-constrained locations or in a manifold for multi-device control. DIN rail and manifold assemblies are available in kits that provide three, five or ten mounting points. An integral pneumatic volume booster is included to provide high flow capacity to provide high flow capacity. They also feature low air consumption, as well as external zero and span adjustments. Their orifice is also field accessible. (See specifications for flow data). Type 1500 IP and EP Transducers are available with a variety of electrical connections, including conduit 1⁄2″ NPT or BSPT, Terminal Block, Hirschmann® Connectors (DIN 43 650-A). They further feature supply and output ports on front and back of unit. Electrical conduction connections meet CE requirements. Units are available with FM, CSA and ATEX versions for hazardous area use. A NEMA 4x version, excluding the terminal block, is also available with FM and CSA approvals. Bellofram has supplied many thousands of them since their 1965 introduction. Bellofram’s 0.38 and 1.7 sq. inch effective area diaphragm cylinders combine the performance of the diaphragm cylinder with small size. Two different stroke options are available in each size, with either flush or extended rods on 0.38 sq. inch cylinders. Only spring return varieties are available.

Type 1000 IP and EP Transducers are electro-pneumatic transducers that reduce a supply pressure to a regulated output pressure directly proportional to a converted electrical input signal. The Type 1000 accepts a wide range of supply pressures, ranging from a minimum of 3 psig (0.2 BAR) above the maximum output up to 100 psig (6.9 BAR). An integral pneumatic volume booster provides high flow capacity (up to 12 SCFM/339 slpm). Model selections include general purpose, NEMA 4X Type, extended range, high relief, intrinsically safe, and explosion proof. The 4-20 mA input, 3-15 PSIG output model can be recalibrated to provide 3-9 PSIG or 9-15 PSIG output for split ranging applications.

Marsh Bellofram Small Bore Diaphragm Air Cylinders are actuators made from elastomers, engineered metals and fabrics. They require no lubrication and are virtually frictionless and economical. They can be used to provide lifting, clamping, pushing, coining, turning and other linear force or actuation motions in many applications. The development of the long stroke rolling diaphragm for dynamic sealing has been field-proven as a reliable solution for many applications requiring low friction, no lubrication, low leakage, wide temperature variations and low total cost of ownership. The popularity of the rolling diaphragm as a sealing means led to many requests for a standard line of “off the shelf” diaphragm cylinders; single and double acting, short and long stroke with a wide selection of effective areas. To meet these requests, the long stroke rolling diaphragm cylinder was developed; Marsh Bellofram has supplied many thousands of them since their 1965 introduction. Bellofram’s 0.38 and 1.7 sq. inch effective area diaphragm cylinders combine the performance of the diaphragm cylinder with small size. Two different stroke options are available in each size, with either flush or extended rods on 0.38 sq. inch cylinders. Only spring return varieties are available.

Marsh Bellofram Type 3510 single and Type 3520 double loop electro-pneumatic servo pressure controllers combine the advantages of reliable solenoid valves and digital control, housed in a rugged, weatherproof enclosure. Available with a local keypad programming option or RS-485 digital communications for PLC or PC control, these precision controllers allow the user the ability to set and extract data directly from the transducer with a PC or automation system, making for some of the most precise, accurate, and reliable devices available on the market. With a forward flow of 1.25 SCFM at 100 psi, Types 3510 and 3520 can be used alone for many applications or combined with a volume booster for flows in excess of 2,000 SCFM. Various pressure output ranges are available from 29″ Hg vacuum to 600 psig. Standard accuracy is ±0.5% full scale or better. Enhanced accuracy version is ±0.25% full scale or better. A four-digit display of the output pressure is available with the keypad model.

Marsh Bellofram designs and manufactures a complete line of servo pressure controllers, including both traditional and analog circuit card models, to suit a variety of OEM, industrial, HVAC and medical device and equipment process control applications.

Pressure Sensor Modules from Meriam Process Technologies are available in a several types and ranges to provide the ultimate in flexibility and convenience for portable calibration standards. Calibration coefficients for all modules are stored in non-volatile sensor module memory. This means any pressure module can be used in any Meriam MFT without manual programming of coefficients. Engineering units, including PSI, centimeters or inches of H2O (at 4°C, 20°C, or 60°F), kg/cm2, kPa, mBars, Bars, millimeters, inches of Hg (at 0°C ref. temp) and oz/in2 are all selectable from the MFT keypad.

The Electro-Pneumatic Positioner GT-100L is used for operation of pneumatic linearvalve actuators by means of electrical controller or control system with an analog output signal ofDC 4 to 20mA or splitranges.

Type 72 and Type 72HR Positive Bias Booster Pneumatic Air Relays are positive bias booster pneumatic relays are used when high flow capacity is required. Offered in four adjustable ranges with exceptionally high flow capacity of up to 50 SCFM (1400 LPM) with minimal pressure droop, output pressure of the Type 72 & Type 72HR are accurately maintained under varying flow conditions by means of an aspirator tube, which adjusts the air supply valve opening in proportion to flow velocity. A balanced supply valve utilizing a Bellofram patented internal rolling diaphragm makes the relay virtually immune to changes in supply pressure, while offering reliable performance over millions of cycles. Simple design makes maintenance easy, and the relay can be serviced without removing it from the line. The standard signal-to-output ratio is 1:1, but 1:2, 1:4 and 1:6 ratios are available on special request. An optional high-relief version (72HR) is also available.

Meriam manufactures the widest range of Averaging Pitot Tubes for gases, liquids and steam with bi-directional flow capability. Under the Accutube brand name, there are four standard models; Inline, Insertion, Flanged and Wet Tap which can provide a flow solution for your toughest applications. To provide the complete flow solution that meets your specific needs, we can provide DP or Multivariable transmitters from the brand of your choice, or we will recommend the best fit for your application. These transmitters can be installed on the Accutube and configured to your specific flow requirements here at Meriam by qualified technicians, reducing your expense and time .

Meriam raised-face orifice flange unions are designed to provide a convenient, accurate method for installing orifice plates. They incorporate accurately positioned pressure taps for connecting the flow measuring instruments. This eliminates the requirement of locating pressure taps in the field. Improper location of these taps will result in poor accuracy of the flow measuring system. These built-in taps also reduce field installation labor necessary for welding, drilling and/or tapping pressure taps on the flow line itself. Meriam orifice flanges are provided complete with nuts, bolts, gaskets and plugs for installation with no other parts required. Pair a Meriam orifice plate with an orifice flange to provide a convenient, accurate method for installing orifice plates.

The most common primary flow element is the concentric orifice plate, often called the “sharp-edged” orifice plate. Its main advantages are: low cost, accuracy, ease of installation, variety of construction material and quick delivery. Much test data has been compiled about orifice plates and, with the necessary information, an exacting design can be made providing for excellent metering accuracy. Engineered for each application, Meriam Orifice plates are precision bored to exact dimensions with a sharp upstream edge to ensure accuracy. Orifice information is stamped on the unique handle. This handle is designed to facilitate storage of the plate without damage to the orifice bore. Pair a Meriam orifice plate with an orifice flange to provide a convenient, accurate method for installing orifice plates.

Considered the most common primary element, Meriam’s concentric orifice plates are precision bored to exact dimensions with a sharp upstream edge to ensure accuracy. Pair this up with an orifice flange to provide a convenient, accurate method for installing orifice plates

Considered the most common primary element, Meriam’s concentric orifice plates are precision bored to exact dimensions with a sharp upstream edge to ensure accuracy. Pair this up with an orifice flange to provide a convenient, accurate method for installing orifice plates

The Marsh Bellofram Type 50/Type 50 NACE Precision Filter Air Set Regulators are reliable, precision filter air set pressure regulators, designed for instrumentation and general purpose use in both standard (Type 50) and corrosive environments (Type 50 NACE). The Type 50 NACE complies with NACE material requirement #MR-01-75 for sulfide stress cracking-resistant metallic materials for oil field equipment. The rugged design and construction of the Type 50 includes the incorporation of die cast aluminum housings that are finished with epoxy paint for added protection against scratching, weathering and other challenging environments. Careful design and use of quality materials ensure long, trouble-free operation, even in the most difficult of industrial environments. The user-adjustable Type 50 series offers superior pressure regulation vs. flow characteristics, excellent stability, repeatability and built-in filter with dripwell. A rubberized, soft-seat valve stem provides positive shut-off and “forgives” dirt or other foreign matter. An aspirator maintains downstream pressure and compensates for droop when high flow occurs. A gauge port facilitates convenient gauge installation and can be used as an additional full flow outlet. In addition, Type 50 NACE regulators include an easily serviceable and self-cleaning 316 stainless steel mesh filter that can be side, panel, pipe or through-body mounted.

The MFT 4000 Digital Calibrator is a base unit for pressure calibration work with selected NIST traceable sensor modules & integral voltage/current meter. The MFT 4010 Digital Calibrator with HART® is a base unit for modules and full device specific HART® communications. Quick Cal displays HART® PV and AO along with MFT’s NIST traceable measurements. User can identify needed trim(s) and access the trim function(s) from same display. Smart Trim allows selection of analog or digital trims without navigating through menu trees. Documenting included. Documenting memory stores up to 200 HART® configuration files and over 100 calibration results (as-found & as-left data [up to 21 points each], time/date info, tag). Communicate with PC via DB-9 connector. Available modules include differential, gauge, vacuum and absolute pressure as well as temperature calibration, and voltage/current calibration. A voltage and current meter is integral to the base unit. All HART® field devices can be configured, polled, and trimmed using HART® communications. Device Specific commands for supported devices are included with the MFT. Each unit includes: CE Mark, Test Lead Kit, HART Leads (Model 4010), Batteries, Universal Power Adapter, RS-232 Serial Cable and Users Manual.

The meriGauge® plus is a break-through digital pressure gauge with modular sensors. This new gauge is Meriam’s latest offering in the pressure measurement line. The meriGauge® plus is unique in that it features the capability to support detachable sensors to meet all of your range requirements. This modular system allows you to purchase only the pressure ranges you need, for less than the cost of a stand-alone pressure gauge. To add to the efficiency of this gauge, the small sensors contain the calibration and they are easily exchanged for recalibration so the gauge itself is never “out for recalibration.” The meriSense sensors have been specifically designed to compliment this product and will be compatible with all of Meriam’s future measurement and calibration equipment. They are available in various types and ranges. The sensor label indicates the type of range. The meriSense sensors support 32 pressure units.

The Meriam Model 30EBX25 and 30EFX25 well type manometer are direct reading manometers designed for process, general purpose production testing, or laboratory measurement of pressures, vacuums or differential pressures. Designed for a maximum operating pressure of 250 PSIG,* these instruments can also be used to measure flow, tank level, and pressure drop or distribution across operating equipment. Raised wells can be furnished so positive and negative pressures or reversing flow can be indicated without changing the pressure connections. Various mounting styles to satisfy installation requirements are available. *Model for 500 psi is 30EBX50 Well Type Manometer Construction The manometer body is of aluminum channel construction. Stainless steel end blocks, for packing the glass indicating tube, are screwed to the body. The 7/16 outside diameter glass tubing is yoke packed with viton gaskets at each end block and is supported at spaced intervals to prevent tube distortion. The welded stainless steel manometer well has a large cross section and is readily removable for greatest ease in cleaning. Two 1/4 female pipe connections are provided on the top side of the well; one outlet is normally used for the high pressure manometer connection, while the other, provided with a plug, is used as the well fill connection. The unit scale, located directly behind the glass indicating tube, extends the full width of the instrument body and is graduated on each side of the indicating column. This scale has a white, non-glare satin background with black graduations and figures, and is compensated for liquid level change within the manometer well. The scale is adjustable for zero indicating fluid level by means of a non-slip, flexible shaft adjustment located in the lower end block and operated from the front of the instrument. A transparent plexiglass cover protects the unit from dust and moisture. All exterior portions of the manometer are finished in textured, black urethane paint. Standard pressure connections in the upper end block and at the manometer well for connecting the instrument are 1/4 female pipe connections. Suitable drain, fill and vent plugs are furnished with each unit.

The U Type Manometer is a versatile, economical instrument and is the primary basic standard of pressure measurement. Pressure measurements are accomplished by balancing a vertical head of indicating fluid with the pressure to be measured. As there are no cams, gears or levers to operate in the manometer, the readings obtained are always accurate. Mounting holes are provided in the frame for mounting to a wall, column or other suitable structure. The clean-out head at the top of the instrument seals the indicating tube legs and also provides for the external pressure connections to the manometer. The manometer head fastens to the body by a single nut and is quickly and easily removed when necessary. A 1/4″ female pipe connection is provided out the left and right sides of the clean-out head as standard. Pressure connections at rear or top of head can be furnished when specified. Manometer clean-out heads of stainless steel or PVC are available for special corrosive applications.  

Inclined Well Type Manometer for wall mounting is offered with scales from 20″ to 60″ long in differential ranges from 2″ to 20″. This economical and durable instrument fills the high sensitivity and accuracy requirements for low differential pressure ranges at operating pressures up to 350 PSI. Inclined manometers provide greater readability by stretching a vertical differential along an inclined indicating column, giving more graduations per unit of vertical height and increasing the instrument sensitivity and accuracy. Inclined manometers frequently have scales graduated to hundredths of an inch. The Model 40HEX35 is often used to indicate differential across Meriam Laminar Flow Elements, Accutubes and Orifice Plates in gas flow applications. The removable well is bolted to the back plate and connected to the glass tube through the lower end block. All pressure connections are 1/4″ female pipe thread. The scale with satin background, bold black figures, and precision graduations spans the full channel width behind the indicating tube. Scale and tube are protected by a transparent cover. Each Model 40HEX35 is individually calibrated and the angle of inclination is set relative to the instrument level mounted above the channel. The instrument finish is black textured urethane.

The Model 20DAX40 manometer is designed for the measurement of pressures, vacuums or differential pressures with a maximum operating pressure of 400 PSI. This manometer is of very rigid construction, designed primarily for high line pressure operation. Only carefully selected, fully annealed glass tubing is used. The manometer scale is located to permit quick and accurate reading of the indicating columns. The U-tube type manometer is a primary basic standard of pressure measurement. Pressure measurements are accomplished by balancing a vertical head of indicating fluid with the pressure to be measured. As there are no cams, gears or levers to operate in the manometer; the readings obtained are accurate. The manometer body has an aluminum channel to which stainless steel and blocks are connected. The wetted parts are type 304SS. The glass tubing is gland packed with viton gaskets at each end block and is supported at spaced intervals to prevent tube distortion at elevated pressures. In place of the conventional U-tube of one continuous glass length, two straight length individual tubes are used in this manometer. To connect the two vertical glass tube legs to form the U, the lower manometer end block is cross-drilled. Standard pressure connections are 1/4 inch female pipe out the top of the upper end block.

The Meriam M334 is a state of the art, highly reliable, rugged and easy to use milliamp calibrator. It has the functions necessary to perform all the required maintenance and calibration tasks of virtually any 4-20mA loop. It provides source and read milliamp functions along with power and measure and two wire transmitter simulations. In addition it can measure DC Voltage for troubleshooting power supplies.