Manual
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2.2.6 Push the Up and Down soft keys to move the cursor to the desired RTD / alpha coefficient combination. 
Press the Select soft key to accept the selection and continue. 
Helpful Hint: To move page by page, press the 
Function key to change the soft key row to “Up 
Down PgUp PgDn
.” Subsequent press of the Up or Down key will return the Select and Back 
soft key options to the display. 
2.2.7  After selecting the RTD Type, the RIO Setup screen will appear as shown below. Use the 
Up and Down 
soft keys to move the cursor to the desired setting or function and press Select. 
Choose New Probe: returns to RIO User Select screen 
Display: set display for: 
Degrees or Ω (1 Line) 
Degrees and Ω (2 Lines) 
Simulate Mode:
 Simulation setup screen, see below  
Measure Mode: Returns to Measure Mode 
Selected Probe: shows current RTD Type selection 
2.2.8  To display a temperature reading the user can also press the 
Back soft key or press Measure Mode 
key. 
3.0   Rcal – Field Recalibration 
The RIO4000 module can be recalibrated / re-certified using appropriate local standards and the MFT’s Rcal 
feature. Two recalibration methods are available.  See the FIELD RECALIBRATION Section of this MFT 
Operator Instruction Manual for general information on the Rcal feature and initial setup. Once pertinent 
parameters and options have been entered, move cursor arrow to the Start option on the main Rcal menu and 
press the Select soft key. This initiates the recalibration type selection display shown below.
 RIO Setup   
 Settings & Functions 
 Choose New Probe 
 Display: Degrees or 
Ω 
 Simulate Mode 
 Measure Mode 
 Selected Probe: 
 M->Pt 100 (385)
Up Down Select Back 
Field Recal 
Field Recal Setup: 
 Start 
 Module Bay: 1 
 Units: C 
 Points: 3 
 Restore Defaults 
Up Down Select Back 
Rcal Feature Main Setup Menu 
Field Recal 
Enter Type of Cal: 
 Module Only 
 Module + Probe 
Up Down Start Back 
Calibration Type Selection Menu 










