Symmetron Stylitis-10, Руководство по установке

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STYLITIS-10 INSTALLATION GUIDE [0516]
19
9. TEMPERATURE PT100: 2-wire,voltage excitation
Platinum sensors (RTD), 100Ω resistance at 0 C: VECTOR T351, etc.
Temperature range: –50 C ~ +55 C.
NOTE: Simplest connection with minimum number of wires. Suitable
for short distances between sensor and data logger. Long wires
must be proportionally thicker.
CONNECTION:
Use a voltage analog input and a voltage output.
Connect the first ΡΤ100 sensor and a 2kΩ / 0.1%, 3ppm resistor, to
screws 7 [+V Pulsed Out], 3 [CH2] and 2 [GND] on the left screw terminal
(see drawing).
Connect the second ΡΤ100 sensor and a 2kΩ / 0.1%, 3ppm resistor, to
screws 7 [+V Pulsed Out], 4 [CH3] και 5 [GND] on the left screw terminal,
etc.
If a PT1000 sensor is used replace the external resistor with a 20 kΩ,
0.1%, 3ppm type. Wire sizes in the following table can then be reduced to
one tenth (1/10) or cables can be up to 10 times longer.
Wire polarity is irrelevant. Wire size according to connection distance
(shielded cables are recommended):
CABLE
LENGTH
meters
WIRE SIZE
mm
2
(PT100)
Up to 1 2x0,35
Up to 2 2x0,50
Up to 3 2x0,75
Up to 4 2x1
Up to 5 2x1,5
Up to 10 2x2,5
Up to 20 2x4
If a shield exists connect it to the
GND screw. Do not connect the
shield to the PT100 sensor.
IN CASE IT DOESN’T WORK:
The data logger should be in ‘ ENERGY SAVE’
mode. Otherwise, the
sensor will heat-up and measure a little higher than correct.
With the sensor disconnected from the logger, use a multimeter to
check the resistance between the sensor’s terminals. At ambient
temperature (23 C) it should be about 110
Ω.
1 2 3 4 5 6 7 8
LEFT SCREW TERMINAL
G
ND
CH2:
A
in
/Di
n/Do
ut
CH3:
A
in
/Di
n/Do
ut
G
ND
CH4:
A
in
/Di
n/Do
ut
+
V
P
u
ls
ed
O
ut
A
UX
CH1: C
in/D
ou
t
P
T
10
0
RT
D
2
k
Ω/
0.
1%
,3
pp
m