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Dwyer Instruments Series DH3 Digihelic, Operating And Installation Instruction

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Dwyer Instruments Series DH3 Digihelic Operating And Installation Instruction Download Page 11

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.

OUt

Output - Select a Single Set Point, 2 Set Points, or a Set Point and an Alarm

mode of operation.

d.S

Display - Monitor and adjust display related settings: Peak, Valley, display reso-

lution, % output and dampening.

AdU

Advanced functions - Modify advanced function parameters, transmitter output

scaling, Maintenance Set Point settings and calibration.

1.800.868.7495

QualityInstruments-Direct

.ca

Summary of Contents for Series DH3 Digihelic

Page 1: ...e Controller Specifications Installation and Operating Instructions DWYER INSTRUMENTS INC Phone 219 879 8000 www dwyer inst com P O BOX 373 MICHIGAN CITY IN 46360 U S A Fax 219 872 9057 e mail info dwyer inst com 1 800 868 7495 QualityInstruments Direct ca ...

Page 2: ... 4 digit LCD 0 4 height LED indicators for set point and alarm sta tus Electrical Connections 15 pin male high density D Sub connection 18 46 cm cable with 10 conductors included Process Connections 1 8 female NPT Side or back connections Mounting Orientation Mount unit in verti cal plane Size 5 127 mm O D x 3 1 8 79 38 mm Weight 1 75 lbs 794 g Agency Approvals CE SWITCH SPECIFICATIONS Switch Type...

Page 3: ... ver tically PRESSURE CONNECTIONS For installation convenience two sets of 1 8 female NPT pressure ports are supplied Be sure to seal the unused ports with pipe plugs included Positive Pressure Connect tubing to HIGH PRESSURE port and vent LOW PRESSURE port to atmosphere Negative Vacuum Pressure Connect tubing to LOW PRESSURE port and vent HIGH PRESSURE port to atmosphere When operating this devic...

Page 4: ...ing and set it against snap ring Tighten screws against rear of panel See Fig B Surface Mounting Drill 3 3 16 4 76 mm diameter holes for mounting and cut a 9 16 x 1 1 2 14 3 x 38 1 mm opening for access to terminal block as indicated in Fig B If rear pressure connections are to be used also provide 1 2 diameter holes as shown in Figs A and C Insert 6 32 machine screws from rear of mounting surface...

Page 5: ...erminals are rated CLASS 2 4 ISOLATION All inputs and outputs to each other 500 VAC 5 4 20 mA Transmitter Check the specifications for the device receiving this signal for input resistance Typical 250 to 600 OHMS 600 OHMS maximum 5 Function 12 24 VAC VDC Power 12 24 VAC VDC Power 4 20mA XMTR Output 4 20mA XMTR Output SP1 Relay N O SP1 Relay Com SP1 RELAY N C SP2 or ALarm Relay N O SP2 or ALarm Rel...

Page 6: ...sition Return to previous menu Increments a value Decrements a value Changes a value or setting Press ENTER and display will blink Adjust with UP or DOWN arrows Press ENTER to store Display will stop blinking Peak Valley SUB MENU resets display to present value SP AL MENU UP ARROW DOWN ARROW ENTER RESET KEY FUNCTIONS INWC INWC 1 000 1 000 SP1 SP1 SP2 SP2 ALHI ALHI ALLO ALLO SP AL SP AL RST RST MEN...

Page 7: ...ing a set point and dead band simply adjust SP1H or SP2H for the desired relay turn on point and then adjust SP1L or SP2L for the desired relay turn off point PRESSURE PRESSURE 0 0 0 0 TIME TIME 0 2 0 2 0 4 0 4 0 6 0 6 0 8 0 8 1 0 in w c In the above graph an instrument with a 1 0 range would have the SP1 relay turn on at 0 8 and off at 0 4 SP1H sets the relay turn on point and SP1L sets the relay...

Page 8: ...ENU MAP MENU MAP CONTINUED CONTINUED SETTINGS SETTINGS MAIN MENUS SUB MENUS MENUS UNAVAILABLE FOR BI DIRECTIONAL RANGES AND RANGES ABOVE 25 IN W C E E MENU MENU 1 800 868 7495 QualityInstruments Direct ca ...

Page 9: ...9 CONTINUED CONTINUED SETTINGS SETTINGS MAIN MENUS SUB MENUS 0PEn E E MENU MENU 1 800 868 7495 QualityInstruments Direct ca ...

Page 10: ...10 MAIN MENUS SUB MENUS SETTINGS Menus present only in pressure operation E E MENU MENU 1 800 868 7495 QualityInstruments Direct ca ...

Page 11: ...orresponding engineering units OUt Output Select a Single Set Point 2 Set Points or a Set Point and an Alarm mode of operation d S Display Monitor and adjust display related settings Peak Valley display reso lution output and dampening AdU Advanced functions Modify advanced function parameters transmitter output scaling Maintenance Set Point settings and calibration 1 800 868 7495 QualityInstrumen...

Page 12: ...on FLO Flow DIA Diameter If the instrument is set for Velocity the OPEr MENU will have an additional KFAC SUB MENU If the instrument is set for Flow the OPEr MENU will have additional KFAC and ArEA SUB MENUS These will be discussed under Velocity and Flow When scrolling through the OPEr SUB MENUS the measurement type the unit is currently set for will show the units in the upper right display The ...

Page 13: ...L Velocity SUB MENU For velocity measurement the following units are available SFPM Standard feet per minute M S Meters per second Table 2 Available Velocity Ranges NOTE Air velocity and flow readings are based upon standard dry air conditions with an ambient temperature of 70 F and a barometric pressure of 29 92 INHG INPUT RANGE INWC 0 0 1 0 0 25 0 0 5 0 1 0 2 5 0 5 0 10 0 25 SFPM RANGE 0 1266 0 ...

Page 14: ...Pitot tube the manufacturer may specify a K Factor The adjustment range is 0 01 to 2 00 The factory setting is 1 Table 4 FLOr HI Maximum Duct Size English RANGE IN WC 0 1 0 25 0 5 1 2 5 5 10 25 SCFM RANGE 999 9 x 1K 999 9 x 1K 999 9 x 1K 999 9 x 1K 999 9 x 1K 999 9 x 1K 999 9 x 1K 999 9 x 1K MAX DUCT SIZE SQ FT 789 8 499 5 353 1 249 7 157 9 111 7 78 9 49 9 Table 5 FLOr LO Maximum Duct Size Metric ...

Page 15: ...tion for FLOr HI or entered in millimeters with 1 millimeter resolution ArEA Area select CIR for a circular duct or RECT for a rectangular duct If a circular duct is selected the DIA SUB MENU will be activated If a rectangular duct is selected the XDIM and YDIM SUB MENUS will be activated DIA Diameter enter the diameter of a duct XDIM Enter the X dimension of a duct YDIM Enter the Y dimension of a...

Page 16: ...Two fully independent set points SPAL Single set point and alarm 1SP SP1 Reverse or Direct Acting SUB MENU DIR Direct Relay turns on with increasing pressure REV Reverse Relay turns on with decreasing pressure 0 100 Process Direct Acting Time SPH SPL Relay Inactive Relay Active 1 800 868 7495 QualityInstruments Direct ca ...

Page 17: ...alarm may be configured as a High Alarm Low Alarm or High Low Alarm Alarm settings are all absolute and may be set to anywhere within the range of the instru ment The dead bands of the alarms are fixed at 1 of full scale MIN PRESSURE MAX PRESSURE ALHI Relay OFF Relay ON HIGH ALARM FUNCTION MIN PRESSURE MAX PRESSURE ALLO Relay ON Relay OFF LOW ALARM FUNCTION MIN PRESSURE MAX PRESSURE ALLO Relay ON ...

Page 18: ...fore the alarm condition is recognized The alarm delay is adjustable from 0 3600 seconds d S Display MAIN MENU PEAK Peak value rESO Resolution VALy Valley value Pd S Process display ZERO Zero DAMP Dampening level PEAK Peak SUB MENU The Peak feature stores the highest pressure reading the instrument has measured since the last reset or power up At power up PEAK is reset to the present pressure read...

Page 19: ...just from 1 16 Dampening stabilizes the display from instabilities due to things such as vibration and excessive pressure fluctuations The dampening setting adjusts the amount of readings that are averaged for each display update Adjust the dampening value until the display reads a stable value for the application AdU Advanced MAIN MENU POL Process output low ZERO Zero calibration POH Process outp...

Page 20: ...th the display reading ZERO press the ENTER key The upper display will blink Press ENTER again to complete the zeroing of the instrument or press the MENU key to cancel SPAN Calibration With the display set to SPAN apply full scale pressure to the unit Press the ENTER key The upper display will blink Press ENTER again to complete the calibration or press the MENU key to cancel SP AL SP AL Copyrigh...

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