PLATINUM
TM
Series Controllers User
’s
Guide
M5451
Omega Engineering | www.omega.com
28
Reference Section: Initialization Mode (INIt)
6.1.2
Resistance Temperature Detector (RTD) Input Type (INIt > INPt >
Rtd)
Select
Rtd
as
the input type. Factory default configuration settings are three-wire, 100
Ω
,
using the European standard 385 curve. Note that the 392 and 3916 curves are only available
for 100
Ω
RTDs. If
Rtd
is selected and a specific configuration is not changed, the last saved
configuration will be used.
Navigate to the desired configuration parameter:
N.wIR
–
Firmware selection of the number of wires for RTD connection (no jumpers
needed)
A.CRV
–
Calibration curve covering both the international standard and the
resistance of the RTD
Select the option.
6.1.2.1
Number of RTD Wires (INIt > INPt > Rtd >
N.wIR)
Navigate to the desired setting. Settings include the following:
3 wI
–
Three-wire RTD (factory default)
4 wI
–
Four-wire RTD
2 wI
–
Two-wire RTD
Select the indicated option.
6.1.2.2
Calibration Curve (INIt > INPt > Rtd > A.CRV)
Navigate to the desired setting. Settings include the following:
385.1
–
European and most common standard at the conventional
resistance of 100
Ω
(factory default)
385.5
–
European curve for 500
Ω
385.t
–
European curve for 1000
Ω
392
–
Old US standard (rarely used), at 100
Ω
only
3916
–
Japanese standard, at 100
Ω
only
Select the indicated option.
6.1.3
Thermistor Input Type Configuration (INIt > INPt > tHRM)
Select Thermistor (
tHRM
) as the input type. This sets up the unit for thermistor-based
temperature measurement and then the specific thermistor type can be specified. If no
thermistor type is specified, the last selected type is used.
Navigate to the correct setting. Settings include the following:
2.25k
–
2,250
Ω
thermistor (factory default)
5k
–
5,000
Ω
thermistor
10k
–
10,000
Ω
thermistor
Select the indicated option.
