Omega DPS3100 series, User Manual

Page 15

Setup For Relay Latch/Non-Latch 

 
After setting DISPLAY TIME, the next parameter determines whether the output relays will operate in a Latched or Non-
Latched mode. 

Relay Latched Mode: 

In this mode the relay is activated when its LIMIT value is exceeded and stays 
activated until the operator manually resets the relay.  To manually reset a channel 
relay, use 

CH. SEL

 key to step to the desired channel number, and while keeping 

the 

CH. SEL

 key pressed, simultaneously press the 

RESET

 key. 

Relay Non-Latched Mode: 

In this mode the relay is activated when its LIMIT value is exceeded.  The relay is 
deactivated when the channel reading drops below the LIMIT value by the 
DEADBAND setting. 
 
The display will show 

'NON  LCH'

 for Non-Latch mode, or 

'LAtCH' 

for Latch 

mode.  Use 

^v

  key to toggle between settings.  Once the desired setting is 

displayed, push 

SETUP

 key to enter that value and go to Setup For Cold Junction 

Calibration. 
 

Setup for Buzzer 

 
The next step turns the buzzer on or off. Turning on the buzzer provides an audio 
alarm when ever any limit gets activated. Display format is 

'ALr  On'

  (for 'alarm 

on') or 

'ALr  OFF'

 (for 'alarm off'). Push ^v key to select desired mode.  After 

completing the selection, push SETUP key to go to next step. 
 
 

Setup For Cold Junction Calibration 

 
After setting Relay Latch/Non-Latch, the next parameter is the cold junction 
reference temperature.  The display will first show 

'COLd  JN'

 , and then the cold 

junction temperature will be indicated.  Use the

 ^v

 key to adjust until the display 

reads the proper temperature. Once the correct temperature is displayed, push the 

SETUP

 key to enter that setting and go to Setup For Channel Calibration.  

NOTE 1:

 The unit must be powered up for at least ten minutes before adjustments 

are made to cold junction reading. 

NOTE 2:

 Press 

CH.  SEL

 key to see the Cold Junction reading directly in millivolts. 

Setup For Channel Calibration 

 
After setting the Cold Junction Reference temperature, the next step is a display of channels for calibration purposes.  This 
allows easy calibration of each channel without the instrument scanning to the next channel. The display will show the 
channel input reading in the form  

'x-nnnnn'

 where x=channel # and nnnnn is the channel reading. 

NOTE:

  ONLY channels that are turned ON will be displayed at this time! 

 
Press 

SETUP

 key to step the display to the next channel.  

Input Range Setup (for current and voltage): 

Voltage Range Setup (0-10vdc) 

 
 After all the enabled channels have been displayed, the VOLTAGE range may 
be setup.  The display will briefly show 

'U   rAnGE' 

 (for "Voltage Range") 

followed by the current setting.  Use 

^v

 key (ref. Setup For High Scale) to set the desired VOLTAGE value.  Once the