An O ME GA Te c h n o l o g i e s Co m p a n y
M2113/1294
INSTRUCTION
SHEET
DP18 Series
Model DP18-P9
Differential Process Indicator
CCD1294APC1B
1
10
D
C
B
A
+
-
REAR VIEW
Setpoint R1
(option)
Setpoint R2
(option)
FRONT VIEW
FIG. 2
FIG. 1
SIGNAL
INPUT
SPAN : ADJUST THE MAXIMUM READING.
OFFSET : NOT IN SERVICE
SPAN ADJUSTMENT IS ACCESSIBLE BEHIND THE LOW DOOR.
Isolated digital output
(option)
HOLD,
latch the reading
display, while these pins
are linked
ANALOG OUTPUT
(OPTION)
POWER SUPPLY
see instrument label
DISPLAYS . . . . . . . . . . . . . . . . . . . . . . 3 digits, 7 segment, red LED
HEIGHT . . . . . . . . . . . . . . . . . . . . . . . . 0.56" (14.2 mm.)
SYMBOLS . . . . . . . . . . . . . . . . . . . . . . ± 1.8.8.8
DECIMAL POINTS . . . . . . . . . . . . . . . . Selectable by jumpers
OVERRANGE INDICATION . . . . . . . . . Display flashes 1999
INPUT CONFIGURATION . . . . . . . . . . . Bipolar single
ZERO . . . . . . . . . . . . . . . . . . . . . . . . . Automatic
SPAN ADJUSTMENT . . . . . . . . . . . . . . ± 5 %
CONVERTER . . . . . . . . . . . . . . . . . . . . Dual-slope, average value
POLARITY . . . . . . . . . . . . . . . . . . . . . . Automatic ±
SIGNAL INTEGRATION PERIOD . . . . . 80 ms.
READ RATE . . . . . . . . . . . . . . . . . . . . 3.12 / sec.
HOLD . . . . . . . . . . . . . . . . . . . . . . . . . Optional
NOISE REJECTION NMR . . . . . . . . . . . 50 dB. 50/60 Hz.
ACCURACY . . . . . . . . . . . . . . . . . . . . 0.15 % ± 1 count
WARMUP TO RATED ACCURACY . . . 2 minutes
SPAN TEMPCO . . . . . . . . . . . . . . . . . . 100 ppm.
ZERO TEMPCO . . . . . . . . . . . . . . . . . . 2.5 µV/°C.
OPERATING TEMPERATURE . . . . . . . 0 to 50 °C (32 to 122 °F)
STORAGE TEMPERATURE . . . . . . . . . -40 to 80 °C (-40 to 176 °F)
WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . 310 gr. (0.68 lb)
CASE MATERIAL . . . . . . . . . . . . . . . . ABS, DIN 43700, black color
STANDARD POWER . . . . . . . . . . . . . . 115 Vac. ± 10 %, 50/60 Hz.
POWER CONSUMPTION . . . . . . . . . . . 5.5 VA for AC.
ELECTRICAL CONNECTIONS . . . . . . . Push-in cable connectors
BURN-IN . . . . . . . . . . . . . . . . . . . . . . . 24 h.
½
SPECIFICATIONS
SPAN
OFFSET
FIG. 3
A
B
C
SPAN ADJUST
ZERO ADJUST
B
A
SIGNAL CONDITIONER COMPONENTS VIEW
THIS SIGNAL CONDITIONER INPUT ALLOWS THE DISPLAY IN ENGINEERING UNITS OR PERCENTAGES, THE DIFFERENCE BETWEEN TWO
PROCESS SIGNALS OF 0-20 mA OR 4-20 mA.
SIGNAL INPUT "A" MUST CORRESPOND, THEORETICALLY TO THE HIGHER SIGNAL,IN ORDER THAT THE DISPLAY READING BE POSITIVE.
IF THE SIGNAL "B" IS HIGHER THAN "A", THE DISPLAY READING WILL BE NEGATIVE.
CLOSE THE APPROPRIATE DECIMAL POINT JUMPER (FIG.5), CORRESPONDING TO THE RANGE SELECTED.
INSTRUMENT TO READ THE DIFFERENCE BETWEEN TWO PROCESS SIGNALS AND DISPLAY IN
ENGINEERING UNITS.
SIGNALS CAN BE : 0-20 mA. or 4-20 mA.
Signal low
Signal low
Signal high
Signal high
out
out
TRANSDUCER "A"
TRANSDUCER "B"
