LED Digital | Analog Combination
Crompton Instruments model 007-DI features a combination of
the traditional 250° 4 1⁄2" switchboard indicator with the trend
indication plus the benefits of wide angle LED visibility. This rugged
shock and vibration resistant design provides precision accuracy
and instantaneous reading via the bright in-dial mounted 3 1⁄2" digit
LED display.
Description
Model 007-DI digital analog indicators are ideal for all applications where moving
pointer instruments are preferable to indicate trend with the simultaneous display
of a high visibility precision LED readout for increased user interface.
The 007-DI is interchangeable with other analog and digital instruments designed
to directly mount in to a standard ANSI-C39. 4 1⁄2" switchboard cut-out.
Available in side, center, or off-set zero versions, the 007-DI can accept AC and DC
current and voltage inputs as well as a wide range of transducer outputs, making it
suitable for a variety of other applications including low-load current, temperature,
speed, Watt/VArs, percent and level.
Features
• Rugged shock and vibration
resistant pivot and jewel
design
• High accuracy LED display
• Wide selection of AC and
DC inputs
• Maximum trend indication
visiblity
• Input isolation
• External decimal point
selction option
• Interchangeable with 4 1/2"
switchboard meters
Benefits
• Cost effective
• Meets all the requirement
of ANSI-C39.1 (1981)
• IP54 (NEMA 3) protection
• Optional IP55 (NEMA 4)
gasket
• Bump, shock and vibration
proof
• Customized option and
features
Applications
• Switchgear
• Distribution systems
• Generator sets
• Control panels
• Energy management
• Building management
• Utility power monitoring
• Process control
• Motor control
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Specifications
Inputs DC Voltage: 20mV-600V (1MΩ input impedance as standard)
DC Current: 1mA-1A, 4 to 20mA (Voltage drop 200mV nominal)
External shunt operation (50mV and 100mV)
AC Voltage: 200mV-600V (1 kΩ /volt) AC Current: 1mA-999mA
(Using internal shunt, voltage drop 200mV nominal) 1A, 2A, 5A
and 10A using internal current transformer
Common mode rejection =>80dB @ 50/60Hz
Overload Voltage: x 1.2 continuous. x 1.5 for 10 seconds
Current using internal CT: x 1.2 continuous. x 10 for 10 seconds
External power Standard: 120 and 240V ±15%
requirement Optional: 480V ±15% AC 40-60Hz
Burden 3VA @ 60Hz
DC Standard: 12, 24, 48, 110 and 125V ±15%
Display analog Long-scale moving coil. 250° deflection. Scale length 6.8"
Response time less than 2.5 seconds
Display options Center or offset zero. Scale plate in colors other than white
Colored lines or segments on scale
Digital display 3 1⁄2 digit red LED. 7 segment (7.6mm, 0.3" high). Right hand
decimal points. Polarity indication: positive / none. Negative /
horizontal bar “ - ”. Update time (standard): 1 per second
Accuracy - analog DC and AC ±1% of FSD (calibrated at 25°C)
Accuracy - digital DC: ±0.05% of reading ±1 count ±100ppm of reading / °C max
AC current: 0-1 Amp ±0.1% reading ±3 counts ±150ppm of
reading / °C
AC current: 0-10 amps ±0.1% reading ±10 counts ±150ppm of
reading / °C (maximum)
AC voltage: ±0.1% of reading ±3 counts ±150ppm of
reading / °C (maximum)
Zero ±1 count ±0.2 counts/°C (maximum),
DC offset scale only. Warm-up time: 1 minute
Long term stability ±2 counts
Calibration check Recommended 12 monthly intervals
Enclosure code IP54 (optional IP55 using panel gasket)
Operational
temperature 0 to 60°C (32° - 140° F)
Storage temperature -20° to 60°C (-4° - 140° F)
Humidity Up to 90% relative @ 55° C. Tests to BS2011 part 2DA
Isolation test voltage 2kV RMS 60Hz for 1 minute
Interference rejection To IEEE STD472, ANSI C37 90A, SEN 361503, IEC 255-4