Dwyer DH3 User Manual

Bulletin B-30Series DH3 Digihelic®Differential Pressure ControllerSpecifications - Installation and Operating InstructionsDWYER INSTRUMENTS, INC. Phon

10 MAIN MENUS SUB MENUSSETTINGSMenus present onlyin pressure operation EE MENUMENU

11Main Menu Selections (Upper Right Display Reads MENU)SECrSecurity - Lock out access to Set Point and Alarm settings, or lock out access toall settin

12MAIN MENUS and SUB MENUSSECr (Security) MAIN MENUSECr is the only SUB MENU in the security MENU. When the security SUB MENUis selected, the present

13PrES(Pressure) SUB MENUFor pressure measurement, the following units are available:Table 1 Pressure Range vs. Available UnitsINWC.1000.2500.50001.0

14FLO(Flow) SUB MENUFor flow measurements the following units are available:SCFM- Standard cubic feet per minuteM^3H- Cubic meters per hourFLO r (Flow

15ArEA, DIA, XDIMand YDIMSUB MENUSThese SUB MENUS become accessible if the instrument is set for flow. When measuringflow, the area of the duct must b

160100ProcessReverse ActingTimeSPHSPLRelay InactiveRelay ActiveCtrL(Control) SUB MENU1SP- Single set point2SP- Two fully independent set pointsSPAL- S

17The following alarm function SUB MENUS are activated when CtrLis set to SPAL:AL(Alarm Type) SUB MENUHI- High alarmLO- Low alarmHILO- For a high/low

18AL0S (Alarm Output State) SUB MENUCL0S- Alarm relay contacts close upon alarm condition0PEN - Alarm relay contacts open upon alarm conditionALrE(Ala

19rESO(Resolution) SUB MENUThe DH 3 is capable of displaying four digits of resolution. However, at very low pressures the instability of the pressure

2SPECIFICATIONSService: Air and non-combustible, compat-ible gases.Wetted Materials: Consult factory.Housing Material: Die cast aluminumcase and bezel

MSP1and MSP2(Maintenance Set Point 1 & 2) SUB MENUSAdjust for the desired maintenance set points when the unit is placed in the maintenance mode.

INSTALLATIONLOCATION: Select a clean, dry location free from shock and vibration where temperaturelimits will not be exceeded. Distance from the trans

4MOUNTING: The DH 3 may be either panel (flush) mounted or surface mounted.Panel Mounting - Cut a 4-13/16˝ or 122 mm diameter hole in the panel and in

WIRING The DH 3 uses a standard 15 pin male high density D-Sub connector available frommost electronic distributors. A pre-wired 18˝ cable is included

6SP/ALSP/AL MENUMENU EE RSTRST HomePosition FunctionSequences the displaythrough SET POINT andALARM settingsAllows access t

7SETTING SET POINTS AND ALARMSThe hot key provides direct access to the Set Point and Alarm MENU. The SetPoint and Alarm MENUS that are displa

8MENU MAPMENU MAPCONTINUEDCONTINUEDSETTINGSSETTINGSMAIN MENUS SUB MENUSMENUSUNAVAILABLEFOR BI-DIRECTIONALRANGES ANDRANGES ABOVE 25 IN. W.C. E

9CONTINUEDCONTINUEDSETTINGSSETTINGSMAIN MENUS SUB MENUS0PEn EE MENUMENU