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Omega Engineering DP18-AT2 Instruction Sheet

Dp18 series ac ammeter
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An OME GA Te c h n o l o g i e s Co m p a n y
DP18 Series
Model DP18-AT2
AC Ammeter
INSTRUCTION
SHEET
THE INPUT ALLOWS DIRECT CONNECTION TO A CURRENT TRANSFORMER (CT) WITH A 5 A. SECONDARY, WITHOUT NEED FOR AN
INTERMEDIATE STEPDOWN.

SPECIFICATIONS

DISPLAYS . . . . . . . . . . . . . . . . . . . . . . 3
HEIGHT . . . . . . . . . . . . . . . . . . . . . . . . 0.56" (14.2 mm.)
SYMBOLS . . . . . . . . . . . . . . . . . . . . . . 1.8.8.8
DECIMAL POINTS . . . . . . . . . . . . . . . . Selectable by jumpers
OVERRANGE INDICATION . . . . . . . . . Display flashes
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 fig. 3
HOLD . . . . . . . . . . . . . . . . . . . . . . . . . Optional
NOISE REJECTION NMR . . . . . . . . . . . 50 dB. 50/60 Hz.
ACCURACY . . . . . . . . . . . . . . . . . . . . 0.2 % ± 1 count
WARMUP TO RATED ACCURACY . . . 5 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
PLACE THE PLUG-IN JUMPER ON THE
SELECTOR S1, IN FUNCTION OF THE
NOMINAL CURRENT TRANSFORMER,
AND THE DECIMAL POINT JUMPER
ON THE CORRESPONDING POSITION
(FIG.5). TO OBTAIN THE INDICATED
PERFORMANCE, USE CURRENT
TRANSFORMERS CLASS 0.5 OR BETTER.
M2099/1294
AC AMMETER for current transformer X/5
½
digits, 7 segment, red LED
PT1
C
SIGNAL CONDITIONER
B
COMPONENTS VIEW
A
I NOMINAL
READING
Amp.AC
Amp.AC
5
5.00
10
10.00
15
15.0
25
25.0
40
40.0
50
50.0
60
60.0
100
100.0
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
SELECTOR S1
CLOSE
RESOLUTION
I NOMINAL
JUMPER
Amp.AC
Amp.AC
D
0.01
F
A
B
C
0.1
D
E
F
CCD1294APC2BA
FRONT VIEW
SPAN
OFFSET

REAR VIEW

Setpoint R1
Setpoint R2
(option)
(option)
D
C
10
B
A
+
-
POWER SUPPLY
see instrument label
B
D
F
A
C E
G
CLOSE
READING
Amp.AC
JUMPER
150
150.0
G
250
250
B
400
400
C
500
500
D
600
600
E
1000
1000
F
1500
1500
G
1
RESOLUTION
Amp.AC
0.1
1

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  Summary of Contents for Omega Engineering DP18-AT2

  • Page 1: Specifications

    An OME GA Te c h n o l o g i e s Co m p a n y DP18 Series Model DP18-AT2 AC Ammeter INSTRUCTION SHEET M2099/1294 AC AMMETER for current transformer X/5 THE INPUT ALLOWS DIRECT CONNECTION TO A CURRENT TRANSFORMER (CT) WITH A 5 A. SECONDARY, WITHOUT NEED FOR AN INTERMEDIATE STEPDOWN.
  • Page 2 DP18 Series OPTIONS AND POWER SUPPLIES AVAILABLE FOR DP18 Series CONTROL OUTPUT/COMMUNICATIONS OPTIONS Select a maximum of one option from each column OPTION DESCRIPTION PARALLEL BCD, OPTOISOLATED SINGLE SETPOINT, 3 Amp. Relay DUAL SETPOINT, 3 Amp: Relays APH1 ANALOG PEAK HOLD ISOLATED SERIAL OUTPUT RS-232 SELECTION OF : DECIMAL POINTS AND SPECIAL OPTIONS FIG.