Omega Engineering DPS3301 manuale d’uso

http://www.omega.com e - mail: info@omega.com DPS3301 Series Wall-Mount Programmable Temperature Monitor[...]

Page 2 SPECIFICATIONS .......................................................................................................................................................... 4 DESCRIPTION ...............................................................................................................................................................[...]

Page 3 R ESETTING : ................................................................................................................................................................... 16 E LECTRO -M ECHANICAL R ELAY O PTIO N ....................................................................................................................... 16 Fi[...]

Page 4 SPECIFICATIONS Typical @ 25 C and rated supply voltage unless otherwise specified. INPUTS: • Input types: J,K,T,E,R,S,B t/c, RTD, Voltage, Millivolt, Current & thermistor • Cold junction compensation erro r: +/- 0.5C m ax (10C to 40C) • Open thermocouple indication: ‘OPEN TC’ displayed OPTIONS: • 240Vac @ 50 Hz Power Supply ?[...]

Page 5 DESCRIPTION Housed in a wall-mount, water-tight plastic enclos ure, the DPS3301 Series is a powerful temperature monitor/indicator. It accepts a single Thermocouple, RTD or Thermistor sensor input and then displays the temperature in either degrees C or F. In addition, it al so monitors a num ber of useful functions such as high and low proc[...]

Page 6 How to Reset and Program Th ermocouple Type (or RTD) How to Reset and Program Th ermocouple Type (or RTD) A DPS3301-TC that is calibrated for a J, K, T, or E ty pe thermocouple or an RTD model may be programmed for a specific thermocouple, or RTD ( 385/392) type, by going into SETUP mode (Look unde r ‘SETUP’). Alternately, a thermoc oupl[...]

Page 7 SEE SETUP ON HOW TO SELECT ONE OF THE DISPLAY MODES. RETAINING USER SETTINGS ON POWER DOWN DPS3301 saves all the programmed parameters in an EEPROM (electrically erasable programmable read only memory). An EEPROM stores the programmed parame ters even when the power is removed from the unit. However, it is important to note that if the pa ra[...]

Page 8 FLOW CHART PROGRAM CONTROLLER Back to SETUP COLD JUNCTION CALIBRATION INPUT CALIBRATION DISPLAY TIM E DISPLAY OPTION a. Process b. Setpt Devn. c. In. Rate d. Process High e. Process Low f. Elapsed Time g. Timer 1 C ount h. Timer 2 C ount i. Scan all RATE TIMEBASE INPUT SIGNAL TYPE SETPT PROGRAM LI MIT2 Configure Limit3 as Process or Rate PRO[...]

Page 9 SETUP MODE Setup is used for configuring vari ous par ameters of DPS3301 unit. These parameters include entering limits, timers, dead-bands etc. Entering and Exiting Setup Mode: To get into setup mode, press and hold SETUP key. The display will show ELPSd t and then the value of elapsed time. Keep holding-in ‘ SETUP’ key till the display[...]

Page 10 'PROGRAM CONTROLLER' MODE Display Time On entering Program Controller mode, the very first step lets you program is the display time. This determines the length of time (in seconds) that any VALUE is displayed before message, such as ‘PROCESS’ is flashed. The unit will first show 'dSPLy t' (for Display Time), and the[...]

Page 11 Cold Junction adjustment: After setting Heat/Cool mode, the next parameter is the cold junction reference temperature adjustment. The display will first show 'COLd JN' , and then the cold junction temperature will be indicated. Use ‘^DIGv’ key to adjust until the display reads the proper temperature. Once the correct temperatu[...]

Page 12 NOTE 1: The unit must be powered up for at least ten minutes before any adjustments are made. NOTE 2: For calibrating units with RTD or Thermistor inputs, connect the source to input c onnector, dial in a temperature near high end of the scale and adjust gain potentiometer on the back of the unit (See figure 7 for reference). Thermocouple t[...]

Page 13 Programming Limit 3: As Process Limit: If Limit 3, in the above step, was configured as a Pro cess limit, then the message displayed on entering this mode will be ‘PrG Lt3’ . This will be followed by displaying the current value of Limit 3 . Use ‘<DIG>’ key to move flashing to the next digit and ‘^DIGv’ key to increment/de[...]

Page 14 energized. In Mode 1 the timer is ON for a programmed amount of time after a temperature limit is reached (limit1 for Timer 1 and Limit 2 for Tim er 2). When programmed amount of tim e has elapsed, the timer is de- energized. Mode 2 is used to produce a programmable tim e delay af ter the temperature limit is reached. After the delay, the t[...]

Page 15 Audio Alarm On/Off: This unit supports an audio alarm option which comes on when ever a limit value is exceeded. This alarm can be turned On or Off, as desired. The selection is made by pushing ‘^DIGv’ key. If the alarm is ON, the display will read ‘ALR ON’ (Alarm On). Alternately, it will display ‘ALR OFF’ (for ‘Alarm Off’)[...]

Page 16 setpoing will be indicated. Deviation Alarm: Limit 4 has the capability to work either as process or as deviation alarm. This configuration is done during setup (look under SETUP). Also entered during setup is the alarm value. Programmed value is absolute and it works on negative as well as positive deviation e.g. if de viation alarm is set[...]

Page 17 limit alarms. (Check model number printed on the unit fo r option). If ordered with relays, then these relays are programmed during Setup to operate as Normally Op en (NO) or Normally Closed (NC). The default setting is Normally Open. Each of these limit relays pr ovides a switched output whenever a limit is reached. The maximum rating for [...]

Page 18 To display Timer #1 value, push the TIME key twice . The first push shows elapsed time, while the second push will first display 'tr1 Cnt' (for T ime r1 Count) and then Timer 1 value. To display Timer #2 value, push TIMER key three times . First two pushes display elapsed time and timer 1 value respectively, while the third push b[...]

Page 19 HIGH AND LOW PEAKS A useful feature provided by the DPS3301 system is its ability to track high and low temperature peaks. This function is useful if a process must be left unattended for a long period of time, and it is necessary to find temperature extremes during the unattended period. High and low process peaks are displayed by pushing [...]

Page 20 ‘SIGNAL CONNECTOR’ in figure 4. Also indicated ar e the input signal’ s positive and negative polarities for thermocouple connection. These markings are also on the printed circuit board in front of the connector. Care should be taken to connect the positive and negative legs of the signal source to the proper term inals on the connec[...]

Page 21 FIG 4. DPS3301 Series TERMINAL COMPARTMENT 1 2 3 4 5 6 7 8 9 10 11 12 1 3 14 POSITIVE SIGNAL NEGATIVE SIGNAL GAIN ADJ UST OFFSET ADJUST (For Millivolt, T/C input) OUTPUT CONNECTOR PWR GND L2 L1 SIGNAL CONNECTOR + - L1= NEGATIVE SUPPLY L2= POSITIVE SUPPLY (FOR DC POWER S UPPLY OPTIO N)[...]

DIRECT INTERFACE TO UNIVERSAL RELAY MODULE For high amperage loads, DPS3300 series units can be used in conjunction with Universal Relay Module (Model RELAY-URM400/800) which provide up to e ight 15 ampere relays. Both open collector and relay models can be interfaced directly to RELAY-URM400/800 units. Page 22 RELAY-URM400/800 series relay module [...]

Page 23 MOUNTING 120mm 4.72” PICTURE HANGING -TY PE FIXTURE FOR MOUNTI NG SCREW MOUNTING SCREW SLOTS (Mount Screws from front—see picture below ) 151mm 5.94” SLOTS IN TERMINAL COMPARTMENT FOR MOUNTING SCREWS[...]

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