AC ammeter DT4261

digitalpanel-mountedfor control cabinets

Product features

• 3 functions in one device:
  – current transformer
  – current display
  – 0–20 mA / 4–20 mA galvanically isolated analog output (optional)
• Measuring ranges: 0–5 AAC / 0–10 AAC / 0–25 AAC / 0–50 AAC / 0–75 AAC
• LED display, 14.2 mm character height
• Power supply: 24 VDC ±10% or 230 V AC/DC ±10% (PS version)
• 96 × 48 mm panel meter
• IP50 protection from the front

Product description
The DT4261 current meter measures and displays AC current in the ranges 0–5 AAC / 0–10 AAC / 0–25 AAC / 0–50 AAC / 0–75 AAC connected to its input. The measuring range can be expanded with an external current transformer with a ratio of x/5. The displayed value is proportional to the true effective value (TRMS) of the input signal. The device displays the measured value on a 4-digit, 14.2 mm high LED display that is easy to read from a distance. An analog output (0–20 mA / 4–20 mA) is optional, galvanically isolated from input and power supply. The output signal type and scaling are selectable using a front-panel pushbutton; the 20 mA end value can be assigned to any input current value. The output can be ordered active or passive. The device is available with two power supply options: 24 VDC ±10% (DT4261 …) or 230 VAC/DC ±10% (DT4261 … PS).

Caractéristiques / spécifications techniques

• Safety data: Connection terminals of inputs, outputs and supply are galvanically isolated from each other; isolation complies with EN 61010-1
• Pollution level: 2
• Measurement category: CAT III (measuring input), CAT II (power supply input)
• Input parameters: Input signal: AC current
• Measuring ranges: 0–5 AAC / 0–10 AAC / 0–25 AAC / 0–50 AAC / 0–75 AAC
• Continuous overcurrent capability: measuring range × 2
• Short-term (1 s) overcurrent capability: measuring range × 20
• Input consumption: 0.25 VA (max.)
• Measuring parameters: Conversion characteristic: TRMS value
• Frequency range: 40–70 Hz
• Error (23 °C ±2 °C, 50 Hz): 0.2% (max.)
• Measuring time: 0.5 s
• Temperature dependence: 25 ppm / °C (max.)
• Display parameters: Display range: 4 digit + decimal point; Display type: 7 segment LED; Display colour: red; Character height: 14.2 mm; Display refresh time: 0.5 s
• Active analog output (optional): Output type: active DC current, galvanically isolated; Output range: 0–20 mA / 4–20 mA, selectable and scalable with front-panel push button; Characteristic: linear; Error: 0.1% (max.); Temperature dependence: 25 ppm / °C (max.); Settling time: 70 ms; Termination resistance: 600 ohm (max.); Current limit: 20.5 mA; Protection against external voltage: 75 V (same polarity) / 63 mA fuse (reverse polarity); Isolation voltage: 500 V
• Passive analog output (optional): Output type: passive (sink) DC current, galvanically isolated; Output range: 0–20 mA / 4–20 mA, selectable and scalable; Characteristic: linear; Error: 0.1% (max.); Temperature dependence: 25 ppm / °C (max.); Settling time: 70 ms; External supply voltage: 4–30 V; Current limit: 20.5 mA; Protection against external voltage: <75 V; Maximum series resistance value: R = (U – 4 V) / 0.02 A [ohm]; Minimum series resistance value: U < 20 V: not required; U > 20 V: R = (U – 20 V) / 0.02 A [ohm]; Isolation voltage: 500 V
• Power supply: Supply voltage / consumption: 24 VDC ±10% 3 W / 2.8 VA (DT4261); 230 V AC/DC ±10% 3.5 VA / 3 W (DT4261 PS)
• Ambient conditions: Operating temperature range: 0 – +60 °C (optional -20 – +60 °C); Storage temperature range: -25 – +70 °C; Relative humidity: 90% (max., non condensing); Place of installation: indoor, instrument cabinet
• EMC: According to EN 61326-1; Interference immunity: industrial environment; Interference emission: Group 1, Class B
• General data: Design: panel meter; Dimensions: 110 × 48 × 84 mm (W × H × D); Panel cutout: 92 × 45 mm (W × H); Weight: 0.16 kg; Electrical connection: screw terminal; Connecting wire cross-section: 1.5 mm² (max.); Protection: IP50 (front), IP20 (back)
• More technical data available in the operating instructions; the manufacturer reserves the right to change some technical data