Omega Speaker Systems DPS3301 Display Modes, How to Reset and Program Thermocouple Type or RTD

How to Reset and Program Thermocouple Type (or RTD)

A DPS3301-TC that is calibrated for a J, K, T, or E type thermocouple or an RTD model may be programmed for a specific thermocouple, or RTD (385/392) type, by going into SETUP mode (Look under ‘SETUP’). Alternately, a thermocouple/RTD may be selected by turning On power to the unit while holding in the appropriate key (see Figure 1). This procedure also clears the memory and programs factory defalult values for limits, rate timebase etc. Therefore, after performing Power-up reset, various parameters such as limits, rate time base etc., must be re-programmed to a desired value. However, if done in SETUP mode, no programmed parameters such as limits, Timers etc. are erased from the memory. It is recommended that thermocouple (RTD) selection be done in SETUP. Power-up reset should be performed if it is suspected that program memory may have been corrupted due to power surge, noise on electrical lines etc.

FIGURE 1. Thermocouple/RTD Selection Keys

E t/c	K t/c, RTD392,
	Thermistor

Memory Clear only T t/c

J (R, S or B) t/c,

RTD385

KEY	Input Type Selected
HI/LO	J (R, S or B , RTD 385)
	Thermistor
C/F	K (RTD 392)
ALARM	T
TIMER	E
RESET	Memory cleared – no
	factory default values
.	programmed.

NOTE: All keys, except RESET, clear memory and program necessary factory default values. RESET key clears memory only and programs no default values. However, previous thermocouple type is retained.

DISPLAY MODES

The DPS3301 can be programmed to display in any one of the following modes:

Mode	Display	Description
PROCESS	PrOCESS	Displays process value.
SETPOINT DEVIATION	SP. DEVN	Displays setpoint deviaition.
INSTANTANEOUS RATE	In. rAtE	Displays Instantaneous rate value.
PROCESS HIGH	Pr. HIGH	Displays process’ highest reading
PROCESS LOW	Pr. LO	Displays process’ lowest reading
ELAPSED TIME	ELPSd. T	Displays elapsed time.
TIMER 1 COUNT DOWN	tr1. Cnt	Display Timer 1 count down value
TIMER 2 COUNT DOWN	tr1. Cnt	Display Timer 2 count down value
SCAN	SCAn	Scans through all the above parameters
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