HP E1419A User Manual page 280

Chapter 6
Current Source setting that must be used for the following RTDs and Thermistors:
Required Current
Amplitude
MAX (488µA)
MIN (30µA)
•
The <range> parameter: The HP E1419 has five ranges: .0625VDC, .25VDC,
1VDC, 4VDC, and 16VDC. To select a range, simply specify the range value (for
example, 4 selects the 4VDC range). If you specify a value larger than one of the
first four ranges, the HP E1419 selects the next higher range (for example, 4.1
selects the 16VDC range). Specifying a value larger than 16 generates an error.
Specifying 0 selects the lowest range (.0625VDC). Specifying AUTO selects auto
range. The default range (no range parameter specified) is auto range.
•
If you are using amplifier SCPs, you should set them first and keep their settings
in mind when specifying a range setting. For instance, if your expected signal
voltage is to be approximately .1VDC and the amplifier SCP for that channel has
a gain of 8, you must set <range> no lower than 1VDC or an input out-of-range
condition will exist.
•
The sub_type parameter: values of 85 and 92 differentiate between 100 Ohm (@
0°C) RTDs with temperature coefficients of 0.00385 and and 0.00392
Ohm/Ohm/°C respectively. The sub_type values of 2250, 5000, and 10000 refer to
thermistors that match the Omega 44000 series temperature response curve. These
44000 series thermistors are selected to match the curve within 0.1 or 0.2°C. For
thermistors sub_type may be specified in Kohms (kohm).
The sub_type EEXTended applies to E type thermocouples at 800°C and above.
CUSTom is pre-defined as Type K, with no reference junction compensation
(reference junction assumed to be at 0 °C).
•
The *CAL? command calibrates temperature channels based on Current Source
SCP and Sense Amplifier SCP setup at the time of execution. If SCP settings are
changed, those channels are no longer calibrated. *CAL? must be executed again.
•
See "Linking Input Channels to EU Conversion" on page 3-59 for more
information.
•
When Accepted: Not while INITiated
•
Related Commands: *CAL?, OUTP:CURR (for RTDs and Thermistors),
SENS:REF, and SENS:REF:TEMP (for Thermocouples)
•
*RST Condition: SENSE:FUNC:VOLT AUTO,(@100:163)
Temperature Sensor Types and
Subtypes
for RTD and THER,2250
for THER,5000 and THER,10000
HP E1419 Command Reference 279
[SENSe]