Half-Bridge Version - Omega LDX-4 User Manual

5.3: Transducer Sensitivity and the X2, X4, DIV2 Link
Transducer Full Range Output
In general, transducer sensitivity is quoted as mV/V/mm
Where:
To get the transducer Full Range Output, multiply all three together.
Example:
Set the X2, X4, DIV2 link as shown in the table below.
Transducer Full Range Output
400 mV FR to 2500 mV FR
2500 mV FR to 5000 mV FR
150 mV FR to 400 mV FR
55 mV FR to 150 mV FR
6.0: Half-Bridge only Variant
This is a half-bridge optimized variant of the standard product. The excitation fre-
quency is higher (see specification) and the transducer input connector is wired to
accept half-bridge transducers with standard connections.
6.1: Connecting the transducer
The 5-pin DIN plug is screwed into the case mounted socket. Transducers not fitted
with a plug should be wired to the plug supplied. LVDT transducers cannot be con-
nected to this input.
Standard Half-Bridge Gauging Probe Plug Connections
Half-Bridge
Case
Note 1: + indicates inward movement of the tip.
Note 2: The transducer body may be disconnected from the cable screen by
cutting the black wire inside the connector
mV is the output of the transducer
V is the primary voltage
mm is the mechanical position of the transducer from null
(usually mid mechanical range).
GP911-1 sensitivity is 210 mV/V/mm
GP911-1 range is ±1 mm
LDX-4 primary voltage 3 V
Transducer Full Range Output = 210 x 3 x 1 = 630 mV (0.63 V)
Black
Cable Screen
Blue
+
Yellow
-
Red
Input Gain Link Setting
Standard Range - Link Parked on X2
High Transducer Output - Link ON DIV2
Low Transducer Output - Link ON X2
Very Low Transducer Output - Link ON X4
Case
4
5
3
2
1
Plug view
into pins