Model AA14-4F010
4 Channel Thermocouple Conditioner
4 Channel Thermocouple Conditioner
| Input Type | Description | SPS6000 | SPS8000 | System 10 |
| Temperature |
Thermocouple Conditioner |
X X |
XX |
XX |
A member of Daytronic's new family of enhanced "AA" conditioner cards, the Model AA14-4F010 may be used in any standard
System 10, SPS6000, or
SPS8000 Mainframe. This high-isolation, four-channel conditioner accepts real-world temperature signals from Types E, J, K, N, R, S, and T Thermocouples, producing accurately linearized output over the full TC ranges. While all four channels of a given AA14-4F010 card must be dedicated to the same TC type, individual cards dedicated to different TC types may be mixed as desired within the total data acquisition system.The Model AA14-4F010 offers
- true galvanic isolation with pulse-width modulation, allowing sensor-to-chassis or sensor-to-sensor common-mode voltages as high as 1500 V (rms) to be accommodated
- linear output over wide TC ranges without the need for additional output processing; based on NIST polynomials, linearization is performed throughout each thermocouple’s stated operating range, and within the rated accuracy limits
- internal reference-junction compensation automatically selected by thermocouple choice; no external cold junction is required- although the user may supply his own Controlled Ambient Temperature Zone for reference-junction purposes, if desired
- isothermal connector assembly with screw terminals for direct connection of TC leads, and with a precision thermistor for measurement of the reference-junction temperature; the same connector may be used with any TC type
- TC break detection: In the event of a broken thermocouple wire or other "open TC" condition, the AA14-4F010 will automatically report an indeterminate off-scale reading for the TC channel in question, with positive or negative polarity selectable on a per-channel basis.
A simple "calculated" calibration procedure lets you quickly set up each TC-based data channel by entering appropriate "type" and scaling information. During operation, appropriate reference-junction compensation, real-time digital linearization, and engineering-unit scaling are automatically applied for each type of thermocouple used. A second, two-point "zero and span" calibration technique is provided, however, for applications where it is desirable to force multiple TC readings to the same exactly known temperature (In heat balance applications, for example, it is useful to be able to zero all readings simultaneously.).
- Number of Input Channels: Four
- Thermocouple Types and Ranges: See table; automatically selected- on an individual channel basis- when the channel is configured; linear output depends on the thermocouple type, as shown in the table
TC Type
Range
Typical Daytronic
System Display
Resolution*
Linear Output
(mV/degree)**
E
E
J
J
K
K
N
N
R
R
S
S
T
T
-200°C to +1000°C
-328°F to +1832°F
-200°C to +1200°C
-328°F to +2192°F
-200°C to +1372°C
-328°F to +2501.6°F
-180°C to +1300°C
-292°F to +2372°F
-50°C to +1768°C
-58°F to +3214.4°F
-50°C to +1768°C
-58°F to +3214.4°F
-200°C to +400°C
-328°F to +752°F
0.1°C
0.1°F
0.1°C
0.1°F
0.1°C
0.1°F
0.1°C
0.1°F
0.1°C
0.1°F
0.1°C
0.1°F
0.1°C
0.1°F
5.0000
2.7778
4.0000
2.2222
4.0000
2.2222
4.0000
2.2222
2.0000
1.1111
2.0000
1.1111
5.0000
2.7778
-
*For certain restricted ranges in Daytronic systems, a display resolution of 0.01°C or F may be achieved.
**See "Auxiliary Outputs" under Specifications.
- Amplifier (per channel):
-
Normal-Mode Range: ±80 mV operating; ±240 V without instrument damage or loss of calibration
Common-Mode Range: 1500 V (rms) operating and without instrument damage
Common-Mode Rejection Ratio: DC and at 60 Hz: -130 dB
Input Impedance: Differential: 10 M-ohm; Common-Mode: 470 pF to earth
Offset: Initial: ±10 µV; vs. Temperature: ±0.2 µV/°C; vs. Time: ±0.5 µV/month
Gain Accuracy: ±0.05% 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 195 Hz
-
Step-Response Settling Time (Full-Scale Output):
To 1% of final value: 70 msec
To 0.1% of final value: 85 msec
To 0.02% of final value: 95 msec
- Auxiliary Outputs: Nominal ±5 V-DC signals available on mainframe wire-wrap pins (System 10 or SPS8000) or as input to an Analog Signal Processor Card (SPS6000); jumper-selectable to represent either the filtered or prefiltered value of the channel
- Power-Supply Slot Allotment: Maximum consumption of supply current from the Conditioner Card Slot is 95 mA
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For complete Pricing and Ordering Information, write us or call Daytronic at 1-800-668-4745 |