PD2-6100
Large Display Strain Gauge Meter Instruction Manual
13
Signal Connections
Signal connections are made to a six-terminal connector labeled SIGNAL. The EX- (negative excitation)
terminal is used to sense the sensor excitation voltage for ratiometric operation, when the sensor is
powered externally.
Switch Configuration
Setup and programming is performed both through the front panel buttons and switch settings shown below.
The switch configuration must correspond to the setup and programming starting on page 29 (same range,
type, etc.).
Figure 9. Strain Gauge Configuration Switch
Excitation (Switch 1)
The excitation switch
designates whether the meter
will use its internal power
supply or an external power
supply.
Range (Switch 2)
The range switch adjusts the
gain of the internal circuitry.
Narrower ranges require more
amplification.
Polarity (Switch 3)
The polarity switch selects
whether the range is unipolar
and starts at zero (i.e. 0 to 30
mV) or bipolar and starts at a
negative value, or below zero
(i.e. -15 to +15 mV).
Source (Switch 4)
The source switch tells the
ProVu whether the input is a
strain gauge bridge (i.e.
Figure 11), or it is a signal
from a 2 or 4 wire transducer,
or mV source (i.e. Figure 12)
*Ratio should be set to NO in Setup Input Menu
Shunt Resistor (Switch 5)
The PD6100 provides a
means of simulating strain in
a strain gauge bridge circuit
via a 60.4KΩ shunt resistor
included in the meter. This will
simulate an approximate 70%
full-scale load in the case of a
350Ω strain bridge.
3
4
Switch 1
ON
Excitation Internal Excitation
When switch is turned ON, the
ProVu's power supply is used.
OFF Excitation External Excitation
When switch is turned OFF, an
external power supply is used.
Switch 2
ON
Range Higher internal gain Turn this switch ON for the following
input ranges: 15, 30, ±15, or ±25 mV.
OFF Range Lower internal gain
Turn this switch OFF for the following
input ranges: 150, 300, ±150, or ±250
mV.
Switch 3
ON
Polarity
Range starts at
zero (unipolar)
Turn this switch ON for the following
input ranges: 15, 30, 150, or 300.
OFF Polarity
Range starts
below zero
(bipolar)
Turn this switch OFF for the following
input ranges: ±15, ±25, ±150, or ±250 mV.
Switch 4
ON
Source
Source is mV
input transducer
Turn this switch ON if the connected
source is a transducer*
OFF
Source
Source is strain
gauge bridge
Turn this switch OFF if the source is a
strain gauge bridge
Switch 5
ON
Shunt
Shunt resistor is
connected to the
input bridge.
Turn switch ON when you want to
simulate a strain load
OFF Shunt
Shunt resistor is
disconnected
from the input
bridge.
Turn this switch OFF to remove the
shunt resistor
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