INSTALLATION INSTRUCTIONS senvainc.com 1-866-660-8864 (F)1-503-296-2529 9290 SW Nimbus Ave. Beaverton Oregon 97008 P4 Economy Pressure Sensor 0-0.1/0.25/0.50/1/5/10/25” W.C. Models Fixed Ranges, Uni or Bi- Directional PRODUCT APPLICATION LIMITATION: Senva products are not designed to be used as the lone device for life or safety applications. Senva products are not intended for use in critical applications such as nuclear facilities, human implantable device or life support. Senva believes a systems approach to safety is necessary for these types of applica- tions. Senva is not liable, in whole or in part, for any claims or damages arising from such uses. INSTALLATION 1. Screw mount sensor directly to duct, or in panel using self- tapping screws or attach to a DIN rail (2 possible orientations for DIN mounting, BACK and LEFT SIDE). 2. Plumb air lines to sensor hose barbs(Accepts 1/8” & 1/4” ID tubing). High (+) and low (-) ports are labeled on the sensor. 3. Wire sensor for voltage or current output as shown in the wiring diagrams. 4. Recomendation: Apply power to sensor. With no pressure applied, press the ZERO SET button for 2-seconds. (For best results, temporarily connect high and low pressure ports together while zeroing.) LED indicator will flash every 5 seconds for normal operation. LED indicator will rapidly flash when applied pressure greater than 110% of selected range. LED indicator will rapidly flash momentarily when zeroing process is complete. LED STATUS/INDICATION WIRING DIAGRAMS Optional versatile pobe for both remote or duct mount • RP-6 Remote/duct probe, 6” • Accepts both 1/8” and 1/4” tubing 0 00 3 - wireIMPORTANT WARNINGS • Only qualified trade installers should install this product • This product is not intended for life-safety applications • Do not install in hazardous or classified locations • The installer is responsible for all applicable codes • De-energize power supply prior to installation or service • Forming a “drip-loop” (allowing tubing to dip below the level of the sensor hose barbs) is recommended to protect the sensor from damage caused by condensation. SPECIFICATIONS DIMENSIONS TROUBLESHOOTING SymptomSolution No output Check wiring. Ensure power supply meets requirements. Pressure reading error Verify control panel software is configured for correct output scaling. Verify switch settings. Verify tubing is not pinched or leaking. Possible contamination. Ensure sensor is used only on dry air or nitrogen. Power supply12-30VDC/24VAC (1) , 30mA max. Outputs3-wire 0-5V/10V, 4-20mA loop powered, 3-wire 4-20mA Output scalingMax Range (Selectable Ranges) 0-5” (0.1/0.25/2.5/5”wc), 0-1250Pa(25/50/625/1250Pa) 0-10” (1.0/2.5/5/10” wc), 0-2500Pa(250/625/1250/2500Pa) 0-25” (5/10/15/25” wc), 0-6250Pa(1250/2500/3750/6250Pa) Operating TemperatureOperating Range Compensated Range -4oF to 185oF (-20oC to 85oC) 32oF to 122oF (0oC to 50oC) Media CompatibilityDry, oil-free air. Nitrogen. Sensor TypePrecision calibratedMEMS silicon piezoresistive AccuracyCombined linearity and hysteresis+/- 1.0% of selected range Auto-zero inputPushbutton and contact closure input Enclosure MaterialABS Dimensions 4.75”h x 1.82”w x 0.90”d (1) One side of transformer secondary is connected to signal common. Dedicated transformer is recommended. IMPORTANT! TYPICAL APPLICATIONS Duct Static Duct Static: Install a static pressure pickup tube approximately 2/3 of the way down the discharge air duct and plumb to high (+) port for positively pressurized ducts. Velocity: Use a pitot tube and plumb high (+) port to total pressure (Pt) connection and low (-) port to static pressure (Ps) connection to directly read Pt-Ps = Pv. Apply correction constant provided by pitot tube manufacturer. Revised 1/11/2021 Document 152-0351-0C Filter Status HI(+) HI(+)LO(-) Zero Set Push Button 4.75” 1.82” 0.90” Conduit/Terminal Cover With 3/4” Knockout(Optional) DIN Release Wire Strain Relief 4.20”Next >