DEIF A/S DQ-240 Series

240 ° Long Scale DIN Analog Panel Meters

Deif DQ-240, 240° DIN Meters

 Characteristics:
  • Full Line of Long Scale , 240 ° arc meters
  • Interchangeable scales
  • Available in:
  • Mechanism
    • Moving coil – DC Applications
  • Suspension
    • Taut-band – frictionless- ideal if subjected to shock
    • Pivot and Jewel- Rugged – ideal if subjected to vibration
  • Available in 48×48, 72×72, 96×96 and 144x144mm
  • Overload of 120% of rated capacity, continuous
  • Accuracy: DC ±1.5% of full scale
  • Tracking: ± 2% DC
  • Overshoot: ©˜5% of scale length
  • IP54 or Tropicalized meters available
  • Wide Range of inputs – to customer’s specifications
Product Description:
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DEIF has an extensive range of 48, 72, 96 and 144mm , long scale style panel meters offering measurement of all electrical and electronic parameters. Meters are shock resistant and vibration proof and supplied with terminal covers. A selection of slide in dials and customised options are available.

Longscale Indicators to read temperature values, usually remotely with RTD or thermocouple sensors supplied by the customer. RTD (Resistance Temperature Detector) indicators measure the change in resistance of the sensor. A 2 or 3 wire system may be used. Thermocouple indicators accept standard millivolt input signals. Cold junction compensation is provided and thermocouple break indication is incorporated.

Watt and Var meters self contained and are available to measure active power and reactive power in both balanced and unbalanced, single and 3 phase 3 or 4 wire systems. These Wattmeters are ideal for clear precise analog indication of power in applications such as power generation, industrial control panels and power distribution.

Phase Angle meters indicate the phase displacement between current and voltage. Used in applications where the phase angle must be monitored, for example with tariffs having VAr penalties, or to optimise generator power delivery. The measuring system comprises a moving coil indicator and a phase angle transducer

Where manual parallelling of two A.C. systems is necessary, the frequency of both systems can be monitored by a Synchroscope. The systems are synchronised when the pointer is stationary in the 12 o’clock position. The instrument is rated for continuous operation and connection, and silicon oil damping is employed.

Specifications :
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Meter Types
DCA, DCV, ACA, ACV and Hz
Power Meters, kW, kVar , PF
Synchroscopes
Phase Angle
Display
Scaling: Customized to any scaling desired, from linear to specialized Cos Ø, square root distributions, with color applications for visual emphasis and to any desired engineering units.
Specific accuracies
Basic Accuracy: ±1.5% of full scale basic accuracy class.
Rectifier Type Meters: ±2% of full scale basic accuracy class.
Expanded Scale Voltmeters: 0.5% of full scale
Frequency Meters: ± .15Hz @45-55Hz and 55-65Hz, ±0.093Hz @ 58-62Hz, ±1.5Hz @350-450Hz
Zero Suppressed Meters: Errors at 20% suppression = ±2% of end-scale
Higher Accuracy: 1% or better of Full scale or better
Position of use: Vertical (position) standardor to specified angle or position
Full scale deflection: 240 °
Movements: Taut Band
The absence of friction resulting from this permits greater sensitivities and provides more rugged meters.Common failures of conventional meters subjected to shock testing are cracked jewels and/or blunted pivots.
Pivot and Jewel
In this design the coil and pointer are supported by polished steel pivots at each end which fit into jewel bearings. Pivot and jewel meters are recommended for high vibration environments because of the mechanism’s inherent stability and strength. Accuracy and repeatability are almost equal to the taut-band’s, and good performance from the pivot and jewel construction is the reason for its long popularity.
Case: Polycarbonate Plastic – metal casing available for special applications that require extra shielding
Cover: Glass window with black polycarbonate bezel
Damping: Eddy current
Overload:
Continuous 120% of rated value
Short-Term:Current Measurement Moving Coil10 x rated value, 5 s With rectifier:2 x rated value, 0.5 s
Short-Term:Voltage Measurement Moving Coil2 x rated value, 5 s With rectifier:2 x rated value, 0.5 s
Overshoot: ≤5% of scale length
Response time: ≤2 s per DIN EN 60061-1
Power Consumption: Ammeters: 0.4 … 0.6 VAVoltmeters: approx. 4.0 VA
General:
Operating Temp.: -25°C to 65°C (-4 to 149°F)Tropicalized or IP54 sealed units available
Storage Temp: -10 to 55°C (14 to 50°F)
Relative Humidity: 95% (non condensing)
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pdf_pic  General Specifcations
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