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2914
 
 

2914

 

2-wire room temperature transmitter

 

  • Room temperature measurement
  • Complete with sensor and transmitter
  • 4...20 mA output in 2-wire connection
  • Easy mounting
  • Measurement range 0...70°C
  • Supply 8...35 VDC
  1. Overview +

  2. Technical details +

  3. Accessories +


Application

  • Electronic temperature measurement in for instance control rooms, offices, heating plants, factories, living rooms, and similar dry rooms.
  • Suitable as a transmitter for controllers, trip amplifiers, displays, or superior SCADA systems.

Technical characteristics

  • A precision Pt100 sensor with a small mass is mounted on the transmitter input thereby achieving a fast response time.
  • The 2-wire output signal of 4...20 mA is proportional and linear to the temperature value that influences the built-in sensor.
  • A reversed output signal of 20...4 mA may be ordered.
  • A number of different sensor error detection options may be ordered.
  • Protected against polarity reversal.
  • The bottom of the cabinet can be attached to a wall by two screws.
  • Visible or hidden cable access.

Environmental Conditions

  • Operating temperature

    0°C to +70°C

  • Calibration temperature

    20...28°C

  • Relative humidity

    < 95% RH (non-cond.)

  • Protection degree

    IP30

Mechanical specifications

  • Dimensions (HxWxD)

    70 x 121 x 25 mm

  • Weight approx.

    95 g

  • Wire size

    1 x 1.5 mm

Common specifications

  • Supply

  • Supply voltage

    8.0...35 VDC

  • Internal power dissipation

    25 mW…0.8 W

  • Response time

  • Response time

    10 s (@ 0.5 m/s)

  • Voltage drop

    8.0 VDC

  • Warm-up time

    5 min.

  • Signal / noise ratio

    Min. 60 dB

  • Accuracy

    Better than 0.3°C

  • Signal dynamics, input

    17 bit

  • Signal dynamics, output

    16 bit

  • Effect of supply voltage change

    < 0.005% of span / VDC

  • Temperature coefficient

    < ±0.01% of span / °C

  • Linearity error

    < 0.1% of span

  • EMC immunity influence

    < ±0.5%

Input specifications

  • Common input specifications

  • Max. offset

    50% of max.°C

  • RTD input

  • Sensor current

    > 0.2 mA, < 0.4 mA

  • Measurement range

    0...70°C

  • Min. measurement range

    25°C (span)

Output specifications

  • Current output

  • Signal range

    4…20 mA

  • Min. signal range

    16 mA

  • Load (@ current output)

    ≤ (Vsupply - 8) / 0.023 [Ω]

  • Load stability

    ≤ 0.01% of span / 100 Ω

  • NAMUR NE43 Upscale/Downscale

    23 mA / 3.5 mA

  • Common output specifications

  • Updating time

    135 ms

  • of span

    = of the presently selected range

Observed authority requirements

  • EMC

    2014/30/EU

  • EAC

    TR-CU 020/2011

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