mud pump pressure sensor quotation
Crown Oilfield Instrumentation’s mud pressure gauges are extremely accurate and widely used in the harshest drilling environments. Each of our mud pressure systems are designed to meet or exceed API specifications, and you can count on a Crown mud pump pressure gauges to stand up to whatever the oil and gas industry can throw at them. Our mud pressure systems monitor the pump pressure for a variety of pumps and applications to ensure that you are getting the most out of your drilling fluids. Our single pointer systems use a 6" aluminum cast gauge to detect the slightest pressure changes and come with three different sensors: diaphragm gauge protector, 1:1 piston separator and 4:1 debooster gauge protector. The Crown compound pointer system uses unique pointer design that affords the reader to see the smallest pressure changes at a glance. Crown"s unitized pressure gauges are gauge and protector in one and can be mounted on a standpipe and seen up to 60 ft. away. Crown’s pressure gauges are designed, developed and tested to be durable, reliable and dependable, and all systems can stand up to the rigors of the oilfield. Manufactured in the US, you can depend on our pressure gauge systems to provide years of service.
Want to get a great deal on wholesale wholesale mud pressure sensor online? The good news is that you have landed on the right marketplace. Browse through a wide range of pressure sensors including oil pressure senders, pressure transducers, pressure differentials, wireless pressure sensors, digital hydraulic pressure gauges, differential pressure sensors, and many more on Alibaba.com. Our comprehensive collection gives you the freedom to find the ideal product that matches your requirements. In addition to quality products, you"ll also enjoy discounts when buying differential pressure sensors during our numerous promotional campaigns. Finally, consider filtering the items with features such as complimentary shipping and returns, so you get the full value of your time spent shopping online!
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Matherne Instrumentation’s single pointer pressure system is designed to provide a fast and precise check of pump pressure. This system can help detect mud pump operational problems, such as washed out drill pipe or bit nozzle problems. The system consists of a 6” pressure indicator, a standard 50 ft. high pressure hose, and is designed for use with a diaphragm protector, piston isolator, or debooster to separate well fluids from the system’s internal parts.
The convenient mounting design allows the pump pressure gauges to be mounted in a driller’s console, in a weight indicator box, locally on the mud pump, or stand alone. The 6” dial face is available with coarse line increments for pump pressure applications and fine line increments for choke applications.
To learn more about the benefits of our pump pressure gauges and indicator systems, we welcome you to contact our team! We"re proud to assist oilfield operations throughout Odessa, TX; Midland, TX; Houston, TX; Lafayette, LA; Houma, LA; Pittsburgh, PA; and Williston, ND.
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... of the XP2i is designed to replicate the dimensions and pressure connections of the most common test gauges mounted in portable cases. It is a drop in replacement for a Wally Box Pressure ...
The Digital Pressure Gauge DPG10 provides precise pressure measurement. The measurement pressure ranges start from -0.1 – 0 MPa and up to 0 – 250 MPa. The DPG10 is robust, ...
521 is Viatran"s state of the art hammer union pressure transmitter with industry exclusive features that were developed in direct response to requests from the field. Included in these features is a voltage powered shunt cal, ability to calibrate and track pressure spikes using HART software and packaged in a patented housing which can withstand extreme vibration and abusive impact and still perform to specification.
The field adjustable Model 470 WECO® Hammer Union Pressure Transmitter from GP:50 is ruggedly designed and engineered to effectively address demanding shock and vibration and installation challenges within the oilfield environment. Units are directly compatible with WECO® 2”-1502, 2202, 2002 or 602 wing union fittings. The field adjustment option provides for zero and span adjustments as well as rangeability. This field adjustable option eliminates the need to rescale your panel meter when replacing transmitters and allows for fewer pressure ranges to stock. Learn More
The Model 136/236/336-AI/AF from GP:50 is a family of highly accurate, digitally compensated differential pressure transducers. Model 136/236/336-AI/AF measures differential pressure ranges as low as 20” WCD and line pressures up to 1000 PSID (69 BAR) in a compact size. Customers may also choose from among multiple accuracy, digital output, process and electrical connections. Please consult the factory for details. Learn More
The Model 136/236/336-AI/AF from GP:50 is a family of highly accurate, digitally compensated differential pressure transducers. Model 136/236/336-AI/AF measures differential pressure ranges as low as 20” WCD and line pressures up to 1000 PSID (69 BAR) in a compact size. Customers may also choose from among multiple accuracy, digital output, process and electrical connections. Please consult the factory for details. Learn More
Range:0 to 2 thru 0 to 15K PSIA, PSIG, PSIV, PSISG Options (14 mBAR thru 1,034 BAR) *Ranges below 1,000 PSI require oil-filled sensor, consult factory.
Model 7100 flight-heritage, low level pressure transducer from GP:50 is designed to provide high-accuracy measurements of up to ±0.1% FSO. Its flight heritage, spanning 25 years, makes it ideal for use within demanding aerospace and defense applications, including those in which higher shock and vibration levels may be present. Its compact and lightweight design facilitates ease of installation within space constrained environments. Learn More
The industry exclusive Model 170/270/370 WECO® Hammer Union Pressure Transmitter from GP:50 is ruggedly designed and engineered to effectively address demanding shock and vibration and installation challenges within the oilfield environment. Units are directly compatible with WECO® 2”-1502, 2202, 2002 or 602 wing union fittings. They are also available in multiple outputs, ranges, electrical connections, and area approvals to meet specific requirements. Buy OnlineLearn More
The Model 8200 series from GP:50 is a flight heritage, high level pressure transducer. Digitally corrected to provide high-accuracy pressure measurements with a proprietary sensor design for added zero stability for commercial aviation, military, aerospace, UAV, satellite, and defense
automation, test stand, and OEM applications. Its rugged stainless steel design offers high corrosion resistance in pressure ranges from 0-25” WC (69 Mbar) to 30K PSI (2068 bar). Learn More
Model 241/341 from GP:50 is our most accurate pressure transducer. Designed specifically for aerospace and automotive test stand applications, it is 5x tighter through temperature than standard industrial transmitters with a 0.20% FSO / 100 °F thermal stability. More than 25 years of field expertise went into the design of our pressure transducer for exceptional reliability. The compact, corrosion-resistant, all-welded stainless steel design of the Model 241/341 offers ease of installation within space constrained environments. Static accuracy is available to ±0.05% FSO, with a total thermal error of 0.25% FSO over the compensated temperature range. Learn More
Model 241/341 from GP:50 is our most accurate pressure transducer. Designed specifically for aerospace and automotive test stand applications, it is 5x tighter through temperature than standard industrial transmitters with a 0.20% FSO / 100 °F thermal stability. More than 25 years of field expertise went into the design of our pressure transducer for exceptional reliability. The compact, corrosion-resistant, all-welded stainless steel design of the Model 241/341 offers ease of installation within space constrained environments. Static accuracy is available to ±0.05% FSO, with a total thermal error of 0.25% FSO over the compensated temperature range. Learn More
The Model 136/236/336 from GP:50 is a family of highly accurate, digitally compensated differential pressure transducers. Model 136/236/336 measures differential pressure ranges as low as 20” WCD and line pressures up to 1000 PSID (69 BAR) in a compact size. Customers may also choose from among multiple accuracy, digital output, process and electrical connections. Please consult the factory for details. Learn More
Model 536 CAN Bus from GP:50 is a compact, high-accuracy, digital output differential pressure transducer. This Model measures differential pressure ranges as low as 0-20” WCD (50 mbar) and line pressures up to 1000 PSID (69 BAR) in a compact size with improved thermal performance to meet the demands of the automotive, medical and laboratory test markets. The CAN Open protocol allows for multiple devices on a single bus, reducing installation time and cost. Learn More
Model 536 CAN bus from GP:50 is a compact, high-accuracy, digital output differential pressure transducer. This Model measures differential pressure ranges as low as 0-20” WCD (50 mbar) and line pressures up to 1000 PSID (69 BAR) in a compact size with improved thermal performance to meet the demands of the automotive, medical and laboratory test markets. The CAN open protocol allows for multiple devices on a single bus, reducing installation time and cost. Learn More
The Model 1002/1003 OEM Industrial Grade Pressure Transmitter from GP:50 is a family of lower cost, industrial grade OEM pressure transducers, featuring corrosion-resistant, all stainless steel wetted parts and housings. Series transducers are ideal for higher volume pressure monitoring applications, particularly where lower costs are required, yet where the need for precision measurement accuracy remains. Units are available with choice of 4-20 mA, 0 to 5 Vdc or 0 to 10 Vdc output, as well as various electrical connection and pressure port options. Typical
costs are required, yet where the need for precision measurement accuracy remains. Units are available with choice of 4-20 mA, 0 to 5 Vdc or 0 to 10 Vdc output, as well as various electrical connection and pressure port options. Typical applications for the Model 1002/1003-CA include off-road vehicle, HVAC/R, hydraulic and pneumatic control systems, pumps and compressors, and industrial engine pressure monitoring. Learn More
The Model 111/211/311 from GP:50 is a family of industrial grade pressure transducers. These strain gauge-based sensors are expressly designed to withstand the shock, vibration and pressure spikes common to most hydraulic and pneumatic control systems.
The highly rugged, all-welded stainless steel design of the Model 111/211/311 offers high corrosion resistance, making the sensors an ideal choice for demanding oil & gas, steelworks, rolling mills and process control applications. Units are further available with optional 10X proof pressure for extended worry-free service life within challenging environments. Learn More
The Model 216/316 from GP:50 is a family of low range, high line, differential pressure transducers. Their compact design incorporates GP:50’s own digital correction circuit technology, for high accuracy and extended service life across a variety of applications.
GP:50 model 540 CAN Bus digital output pressure transducer provides high resolution, accuracy, and improved thermal performance to meet the demands of the automotive, medical and laboratory test markets. The CAN Open protocol allows for multiple devices on a single bus reducing installation time and cost. Learn More
The Model 541 series is our most accurate CAN based pressure transducer. Designed specifically for test stand applications, the CAN Bus protocol provides high resolution, reduced noise and improved thermal performance. The compact, all-welded stainless steel design of the Model 541 offers ease of installation within space constrained environments. Static accuracy is available to ±0.05% FSO, with a total thermal error of 0.25% FSO over the compensated temperature range. Learn More
The Model 541 series is our most accurate CAN based pressure transducer. Designed specifically for test stand applications, the CAN Bus protocol provides high resolution, reduced noise and improved thermal performance. The compact, all-welded stainless steel design of the Model 541 offers ease of installation within space constrained environments. Static accuracy is available to ±0.05% FSO, with a total thermal error of 0.25% FSO over the compensated temperature range. Learn More
Model 188/288/388 from GP:50 is a family of all welded stainless steel miniature flush diaphragm pressure transducers. Their unique design incorporates a specialty flush process connection. This allows the transducer to effectively support higher viscosity fluid pressure measurements without port clogging or plugging. Their compact size allows for ease of installation within space constrained environments. Learn More
Model 188/288/388 from GP:50 is a family of all welded stainless steel miniature flush diaphragm pressure transducers. Their unique design incorporates a specialty flush process connection. This allows the transducer to effectively support higher viscosity fluid pressure measurements without port clogging or plugging. Their compact size allows for ease of installation within space constrained environments. Learn More
The Model 243AI/AN / 343AI/AN Series from GP:50 is an all-stainless steel, dual pressure and temperature transducer with 4-20 mA and 0-5 V output. Its compact design reduces I/O and insertion points where size and weight are considerations. Units are available in a variety of pressure and temperature ranges. Learn More
GP:50’s Model 540-IM Series offers CAN Bus protocol in a flush faced sensor design. GP:50’s CAN Bus protocol provides high resolution, reduced noise and improved thermal performance. The flush Inconel diaphragm provides maximum corrosion resistance and limits plugging associated with viscous media. Learn More
GP:50’s model 540-IM series offers CANbus protocol in a flush faced sensor design. GP:50’s CANbus protocol provides high resolution, reduced noise and improved thermal performance. The flush Inconel diaphragm provides maximum corrosion resistance and limits plugging associated with viscous media. Learn More
The Spike Series from GP:50 is a family of pressure transducers, specifically designed to withstand high-amplitude, high-frequency spikes that commonly occur in hydraulic pressure sensing applications. A proprietary sensor design provides increased over pressure protection as high as 10x. Learn More
Models 280/380 & 283/383 from GP:50 are a family of food and beverage grade tri-clamp process connection pressure transmitters. Their rugged design also meets 3A sanitary standards for dairy applications. Tri-clamp fitting sizes as small as 3/4” are available to provide reduced surface area exposure. The Model 383 is also available with optional high-temperature
Models 280/380 & 283/383 from GP:50 are a family of food and beverage grade tri-clamp process connection pressure transmitters. Their rugged design also meets 3A sanitary standards for dairy applications. Tri-clamp fitting sizes as small as 3/4” are available to provide reduced surface area exposure. The Model 383 is also available with optional high-temperature
The Model 250/350 AI/AN from GP:50 is a flow-thru pressure transmitter with a unique one-piece design. This flow-thru design provides a zero internal dead volume eliminating the need for piping tees or dead ended process connections. This design removes the possibility of trapped media or contamination and allows for a Clean In Place (CIP) device, providing for a sanitary, in-line solution for the pharmaceutical market especially rated for high pressure homogenization systems. Learn More
The Model 250/350 AI/AN from GP:50 is a flow-thru pressure transmitter with a unique one-piece design. This flow-thru design provides a zero internal dead volume eliminating the need for piping tees or dead ended process connections. This design removes the possibility of trapped media or contamination and allows for a Clean In Place (CIP) device, providing for a sanitary, in-line solution for the pharmaceutical market especially rated for high pressure homogenization systems. Learn More
The Model 311-IM from GP:50 is a flush mounted, hazardous location approved pressure transducer, designed to provide added reliability within slurry or thick process media applications. Their rugged, all-welded flush mounted design facilitates accurate measurements of corrosive or higher viscosity media, in applications where non-flush port sensors are otherwise
The GP:50 Model 210/310 series provides a high accuracy, low pressure sensor with high proof pressure. With ranges as low as 0 to 5” WC the standard unit provides proof pressures to 500 PSI with an optional ±0.05% FSO static accuracy. Learn More
The Model 1112/1113 from GP:50 is a family of submersible level transmitters, designed to provide high-accuracy measurements at a competitive price point. They are offered with an all stainless steel sensor
accuracy over its standard ranges of 500 to 20K PSID (35 to 1,379 BAR D). Improved accuracy is available to +0.20%. Their rugged, compact design incorporates a unique, non-filled strain gauge sensing technology. These attributes allow the Model 114/214/314 to effectively support high-cycle pressure measurement requirements, even in space constrained environments. An all stainless steel construction, without seals or o-rings, provides high-corrosion resistance. Optional intrinsically safe versions are also available for extreme applications. Learn More
compact, proprietary sensor design provides added zero stability required for commercial aviation, military, aerospace, UAV, satellite, and defense applications. Learn More
The Model 8300 series from GP:50 is a flight heritage, differential pressure transducer, providing high reliability with high accuracy. The compact, proprietary sensor design provides years of reliable measurement required for commercial aviation, military, aerospace, UAV, satellite, and defense applications. Learn More
Model 7900 series is a light weight flow-thru pressure transmitter designed for flight propulsion systems. The flow thru design is engineered to measure up to 0.1% of full scale pressure flow across the sensor and will stand up to the rigorous conditions associated with propulsion applications. Learn More
GP:50’s 7790 High Temperature series transducer provides pressure and temperature measurement up to +350 °F (+177 °C). The remote electronics provides a high level output of 4-20 mA or 0 to 5 Vdc while reducing the overall footprint by integrating pressure and temperature measurement in one device. Learn More
The Model 7500 from GP:50 is a rugged, sub-sea rated pressure transducer, tested to 30,000 FT sea water. The highly corrosion resistant design meets the tough environmental challenges of offshore oil and gas, Naval and
The 7500-M254 from GP:50 is a subsea pressure transducer, designed for use within remote or unmanned vehicles. Its open reference provides for sea depth pressure. When used in a non-conductive fluid bladder, the transducer also provides a gauge process pressure. In addition to ROV applications, the compact size and sea rated construction of the 7500-M254 make it ideal for the effective monitoring of subsea oilfield wellhead control systems. Learn More
Model 7500-M254 from GP:50 is a subsea pressure transducer, designed for use within remote or unmanned vehicles. Its open reference provides for sea depth pressure. When used in a non-conductive fluid bladder, the transducer also provides a gauge process pressure. In addition to ROV applications, the compact size and sea rated construction of the 7500-M254 make it ideal for the effective monitoring of subsea oilfield wellhead control systems. Learn More
The Model 7540 from GP:50 is a highly rugged differential pressure transducer, designed to address the tough environmental challenges of subsea and other marine service environments. It is designed for applications in which higher shock and vibration levels may be present providing high-reliability within extreme environments. Learn More
The Model 7540 from GP:50 is a highly rugged differential pressure transducer, designed to withstand the tough environmental challenges of subsea and other marine service environments. It is designed for applications in which higher shock and vibration levels may be present providing high-reliability within extreme environments. Learn More
The 7540-9000 Series from GP:50 is a high-accuracy subsea rated pressure transmitter with sea depth sensing reference offering more than 15 years of fieldproven pedigree. This Series features an API flanged process connection with Inconel inlay and all stainless steel housing with full seawater compatibility to 30K (9,144 M). The sea depth reference port provides either a differential output between the process pressure and sea depth, or a dual output between the process pressure and sea depth. A temperature output is also available. Learn More
5,000 PSI. Differential ranges as low as 0-2.5” WCD and a 500 PSI proof pressure are standard on all ranges. A custom subsea rated design allows operation to 23,000 FT SW. Learn More
The Model 7400 from GP:50 is a high-line, high-pressure, aerospace grade differential pressure transducer. Its true wet-wet all stainless steel design allows it to effectively measure both corrosive fluid and industrial gas pressures to high degrees of accuracy and repeatability.
Its optional 10X proof pressure and 10K PSI (689 BAR) line rating also facilitates its use within demanding aircraft engine and hydraulic systems. In addition to expanded ranges, a variety of pressure ports, electrical connections, outputs, and wetted part materials are available. Please consult the factory
The Model 543 Series from GP:50 is an all-stainless steel, dual pressure and temperature CAN Bus output transmitter. Its compact design reduces I/O and insertion points where size and weight are considerations. Units are available in a variety of pressure and temperature ranges, with support for both CAN Bus J1939 and CAN Open protocols. Learn More
GP:50’s Model 370-QX series is designed for High Pressure High Temperature (HPHT) well applications. This series is designed to fit the standard WECO® 2”- 1502 or 2”- 2002/2202 unions and operates at
a continuous process temperature to +350 °F (+177 °C). It offers reliable service in high shock and vibration applications such as cementing, fracturing and drilling mud pressure measurement. Learn More
Model 112/212/312 from GP:50 is an ultra high-pressure transducer, offered in a single piece sensor design with no welds or seals. All stainless steel construction and industry standard highpressure coned process connections are available in both English and Metric sizes. Learn More
The Model 375 Series from GP:50 is an API flanged pressure transmitter, offering over 10 years of fieldproven pedigree. This Series features a robust design with all stainless steel housing and optional Inconel wetted parts. The compact design provides a highly reliable and accurate transmitter that provides years of trouble-free use. There is an optional redundant sensor
design that provides backup in case of primary sensor failures. Optional HART communication protocol is available for field adjustment options. Learn More
The Model 7500-9000 Series from GP:50 is a high accuracy pressure and temperature transmitter, offering more than 15 years of field-proven pedigree within subsea wellhead applications. The Series features a robust design with all stainless steel housings and wetted parts, full seawater submersibility to 30K ft (9,144 M) and an API flanged process connection. An optional redundant sensor provides backup pressure and temperature outputs, in the case of prime element failures or cabling issues. Optional HART communication protocols are available for remote measurements. Learn More
The Model 7500-9100 Series from GP:50 is an API flanged, subsea pressure transmitter with over 20 years of field heritage. This Series features pressure ranges up to 20K PSI, seawater rating to 30K ft (9,144 M) and
optional HART protocol allowing for field configuration. A removable sensor assembly option allows for field repairs as well as redundant sensors that provide field backup in case of a primary sensor failure. Learn More
The 7501-9000 Series from GP:50 is a high-accuracy subsea rated pressure transmitter offering more than 15 years of field-proven pedigree. This Series features an API flanged process connection with Inconel inlay and all stainless steel housing with full seawater compatibility to 30K ft (9,144 M). Pressure ranges available from 0-500 through 0-30,000 psi with 4-20mA output or optional digital protocols. Learn More
The Model 411, 411X/P from GP:50 is a SMART rangeable pressure transmitter incorporating a 4-20 mA output with digital HART protocol. Units are offered with both CSA and FM approval options, as well as a
The Model 1171 Series from GP:50 is a rugged, hermetically sealed pressure transmitter which features magnetic coupling adjusts for full field calibration with 5:1 turndown ratio. Their compact, corrosion-resistant,
The Model 40-IM Series from GP:50 is a flush face mounted industrial pressure transmitter. It is expressly designed for higher viscosity media, particularly where such media can otherwise clog or damage traditional
non-flush port sensor designs. The rugged, all-welded, Inconel design of the 40-IM series allows for greater compatibility with corrosive media. No zero offset is caused during sensor installation. Buy OnlineLearn More
The Model 40-IM series from GP:50 is a flush face mounted industrial pressure transmitter. It is expressly designed for higher viscosity media, particularly where such media can otherwise clog or damage traditional
non-flush port sensor designs. The rugged, all-welded, Inconel design of the 40-IM series allows for greater compatibility with corrosive media. No zero offset is caused during sensor installation. Buy OnlineLearn More
sensor that further offers minimal thermal shift over a broad temperature range. Its single piece, non-welded construction eliminates weld failure risks. Learn More
Our Engineering team continues to lead the industry with innovative pressure and temperature measurement options including USB, and SDI-12 transmitters as well other well-established digital protocols such as CAN bus and HART. These digital protocols can be provided on most of our current line of analog output pressure and temperature transducers. Learn More
Model GP25 from GP:50 is a convenient In-line Signal conditioner and strain gauge amplifier that provides various analog and digital output options. Its compact size and rugged design provide years of trouble free service. Various sensor bridge and mV signal inputs are available, as well as a wide range of excitation options. Learn More
The Model BD300 digital indicator from GP:50 offers multi-pump alternation control. Universal 85-265 VAC, or 12/24 VDC Input Power Models. Large Dual-Line 6-Digit Display, 0.60″ & 0.46″ Learn More
Blue Ribbon is an Affiliate of GP50 and offers pressure gauges suited for water treatment applications. Whether for line pressure or our Poly-isolated version for caustic or alkaline media. Blue Ribbon has a gauge for your application.Learn More
The HDI 2100 Pump Stroke Counter is an intrinsically safe, certified, solid-state electronic stroke counter primarily used for monitoring mud pumps. Found most commonly within the HDI 9000 Choke Console System, the HDI 2100 monitors and displays the total accumulated mud pump strokes and the stroke rate of up to 4 individual mud pumps simultaneously. The stroke rate for each mud pump can be individually selected for display and is updated every second. Once installed, there is virtually no maintenance or calibration required. The quartz crystal oscillator provides high precision counts with no drift. The stainless steel case is completely sealed and features stainless steel piezo switches for long life. The entire package is constructed to operate in harsh environments and high vibration conditions encountered in land and offshore drilling. All HDI Gauges provide safety, accuracy, reliability, and low maintenance for the user.
Sales and services for weight indicators, electronic weight indicators, cement recorders, six inch gauges, cylinders, torque assemblies, line pull assemblies, 1502 assemblies, wireline gauges and cylinders, depthometers, electronic depth systems, counters, diaphragms, auto drilling systems, rotary torque systems, and pump stroke counters.
Contact Instrument’s Single Pointer Pressure Gauge systems are used to indicate pump pressure. Remote Pressure indicator receives its signal from a 15,000 psi, 2 in 1502 gauge protector assembly, 1:1 Piston Isolator or 4:1 Debooster. These gauges are precise, reliable and field proven. This system is available in pressures up to 15,000 psi. Each gauge comes fluid filled for added protection against vibrations. User adjustable dampening allows for fine tuning of pointer sensitivity.
Your process pressure instruments play a critical role in your applications. They accurately and reliably measure and monitor pressure to determine if process systems are working effectively and efficiently, or if you need to make system alterations or adjustments. This helps ensure the safety of your personnel, the efficiency of your processes and the quality of your products.
In this article, I will outline the most common instrument killers that endanger your pressure equipment. Although the focus of this blog is on pressure gauges, when the word instrumentis used, the reference is to a gauge, a pressure switch, or a transducer.
Component DamageVarious components of the gauge may have damage. For example, the pointer may be dented, a sign the gauge has been severely under or overpressure. In a liquid-filled gauge case, yellowed fill usually indicates elevated ambient temperature at the gauge. Also, the dial may be discolored, which is another sign of elevated temperature.
Below are some of the most common pressure instrument problems, including why they occur, what effects they have on the instrument and the overall operation or process, and how to resolve them.
In processing equipment, surges in process pressure can lead to pulsation in gauges. These pulsations can cause poor gauge readability due to pointer flutter and decreased gauge integrity due to component damage.
The Ashcroft MicroTube™orfinned siphonare rigid devices mounted directly to the instrument and then to the process so there is no need to consider how to mount the instrument if it were remotely mounted. The MicroTube™ siphon has been engineered for process pressures to 5000 psi and process temperatures to800°F (427°C). Thefinned siphon is rated for pressures to 3000 psi and process temperatures to700°F (371°C). Both devices are good temperature dissipaters.
Pressure spikes have many causes, including water hammer, overly rapid valve actuation, equipment malfunction or process fluid freezing. Gauges subjected to these conditions often show signs of damage like a dented pointer, a ruptured or deformed tube, or a broken segment gear. This damage can lead to unresponsiveness to changes in process conditions or complete instrument failure, both of which can result in poor operation or performance in your process.
Pressure spikes or surges beyond the full-scale range of a gauge or overpressure can result in accuracy degradation, gauge failure or rupture of the bourdon tube.
Integrating an internal stopYou can integrate an internal stop/overload stop to increase gauge proof pressure. This device typically increases gauge proof pressure by an additional 20%.
Installing a pressure limiting valve (PLV) or a gauge with high overpressure capabilityThis accessory device can be set to shut off at the full-scale range of the gauge. When process pressure falls below the full-scale gauge range pressure, the PLV will reset and allow process pressure to flow through the instrument. Another option to consider is a gauge with high overpressure capability like theAshcroft T6500 with the XRA option. This gauge allows for overpressure up to 400% of the gauge range.
Selecting a new, properly rated gaugeYou should choose a new gauge that accommodates the maximum operating pressure. For optimal readability, the gauge pointer should normally operate at 12:00 on the dial face. If the normal operating pressure of the gauge is 50 psi, choose a full-scale range twice the operating range or 0/100 psi.
Over the last decade, we have seen a huge increase in the sale of constant pressure pumps. Everyone sells them and most people are buying them. Everyone wants better pressure and many of you are willing to pay more to get it. Here are my thoughts.
When the pump turns on. A conventional water system turns on the pump when the pressure drops 20 psi. A pressure switch controls the pump and usually turns the pump on at 40 psi and off at 60 psi. A constant pressure water system is controlled by a pressure sensor. The controller usually turns the pump on when the pressure drops by only 5 psi. This means that you won’t have a large fluctuation in the pressure and that is why it is called a “constant pressure system”.
The speed that the pump runs. On a conventional system, the pump runs at full speed or not at all. It is either turning 3,450 rpm or zero. A constant pressure system will vary the speed of the pump to maintain a constant pressure. You might be taking a shower and only using 4 gpm. The pump will run the entire time you are using water. But, instead of running at full speed and turning off, it will turn slowly and maintain the pressure the whole time. Its kind of like “cruise control” for your well pump.
There are built in pump protections. Most controllers do a good job of protecting the pump from dry run, voltage supply issues, waterlogged pressure tanks, etc.
Some controllers can email or text you if there is a problem. Usually these devices are additional to the constant pressure controller, but this is an option on many units.
The controllers don’t like hot weather. They produce a lot of heat and they have to stay cool. So, when it is really hot outside, you might find that your controller will stop working or at least slow the pump down due to the excessive heat. Conventional systems rarely have this issue.
You don’t get the best pump protection. While the units do have built in pump protection, they are not the best at protecting your pump. A simple Pumpsaver is a great unit on a conventional system, but it won’t work on a constant pressure system. If you want great protection, stick with the original.
Do they work? Yes and no. Yes, they do a great job of keeping the pressure right in the range that you like. But, they don’t pump more water than conventional pumps. In fact, they use the exact same pump but with a different motor. So, if you have a problem with low water pressure due to high demand (like when the irrigation system is running) then switching to a constant pressure system will do nothing for you.
Is it worth it? Only you can decide that. Are you willing to pay more money and have more potential nuisance issues so that you can have very little fluctuation in pressure? A growing number of you are saying yes.
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