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Resistance Transmitter DR 41

Measuring of Resistors with Fixed Setting

The Resistance Transmitter DR 41 converts the sensor resistance value to a standard signal and makes it galvanic isolated available on output.

  • Cost optimized resistance measuring
    in 2-, 3- and 4-wire sensor connection
  • Only 60 mm installation depth, 11.2 mm wide
    Can be installed in economical standard terminal boxes
  • Fixed ranges, easy to use
    Ready to use without any settings or adjustments
  • Zero/Span compensation on front panel
    for readjustment of sensor and measuring equipment or line compensation at 2-wire sensor connection
  • True 3-port separation
    Protection against erroneous measurements due to parasitic voltages or ground loops
  • Protective Separation acc. to EN 61140
    Protects service personnel and downstream devices against impermissibly high voltage
  • Unlimited use with 24 V AC/DC power supply
    Universally applicable for all measurement and industrial applications
  • 5 Years Warranty
    Defects occurring within 5 years from delivery date shall be remedied free of charge at our plant (carriage and insurance paid by sender)

For applications where one measuring range only is used, the Resistance Transmitters DR 41 offers a cost-effective alternative.

A cross-connector for the auxiliary power supply ensures fast and easy installation. The slim housing with 11.2 mm width saves significant space on the DIN-rail. If required a measuring range compensation can be performed at the Zero/Scan potentiometers behind the front cover.

Analog signal processing guarantees precise measured values with short response times and outstanding signal reproduction at the output.

Protective Separation and the 24 V AC/DC power supply make the DR 41 universally applicable for all measurement and industrial applications, as well as for building automation.

Product line

Product line DR 41
Devices Sensor
connection
Order No.    
  2-wire connection
3-wire connection
4-wire connection
DR 41 P - 2
DR 41 P - 3
DR 41 P - 4
X
X
X
X
X
X
Input 0 ... 20 Ohm   2  
  0 ... 50 Ohm   3  
  0 ... 100 Ohm   4  
  0 ... 200 Ohm   5  
  0 ... 500 Ohm   6  
  0 ... 1000 Ohm   7  
  0 ... 2000 Ohm   8  
  0 ... 5000 Ohm   9  
  0 ... 10 kOhm   A  
  0 ... 20 kOhm   B  
  0 ... 50 kOhm   C  
  0 ... 100 kOhm   D  
  0 ... 200 kOhm   E  
  0 ... 500 kOhm   F  
  0 ... 1 MOhm   G  
Output 0 ... 20 mA     2
  4 ... 20 mA     4
  0 ... 5 V     5
  1 ... 5 V     8
  0 ... 10 V     6
  2 ... 10 V     7

Technical Data

Input

Measuring range Fixed ranges within 20 Ohm to 1 MOhm,
see product line
Sensor connection 2-wire, 3-wire, 4-wire sensor connection,
see product line
Sensor wire resistance < 25 Ohm / wire, maximum 5 % of final value at 2-wire connection
Sensor current 0.1 μA to 5 mA, depends on measuring range

Output

Output signal 0 to 20 mA, 0 to 5 V, 0 to 10 V, see product line
4 to 20 mA, 1 to 5 V, 2 to 10 V
Load Current output
Voltage output
≤ 500 Ohm
≥ 2 kOhm
Residual ripple < 10 mVrma

General Data

Transmission error < 0.2 % full scale
Temperature coefficient 1) < 0.025 %/K
Zero/Span compensation ± 5 %
Response time T99 < 2 ms
Test voltage 3 kV AC, 50 Hz, 1 min., input against output against
power supply
Working voltage 2)
(Basic Insulation)
600 V AC/DC for overvoltage category II and pollution
degree 2 acc. to EN 61010-1
Protection against
electrical shock 2)
Protective separation according to EN 61140 by reinforced
insulation in accordance with EN61010-1 up to 300 V AC/DC
for overvoltage category II and pollution degree 2 between
all circuits.
Ambient temperature Operation
Transport and storage
–20 °C to +60 °C   (–4 °F to +140 °F)
–35 °C to +85 °C   (–31 °F to +185 °F)
Power supply 24 V AC/DC, ± 15 % AC: 48 to 62 Hz, approx. 2 VA
DC: approx. 0.7 W
EMC 3) EN 61326 -1
Construction 11.2 mm (0.44") housing, protection class: IP 20
mounting on 35 mm DIN rail acc. to EN 60715
Connection Wire cross-section max. 2.5 mm²
Weight Approx. 50 g
  1. Average TC related to full scale value in specified operating temperature range, reference temperature 23 °C
  2. For applications with high working voltages, ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
  3. Minor deviations possible during interference.

Block diagram

Dimensions

Terminal assignments

  • 1 Input R
  • 2 Input R
  • 3 Input 3-wire
  • 4 Input 4-wire
  • 5 + Output
  • 6 − Output
  • 7 Power supply 24 V AC/DC
  • 8 Power supply 24 V AC/DC

Subject to change!

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