- 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 |
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| 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 |
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| PROCESS CONNECTIONS |
2 |
1/4" NPT male |
47 |
1/4” NPT Male sliding compression fitting |
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| 8 |
1/2" NPT Male |
48 |
1/2” NPT Male sliding compression fitting |
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| 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)†† |
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| STEM LENGTHS |
010 |
1" *** |
040 |
4" |
120 |
12" |
| 020 |
2" *** |
060 |
6" |
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| 025 |
2.5" *** |
090 |
9" |
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| STEM DIAMETERS |
6 |
6 mm |
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* 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"
†† Switch function 4 and 5 only
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
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