Omega Engineering DP3300 Series 用户手册

DP3300 Series User’s Manual 

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When this parameter is set for "Normally Closed", the relay is closed when readings are below LIMIT, and opens when the 
channel reading exceeds its LIMIT value. 
 
The display will show 'LTx  N.O.' (where ‘x’ is the channel number) for a Normally Open setting or 'LTx    N.C.' for a 
'Normally Closed' setting.   Use ^v key to toggle between two settings.  Once the desired setting is displayed, push SETUP key to  
go on to setting up limits 2 and 3 for  the channel.  The  display  format is 'LT2   N.O' or  'LT2   N.C.' and 'LT3   N.O' or 'LT3  
N.C' respectively. 
 
 

 
After setting a channel's relay for NORMALLY OPEN/CLOSED operation, the next step sets the 3 letters that follow the process 
value in the display.  These 3 letters represent the measurement units for analog channels (only analog channels have this feature).  
Any desired combination of the following letters may be programmed: 
 
  A,B,C,D,E,F,G,H,I,J,L,N,O,P,Q,R,S,T,U,Y 

 

 
The letter selection goes up to 'Y' and down to 'A' and from 'A' down   to ' - ' sign. The ' -'  sign indicates that that particular 
digit will be blanked e.g. if the desired engineering unit was feet, then the display can be programmed to show ' Ft'. In this case 
one letter (the letter to the left of letter 'F') will be blanked out by programming a ' - ' sign in its location. 
 
If no engineering units have been programmed, then three dots will be displayed.  Whenever the input type is changed from one 
type to another, the system automatically clears the engineering units. Therefore, it is necessary to enter new units after a change 
in the input type has been made. The only exception in this case is when a thermocouple selection is made.  In that case, the unit 
automatically enters an 'F'  or  'C' (Fahrenheit or Centigrade) depending upon the selected display units.  However,  just like the 
other inputs, any alternate units may be programmed for thermocouples. 
 
The display will first show 'C1   UNIt'  after which the present UNITS setting will be displayed. Use ^v key (ref. Setup For High 
Scale) to setup the desired UNITS .  Push SETUP key after the desired UNITS are displayed. 
 
 

 
Rate time base is used for calculating rate for the selected channel. The units for  Time base are seconds and it can be entered in 
increments of 1000

th

 of  a second. Minimum Time base is one second.  

 
The display will first show 'rAtE  tb' after which the current Time Base value will be displayed. Use ^v key (ref. Setup For High 
Scale) to enter desired value.  Push SETUP key after programming Rate Time base. 
 
 

 
The display will briefly show  'IP  TYPE' (for "Input type") after which the present input type for the selected channel will be 
displayed.  Various inputs available are: J  T/C, CR.AL  T/C (Chromel Alumel, type K  T/C), T  T/C,  E  T/C, CURRENT, or 
VOLTAGE.  If the unit has a noble metal thermocouple option, then only one T/C can be selected i.e. B T/C, R T/C, or S T/C. 
Use ^v key to display the desired input type. Once the desired input type is displayed, push SETUP key to enter that input type 
and go to the next step. 
 
 

SYSTEM CONFIGURATION: 

 
After entering correct pass-code and selecting the blinking 'SYS' (ref. SETUP section), the DP3300 goes into the SYSTEM 
CONFIGURATION mode.  This mode allows setting up parameters that affect all the channels or the instrument in general.