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2021-4-30 · accuracy) as process conditions change. Turndown is an important specification that defines a metering pump’s output. What is Turndown? Turndown is expressed as a ratio of a pump’s output. If a metering pump is capable of 1,000 GPH maximum
Get Price2016-6-2 · Turndown is expressed as a ratio of the metering pump output. If a pump is capable of a maximum of 1,000 gallons per hour (gph) and it has a 100-to-1 turndown ratio, then it can be adjusted to a flow rate as low as 10 gph and still perform within its accuracy rating. But a turndown ratio means little without an accuracy rating as well.
Get Price2021-4-2 · Turndown is the ratio of a metering pump’s output. For example, if a pump has a turndown ratio of 1000:1, that means it should be able to move anywhere from 1,000 GPH or 1 GPH within the same accuracy rating.
Get Price2019-2-12 · A better way to determine metering pump accuracy is to use deviation from the pump’s current capacity setting, or set point. When accuracy ratings are expressed as a func-tion of set point, turndown is defined by the pump’s flow rate variation as a +/- percent-age of mean delivered flow under fixed sys-tem conditions applied over the pump’s full turndown ratio. This …
Get PriceWater treatment, chemical processing or oil and gas production, are just some processes that, on a daily basis, place highly variable demands on your metering pumps throughout its lifetime. To be able to support these processes reliably and efficiently, you need metering pumps with accurate turndown.
Get Price2013-2-10 · My understanding is that turndown ratio is pump manufacturer's capability, as long as the rated capacity of the pump is 110% more than maximum capacity. In this case, no minimum and max operating conditions specified in the datasheet only rated conditions.
Get Price2011-12-17 · The steady state accuracy of a correctly installed industrial grade metering pump is generally +/- 1.0 percent or better. Although a metering pump can generally be adjusted to pump at any flow rate between 0 and its maximum capacity, its accuracy is measured over a range determined by the pump's turndown ratio.
Get Price2021-4-30 · Turndown claims that cannot be verified provide very little benefit to the process. A professional metering pump company rates the turndown of its products based on solid design and verifiable testing methods. In tests, every pump manufactured should be verified at its published turndown ratings while maintaining
Get Price2020-5-1 · The pump offers a smooth chemical feed without risk that it will overheat or lose its prime. Furthermore, the pumps do not require continuous maintenance and do not include any check valves that could potentially clog. A large turndown ratio (1,000:1) allows users to standardize on one pump for all chemical-feed applications.
Get PriceLearn the Proper Way to Measure a Metering Pump’s Turndown Water treatment, chemical processing or oil and gas production, are just some processes that, on a daily basis, place highly variable demands on your metering pumps throughout its lifetime.
Get PriceMost metering pumps have a turndown ratio of 10:1 which simply means that the pump is within its accuracy rating anywhere between ten per cent and 100 per cent of capacity. Some newer designs of metering pumps feature higher accuracy, and a greater turndown ratio of 100:1.
Get Price2020-2-25 · control and a turndown ratio of 360:1 make this series an exceptional value. The pumps are simple to operate with only three pushbutton keys and the unmatched turndown ratio provides both versatility and high resolution chemical feed which eliminates slug-feeding effects. PUMP SERIES EZ = Electronic metering pump with manual speed control
Get Price2021-5-14 · Hydra-Cell® Metering. The flow rate of a Hydra-Cell® metering pump is constant, regardless of system pressure. The relationship between flow and pump speed is a straight line. Flow is easily controlled to within ±1% accuracy simply by controlling pump speed - with turndown ratios of 10:1 or better. Flow is steady, with little pulsation.
Get PriceThe Econ LD is a precise, compact, variable speed, peristaltic pump designed for reliably metering low volume amounts. The quiet, long lasting brushless motor, in a totally enclosed housing, offers premium quality at an economical price.
Get PriceAlthough a metering pump can generally be adjusted to pump at any flow rate between 0 and its maximum capacity, its accuracy is measured over a range determined by the pump's turndown ratio. Today’s hydraulically actuated metering pumps have a turndown ratio of 1,000-1, which means the pump will accurately dose chemicals anywhere between .1% ...
Get Price2008-4-25 · 18 2/08/2008 - product overview Ideal for applications requiring metering pump accuracy with minimal pulsation (see page 51 for complete details) Solenoid driven diaphragm pump driven by optoDrive ® and protected by OptoGuard Capacities: 2.99 gph (11.3 lph) to 19.8 gph (75.0 lph)
Get PriceThe pump industry relies on expertise from a large and varied range of specialists, from experts in particular pump types to those with an intimate understanding of pump reliability; and from researchers who delve into the particulars of pump curves to experts in pump efficiency. To draw upon the wealth of expert knowledge the Australian pump industry has to offer, Pump Industry has ...
Get Price2019-2-12 · Why Turndown Is a Vital Part of Metering Pump Efficiency J. Coogan Cameron, Published June 2016 tion and stabilization, and various measures for taste and odor control. Each step requires an assortment of chemicals used in differ-ent combinations until the desired water standard has been achieved. Turndown is important in water treatment
Get Price2020-2-25 · control and a turndown ratio of 360:1 make this series an exceptional value. The pumps are simple to operate with only three pushbutton keys and the unmatched turndown ratio provides both versatility and high resolution chemical feed which eliminates slug-feeding effects. PUMP SERIES EZ = Electronic metering pump with manual speed control
Get PriceSEKO Metering Pumps Solenoid Metering Pumps Tekna Series Pump Features • 4 Models cover an output range of 0.1 to 29 GPH with pressure ratings up to 290 PSI. • Turndown ratio 100:1 using the manual stroke rate control. • Choice of Analog or Digital controls. • Installation flexibility with both wall mount and surface mount brackets ...
Get PriceNIKKISO METERING PUMPS are designed to operate under toughest applications for continuous operation. With the precise handling, stoke length is adjustable from 0~100% while the pump is running or stopped. NIKKISO METERING PUMPS comform to American Petrochemical Institute API-675 2nd edition design requirement. ．Steady state accuracy within +0.5% under 10:1 turndown …
Get Price2019-4-9 · Metering pumps that use a variable speed drive will deliver a turndown ratio that is determined by dividing the pump’s stroke speed by its minimum operating speed. A variable speed drive will enable the pump to inject a dose of the same size on each stroke, but since the stroke speeds will change, the doses themselves will be less frequent.
Get PriceJN Series Pumps are designed for especially low rates. Double ball checks with Teflon valve seats assure ±1% steady slate repeatable accuracy over a 10:1 turndown range. Manual output control knob is located on top of the pump for easy access. Automatic pump output control is available for pumps equipped with a variable speed motor.
Get PriceA metering pump should be sized so the maximum expected flow rate is 85% to 90% of the pump capacity. This leaves additional capacity if needed. The minimum capacity should never be less than 10% of the pump capacity to maintain accuracy. Consider materials of construction. Metering pumps are available in a variety of materials.
Get PriceCD3 Multi-Diaphragm Metering Pump. Continuous flow for puslation free chemical feed. Made in the USA, Continuous Innovation, Exceptional Customer Service.
Get PriceThe control equipment is wired to the pump input terminals to accept a dry contact or 12-24 VAC/VDC signal. The pump runs at a set time, a set speed or a set flow rate output according to the mode of operation selected. The flow rate outputs are up to 30 gallons per day at 100 psi maximum and the turndown is 10:1 and in the 10 PPG mode it is 4:1.
Get Price2021-5-14 · Capacity range of single head pump: 1 – 60 l/h; 25 – 1 bar. The diaphragm metering pump EXtronic ® is perfectly suited for the sensitive use of liquid media in facilities with an explosive gas atmosphere as well as for mines at risk of firedamp, as it is approved in compliance with the EU EX Regulation 2014/34/EU (ATEX). more
Get Price2019-2-12 · Why Turndown Is a Vital Part of Metering Pump Efficiency J. Coogan Cameron, Published June 2016 tion and stabilization, and various measures for taste and odor control. Each step requires an assortment of chemicals used in differ-ent combinations until the desired water standard has been achieved. Turndown is important in water treatment
Get Price2021-3-30 · industrial grade metering pump is generally + 1.0% or better. Although a metering pump can generally be adjusted to pump at any flow rate between 0 and its maximum capacity, its accuracy is measured over a range determined by the pump's turndown ratio. Most metering pumps have a turndown ratio of 10:1, which simply means that the pump
Get Price2018-3-1 · up to 1400:1 turndown. The pump is certified for compliance to UL and CSA standards. Plunger Pump The Encore® 700 Plunger Pump utilizes the proven Encore® 700 gearbox to meet high pressure applications. It is available in four capacities, up to 45.3 gph and up to 2900 psi. Chemical Metering Pump Skid The pre-wired, plumbed and tested
Get PriceOther optional features external stop function and 1000:1 turndown control. Ten distinct models are available, having pressure capabilities to 250 psig (17 bar), and flow capacities to 58 gpd (9.1 lph), with a turndown ratio of 100:1. Metering performance is reproducible to within +/- 3% of maximum capacity.
Get PriceFREE shipping on your Walchem Diaphragm Metering Pump IX-B015TCT-U throughout the US and Canada. Purchase online from Promag Enviro for your water treatment needs. ... High resolution motor control adjusts the discharge and suction speeds to meet a full and accurate turndown ratio of 1000:1 and flowrates from 300 L/H down to 7.5 mL/H.
Get PriceThe control equipment is wired to the pump input terminals to accept a dry contact or 12-24 VAC/VDC signal. The pump runs at a set time, a set speed or a set flow rate output according to the mode of operation selected. The flow rate outputs are up to 30 gallons per day at 100 psi maximum and the turndown is 10:1 and in the 10 PPG mode it is 4:1.
Get Price2020-10-2 · The EXCEL XR metering pump features a variable speed drive allowing full control of the stroke profile for maximum control of the chemical going into your process. In addition, it also features a wide variety of control options that are easily configured using the intuitive user interface. Whatever your application, the EXCEL XRmetering pump
Get Price2003-7-1 · The Digital EZC Series pump from Walchem Corporation is a solenoid-driven diaphragm metering pump with a maximum capacity of 6.7gph (25.4 l/h) and a maximum pressure of 150psi (10 bar). It is designed for the chemical industry and is the latest addition to Walchem’s E Class of pumps. This is only a short news story.
Get PriceBlue-White Chem-Pro Series is a Diaphragm Metering Pump with capacities from .02gph to 40gph, with pressures to a max of 175psi. One of the outstanding features of the pump is the diaphragm. It is made of solid PVDF material and is manufactured at Blue-White to insure strict quality control.
Get Price2019-8-20 · The delta® is a solenoid driven, diaphragm metering pump. It covers a feed range from 2.0 gph at 363 psi (8 l/h at 25 bar) to 20 gph at 29 psi (75 l/h at 2 bar). Due to its wide adjustment range – both the stroke length and the stroke rate can be varied – this output range is covered by seven different pump …
Get PricePulsatron Series MP Chemical Metering Pump by Pulsafeeder • Automatic Control, Fully scalable 4-20mA current signal that can also be calibrated to precisely match the current signal reading of the sending device. • Manual Control allows for a combined 1000:1 turndown resulting in accurate metering for critical applications.
Get Price2021-3-30 · industrial grade metering pump is generally + 1.0% or better. Although a metering pump can generally be adjusted to pump at any flow rate between 0 and its maximum capacity, its accuracy is measured over a range determined by the pump's turndown ratio. Most metering pumps have a turndown ratio of 10:1, which simply means that the pump
Get PriceNIKKISO METERING PUMPS are designed to operate under toughest applications for continuous operation. With the precise handling, stoke length is adjustable from 0~100% while the pump is running or stopped. NIKKISO METERING PUMPS comform to American Petrochemical Institute API-675 2nd edition design requirement. ．Steady state accuracy within +0.5% under 10:1 turndown …
Get Price2021-4-13 · If you incorporate a programmable pump controller (variable frequency drive; 'VFD') you can maintain metering accuracy within a 10:1 turndown ratio. The P100 Hydra-Cell pump is a standard model F20 Hydra-Cell pump with the addition of the gearbox. We add the gearbox to reduce the shaft torque required for lower RPM (flow rate) performance ...
Get PriceMetering pumps | Iwaki Co.，Ltd. is a leading global manufacturer engaged in developing and supplying chemical pumps and flow control devices. Our strength lies in manufacturing multiple varieties in small lots，which helps us in satisfying the needs of multiple industrial areas.
Get PriceThe G series milton roy metering pump, also known as the MACROY pump, is now NSF/ANSI 61 and 372 certified for municipal compliance and safety assurance. Capable of handling pressures up to 175 psi (12 bar) and flow rates up to 310 gph (1181 l/h) it is an ideal pump for water treatment applications.
Get PriceTrueDos® Digital Dosing Brochure DDA SMART Digital dosing pumps are the next generation of variable speed micro-processor controlled metering pumps. 1:3000 or 1:1000 turndown ratio PVC, PVDF, Polypropylene & 316 SS materials Modular construction with removable wall mounting bracket, and side or...
Get Price2003-7-1 · The Digital EZC Series pump from Walchem Corporation is a solenoid-driven diaphragm metering pump with a maximum capacity of 6.7gph (25.4 l/h) and a maximum pressure of 150psi (10 bar). It is designed for the chemical industry and is the latest addition to Walchem’s E Class of pumps. This is only a short news story.
Get PriceEZ Series electronic metering pumps offer precise chemical injection at a low cost. The compact size and simple control make them ideal for water treatment and OEM applications. Advanced microprocessor control and a turndown ratio of 360:1 make this series an exceptional value.
Get PriceThe unit is a direct-acting high-quality diaphragm metering pump. Its PTFE diaphragm has a four-layer structure, ensuring a high degree of safety and sealability. Multi plex pump arrangement is also available.