G
Measuring transducers, calibrateable, with active output
Load resistance diagram
4 … 20 mA
Dependency of output voltage on output current
Output:
...........................
4...20 mA
Connection: ......................2-wire connection
Auxiliary energy: ..............15 ... 36 V DC ± 10 %,
supplied from 4...20 mA loop,
residual ripple, stabilised ≤ ± 0.3 V
Working resistance:..........Ra (Ohm) = (Ub-14 V) ⁄ 0.02 A
Output:
...........................
0 - 10 V
Connection: ......................3-wire connection
Auxiliary energy: ..............24 V AC ⁄ DC ± 20 %
Working resistance:..........minimum load resistance 5 kOhm
Accuracy: ........................± 0.4 K at 25 °C, otherwise ± 0.8 K
Measuring element: ..........see table
Operating temperature: ....transmitter – 30...+ 70 °C
Linearisation: ...................temperature linear
according to DIN IEC 751
Linearity error: ................± 0.3 % of measuring range
Standards: .......................CE conformity, electromagnetic compatibility
according to EN 61326: 2006,
according to EMC directive 2004 ⁄ 108 ⁄ EC
TEMPERATURE RANGES:
When selecting measuring transducer ranges,
it is necessary to ensure that the maximum temperatures
permissible for sensor ⁄ enclosure are not exceeded !
Ambient temperature for measuring transducers:
– 30 ...+ 70 °C
Apparent ohmic resistance = see load resistance diagram
Ia
(mA)
12
10
8
6
4
2
0
0
1.5
0.5
2.5
3.5
4.5
1.0
2.0
3.0
4.0
Ua
(V)
800
700
600
500
400
300
250
50
200
10
15
20
25
30 35 36 40
Load resistance diagram
W
orking r
esis
tanc
e (Ohm)
Operating voltage (V DC)
Admissible
range
Connecting scheme
Parallel operation
Connecting scheme
Individual operation
SUPPLY VOLTAGE :
For operating voltage reverse polarity protection, a one-way rectifier or
reverse polarity protection diode is integrated in this device variant.
This internal one-way rectifier also allows operating 0 - 10 V devices on AC
supply voltage.
The output signal is to be tapped by a measuring instrument. Output
voltage is measured her against zero potential (O V) of the input voltage!
When this device is operated on
DC supply voltage
, the operating voltage
input UB+ is to be used for 15...36 V DC supply and UB – or GND for ground
wire!
When several devices are supplied by one 24 V
AC voltage supply
, it is to
be ensured that all ”positive“ operating voltage input terminals (+) of the
field devices are connected with each other and all ”negative“ operating
voltage input terminals (–) (= reference potential) are connected together
(in-phase connection of field devices). All outputs of field devices must be
referenced to the same potential!
In case of reversed polarity at one field device, a supply voltage short-
circuit would be caused by that device. The consequential short-circuit
current flowing through this field device may cause damage to it.
Therefore, pay attention to correct wiring!
Circuitry
Circuitry
0...10V
0V/GND
0...10V
0V/GND
Power supply
AC 24V~
0V
DC 15-36V = GND
Circuitry
0...10V
0V/GND
V
Power supply
AC 24V~
0V
DC 15-36V = GND
