S+S Regeltechnik THERMASGARD MWTM Notice D'instruction page 7

G
Measuring transducers, calibrateable, with active output
TEMPERATURE RANGES:
When selecting measuring transducer ranges, it is necessary to ensure that the maximum temperatures permissible for sensor ⁄ housing are
not exceeded !
Ambient temperature for measuring transducers: – 30 ...+ 70 °C
Apparent ohmic resistance = see load resistance diagram
Load resistance diagram
800
700
600
500
400
300
250
200
50
10
Operating voltage (V DC)
SUPPLY VOLTAGE :
For operating voltage reverse polarity protection, a one-way rectifier or re-
verse 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!
ACCESSORIES
MF-06-K
MF-06-M
KRD-04
MK-05-M
Load resistance diagram
Admissible
range
15 20 25 30 35 36 40
Mounting flange, plastic (included in the scope of delivery)
Mounting flange, metal (Galvanised steel), Ø 35 mm
Capillary tube gland bracket, plastic
Mounting clamps, galvanised steel (6 pieces)
(from 3 m rod length, included in the scope of delivery)
Dependency of output voltage on output current
4 ... 20 mA
Connecting scheme
Power supply
AC 24V~
DC 15-36V = GND
Connecting scheme
Power supply
AC 24V~
DC 15-36V = GND
12
Ua (V)
10
8
6
4
2
0
0 0.5 1.0 1.5 2.0 2.5
Circuitry
0V
Circuitry
0V
7100- 0030- 1000-000
7100- 0030-5000- 000
7100- 0030- 7000-000
7100- 0034- 0000- 000
Ia (mA)
3.0 3.5 4.0 4.5
Individual operation
V
Parallel operation
Circuitry