niDMM_ConfigureRTDType
ViStatus = niDMM_ConfigureRTDType(ViSession Instrument_Handle, ViInt32 RTD_Type, ViReal64 RTD_Resistance)
Purpose
Configures the RTD Type and RTD Resistance parameters for an RTD.
Parameters
Input |
Name |
Type |
Description |
Instrument_Handle |
ViSession |
Identifies a particular instrument session. You obtain the Instrument_Handle parameter from niDMM_init or niDMM_InitWithOptions. The default is None.
|
RTD_Type |
ViInt32 |
Specifies the type of RTD used to measure the temperature resistance. NI-DMM uses this value to set the RTD Type property. The default is NIDMM_VAL_TEMP_RTD_PT3851.
Enum |
Standards |
Material |
TCR (α) |
Typical R0 (Ω) |
Callendar-Van Dusen Coefficient |
Notes |
NIDMM_VAL_TEMP_RTD_PT3851 |
IEC-751 DIN 43760 BS 1904 ASTM-E1137 EN-60751 |
Platinum |
.003851 |
100 Ω 1000 Ω |
A = 3.9083 × 10–3 B = –5.775×10–7 C = –4.183×10–12 |
Most common RTDs |
NIDMM_VAL_TEMP_RTD_PT3750 |
Low-cost vendor compliant RTD* |
Platinum |
.003750 |
1000 Ω |
A = 3.81 × 10–3 B = –6.02×10–7 C = –6.0×10–12 |
Low-cost RTD |
NIDMM_VAL_TEMP_RTD_PT3916 |
JISC 1604 |
Platinum |
.003916 |
100 Ω |
A = 3.9739 × 10–3 B = –5.870×10–7 C = –4.4 ×10–12 |
Used in primarily in Japan |
NIDMM_VAL_TEMP_RTD_PT3920 |
US Industrial Standard D-100 American |
Platinum |
.003920 |
100 Ω |
A = 3.9787 × 10–3 B = –5.8686×10–7 C = –4.167 ×10–12 |
Low-cost RTD |
NIDMM_VAL_TEMP_RTD_PT3911 |
US Industrial Standard American |
Platinum |
.003911 |
100 Ω |
A = 3.9692 × 10–3 B = –5.8495×10–7 C = –4.233 ×10–12 |
Low-cost RTD |
NIDMM_VAL_TEMP_RTD_PT3928 |
ITS-90 |
Platinum |
.003928 |
100 Ω |
A = 3.9888 × 10–3 B = –5.915×10–7 C = –3.85 ×10–12 |
The definition of temperature |
*No standard. Check the TCR. |
|
RTD_Resistance |
ViReal64 |
Specifies the RTD resistance in ohms at 0 °C. NI-DMM uses this value to set the RTD Resistance property. The default is 100 (Ω).
|
Return Value
Name |
Type |
Description |
Status |
ViStatus |
Reports the Status of this operation. To obtain a text description of the status code, call
niDMM_error_message. To obtain additional information concerning the error condition, use
niDMM_GetError. |