Temperature Sensors
Temperature sensors for particularly rough environments
Optimize plant efficiency and increase measurement reliability
Ex-certified, including Ex-d according to ATEX
- Industry-leading calibration capabilities allow for Callendar-van Dusen values to give increased accuracy when paired with PTT74 transmitters.
- Full penetration weld standard on thermowells increases thermowell strength.
- Tapered tips on thermowells allow for a faster time response
Specifications
Material selection
It is the purchaser’s sole responsibility to make a careful analysis of all process parameters (such as all chemical components, temperature, pressure, flow rate, abrasives, contaminants, etc.), when specifying product, materials, options and components for the particular application. Process Management is not in a position to evaluate or guarantee the compatibility of the process fluid or other process parameters with the product, options, configuration or materials of construction selected.
Platinum RTD
100ΩRTD at 0 °C, α= 0.00385 Ω/Ωx °C
Temperature range
–196 to 600 °C (-320.8 to 1112 °F)
Insulation resistance
1,000 MΩ minimum insulation resistance when measured at 500 Vdc and at room temperature.
Sheath material
316 SST/321 SST with mineral-insulated cable construction
Lead wire
PTFE insulated, 24 AWG, silver-plated copper wire. See Wiring Diagram for wire configuration.
Ingress Protection (IP) ratings
IP65
Self-heating
0.15 K/mW when measured per method defined in DIN EN 60751:1996
Thermal response time
Tested in accordance to IEC 751 guidelines.
Thermocouple
Temperature range
See Table 3 Characteristics of TW74 ThermocouplesZ
Insulation resistance
1,000 MΩ minimum insulation resistance when measured at 500 Vdc and at room temperature.
Sheath material
FAHM thermocouples are made of a mineral insulated cable design with a variety of sheath materials available to suit both the temperature and the environment. For temperature up to 800 °C (1472 °F) in air, the sheath is made from 321 SST. For temperatures above 800 °C (1472 °F) in air, the sheath is made from Alloy 600.
Lead wires
Thermocouple, internal – 19 AWG solid wire (max) and 21 AWG solid wire (min.). External extension leads, Type E, J, K, N, R, S, and T. PTFE insulated. 20 AWG (max.) and 24 AWG (min.) Color coded per IEC or ISA standards. Wiring Diagram shows the wire configuration.
Thermowell
Functions
- Thermowells in large variety protects against mechanical and chemical load
- The exchangeable inset generates the measuring signal
- Full penetration weld standard on TW74 thermowells increases thermowell strength.
- Tapered tips on TW74 thermowells allow for a faster time response.
Build from mineral insulated cable (MIC)
- For high vibration, temperature-change resistance pliability and electrical insulation of the probe
ATEX conformal executions for explosion protection
- Intrinsically safe for explosion proof assemblies
