Model 10A18-4C
Quad 100-Ohm Platinum Linear RTD Conditioner
Quad 100-Ohm Platinum Linear RTD Conditioner
| Input Type | Description | SPS6000 | SPS8000 | System 10 |
| Temperature |
Quad 100-ohm Platinum Linear RTD |
X X |
XX |
XX |
This conditioner is similar to the Model 10A16-4C, but offers an output voltage that is linearly related to actual temperature instead of resistance. Intended for use with 100-ohm platinum RTD’s (only), it has higher available bandwidth than the 10A16-4C, and can operate in all Daytronic system platforms.Thus, the 10A18-4C accepts up to four independent inputs from 100-ohm platinum RTD’s of either DIN (European) or American design (For the 10A18-4C, "American" standard conforms to NIST "Reference Function."). It produces linear temperature outputs suitable for use in System 10, SPS6000, and SPS8000- with selectable accuracy (depending on the operating measurement range for either DIN Standard or American Standard) of up to ±0.2° C. Since the conditioner card provides its own per-channel temperature curve fitting, no further system-level linearization is required.
As with the Model 10A16-4C, RTD inputs are normally set for four-wire cabling, with 1-mA constant-current excitation, to yield the highest accuracy. However, for an RTD channel with shared current return and sense signals, three-wire mode is available, if desired, via an internal jumper setting.Calibration of the 10A18-4C may be
- "absolute" for RTD's of both DIN and American standard, in System 10 or SPS8000;
- "calculated," via Configurator software, in SPS6000; or
- "two-point" (i.e., "zero and span"), in all systems, when independently and accurately known temperature references are available- preferably the high and low extremes to which the sensor will be subjected.
- RTD Types: Platinum; DIN (European) or American standard with "ice-point" resistance of 100 ohm(only)
- Linear Range and Accuracy: -200.0° C to +600.0° C full-scale for each RTD standard (DIN and American); accuracy of linearization will depend on the selected RTD standard and the selected operating range (full- or partial-scale), regardless of the system (see Fig. 8); automatically selected- on an individual channel basis- when the channel is configured*
- Excitation (per channel): Nominal 1 mA
- Amplifier (per channel): Low-drift, linearized by current feedback
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Normal-Mode Range: ±350 mV operating; ±5 V without instrument damage
Common-Mode Range (expressed as lead-wire resistance rejection, 100 ohm maximum): 0.004%/ohm(4-wire)
Input Impedance (Differential): Greater than 10 M-ohm
Offset: Initial: ±5 µV; vs. Temperature: ±0.2 µV/°C; vs. Time: ±1 µV/month
Gain Accuracy: ±0.02% of full scale
Gain Stability: vs. Temperature: ±25 ppm/°C; vs. Time: ±20 ppm/month - Filter (per channel): 3-pole modified Butterworth; 3 dB down at 10 Hz; 60 dB down at 190 Hz
- Step-Response Settling Time (Full-Scale Output):
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To 1% of final value: 65 msec
To 0.1% of final value: 85 msec
To 0.02% of final value: 100 msec
- Outputs: 10 mV/°C
- Auxiliary Outputs: Filtered outputs available on wire-wrap pins
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* With proper calibration, each operating range can be expressed, if desired, in degrees Fahrenheit. Note also that, while measurement accuracy is independent of the system using the 10A18-4C card, final measurement resolution will, in general, depend on the system. In SPS6000, the resolution is limited only by signal noise; in System 10 and SPS8000, it is limited by the readout to a maximum resolution of approximately one part in 30,000 (e.g., ±0.01° C for measurements up to 300° C). (Back to Specifications)
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For complete Pricing and Ordering Information, write us or call Daytronic at 1-800-668-4745 |