DSCA37 - Non-Linearized Thermocouple Input Signal Conditioners

Main features

  • Interfaces to Types J, K, T, E, R, S, B, and N Thermocouples
  • Industry Standard Output of Either 0-10V, 0-20mA, or 4-20mA
  • 1500Vrms Transformer Isolation
  • ANSI/IEEE C37.90.1 Transient Protection
  • Input Protected to 240VAC Continuous
  • True 3-Way Isolation
  • Wide Range of Supply Voltage
  • 160dB CMR
  • 85dB NMR at 60Hz, 80dB at 50Hz
  • ±0.05% Accuracy
  • ±0.01% Linearity
  • Easily Mounts on Standard DIN Rail
  • C-UL-US Listed
  • CE and ATEX Compliant
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Price request Datasheet

Each DSCA37 non-linearized thermocouple input module provides a single channel of thermocouple input which is filtered, isolated, amplified, and converted to a high-level voltage 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 poles are on the system 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 DSCA37 can interface to eight industry standard thermocouple types: J, K, T, E, R, S, B and N. Each module has cold junction compensation to correct for parasitic thermocouples formed by the thermocouple wire and input screw terminals on the module. Upscale open thermocouple detection is provided by internal circuitry. Downscale indication can be implemented by installing a 47 MOhm, ±20% resistor between screw terminals 6 and 8 on the input terminal block.

Module output is either voltage or current. For current output models a dedicated loop supply is provided at terminal 3 (+OUT) with loop return located at terminal 4 (-OUT). The system-side load may be either floating or grounded.

Special input circuits provide protection against accidental connection of powerline voltages up to 240VAC and against transient events as defined by ANSI/ IEEE C37.90.1. Protection circuits are also present on the signal output and power input terminals to guard against transient events and power reversal. Signal and power lines are secured to the module using screw terminals which are in pluggable terminal blocks for ease of system assembly and reconfiguration.

The modules have excellent stability over time and do not require recalibration, however, zero and span settings are adjustable up to ±5% to accommodate situations where fine-tuning is desired. The adjustments are made using potentiometers located under the front panel label and are non-interactive for ease of use.

DSCA37B-07 - Thermocouple type: B Input Range: 0 to 1800 °C Output Range: 0 to +10 V

DSCA

DSCA37B-07C - Thermocouple type: B Input Range: 0 to 1800 °C Output Range: 4 to 20 mA

DSCA

DSCA37B-07E - Thermocouple type: B Input Range: 0 to 1800 °C Output Range: 0 to 20 mA

DSCA

DSCA37E-04 - Thermocouple type: E Input Range: 0 to 900 °C Output Range: 0 to +10 V

DSCA

DSCA37E-04C - Thermocouple type: E Input Range: 0 to 900 °C Output Range: 4 to 20 mA

DSCA

DSCA37E-04E - Thermocouple type: E Input Range: 0 to 900 °C Output Range: 0 to 20 mA

DSCA

DSCA37J-01 - Thermocouple type: J Input Range: -100 to 760 °C Output Range: 0 to +10 V

DSCA

DSCA37J-01C - Thermocouple type: J Input Range: -100 to 760 °C Output Range: 4 to 20 mA

DSCA

DSCA37J-01E - Thermocouple type: J Input Range: -100 to 760 °C Output Range: 0 to 20 mA

DSCA

DSCA37K-02 - Thermocouple type: K Input Range: -100 to 1350 °C Output Range: 0 to +10 V

DSCA

DSCA37K-02C - Thermocouple type: K Input Range: -100 to 1350 °C Output Range: 4 to 20 mA

DSCA

DSCA37K-02E - Thermocouple type: K Input Range: -100 to 1350 °C Output Range: 0 to 20 mA

DSCA

DSCA37N-08 - Thermocouple type: N Input Range: -100 to 1300 °C Output Range: 0 to +10 V

DSCA

DSCA37N-08C - Thermocouple type: N Input Range: -100 to 1300 °C Output Range: 4 to 20 mA

DSCA

DSCA37N-08E - Thermocouple type: N Input Range: -100 to 1300 °C Output Range: 0 to 20 mA

DSCA

DSCA37R-05 - Thermocouple type: R Input Range: 0 to 1750 °C Output Range: 0 to +10 V

DSCA

DSCA37R-05C - Thermocouple type: R Input Range: 0 to 1750 °C Output Range: 4 to 20 mA

DSCA

DSCA37R-05E - Thermocouple type: R Input Range: 0 to 1750 °C Output Range: 0 to 20 mA

DSCA

DSCA37S-06 - Thermocouple type: S Input Range: 0 to 1750 °C Output Range: 0 to +10 V

DSCA

DSCA37S-06C - Thermocouple type: S Input Range: 0 to 1750 °C Output Range: 4 to 20 mA

DSCA

DSCA37S-06E - Thermocouple type: S Input Range: 0 to 1750 °C Output Range: 0 to 20 mA

DSCA

DSCA37T-03 - Thermocouple type: T Input Range: -100 to 400 °C Output Range: 0 to +10 V

DSCA

DSCA37T-03C - Thermocouple type: T Input Range: -100 to 400 °C Output Range: 4 to 20 mA

DSCA

DSCA37T-03E - Thermocouple type: T Input Range: -100 to 400 °C Output Range: 0 to 20 mA

DSCA

DSCA37Non-Linearized Thermocouple Input Signal Conditioners
DSCA37B-07Thermocouple type: B Input Range: 0 to 1800 °C Output Range: 0 to +10 V
DSCA37B-07CThermocouple type: B Input Range: 0 to 1800 °C Output Range: 4 to 20 mA
DSCA37B-07EThermocouple type: B Input Range: 0 to 1800 °C Output Range: 0 to 20 mA
DSCA37E-04Thermocouple type: E Input Range: 0 to 900 °C Output Range: 0 to +10 V
DSCA37E-04CThermocouple type: E Input Range: 0 to 900 °C Output Range: 4 to 20 mA
DSCA37E-04EThermocouple type: E Input Range: 0 to 900 °C Output Range: 0 to 20 mA
DSCA37J-01Thermocouple type: J Input Range: -100 to 760 °C Output Range: 0 to +10 V
DSCA37J-01CThermocouple type: J Input Range: -100 to 760 °C Output Range: 4 to 20 mA
DSCA37J-01EThermocouple type: J Input Range: -100 to 760 °C Output Range: 0 to 20 mA
DSCA37K-02Thermocouple type: K Input Range: -100 to 1350 °C Output Range: 0 to +10 V
DSCA37K-02CThermocouple type: K Input Range: -100 to 1350 °C Output Range: 4 to 20 mA
DSCA37K-02EThermocouple type: K Input Range: -100 to 1350 °C Output Range: 0 to 20 mA
DSCA37N-08Thermocouple type: N Input Range: -100 to 1300 °C Output Range: 0 to +10 V
DSCA37N-08CThermocouple type: N Input Range: -100 to 1300 °C Output Range: 4 to 20 mA
DSCA37N-08EThermocouple type: N Input Range: -100 to 1300 °C Output Range: 0 to 20 mA
DSCA37R-05Thermocouple type: R Input Range: 0 to 1750 °C Output Range: 0 to +10 V
DSCA37R-05CThermocouple type: R Input Range: 0 to 1750 °C Output Range: 4 to 20 mA
DSCA37R-05EThermocouple type: R Input Range: 0 to 1750 °C Output Range: 0 to 20 mA
DSCA37S-06Thermocouple type: S Input Range: 0 to 1750 °C Output Range: 0 to +10 V
DSCA37S-06CThermocouple type: S Input Range: 0 to 1750 °C Output Range: 4 to 20 mA
DSCA37S-06EThermocouple type: S Input Range: 0 to 1750 °C Output Range: 0 to 20 mA
DSCA37T-03Thermocouple type: T Input Range: -100 to 400 °C Output Range: 0 to +10 V
DSCA37T-03CThermocouple type: T Input Range: -100 to 400 °C Output Range: 4 to 20 mA
DSCA37T-03EThermocouple type: T Input Range: -100 to 400 °C Output Range: 0 to 20 mA

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