Model 10A9-8C
Eight-Channel Thermocouple Conditioner
Eight-Channel Thermocouple Conditioner
| Input Type | Description | SPS6000 | SPS8000 | System 10 |
| Temperature |
8-Chn Thermocouple |
X-X |
X X |
XX |
The Model 10A9-8C is a general-purpose thermocouple conditioner with built-in reference-junction compensation. It accepts up to eight independent temperature signals from Types B, E, J, K, R, S, and T Thermocouples. Any Desired Mixture Of These Thermocouple Types Is Permitted. Sensors may be grounded or ungrounded, in any desired mix. An amplifier-per-channel design with chopper stabilization and active low-pass filtering allows high-speed scan switching of high-level, stabilized signals, at exceptionally low cost per channel.This conditioner includes a special rear-panel connector block with screw terminals for direct attachment of TC leads (which cannot be soldered). The connector assembly contains a precision thermistor for measurement of the reference-junction temperature. Therefore, no external cold junction is required- although the user may supply his own Controlled Ambient Temperature Zone for reference-junction purposes, if desired. When the Model 10A9-8C is used in System 10, the reference-junction-corrected temperature is made available to the Central Processor through the Model 10A11 Thermocouple Output Processor Card. The purpose of the 10A11 is to proportion and sum the cold-junction reference signal and the amplified TC signal of each channel for presentation to the system’s Analog Signal Bus. One Model 10A11 must therefore be installed in every System 10 A-card rack containing one or more Model 10A9-8C’s.
You can use the Model 10CTJB-8 Thermocouple Junction Box with a Model 10A9-8C to move the temperature-compensated reference junction to the actual site of up to eight remote thermocouple sensors.
The 10A9-8C employs "absolute" calibration, which means that no calibration is required by the user, once each input’s "type," range, and resolution have been properly identified. 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.).
In the event of a broken thermocouple wire or other "open TC" condition, the 10A9-8C will automatically report an indeterminate off-scale reading for the TC channel in question. The conditioner is normally preset at the factory for positive off-scale "open TC" indication for each channel, but the user can easily reset any channel for negative indication.
Specifications:
- Measurement Range and Resolution: See Table below; automatically selected- on an individual channel basis- when the channel is configured
- Linearization: Internal digital look-up via system processor; maximum error: ±0.05° C
- Reference-Junction Compensation: At connector block, using built-in precision thermistor, or at remote TC site, using the Model 10CTJB-8 Thermocouple Junction Box
- Thermocouple Break Detection (per channel): Off-scale positive or negative indication, selectable by internal programming jumpers
- Amplifier (per channel):
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Normal-Mode Range: ±80 mV operating; ±100 V without instrument damage
Common-Mode Range: ±20 V operating; ±50 V without instrument damage
Common-Mode Rejection Ratio: DC: -116 dB; at 60 Hz: -120 dB
Input Impedance: Differential: 10 M-ohm; Common-Mode: 0.5 M-ohm
Offset: Initial: ±5 µV; vs. Temperature: ±0.1 µV/°C; vs. Time: ±1 µV/month
Gain Accuracy: ±0.05% of absolute mV input range of -10 to +80 mV
Gain Stability: vs. Temperature: ±50 ppm/°C; vs. Time: ±20 ppm/month
- Filter (per channel): 2-pole modified Butterworth; 3 dB down at 1 Hz; 60 dB down at 50 Hz
-
Step-Response Settling Time (Full-Scale Output):
To 1% of final value: 0.75 sec
To 0.1% of final value: 4 sec
To 0.02% of final value: 8 sec
- Total System Accuracy (typical, including Model 10A9-8C, Model 10A11 Thermocouple Output Processor (for System 10), and system data collection and processing): see Table below
- Auxiliary Outputs: None
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Thermocouple Ranges for Model 10A9-8C |
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TC Type |
Range |
Display Resolution* |
Typical System Accuracy** |
Max. Expected Error** |
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E J K R S T B |
-130°C to +1000°C -130°C to +750°C -75°C to +1350°C -20°C to +1750°C -20°C to +1750°C -130°C to +400°C +480°C to +1820°C |
0.1°C 0.1°C 0.1°C 0.1°C 0.1°C 0.1°C 0.1°C |
±0.6°C ±0.8°C ±1.1°C ±1.3°C ±1.3°C ±0.7°C ±1.3°C |
±0.8°C ±1.3°C ±1.5° ±2.6°C ±2.6°C ±1.1°C ±2.6°C |
|
E J K R S T B |
-200°F to +1800°F -200°F to +1400°F -100°F to +2500°F 0°F to +3200°F 0°F to +3200°F -200°F to +750°F +900°F to +3300°F |
0.2°F 0.2°F 0.2°F 0.2°F 0.2°F 0.2°F 0.2°F |
±1.0°F ±1.4°F ±1.8°F ±2.2°F ±2.2°F ±1.2°F ±2.2°F |
±1.4°F ±2.2°F ±2.6°F ±4.6°F ±4.6°F ±1.8°F ±4.6°F |
|
E J K R S T B |
-130°C to +1000°C -130°C to +750°C -75°C to +1350°C -20°C to +1750°C -20°C to +1750°C -130°C to +400°C +480°C to +1820°C |
1°C 1°C 1°C 1°C 1°C 1°C 1°C |
±1°C ±1°C ±1°C ±2°C ±2°C ±1°C ±2°C |
±2°C ±2°C ±2°C ±3°C ±3°C ±2°C ±3°C |
|
E J K R S T B |
-200°F to +1800°F -200°F to +1400°F -100°F to +2500°F 0°F to +3200°F 0°F to +3200°F -200°F to +750°F +900°F to +3300°F |
1°F 1°F 1°F 1°F 1°F 1°F 1°F |
±1°F ±2°F ±2°F ±3°F ±3°F ±1°F ±3°F |
±2°F ±3°F ±3°F ±5°F ±5°F ±2°F ±5°F |
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NOTE: Ranges printed in BOLDFACE apply to System 10 only. * Applies to System 10 only. (back to top) ** Including ± one count of least significant digit displayed (i.e., ±1, 0.2, or 0.1). Can be readily improved by control of instrument temperature, calibrating at known temperatures, etc. (back to top) |
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For complete Pricing and Ordering Information, write us or call Daytronic at 1-800-668-4745 |