Lord MicroStrain V-Link-LXRS Technical Note

LORD TECHNICAL NOTE
®
V-Link -LXRS
Using Pressure Transducers
Overview
The LORD MicroStrain
transducers on channels 1, 2, 3 and 4 and the
support pressure transducers on channel 1. This technical note explains use of a typical pressure transducer with SG-
® ®
Link -LXRS and Node Commander
Pressure Transducer
For our example, we are using a
designed to give accurate level measurement in up to 1,200 feet of water, and is used for both general water
applications and corrosive applications.
Wiring
Refer to the Model 817
Start Guide (frame 2C) to connect the sensor to the node.
Model 817 Pressure Transducer
Lead color
Red + Power
Black + Signal
Green - Power
White - Signal
Shield GND
Step 1

Locate the specific calibration sheet provided by the pressure transducer
manufacturer and any other documents as necessary to determine the
following parameters:
o
Calibration Voltage
o
Full Scale Reading
o
Measurement Range

We find the Calibration Voltage embossed on the barrel of the
transducer (10 V).

We find the Full Scale Reading (86.073 mV) on the calibration
document, as shown in Figure 2.

We find the Measurement Range embossed on the barrel of the
transducer (20 feet).
1
®
and SG-Link
® ® ®
V-Link -LXRS Wireless 7 Channel Analog Input Sensor Node will support pressure
®
software; the V-Link
Viatran Model 817 pressure
Installation Data Manual
Lead use Pin number
1
2
4
3
4
Table 1: Wiring
® ®
SG-Link -LXRS Wireless 2 Channel Analog Input Sensor Node will
® ®
-LXRS mirrors the instruction.
transducer. The Model 817 is a submersible instrument
(page 4) and the SG-Link
SG-Link-LXRS
Pin nomenclature
VXC
S+
GND
S-
GND
®
-LXRS
® ®
-LXRS Quick
Figure 1: Model 817
Pressure Transducers
Figure 2: Calibration Document
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