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Electronic Temperature Measurement

Home » Products » Temperature » Electronic Temperature Measurement » 850 Series Electronic Indicating Temperature Transmitter/Switch

850 Series Electronic Indicating Temperature Transmitter/Switch

  • Utilizes PT1000 technology for continuous temperature monitoring, electronic temperature switching, and transmission of analog output while providing local digital indication
  • Allows for one or two switching outputs as well as optional current and voltage outputs
  • Three buttons on top allow simple adjustment of the temperature set points, reset points, switching functions and the measuring range of the optional analog output
  • 1/2” NPT Male standard connection
  • A variety of stem lengths are available for maximum versatility; also available with adjustable insertion lengths via the sliding compression fitting
  • Durable Stainless Steel housing and wetted parts
  • Display and electrical connection can be rotated independently
  • RoHS compliant

     Note: Thermowells are recommended for pressure, corrosive fluids and high velocity applications.

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SERIES 850          
SWITCH FUNCTIONS 1 2 N.O. or 2 N.C. switch (PNP*) 4 2 N.O. or 2 N.C. switch (PNP*) with 4 mA to 20 mA 3-wire analog output**
2 1 N.O. or 1 N.C. switch (PNP*) with
4 mA to 20 mA 3-wire analog output
5 2 N.O. or 2 N.C. switch (PNP*) with 0 Vdc to 10 Vdc 3-wire output)**
3 1 N.O. or 1 N.C. switch (PNP*) with 0 Vdc to 10 Vdc 3-wire output        
PROCESS CONNECTIONS 2 1/4" NPT male 47 1/4” NPT Male sliding compression fitting    
8 1/2" NPT Male 48 1/2” NPT Male sliding compression fitting    
TEMPERATURE RANGES -4/176 -4 °F to 176 °F (-20 °C to 80 °C) -4/248 -4 °F to 248 °F (-20 °C to 120 °C)
This range is available with sliding compression fitting ONLY
ELECTRICAL CONNECTION 2 M12 X 1 (4-PIN) 3 M12 X 1 (5-pin, 2 switch and output)    
STEM LENGTHS 010 1" *** 040 4" 120 12"
020 2" *** 060 6"    
025 2.5" *** 090 9"    
STEM DIAMETERS 6 6 mm        

* NPN available, consult factory
** Available only with M12 x 1 (5-pin) connector
*** Not available with sliding compression fitting
†  Available only with sliding compression fitting process connection and stem lengths ≥4"

If you are viewing on a smaller screen or with screen zoom, please use the horizontal scroll bar at the bottom of this table to see all information.

SPECIFICATIONS
Temperature ranges Standard -4 °F to 176 °F (-20 °C to 80 °C)
Optional -4 °F to 248 °F ( -20 °C to 120 °C)
Selectable display for °F or °C
Temperature sensor Platinum resistor (PT1000 2-wire, DIN EN 60751 Class A)
Wetted materials 316Ti Stainless Steel
Housing materials 304 Stainless Steel
Max. operating pressure 2,000 psi (1/2" NPT Male fixed process connection);
725 psi (1/2" NPT Male sliding compression fitting process connection)
Power requirement* 15 Vdc to 35 Vdc
Power consumption ≤ 50 mA, without load
Signal output adjustment Zero point: 0-25% of span
Full scale: 75-100% of span
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
 ≤ 0.5% of span
Switch rating Max. 250 mA
Electrical connection M12 x 1 (4-pin), M12 x 1 (5-pin)
Accuracy
    Analog signal
    Switching output
    Display
    Temperature sensor
 
≤ ±0.5% of span + temperature sensor error
≤ ±0.8% of span + temperature sensor error
≤ ±(0.8% of span + temperature sensor error) ±1 digit
For °F: ±[1.8*(0.15 + 0.002 (t - 32) / 1.8)]
For °C: ±(0.15 K + 0.002 I t I) per EN 60751
Display 14 segment-LED, red 4-digit, height 0.35”
Environmental protection IP65 and IP67 (IEC 60529)

* Unregulated

Options & Accessories

  • Single Factory Adjusted Switch Point (Specify)
  • Double Factory Adjusted Switch Point (Specify)

Thermowells allow a temperature instrument to be removed and replaced without shutting down and draining the process, and reduce the possibility of damage to the temperature instrument.

View NOSHOK Thermowells


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov