A spring-loaded piston/magnet sensor is magnetically coupled to a pointer to indicate a pressure difference. Sensing is completely separated from the indicator, switches, relay or transmitter. A high pressure rated housing is machined from a single block making these a natural for high pressure applications. Includes the 1201, 1203 & 1303 series.
For air or gas applications and no bypass, consider the diaphragm sensor design. Built on a design similar to the piston units, a diaphragm replaces the piston and separates the high and low pressure ports. A variety of diaphragm designs are available; small for more common DP measurements, large for more sensitive applications and a rolling diaphragm for high DP measurements. The gauges can be accompanied by a switch, relay or transmitter. Includes the 1502, 1516, 1518 & 1831 series.
Switches, relays and transmitters are enclosed in UL, CSA, FM and CENELEC approved enclosures that have a gauge option for local indication. Choose one or two switches, SPST, SPDT or a DPDT relay, available in a variety of voltages. Transmitters allow for continuous remote location monitoring. These enclosures meet Class I, Div. I specifications along with Nema-3, 4X, 7, 9 and 12. Both piston and diaphragm sensor models are available to make this the most comprehensive offering in the industry. Includes the 1204, 1504 & 1514 series.
Differential Pressure Selection Guide
The new Orange Research Differential Pressure Flowmeters are compact and rugged, with directly connected, large throated, non-clogging flow nozzles. This unique design reduces size and cost while minimizing errors and leaks.
Simply select the flow rate and material, and you are set. There is no need to choose a primary flow element, a differential pressure gauges, and then piping. Ordering, installation and maintenance is simplified. Everything is in one compact package.
Differential Pressure Flowmeter Specifications
Measure from below 2 GPH to 40 GPH for liquids and 1.5 to 5 SCFM for gases with our fixed orifice sensors. This design places a Delrin® orifice/magnet assembly on a diaphragm that deflects with the flow rate. This assembly is magnetically coupled to the dial face to give an indication of the flow rate on a square root dial. Gauge, gauge-switch and switch models are available. Includes 2020 series gauges.
A wide range of flow rates can be measured with our variable area flowmeters. The sensor, a magnet/Delrin® cone, rests in a precision orifice and is deflected by fluid flow. As flow increases, the dial, which is magnetically coupled to the sensor, indicates the position of the sensor reflecting the flow rate on an easy to read face. Measure from 1-10GPM on liquids or 1.5 to 100 SCFM on gases. Choose from gauges, switches or transmitter options. Includes the 2220 and 2320 series gauges.
For higher flow rates, choose our 2400 series flow meters. These variable area flow meters utilize a magnetically coupled cone/indicator design and have one inch ports, allowing for up to 30 GPM flow rates with a low pressure drop. Combine the gauges with one or two switches or choose our switch only models. Includes the 2420 series gauges.
Flowmeters, Switches & Transmitters Selection Guide