Technical Data
8
GA09420_002_C0 – (2016-10) –
Leybold
Power supply
DANGER
The transmitter must only be connected to power supplies, instru-
ments or control devices that conform to the requirements of a
grounded extra-low voltage (PELV). The connection to the transmitter
has to be fused (Leybold controllers fulfill these requirements).
Operating voltage at the
IONIVAC ITR 90
+24 VDC (20 … 28 VDC)
1)
ripple max. 2 V
pp
Power consumption
Standard
Degas
Emission start (<200 ms)
≤
0.5 A
≤
0.8 A
≤
1.4 A
Power consumption
ITR 90
ITR 90 P
≤
16 W
≤
18 W
Fuse necessary
1.25 AT
Sensor cable
For reasons of compatibility, the expression "sensor cable" is used for all
ITR 90 versions in this document, although the pressure reading of the
transmitters with fieldbus interface (ITR 90 P) is normally transmitted via
the corresponding bus.
Electrical connector
ITR 90
ITR 90 P
D-Sub,15-pin, male (
→
19)
D-Sub,15-pin, male (
→
20)
Cable for ITR 90
Analog values only
Without degas function
Analog values
With degas function
Analog values
With degas function
And RS232C interface
Cable for ITR 90 P
4 conductors plus shielding
5 conductors plus shielding
7 conductors plus shielding
depending on the functions used,
max. 15 conductors plus shielding
Max. cable length (supply voltage 24 V
1)
)
Analog operation
RS232C operation
≤
35 m, conductor cross-section 0.25 mm²
≤
50 m, conductor cross-section 0.34 mm²
≤
100 m, conductor cross-section 1.0 mm²
≤
30 m
Transmitter identification
42 k
Ω
resistor between Pin 10 (sensor
cable) and GND
1)
Measured at sensor cable connector (consider the voltage drop as function of
the sensor cable length).
