DSCT37, Non-Linearized Thermocouple Input Transmitters
![DSCT37, Non-Linearized Thermocouple Input Transmitters](img/series/2287_DSCT.jpg)
![DSCT37, Non-Linearized Thermocouple Input Transmitters](img/series/2287_DSCT.jpg)
- Interfaces to Types J, K, T, E, R, S, B, and N Thermocouples
- Process Current Output
- 1500Vrms Transformer Isolation
- ANSI/IEEE C37.90.1 Transient Protection
- Input and Output Protected to 240VAC Continuous
- Up to 60V Loop Voltage
- 160dB CMR
- 85dB NMR at 60Hz, 80dB at 50Hz
- ±0.05% Accuracy
- ±0.01% Linearity
- Easily Mounts on Standard DIN Rail
- CSA and FM Approvals Pending
- CE Compliant
Each DSCT37 non-linearized thermocouple input transmitter provides a single channel of thermocouple input which is filtered, isolated, amplified, and converted to a process current output. Signal filtering is accomplished with a five-pole filter, which provides 85dB of normal-mode rejection at 60Hz and 80dB at 50Hz. An anti-aliasing pole is located on the field side of the isolation barrier, and the other four are on the process loop side. After the initial field-side filtering, the input signal is chopped by a proprietary chopper circuit. Isolation is provided by transformer coupling, again using a proprietary technique to suppress transmission of common mode spikes or surges.
The DSCT37 can interface to eight industry standard thermocouple types: J, K, T, E, R, S, B and N. Each transmitter is cold-junction compensated to correct for parasitic thermocouples formed by the thermocouple wire and screw terminals on the transmitter. Upscale open thermocouple detection is provided by circuitry. Downscale indication can be implemented by installing a 47 MOhm, ±20% resistor between screw terminals 6 (+IN) and 8 (-EXC) on the input terminal block.
Special input and output circuits on the DSCT37 transmitters provide protection against accidental connection of power-line voltages up to 240VAC and against transient events as defined by ANSI/IEEE C37.90.1. Loop power lines are secured to the module using screw terminals, which are in pluggable terminal blocks for ease of system assembly and reconfiguration. Transmitter zero and span settings are adjustable up to ±10%. The adjustments are made using potentiometers located under the front panel label and are non-interactive for ease of use.
Input Type | Thermocouple |
# of Inputs | 1 |
Output Type | 4 - 20 mA |
Max Bandwidth | 3 Hz |
Isolation | Yes |
Supply Power | 12 - 60 V DC |
DSCT37J-01 | Thermocouple Type J, Temperature Range: -100°C to +760°C |
DSCT37K-02 | Thermocouple Type K, Temperature Range: -100°C to +1350°C |
DSCT37T-03 | Thermocouple Type T, Temperature Range: -100°C to +400°C |
DSCT37E-04 | Thermocouple Type E, Temperature Range: 0°C to +900°C |
DSCT37R-05 | Thermocouple Type R, Temperature Range: 0°C to +1750°C |
DSCT37S-06 | Thermocouple Type S, Temperature Range: 0°C to +1750°C |
DSCT37B-07 | Thermocouple Type B, Temperature Range: 0°C to +1800°C |
DSCT37N-08 | Thermocouple Type N, Temperature Range: -100°C to +1300°C |
DSCT37 Non-Linearized Thermocouple Input Transmitter V2 Datasheet |
DSCT37- Non-Linearized Thermocouple Input Transmitters Datasheet |
DSCT Diagram Drawings |
DSCT Intro Brochure |
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AN121 RiseTime vs BW App Note |
AN126 Tuning_Surge_Tank_Level_Control_Loops App Note |
AN127 OP-Amp Errors, another View App Note |
AN128 RMS Revisited App Note |
AN129 Harmonics and utility costs App Note |
Hysteresis Specifications Tech Note |
Faraday's Law of Induction Tech Note |
Data Acquisition Systems Accessories Tech Note |
Signal Conditioner Surge Withstand Capability Tech Note |
Signal-to-Noise Ratio, SNR Tech Note |
Signal Conditioning Measured vs Combinational Error Tech Note |
When Good Grounds Go Bad Tech Note |
Signal Conditioner Life Tech Note |
Why Should Sensors Be Isolated Tech Note |
- Interfaces to 100 Ohm Platinum or 120 Ohm Nickel RTDs
- Linearizes RTD Signal
- Process Current Output
- 1500Vrms Transformer Isolation
- ANSI/IEEE C37.90.1 Transient Protection
- Input and Output Protected to 240VAC Continuous
- Up to 60V Loop Voltage
- 160dB CMR
Input Type | RTD |
# of Inputs | 1 |
Output Type | 4 - 20 mA |
Max Bandwidth | 3 Hz |
Isolation | Yes |
Supply Power | 12 - 60 V DC |
- Interfaces to Types J, K, T, E, R, S, B, and N Thermocouples
- Linearizes Thermocouple Signal
- Process Current Output
- 1500Vrms Transformer Isolation
- ANSI/IEEE C37.90.1 Transient Protection
- Input and Output Protected to 240VAC Continuous
- Up to 60V Loop Voltage
- 160dB CMR
Input Type | Thermocouple |
# of Inputs | 1 |
Output Type | 4 - 20 mA |
Max Bandwidth | 3 Hz |
Isolation | Yes |
Supply Power | 12 - 60 V DC |
- Linearized Thermocouple Input Module
- 1500 V Transformer Isolation
- True 3-Way Isolation
- Accuracy: ± 0.08%
- DIN Rail Mounted Module
- ANSI/IEEE C37.90.1 Transient Protection
- Input Protected to 240 V AC Continuous
Input Type | Thermocouple |
# of Inputs | 1 |
Output Type | 0 - 10 V DC, 0 - 20 mA, 4 - 20 mA |
Max Bandwidth | 3 Hz |
Isolation | Yes |
Supply Power | 15 - 30 V DC |
- Non-Linearized Thermocouple Input Module
- 1500 V Transformer Isolation
- True 3-Way Isolation
- Accuracy: ± 0.05%
- DIN Rail Mounted Module
- ANSI/IEEE C37.90.1 Transient Protection
- Input Protected to 240 V AC Continuous
Input Type | Thermocouple |
# of Inputs | 1 |
Output Type | 0 - 10 V DC, 0 - 20 mA, 4 - 20 mA |
Max Bandwidth | 3 Hz |
Isolation | Yes |
Supply Power | 15 - 30 V DC |
- Linearized 2- or 3-Wire RTD Input Module
- 1500 V Transformer Isolation
- True 3-Way Isolation
- Accuracy: ± 0.08%
- DIN Rail Mounted Module
- ANSI/IEEE C37.90.1 Transient Protection
- Input Protected to 240 V AC Continuous
Input Type | RTD |
# of Inputs | 1 |
Output Type | 0 - 10 V DC, 0 - 20 mA, 4 - 20 mA |
Max Bandwidth | 3 Hz |
Isolation | Yes |
Supply Power | 15 - 30 V DC |