Noshok
850 Series Electronic Indicating Temperature Transmitter/Switch

Key Features

  • Utilizes PT100 technology to provide continuous temperature monitoring, 
    electronic temperature switching, and transmission of analog output of 4 mA to 20 mA 
    while providing local digital indication
  • Allows for one or two switching outputs as well as an optional analog output
  • Two buttons on top allow simple adjustment of the temperature set points, reset points,
    switching functions and the measuring range of the optional analog output
  • Wide measuring range (between -300 °F and 1,100 °F / -200 °C and 600 °C) covers 
    the majority of temperature measuring and switching applications
  • 1/2" NPT male standard connection, 1/4" NPT optional
  • A variety of stem lengths are available for maximum versatility (also available with 
    adjustable insertion lengths)
  • A version with tapered stem is also available for rapid response times
  • Durable stainless steel housing and wetted parts
  • The housing and replaceable measuring insert are screwed together to allow
    the exchange of the measuring insert without opening the connection to the process

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Application:

  • Mechanical engineering
  • Heating and cooling circuits
  • Air conditioning technology
  • Plant construction
  • Environmental technology

SPECIFICATIONS
Temperature ranges Standard ranges from -300 °F to 1,100 °F (-200 °C to 600 °C)
Selectable display for °F or °C
Temperature sensor Platinum resistor (PT100 2-Wire, Class B)
Wetted materials 316Ti Stainless steel
Housing materials Stainless steel
Working pressure 6 mm stem diameter; 600 psi
8 mm stem diameter; 1,500 psi
Power supply* 12 Vdc to 30 Vdc
Power consumption ? 50 mA, without load
Signal output 4 mA to 20 mA Scaleable from 20-100% of range
Switch points
 Number
 Function
 Adjustment
Individually adjustable via external control keys
 1 or 2 (PNP)
 N.O. / N.C.; windows-and hysteresis function freely adjustable
 Set point: 0.1° steps within temperature range
 Reset point: 0.1° steps from beginning temperature range until (set point -0.1°)
Switch rating 100 mA per switch
Electrical connection M12 X 1 (4-pin)
Accuracy Class B +0.1°% of the temperature range
Display 7 Segment-LED, red 4-digit, height 0.3"
Temperature ranges
 Storage
 Ambient
 Influence

-22 °F to 176 °F (-30 °C to 80 °C)
-13 °F to 158 °F (-25 °C to 70 °C)
±0.006% of measuring range per °F
Environmental protection NEMA 4; IP65 (IEC 529)
Weight 0.66 lb