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 output
• 0–5 AAC / 0–10 AAC / 0–25 AAC /
• 0–50 AAC / 0–75 AAC measuring ranges
• LED display, 14.2 mm character height
• 24 VDC ±10% or 230 V AC/DC ±10% power supply
• 96 × 48 mm panel meter
• IP50 protection from the front

Product description
The DT4261 ... current meter measures and displays the AC current in the range 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 as desired 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 even from a long distance.
An analog output with a signal level of 0–20 mA / 4–20 mA can be ordered as an option, which is galvanically isolated from
the device input and power supply. The type of output signal (0–20 mA / 4–20 mA) can be selected using a front-panel
pushbutton, and the output end value (20 mA) can be assigned to any input current value. The output can be active or
passive, depending on the order.
The device is available with two types of power supply:

• 24 VDC ±10% (DT4261 ...) or 230 VAC/DC ±10% (DT4261 ... PS).

Technical specifications
Safety data: The connection terminals of the inputs, outputs and supply voltage are galvanically isolated from each other. The isolation complies with the requirements of EN 61010-1, taking into account the following:

• Pollution level: 2
• Measurement category: CAT III (measuring input), CATII (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 sec.) 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 sec

Active analog output (opional):

• Output type: active DC current, galvanically isolated
• Output range: 0–20 mA / 0–20 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 (in case of same polarity), 63 mA fuse (in case of reverse polarity)
• Isolation voltage: 500 V

Passive analog output (optional):

• Output type: passive (sink) DC current, galvanically isolated
• Output range: 0–20 mA / 0–20 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
• 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 (-20 – +60 °C optional)
• Storage temperature range: -25 – +70 °C
• Relative humidity: 90% (max., non condensing)
• Place of installation: indoor, instrument cabinet

Electromagnetic compatibility (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 (width × height × depth)
• Panel cutout: 92 × 45 mm (width × height)
• Weight: 0.16 kg
• Electrical connection: screw terminal
• Connecting wire cross-section: 1.5 mm2 (max.)
• Protection: IP50 (front), IP20 (back)

More technical data in the operating instructions. The manufacturer reserves the right to change some technical data!