Delta Controls Corporation products

Delta Controls Model 633IF – Detects an interface as it moves down a pipeline. Delta Controls Model 633ED – Detects whether a pipeline is empty or full; Model 633AN determines what a pipline contains; gas, oil, water or a mixture. Trying to sense these conditions with a target or other type flow switch can give erroneous results, causing spills, process shutdowns, etc.

Float Switch, Top Inserted, Single Point. The Delta Controls Model 709 Float Switch is a simple mechanical device which is highly reliable over long periods of time. An alarm switch-type action is provided as the liquid level surface passes through the elevation where the sensing float has been positioned. The sensing float is attached to a vertical shaft, which can move up and down. Lifting the float causes the output switch station to activate. The switch station is on the outside of a solid, non-magnetic pipe wall. This isolation eliminates the possibility of leaking seals and flex tube failures, which are problems in many other designs.

Capacitance Level Switch, Optional Remote Mount, DPDT. The Delta Controls Model 105 Capacitance Level Switch uses RF Admittance technology to produce a switching action when a material level crosses the set point. The interface position of two liquids with different dielectric constants is accurately detected, including with cloudy interface conditions. One of the liquids should be nonconductive. Model 105 is insensitive to specific gravity (SPG) variations.

The Delta Controls Model 551 Pressure Transmitter Sensor includes an oil-filled 316-L Stainless Steel or Hastelloy® C-276 diaphragm that isolates the strain gauge bridge from the process liquid or gas. The back of the sensor is usually vented to atmosphere to compensate for barometric pressure changes. The 551 has the entire electronics assembly epoxy sealed into the body. The advantage is the smaller size.

The Delta Controls Series 60 Tilt Probes are designed for use with liquids, lump, granulated, or powdered solids. Slurries and liquids vary from extremely heavy and viscous to thin and watery. Stainless steel bail material is basic and suitable for most services. All-stainless probes are ideal when area is wet or corrosive while polished all-stainless probes are required for 3A sanitary services.

The Delta Controls Model 621 Flow Switch is equipped with inside body dimensions and end connections that conform to the pipeline. The 621 is built to ANSI, ASME, and PED specifications. These switches protect pumps, blowers, heat exchangers, etc. The paddle magnetically connects to the output switch. A heavy-duty solid sealing tube separates the process fluid from the switch mechanism. Failures due to seal, diaphragm, and bellows leaks are eliminated.

The Delta Controls Model 622 Flow Switch produces on/off switching action in response to liquid or gas flow through horizontal or vertical pipelines and ducts. The general purpose is to detect loss of adequate flow or to alarm of excessive flow thus protecting pumps, blowers, heat exchangers, etc. The paddle extends into the flowing stream and operates an output switch at the setpoint flow rate.

Flow Switch, Low Flow, Safety Shower and Eye Wash Station Service. The Delta Controls Model 623 Dual Stage Flow Switch actuates at low-flow rates and prevents high pressure drops at 50 times the actuation rate. The switch output is used for alarm or control. The 623 consists of two sections: a flow sensing paddle and a pressure operated flow bypass valve. As the flow rate increases from zero, the fluid flows through a restriction nozzle and impinges against a paddle, which rotates at the specified rate. The switch is magnetically coupled to the paddle and actuates as the rotation occurs. When the actuation rate is exceeded, the flow bypass valve opens to allow the additional fluid flow to bypass the restriction nozzle. The pressure drop is limited to a low value at highflow rates.

The Delta Controls Model 624 Flow Switch is highly reliable full swing, inline body switch. The paddle body fits into and becomes an unobstructed part of the pipeline. Model 624 is equipped with a full swing paddle and has an open bore matching the pipeline’s. The 624 has a flat blade-type paddle that rotates 90 degrees in response to increased flow rate. The switch actuates at a pre-calibrated set point. The paddle moves until it is flush against the pipeline wall. The body bore is unobstructed, and the flow is unrestricted. The 624 has a negligible pressure drop at high velocities for 2 inch to 8 inch (50 to 200 millimeter) pipelines with flow velocities possible in excess of 50 feet per second (15 meters per second).

The Delta Controls Model 625 Flow Switch detects ultralow flows for 0.25 inch to 1.0 inch (6 mm to 25 mm) pipelines. Applications include flow protection, safety monitoring, purging for explosion proofing, as well as detection of additives, oiling, purging, etc with a low pressure drop at 35 times detected flow rate. It produces on/off switching actions at a preset rate of flow and is field adjustable. The flowing fluid passes through the variable piston annulus and/or the adjustable bypass valve. Increasing differential pressure causes the piston to move and compress the range spring. When the piston magnet is carried to the switch magnet, the switch magnet attracts and the output snap switch actuates. The size of the bypass valve opening determines the flow rate switching point.