Omega Vehicle Security CN3271 Series manual - page 7

4
8
RTD
10
9 8
RTD
10
9
RTD INPUTRTD INPUT
RTD INPUTRTD INPUT
RTD INPUT
Fig. 5 RTD INPUT WIRING
NOTENOTE
NOTENOTE
NOTE:
1) Don’t run input wires together with power
cables.
2) Pay attention to the line resistance; a high line
resistance may cause measurement errors.
3) When shielded cable is used, it should be
grounded at one side only to avoid ground loop
currents.
4) The resistance of the 3 wires must be the
same.
LINEAR INPUTLINEAR INPUT
LINEAR INPUTLINEAR INPUT
LINEAR INPUT
Fig. 6 mA, mV AND V INPUTS WIRING
NOTENOTE
NOTENOTE
NOTE:
1) Don’t run input wires together with power
cables.
2) Pay attention to the line resistance; a high line
resistance may cause measurement errors.
3) When shielded cable is used, it should be
grounded at one side only to avoid ground loop
currents.
4) The input impedance is equal to:
Less than 5 Ω for 20 mAdc input
Greater than 1 MΩ for 60 mVdc input
Greater than 400 KΩ for 5 Vdc and 10 Vdc
input
Shield
_
+mA,
mV
or
V
9
+
_
G
mA
mV
or
V
10
9
10
LHL-1-NEUTRO.pmd 19/04/2004, 15.074