The Flow Finder System of Measurement represents an innovative way of obtaining accurate air flow readings in a cable pressurization system. Originally comprised of a portable Flow Gauge and the four Flow Finders shown here, the Flow Finder System of Measurement has evolved into a full line of reliable, easy to use hardware products.

Flow Finder technology is at the heart of our High Resolution Transducers, central office panels, bracketed manifold assemblies and other field hardware. It is based upon the use of a calibrated orifice which, when placed in the air flow stream, creates a minute but measurable pressure differential that is converted into an accurate air flow reading by the measurement device (Flow Gauge or High Resolution Transducer).

Check the links in the left navigation pane for information on our products. Most of them incorporate this simple flow measurement technology.

As the first air pipe manifold designed as a serious leak locating tool, the System Studies Flow Finder Manifold™ offers unparalleled ease and accuracy in air flow measurement. What makes our manifolds uniquely different from old style manifolds are their built-in Flow Finders™. Each chamber in the manifold is equipped with a Flow Finder to measure the outgoing flow to an individual cable. Another Flow Finder, of a higher flow range, measures incoming flow from the air pipe.

Flow Finder Manifolds are available in two models, P/N 9800-3060 and P/N 9800-3070. Both of these models provide air distribution to a maximum of five cables (via five outgoing ports, each containing a Flow Finder). In addition to its five outgoing ports, the 9800-3060 Flow Finder Manifold is equipped with an incoming port to measure the total flow into the manifold.

System Studies' High Resolution Pressure Transducers™ use solid-state, integrated circuit technology to provide greater accuracy and dependability for remote air pressure measurement. The transducers produce readings in the range of 0-30 Pounds per Square Inch (0-207 kPa) with resolution down to 0.1 PSI (0.7 kPa). Because their output is linear (from 4 to 20 milliamperes), as opposed to the 0.5 PSI (3.45 kPa) stepped readings of resistive transducers, they are capable of detecting very subtle changes in pressure. And unlike resistive transducers that have an internal resistor scale and wiper arm that can malfunction and cause inaccurate readings, our pressure transducers provide extremely dependable performance.

The High Resolution Pressure Transducers are available in a variety of configurations to suit your specific application. Variations pertain to the type of fittings supplied and the transducer's intended application / installation.

Our High Resolution Flow Transducers™ utilize the Flow Finder System of Measurement™ to bring unparalleled versatility and accuracy to remote air flow measurement. When pneumatically connected to a Flow Finder™ (either an individual unit or one installed in a Flow Finder Manifold™ or Flow Bank™), the High Resolution Flow Transducer provides readings from zero flow to full flow in the designated Flow Finder range. It also provides accurate readings up to two times the indicated flow range maximum.

Unlike mechanical flow transducers that provide electrical resistance output in 20 or 40 steps, our High Resolution Flow Transducers use solid-state circuitry to provide stepless current loop output in the range of 4 to 20 milliamperes. PressureMAP™, via the 289H LSS™ monitor, converts the transducer's electrical current output into precise flow readings (down to 0.1 SCFH/2.8 LPH resolution for each Flow Finder range).

This transducer combines the capabilities of our High Resolution Pressure and Flow Transducers into one nickel-plated brass housing. It is ideal for monitoring central office panel air delivery equipment, Flow Finder Manifolds, and end of pipe locations.

The transducer pneumatically connects to an external Flow Finder™ to provide the differential pressure measurement used for both the flow and pressure readings. The transducer housing contains two circuit boards: one measures the difference between Flow Finder's high and low pressure sides; the other measures pressure entering the housing from the Flow Finder's low side. These pressure values create small voltage outputs which are converted to electrical current values (between 4 and 20 mA) and transported via two dedicated conductor pairs to the 289H LSS monitor.

The High Resolution Dual Transducer is available in a variety of configurations to suit your specific needs.

This item is a stainless steel, cylindrical device that threads into the high pressure side of a nitrogen tank's pressure regulator. It measures tank pressure from 0 to 3,000 Pounds per Square Inch (PSI) and outputs the information as a loop current value in the range of 4 to 20 milliamperes.

The device is powered by voltage—in the range of 10 to 48 volts DC—supplied over a pair of dedicated conductors by the 289H LSS monitor. PressureMAP calls the 289H monitor, scans the device reading, and converts the PSI value to a volume reading between 0 and 220 cubic feet.

Designed primarily for central office dryer room monitoring, this dual sensing device provides remote monitoring and alarming of high humidity conditions and ambient room temperature. The humidity sensor detects changes in relative humidity between 20 and 95% and responds with a current loop value between 4 and 20 milliamperes. The temperature sensor provides an electrical resistance output in the range of 2069 ohms to 885K ohms that is converted by PressureMAP to a temperature reading between 32° F (0.0° C) and 150° F (65.5° C).

This device is ideal for monitoring incoming line voltage to key AC-powered equipment, such as central office air dryers. Designed for 220V AC three-phase applications, this sensor provides accurate and reliable voltage measurement on three individual 4–20 mA output pairs. System Studies recommends one device for each 220V AC three-phase branch in a wire center to monitor air dryer AC power. Note: This sensor should be installed ONLY by a qualified electrician following the manufacturer's instruction supplied with the product.

The Contact Alarm Expander™ is a small, DC powered block of solid-state relays that makes it possible to convert a standard "open/closed" contact indicator into several isolated and varying contact configurations. Each of these outputs can be read simultaneously by different monitors. The Contact Alarm Expander takes a normally dry contact as input and relays the state of this contact to two normally open contacts, one normally closed contact, and one 540/270 ohm contactor.

In application, this device makes it possible to monitor air dryer equipment remotely without interfering with existing, on-premises contactor alarming.

Our Barometric Transducer is designed to be used with High Resolution Transducers in pressure systems that are affected by extreme barometric fluctuations or are located at relatively high altitudes. With one barometric pressure transducer per office, PressureMAP™ will be able to compensate the High Resolution Pressure Transducer™ readings that are affected by barometric changes and altitude.

To provide ease and convenience for monitored manifold installations, System Studies provides a bracket assembly with either one or two Flow Finder Manifolds™ pneumatically connected to a High Resolution Flow or High Resolution Dual (pressure/flow) Transducer. The pneumatic connections between the transducer and the manifold(s) are accomplished by the use of two 1/8 inch (0.3 cm) stainless steel rigid tubes. These tubes are standard on all models.

Please note that there are numerous ordering options for the Manifold Monitoring Assembly™. The variations are defined in the

The Flow Measurement Assembly is the ideal component for all manifold locations where Flow Finders or Flow Finder Manifolds™ have not been previously installed. It can be ordered with a High Resolution Flow or Dual (pressure/flow) Transducer. Additionally, you can also select one of the available six Flow Finder ranges for the assembly: either 0–9.5 SCFH (270 LPH), 0–19 SCFH (540 LPH), 0–47.5 SCFH (1350 LPH), 0–95 SCFH (2700 LPH), 0–190 SCFH (5380 LPH) or 0–475 SCFH (13,500 LPH). This last two Flow Finders are used in 1" air pipe systems.

The transducer is equipped with a removable wire cover assembly that provides access to device pairs for splicing. Two product numbers distinguish between the type of

Our High Range Flow Measurement Assemblies are designed to measure the high volume of air flow that occurs in a one inch (Power Pipe™) installation. The assembly consists of either a High Resolution Flow or Dual (pressure/flow) transducer and either a 0–475 or 0–190 SCFH Flow Finder™ mounted onto a stainless steel bracket. Assemblies can be ordered with or without pipe connector fittings.

Flow Finders™ are placed at specific locations in the Power Pipe System™ to track flow and localize any potential pipe leaks. The 0-475 SCFH High Range Flow Finder Assembly, Part No. 9800-3130, contains a high range Flow Finder™ pre-mounted to a stainless steel installation bracket. The Flow Finder's internal orifice creates a slight pressure differential as air flows through the device. This measured value is converted into an air flow rate by the Flow Gauge™ or High Resolution Flow/Dual Transducer. The 475 SCFH Flow Finder is also installed on the Power Pipe Panel and High Range Flow Measurement Assembly.

This specially designed Two Port Power Pipe Manifold, Part No. 6510-0086, is used with the Power Pipe System™. It contains one 1/4" and one 1/8" female NPT, with a 3/4" female NPT on each end for connection to the Power Pipe, primarily at manifold and splice locations.

System Studies designed the Four Port Power Manifold, Part No. 6510-0085, with a 3/4" female NPT on each end for use with the Power Pipe™. It contains four, 1/4" female NPT threads to facilitate the easy installation of other Power Pipe components. The unused openings may be plugged with a 1/4" Hex-Head Plug (Part No. 6240-0021).