Isolated Two Wire Thermocouple Transmitter with Selectable Ranges- Devar Model SM815
Isolated Two Wire Thermocouple Transmitter with Selectable Ranges- Devar Model SM815

Devar SM815 Isolated Thermocouple Transmitter with Field Selectable Ranges

Regular price $363.00 $359.00 Sale

  • Fully Isolated
  • 0.1% Accuracy
  • Thermocouple Input Type J/K/T/E/R/S
  • Dip Switch Calibration
  • Thermo-Head Installation
  • Field Rangeable Via Dip Switch (No Soldering)
  • Ships in 1 Week for Fast and FREE Delivery

Devar's SM815 isolated two wire TC transmitter receives signals from thermocouples and provides a proportional 4 to 20 mA output signal which is completely  isolated from the input. Because the SM815 is a two wire device, a single pair of twisted copper wires are all that is required to provide power to the unit as well as to carry the output current.

The SM815 is field calibratable, accepting inputs from type J, K, E, R, S & T thermocouples, with millivolt spans ranging from 4 to 64 millivolts. Thermocouple types and ranges are selected using a 6 position DIP switch and final calibration is accomplished by means of multiturn zero and span potentiometers. The zero pot provides an offset adjustment of ± 25% of the span. The SM815 is provided with upscale thermocouple break indication.

 To Order the model below scroll to the top of the page then click on ADD TO CART button
 PART NUMBER DESCRIPTION
TX-DE-SM815 2 Wire T/C Transmitter, Selectable Ranges, ISOLATED

 

 Downloads

Specsheet

User Manual

 

SPECIFICATIONS

POWER REQUIREMENT:  8.5 to 35 VDC at terminal block

ACCURACY: 0.1 % of millivolt span

WORKING TEMPERATURE:  - 25 ºC To 85 ºC

STORAGE TEMPERATURE: - 65 ºC To 125 ºC

THERMAL ZERO SHIFT: 0.01 % /ºC ( span > 10 mV ) 0.02 %/ºC ( span < 10 mV )

ISOLATION: 500 VRMS

COMMON MODE REJECTION: 115 dB at 60 Hz

3 dB FRQUENCY: 3 Hz

WEIGHT: 2.5 oz.

INPUT

Sensor Input: Thermocouples J, K, T, E, R & S

Input Break Indication: upscale

Input Offset Adjustment: ± 25 % of mV span

Input Source Current: 4 nA typical

Input Resistance: > 73 X 107 Ohms

OUTPUT

Output Range: 4 to 20 milliamps

Output Limits: 3 to 28 mA, Typical

Max. Load Resistance: = (supply voltage - 8.5V) / 20 mA

Load Effect: <.01% of Span / 300 Ω Change

Power Supply Effect: <.002% of Span per Volt