3 in 1 Instrument: Gage, Switch and Transmitter, Square Root Extractor for Air Flow
Digihelic® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output.
Features
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3-in-1 instrument allows the reduction of several instruments with one product, saving inventory, installation time and money
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Velocity of flow modes, a square root output coincides with the actual flow curve for greater precision
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Power usage of 120/220 VAC or 24 VDC provides flexibility to incorporate device in control panel
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Secure menu program provides access to device operation only for the right skill level
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Modbus® communications supports Process and HVAC system integration and control
Product Applications
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SCFM duct flow
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Industrial ovens air flow
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Filter status
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Clean room pressurization
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Fume hood air flow
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Surgical and medical room pressurization
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Damper and fan control
Specifications
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Service: Air and non-combustible, compatible gases.
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Wetted Materials: Consult factory.
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Housing Material: ABS plastic, UL approved 94 V-0.
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Accuracy: ±0.5% at 77°F (25°C) including hysteresis and repeatability.
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Stability: < ±1% per year.
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Pressure Limits: Ranges ≤ 2.5 in w.c. = 2 psi; 5": 5 psi; 10": 5 psi; 25": 5 psi; 50": 5 psi, 100": 9 psi.
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Temperature Limits: 32 to 140°F (0 to 60°C).
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Compensated Temperature Limits: 32 to 140°F (0 to 60°C).
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Thermal Effects: 0.020%/°F (0.036/°C) from 77°F (25°C).
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Power Requirements: High voltage power = 100 to 240 VAC, 50 to 400 Hz or 132 to 240 VDC. Low voltage power = 24 VDC ±20%.
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Power Consumption:
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Low voltage power = 24 VDC - 130 mA max;
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High voltage power = 100 to 240 VAC, 132 to 240 VDC - 7VA max.
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Output Signal: 4-20 mA DC into 900 Ω max.
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Zero & Span Adjustments: Accessible via menus.
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Response Time: 250 ms.
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Display: 4 digit LCD 0.4" height. LED indicators for set point and alarm status.
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Electrical Connections: Screw terminals.
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Process Connections: Compression fitting for use with 1/8" ID X 1/4" OD tubing (3.175 mm ID x 6.35 mm OD). Optional barbed fitting for 3/16" ID tubing.
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Enclosure Rating: Face designed to meet NEMA 4X (IP66).
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Mounting Orientation: Mount unit in horizontal plane.
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Size: 1/8 DIN.
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Panel Cutout: 1.772 x 3.620 in (45 x 92 mm).
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Weight: 14.4 oz (408 g).
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Serial Communications: Modbus® RTU, RS485, 9600 Baud.
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Agency Approvals: CE, UL.
SWITCH SPECIFICATIONS
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Switch Type: 2 SPDT relays.
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Electrical Rating: 8 amps at 240 VAC resistive.
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Set Point Adjustment: Adjustable via keypad on face.
