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Thermocouple Input Socket Mount Signal Conditioner

Item# SMSC-TC-Series

In stock

Lead Time ( If not in Stock): 0 week

Thermocouple Input Socket Mount Signal Conditioner SMSC-TC-Series SMSC-TC-Series
  • Provides Isolated, Linearized DC Output in Proportion to Thermocouple Input
  • Field Configurable Thermocouple Types
  • Eliminates Ground Loops
  • Thermocouple Burnout Detection
  • Wide-Ranging 50% Zero and Span Adjustability
  • ASIC Technology for Enhanced Reliability

Product Specs

  • Accuracy Value 4 to 20 mA
  • Form Factor Socket Mount
  • Indicator Trouble LED: Yellow - off during normal device operation
  • Maximum Ambient Temperature 60 {C} (140 {F})
  • Minimum Ambient Temperature 0 {C} (32 {F})
  • Supply Frequency 50 to 60 Hz
  • Form Factor Socket Mount
  • Accuracy Value 4 to 20 mA
  • Indicator Trouble LED: Yellow - off during normal device operation
  • Maximum Ambient Temperature 60 {C} (140 {F})
  • Minimum Ambient Temperature 0 {C} (32 {F})
  • Supply Frequency 50 to 60 Hz

The SMSC-TC isolating thermocouple conditioner offers wide ranging input and output capability. The SMSC-TC can be field configured by the user to accept input from thermocouple Types J, K, T, E, R, S, and B and to provide current or voltage output. The output is linearized to temperature according to the particular thermocouple type.

The SMSC-TC is a three-port industrial isolator—the output is optically isolated from the input up to 1500 V, and both input and output are transformer isolated from the line power. Isolation allows the noise reduction benefits of grounded thermocouples to be realized without creating ground loop problems and it provides faster response. The SMSC-TC utilizes the latest in advanced analog/digital signal processing technology. In addition to its multiple microprocessors, it employs special ASIC circuitry for high accuracy and reliability.

The SMSC-TC is equipped with cold-junction compensation (CJC) circuitry to provide icepoint reference. Upscale, downscale or disabled thermocouple burnout detection is switch selectable.

The SMSC-TC is useful in any application requiring an isolated DC output from a thermocouple input. Typical applications include energy management and data acquisition of process temperatures. The output of the SMSC-TC can drive a digital meter for direct display or interface with a computer for monitoring and control applications.

Model SMSC-TC is equipped with top-mounted LEDs for INPUT (green), TROUBLE (yellow) and CAL OK (yellow). At start-up, both the INPUT and the CAL OK LEDs light up momentarily for 1 second. Afterwards, these LEDs flash alternately for 10 seconds while startup takes place.

The input LED is a diagnostic tool. It remains continuously lit if the measured temperature is within the selected range of the thermocouple. However, if the measured temperature is outside the full range of the thermocouple (for example, for a Type J below minus 200°C or above 750°C), the LED will flash at a rate of 4 or 8 Hz for under/over range, respectively. If the thermocouple is within the full temperature range, but outside the selected sub-range (for example, if a Type J thermocouple is set for a range of 375 to 500°C and the temperature is either below 375°C or above 500°C) the LED will flash at 0.5 or 1 Hz respectively.

The CAL OK LED is continuously on when the device is properly storing the factory calibration reference voltage. The TROUBLE LED is off during normal operation of the device.

A major advantage of the SMSC-TC is its wide ranging capabilities and ease of configuration. The SMSC-TC enables 50% input zero and span adjustability within the selected sub-range.

For example for Type E thermocouple range from -18 to 125°C, since the span can be contracted by 50%, this enables an input span as narrow as 50% of 143, or 72°C. This span can then be positioned anywhere within the temperature range and can have a zero step-up as large as 50% of the full scale range (e.g. span can start as high as 53°C).

The factory default configuration for the model SMSC-TC is as follows:
Input: Type J
Range: 0 to 500°C (32 to 932°F)
Output: 4 to 20 mA
Burn Out: Upscale

Specifications
INPUT
Ranges: Field configurable, see table
Impedance: >1 MΩ
Input Bias Current (Burnout Detection): <1.5 µA
Overvoltage: ±10V differential
Common Mode (Input to Ground): 1500 Vdc or peak AC, max
Zero and Span Range:
Zero Turn-Up: 0 to 50% of full scale range
Span Turn-Down: 100 to 50% of full scale range
OUTPUT
Voltage Output (Dip-Switch Selectable):
Ranges: 0 to 5 V, 0 to 10 V
Impedance: <10 Ω
Drive: 10 mA max (1 kΩ min)
Current Output (Dip-Switch Selectable):
Ranges: 0 to 1 mA, 4 to 20 mA
Impedance: >100 kΩ
Compliance: 10 V max (500 Ω max @ 20 mA)
Response Time (10 to 90%): 500 mSec, typical
Stability: ±0.04%/°C of full scale range
Isolation: 1500 Vdc or peak AC between input, output and power
ESD Susceptibility: Meets IEC 801-2, Level 2 (4 kV)
Common Mode Rejection: DC to 60 Hz: 120 dB
LED Indicators:
Trouble LED: Yellow - off during normal device operation
Input LED: Green - continuously on if input is within selected range, flashes otherwise
CAL OK LED: Yellow - continuously on in normal device operation
Thermocouple Burnout Detect: Field-configurable Upscale or Downscale, or disabled
Humidity (Non-Condensing):
Operating: 25 to 95% RH @ 45°C (113°F)
Soak: 90% RH for 24 Hours @ 65°C (149°F)
Temperature Range:
Operating: 0 to 60°C (32 to 140°F)
Storage: -15 to 75°C (5 to 167°F)
Power:
Consumption: 3 W typical, 5 W max
Standard: 120 Vac ±10%, 50 to 60 Hz
Optional: 240 Vac
Weight: 282 g (0.62 lb)

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