Omega DP18-AC1 Instruction Sheet

An OME GA Te c h n o l o g i e s Co m p a n y
DP18 Series
Models DP18-AC1 / -AC2 / -AC3 / -AC4
AC Milliammeter
INSTRUCTION
SHEET
AC CURRENT INSTRUMENT, 3
VALUE OF TWO RESISTORS (SEE TABLE ON FIG.3 ). THE READING CAN NOT BE MODIFIED IN ENGINEERING UNITS UNLESS THE VALUES
OF R S AND R4 ARE CHANGED. THEREFORE USING THE STANDARD VALUES THE DISPLAY WILL SHOW EXACTLY THE VALUE PRESENT
AT THE INPUT SIGNAL.
SPECIFICATIONS
DISPLAYS . . . . . . . . . . . . . . . . . . . . . . 3
HEIGHT . . . . . . . . . . . . . . . . . . . . . . . . 0.56" (14.2 mm.)
SYMBOLS . . . . . . . . . . . . . . . . . . . . . . 1.8.8.8
DECIMAL POINTS . . . . . . . . . . . . . . . . Selectable by jumpers
OVERRANGE INDICATION . . . . . . . . . Display flashing 1999
INPUT CONFIGURATION . . . . . . . . . . . Bipolar single
ZERO . . . . . . . . . . . . . . . . . . . . . . . . . Automatic
SPAN ADJUSTMENT . . . . . . . . . . . . . . ± 5 %
CONVERTER . . . . . . . . . . . . . . . . . . . . Dual-slope, average value
SIGNAL INTEGRATION PERIOD . . . . . 80 ms.
READ RATE . . . . . . . . . . . . . . . . . . . . 3.12 / sec.
RANGES . . . . . . . . . . . . . . . . . . . . . . . See table selection
HOLD . . . . . . . . . . . . . . . . . . . . . . . . . Optional
NOISE REJECTION NMR . . . . . . . . . . . 50 dB. 50/60 Hz.
ACCURACY . . . . . . . . . . . . . . . . . . . . 0.2 % ± 1 count
WARMUP TO RATED ACCURACY . . . 2 minutes
SPAN TEMPCO . . . . . . . . . . . . . . . . . . 150 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.
FIG. 3
GROSS SPAN ADJUSTMENT
SIGNAL INPUT
mAac
MODEL
DP18-AC1
DP18-AC2
DP18-AC3
DP18-AC4
SELECT THE DESIRED RANGE, MODIFIYNG THE RESISTANCE VALUE R s AND R4, TO GET THE READING DESIRED,
ACCORDING TO THE VALUES SHOWN IN THE TABLE.
M2105/1294
½
DIGITS, WITH FOUR RANGES SELECTABLE ON THE SIGNAL CONDITIONER BY ONLY MODIFIYNG THE
½
digits, 7 segment, red LED
PT1
C
R4
B
A
RANGE DISPLAY
mAac. READING
2 1.999
20 19.99
199.9
200
2000 1999
FIG. 1
SPAN : ADJUST THE MAXIMUM READING.
OFFSET : NOT IN SERVICE
SPAN ADJUSTMENT IS ACCESSIBLE BEHIND THE LOW DOOR.
FIG. 2
Isolated digital output
(option)
SIGNAL
INPUT
ANALOG OUTPUT
(OPTION)
HOLD,
latch the reading
display, while these pins
are linked
RANGE SELECTION
R S
SIGNAL CONDITIONER
COMPONENTS VIEW
RESOLUTION
DECIMAL POINT
CLOSE JUMPER
mA.
FIG.5
D3
0.001
0.01
D2
D1 0.1
1
-----
CCD1294APC2BA
FRONT VIEW
SPAN OFFSET
REAR VIEW
Setpoint R1
Setpoint R2
(option)
(option)
D
C
1
10
B
A
+
-
POWER SUPPLY
see instrument label
IMPEDANCE R4 value
in Ω in Ω
R
S
Ω
221
Ω
Ω
1650
22.1
Ω
2.21
Ω
Ω
1580
0.187