Crystal nVision Reference Recorder - RTD100 Module Instructions

Page 20 • Crystal Engineering Corporation
Voltage.Mode
The nVision may be used to measure voltages up to
28VDC. Select the Voltage mode through the Setup
menu to properly congure the nVision prior to con-
nection and use. The illustration denotes the proper
Voltage connection scheme to the MA20 module.
Switch.Test.Mode
The nVision may be used to detect switch closures.
Select the Switch Test mode through the Setup menu
to properly congure the nVision prior to connection
and use. The illustration denotes the proper Switch Test
connection scheme to the MA20 module.
Temperature.(RTD100).Module.Instructions
Your nVision has the ability to measure temperature very accurately if populated with an
RTD100 module. With this system you may connect your platinum resistance thermometer to
the nVision using the provided IP67 rated connector system (P/N: 3953). Once the sensing ele-
ment is connected, you may display the temperature reading in your desired unit. The nVision
can also measure electrical resistance (Ω) to help in troubleshooting your resistance based sens-
ing element.
Temperature.Coefcient.of.Resistance.(TCR)
Your nVision comes pre-loaded with several common RTD sensing element TCR values with the
appropriate Callendar-Van Dusen Coecients to convert your resistance measurement to the
appropriate temperature measurement. The available 100Ω platinum RTD TCRs are:
• Pt100 (385) Euro
• Pt100 (3911) US
• Pt100 (3926)
Simply select the desired TCR or coecient values in
CrystalControl for use on the nVision. You may also view the Summary page
to conrm you have selected the correct setting for your sensing element..