Simex SRD-99, Руководство пользователя

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User manual - DATA RECORDER SRD-99 and cooperating software
Fig. 4.12. Connections of current signals of 2-wire sensors
(sensor power supply voltage and 4-20 mA signal)
4.3.2. Connections of temperature type inputs ( RTD version )
Fig. 4.13. Terminals description ( RTD version )
The Pt100 / Pt500 / Pt1000 sensor can be connected to the device in typical 3-wire circuit
(
Fig. 4.14 a
) or 2-wire circuit (
Fig. 4.14 b
). Due to precision of measurement 3-wire circuit is
recommended.
If 2-wire circuit is used, the resistance of wires should be as small as possible, to
avoid of measurement errors. Measured value can be corrected (constant
correction) using „
Bias ” parameter from menu „ Input settings ”. Due to low
precision 2-wire connection is not recommended.
17
additional terminals
(internally connected)
22 23 24 25 26
34 35 36 37 38
18 19 20 21
33 28 29 30 31 32 27
15 16 17
GND
external
GND
connection
. . . . .
+
AGND
+
to sensor to sensor
external
sensor
supply
connection
+24V
sensor
supply
output
GND +24V
sensor
supply
output
1 2
22 23 24 25 26
34 35 36 37 38
Power supply
(depending
on version)
18 19 20 21
33 28 29 30 31 32 27
15 16 17
AIN1÷AIN8: Pt100 / Pt500 / Pt1000 type inputs
AIN4 AIN3 AIN2 AIN1
AIN8 AIN7 AIN6 AIN5
6 7 5 4
GND- RS
DATA+
DATA-
n.c.
10 11 12 13 14 9
RS-485
DIN+ DIN-
digital input
ER1 ER2
i