Download
Share
Print this page
  1. Manuals
  2. Brands
  3. Dwyer Instruments Manuals
  4. Controller
  5. Series DH3 Digihelic
  6. Installation and operating instructions manual

Dwyer Instruments Digihelic DH3 Series Installation And Operating Instructions Manual

Differential pressure controller
Hide thumbs Also See for Digihelic DH3 Series:

Advertisement

Quick Links

Download this manual
Bulletin B-30
Series DH3 Digihelic
Differential Pressure Controller
®
Specifications - Installation and Operating Instructions
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000
www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, IN 46361, U.S.A.
Fax: 219/872-9057
e-mail: info@dwyer-inst.com

Advertisement

loading
Need help?

Need help?

Do you have a question about the Digihelic DH3 Series and is the answer not in the manual?

Questions and answers

Related Manuals for Dwyer Instruments Digihelic DH3 Series

Summary of Contents for Dwyer Instruments Digihelic DH3 Series

  • Page 1 Bulletin B-30 Series DH3 Digihelic Differential Pressure Controller ® Specifications - Installation and Operating Instructions DWYER INSTRUMENTS, INC. Phone: 219/879-8000 www.dwyer-inst.com P.O. BOX 373 • MICHIGAN CITY, IN 46361, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com...
  • Page 2 DIMENSIONS 2-1/16 (4) 6-32 HOLES (52.39) EQUALLY SPACED ON A 5-1/8 (130.18) B.C. PANEL MOUNTING (50.80) 1/8 FEMALE NPT HIGH PRESSURE CONNECTION 1-1/4 (31.75) ø4-47/64 Ø5 (120.25) (127.00) 1/8 FEMALE NPT LOW PRESSURE CONNECTION Ø4 (101.60) 5/8 (15.88) FACE PANEL MAX 5-1/2 (139.70) O.D.

  • Page 3: Installation

    INSTALLATION LOCATION: Select a clean, dry location free from shock and vibration where tem- perature limits will not be exceeded. Distance from the transmitter to the receiver is limited only by total loop resistance. See ELECTRICAL CONNECTIONS. Tubing feeding pressure to the instrument can be practically any length required, but long lengths will increase response time slightly.
  • Page 4 MOUNTING: 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 insert the unit from the front. Slip on the mounting ring with the stepped side facing rear. Next, fit the snap ring into the narrow groove at back edge of bezel.
  • Page 5 WIRING The DH 3 uses a standard 15 pin male high density D-Sub connector available from most electronic distributors. A pre-wired 18˝ cable is included with each unit. See below table for cable color wiring information. FUNCTION 15 PIN CONNECTOR CABLE COLOR TERMINAL 12-24 VAC/VDC POWER...

  • Page 6: Key Functions

    FRONT PANEL SP2 DESCRIPTOR SP1 DESCRIPTOR ALARM DESCRIPTOR MULTIPLIER ALLO ALLO ALHI ALHI DESCRIPTOR VISABLE WITH SOME VELOCITY INWC INWC UNITS AND FLOW RANGES 1.000 1.000 INPUT VALUE MENU MENU SP/AL SP/AL KEY FUNCTIONS SP/AL SP/AL HOME POSITION FUNCTION MAIN MENU FUNCTION SUB MENU FUNCTION SP/AL SP/AL...
  • Page 7 SETTING SET POINTS AND ALARMS hot key provides direct access to the Set Point and Alarm MENU. The SP/AL SP/AL Set Point and Alarm MENUS that are displayed are based upon the Control (CtrL) SUB MENU. CONTROL MODE CONTROL MODE CONTROL MODE CONTROL MODE CONTROL MODE...
  • Page 8 MENU MAP MENU MAP MAIN MENUS SUB MENUS SETTINGS SETTINGS SP/AL SP/AL SP/AL SP/AL MENU MENU MENU MENU MENUS UNAVAILABLE BI-DIRECTIONAL RANGES AND RANGES ABOVE SP/AL SP/AL 25 IN. W.C. MENU MENU SP/AL SP/AL CONTINUED CONTINUED MENU MENU...
  • Page 9 SETTINGS SETTINGS MAIN MENUS SUB MENUS SP/AL SP/AL SP/AL SP/AL 0PEn MENU MENU MENU MENU SP/AL SP/AL MENU MENU CONTINUED CONTINUED SP/AL SP/AL MENU MENU...
  • Page 10 SETTINGS MAIN MENUS SUB MENUS SP/AL SP/AL SP/AL SP/AL Menus present only in pressure operation MENU MENU MENU MENU SP/AL SP/AL MENU MENU SP/AL SP/AL MENU MENU...
  • Page 11 Main Menu Selections (Upper Right Display Reads MENU ) SECr Security - Lock out access to Set Point and Alarm settings, or lock out access to all settings. OPEr Operation - Selection of Pressure, Velocity or Flow and corresponding engineering units. Output - Select a Single Set Point, 2 Set Points, or a Set Point and an Alarm mode of operation.

  • Page 12: Main Menus And Sub Menus

    MAIN MENUS and SUB MENUS SECr (Security) MAIN MENU SECr is the only SUB MENU in the security MENU. When the security SUB MENU is selected, the present security level is displayed in the upper right hand display. To change the security level, adjust the number displayed to the number shown in the following table for the desired security level.
  • Page 13 PrES (Pressure) SUB MENU For pressure measurement, the following units are available: INWC MMHG - Inches of water column - Millimeters of mercury FTWC MBAR - Feet of water column - Millibar MMWC - Millimeters of water column - Pascal CMWC - Centimeters of water column - Kilopascals...
  • Page 14 FLO (Flow) SUB MENU For flow measurements the following units are available: SCFM - Standard cubic feet per minute M^3H - Cubic meters per hour FLO r (Flow Range) SUB MENU - 99.99 x 1K flow range - 999.9 x 1K flow range Tables 3-6 show the flow ranges available, and the maximum duct size that can be set for each input range.
  • Page 15 XDIM and YDIM SUB MENUS ArEA These SUB MENUS become accessible if the instrument is set for flow. When meas- uring flow, the area of the duct must be specified. Tables 3 and 4 show the input range vs maximum flow and duct size. For a rectangular duct the maximum size is specified in square feet or meters.
  • Page 16 CtrL (Control) SUB MENU - Single set point - Two fully independent set points SPAL - Single set point and alarm 1SP (SP1 Reverse or Direct Acting) SUB MENU - Direct. Relay turns on with increasing pressure - Reverse. Relay turns on with decreasing pressure Relay Inactive Relay Active Relay Inactive...

  • Page 17: Alarm Adjustment

    CtrL The following alarm function SUB MENUS are activated when is set to SPAL AL (Alarm Type) SUB MENU - High alarm - Low alarm HILO - For a high/low guardband type alarm ALARM ADJUSTMENT Alarm settings are dependent upon the selected alarm mode. The DH3 differential ®...
  • Page 18 AL0S (Alarm Output State) SUB MENU CL0S - Alarm relay contacts close upon alarm condition 0PEN - Alarm relay contacts open upon alarm condition ALrE (Alarm Reset) SUB MENU ONOF - Automatic reset HOLD - Manual reset. An alarm is reset by the RESET key on the front panel, or an external reset switch.
  • Page 19 rESO (Resolution) SUB MENU The DH 3 is capable of displaying four digits of resolution. However, at very low pressures the instability of the pressure may cause fluctuations in the least significant digit causing the least significant digit to be of little value. 3DIG Three digit resolution ( ) can only be active when there is at least one digit...
  • Page 20 , apply full scale pressure to the unit. Press the ENTER key. The upper display will blink. Press ENTER again to complete the MENU calibration or press the key to cancel. ©Copyright 2008 Dwyer Instruments, Inc. Printed in U.S.A. 2/08 FR# 443555-00 Rev.1 DWYER INSTRUMENTS, INC. Phone: 219/879-8000 www.dwyer-inst.com...