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MAGNEHELIC®, PHOTOHELIC®, MINIHELIC®, and DIGIHELIC®
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The MAGNEHELIC® Pressure GaugeThe Magnehelic® is the industry standard to measure fan and blowerpressures, filter resistance, air velocity, furnace draft, pressure drop across orifice plates, liquid levels with bubbler systems and pressures in fluid am-plifier or fluidic systems. It also checks gas-air ratio controls and automatic valves, and monitors blood and respiratory pressures in medical care equipment.
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PHOTOHELIC® Pressure ControlPHOTOHELIC® models combine the MAGNEHELIC® gauge with a precise pressure switch that lets you control low and high gas pressures. Knob controls adjust dual set points, which allow for variable deadband control. These set points contain photocells that actuate DPDT relays when room pressures reach a preset upper or lower limit, and they can be set up to control corrective damper action. As the room pressure changes in response to damper motion, and the indicator returns to the null band, damper motion is halted.
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Minihelic II® Differential Pressure GaugesCombining clean design, small size and low cost with enough accuracy for all but the most demanding applications our Minihelic®II gauge offers the latest in design features for a dial type differential pressure gauge. It is our most compact gauge but is easy to read and can safely operate at total pressures up to 30 psig. The Minihelic®II is designed for panel mounting in a single 25⁄8" (79 mm) diameter hole. Standard pressure connections are barbed fittings for .1875" (5 mm) I.D. tubing; optional .125" (3 mm) male NPT connections are also available. Over-pressure protection is built into the Minihelic II® gauge by means of a blow-out membrane molded in conjunction with the diaphragm. Accidental over-ranging up to the rated total pressure will not damage the gauge. With removable lens and rear housing, the gauge may be easily serviced at minimum cost. With the housing molded from mineral and glass-filled nylon and the lens molded from polycarbonate, the gauge will with stand rough use and exposure as well as high total pressure. The 5% accuracy and low cost of the Minihelic®II gauge make it well suited for a wide variety of OEM and user applications.
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DIGIHELIC® Differential Pressure GaugeThe Digihelic® differential pressure controller is a 3-in-1 instrument possessing a digital display gauge, control relay switches, and a transmitter with current output. Combining these three features is a cost efficient way to save on the number of instruments needed to measure pressure, velocity and flow. The Digihelic® can achieve a 0.5% full scale accuracy, making it the perfect controller for glove boxes, hoods and clean rooms. The Digihelic® allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units. 2 SPDT control relays with adjustable dead bands are provided along with a scalable 4-20 mA process output. The Digihelic® allows you to require a security code prior to any changes to the user-set programming. An easy to use, menu driven keypad also lets you set all of the following: pressure, velocity or flow operation; K-factor for use with flow sensors; rectangular or circular duct for inputting area in flow applications; set point control or set point and alarm operation; high/low alarm; automatic or manual alarm reset; alarm delay; view peak and valley process readings; digital dampening for smoothing erratic process applications; Modbus® communications; and field calibration.
**Price includes installation More information |
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Copyright 1999 — 2012 Terra Universal. Inc. All rights reserved.
All prices and specifications are subject to change without notice. Blue Prices indicate products with quantities in stock according to computer balances, but subject to prior sale or error. Crating charges apply to selected items. Call or click below for more information on terms and conditions.
