HBM SD01A Bedienungsanleitung Seite 17

SD01A
4. Permitted connector cables between the Zener barriers and the load cells.
These must not exceed defined limit values for capacitance and
inductance. The limit values are specified in table 5.1.
Group
IIC
IIB
IIA
Tab 5.1: Limit values for cable capacitance and cable inductance in the case of
load cells according to (3a) and max. 12m integral cable at the load cell
Group
IIC
IIB
IIA
Tab 5.2: Limit values for cable capacitance and cable inductance in the case of
load cells according to (3b) and max. 6m integral cable at the load cell
Group
IIC
IIB
IIA
Tab 5.3: Limit values for cable capacitance and cable inductance in the case of
load cells according to (3c) and max. 35m integral cable at the load cell
When using the HBM extension cable KAB8/00−2/2/2 blue the following
characteristic values must be taken into consideration:
Loop resistance
Greatest loop inductance
Capacitance wire / wire
Capacitance wire / shield
Tab 5.4: Characteristic values of the HBM cable KAB8/00−2/2/2
With load cells
Tested to PTB01ATEX2208
Tested to PTB01ATEX2209
Tested to PTB01ATEX2211
Tab 5.5: Maximum permissible extension for SD01A
A1045−2.4 en/de/fr
Capacitance (nF)
326
2000
8380
Capacitance (nF)
334
2008
8388
Capacitance (nF)
262
1936
8316
all
Inductance (mH)
176
1476
2976
Inductance (mH)
188
1488
2988
Inductance (mH)
100
1400
2900
282 Ohm/km
0.4 mH/km
75 nF/km
130 nF/km
Gas group
IIC
IIC
IIC
IIB, IIA
17
L/R (mH/Ohm)
58
235
472
L/R (mH/Ohm)
58
235
472
L/R (mH/Ohm)
58
235
472
Cable length
300 m
300 m
100 m
500 m
HBM