Devar SM812EC RTD Transmitter with Fixed Ranges

Devar SM812EC RTD Transmitter with Fixed Ranges

Regular price $152.00 $145.00 Sale

  • 4-20 mA Output
  • Low Cost, 100 Ohm Pt, alpha = 0.00385
  • RTD or Potentiometer
  • Thermo-Head Installation
  • Non-Isolated
  • 0.1% Accuracy
  • Class 3-C RFI Immunity
  • Factory Calibrated
  • Low 8.5 VDC Drop
  • Ships in 1 Week for Fast and FREE Delivery

Conversion of RTD signals is accomplished using Devar's SM812EC series signal transmitters. Surface mount technology provides a slim profile allowing the series to mount directly within mininature thermal connection heads. The series accommodates Pt 100 Ohm RTDs and provides a 4-20 mA output current proportional to the detected temperature.

Devar's SM812EC series is available in -40 to 120F and 0 to 200F precalibrated temperature ranges. The span and zero potentiometers  provide span and zero adjustments of +/- 25% of the normal range.

 To Order the models below scroll to the top of the page and choose the desired model from the "Temperature Range" drop down menu, then ADD TO CART
 PART NUMBER DESCRIPTION
TX-DE-SM812EC-0011 RTD Transmitter Temp Range -40 to 120F
TX-DE-SM812EC-0012 RTD Transmitter Temp Range 0 to 200F

 

SPECIFICATIONS

ACCURACY

+/- 0.1% span, includes effects of linearity, hysterisis, and repeatability referred to temperature input

NONLINEARITY

0.1% relative to a  100 Ohm Pt RTD, alpha = 0.00385 standard curve for nominal range. 4:1 minimum improvement on nonlinearity otherwise

THERMAL EFFECT

1) Zero Shift of +/- 0.02% /Span/F

2) Span Shift of +/- 0.02% /Span/F

CIRCUITRY: epoxy encapsulated, analog circuitry w/sealed potentiometers

POWER SUPPLY: working voltage of 8.5-35 VDC, supply voltage effect <+/- 0.001% /Span/Volt

LOOP CONSIDERATIONS

1) loop resistance load effect <+/-0.002% Span/300 Ohms

2) maximum loop resistance (V supply -8.5V)/20 mA

RFI IMMUNITY: rated class 3-C: 0.25% of span per SAMA PMC 33.1-1987-2abc

FREQUENCY RESPONSE: output -3dB @ 3db @ 3Hz input

TEMPERATURE RANGE: ambient -13 to 185F, storage -85 to 257F

HUMIDITY: 0 to 95% noncondensing

INPUT: 100 Ohms Pt RTD, alpha = 0.00385

OUTPUT

1) signal range: 4 to 20 mADC

2) absolute limit: 2 to 29 mA

3) open RTD indication: output > 22mA

CALIBRATION RANGE ADJUSTABILITY:

1) zero 25% of normal span

2) Span 25% of normal span