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AcuTEMS IM Immersion temperature sensor product images
Front view of the AcuTEMS IM Immersion temperature sensor
Front-left angled view of the AcuTEMS IM Immersion temperature sensor
Front-right angled view of the AcuTEMS IM Immersion temperature sensor
Right-side view of the AcuTEMS IM Immersion temperature sensor
CE Mark

Immersion Temperature Sensors

AcuTEMS IM Overview

How to choose an Immersion Temperature Sensor?

Immersion temperature sensor designed to measure liquid temperature in hydronic systems such as chilled water lines, hot water loops, and boiler piping, using resistance-based sensing elements including 100Ω Platinum, 1KΩ Platinum or Nickel RTDs, and 10KΩ Type II/III or 20KΩ thermistors to provide accurate temperature measurement compatible with Building Automation System (BAS) controllers. Available in multiple probe lengths and installed into a welded 304SS thermowell pre-filled with heat transfer paste to optimize thermal conductivity while protecting against fluid exposure, corrosion, and pressure. Housed in an IP65-rated enclosure to prevent dust and moisture ingress, allowing reliable operation in mechanical rooms, utility spaces, and industrial environments.

Front-right angled view of the AcuTEMS IM Immersion temperature sensor

AcuTEMS IM Applications

Illustration of the Monitors Fluid Temperature feature of the AcuTEMS IM Temperature Sensor.

Monitors Fluid Temperature

With a 304 stainless steel thermowell and an IP65 rated enclosure, the AcuTEMS IM is able to accurately measure fluid temperature, while providing robust protection against corrosion and water/dust ingress.

Illustration of Hydronic Heating & Cooling System of the AcuTEMS IM Temperature Sensor.

Hydronic Heating & Cooling System

AcuTEMS IM monitors the water temperature circulating through the HVAC system, making sure they are maintained at the desired temperature level, improving system efficiency. The sensor can also be integrated with a building automation system to enable real-time monitoring and automated control of the equipment.

Illustration of the Industrial Process Control feature of the AcuTEMS IM Temperature Sensor.

Industrial Process Control

Fluids such as water, oil, or other chemicals are commonly used in industrial process control systems, and it is crucial to maintain the fluid temperature at a certain level to ensure safe and efficient operation. The AcuTEMS IM immersion sensor can be directly inserted into pipes or tanks to monitor and regulate the fluid temperature.

AcuTEMS IM - Monitors Fluid Temperature Icon.
Monitors Fluid Temperature
Illustration of the Monitors Fluid Temperature feature of the AcuTEMS IM Temperature Sensor.

Monitors Fluid Temperature

With a 304 stainless steel thermowell and an IP65 rated enclosure, the AcuTEMS IM is able to accurately measure fluid temperature, while providing robust protection against corrosion and water/dust ingress.

AcuTEMS IM - Hydronic Heating & Cooling System Icon.
Hydronic Heating & Cooling System
Illustration of Hydronic Heating & Cooling System of the AcuTEMS IM Temperature Sensor.

Hydronic Heating & Cooling System

AcuTEMS IM monitors the water temperature circulating through the HVAC system, making sure they are maintained at the desired temperature level, improving system efficiency. The sensor can also be integrated with a building automation system to enable real-time monitoring and automated control of the equipment.

AcuTEMS IM - Industrial Process Control Icon.
Industrial Process Control
Illustration of the Industrial Process Control feature of the AcuTEMS IM Temperature Sensor.

Industrial Process Control

Fluids such as water, oil, or other chemicals are commonly used in industrial process control systems, and it is crucial to maintain the fluid temperature at a certain level to ensure safe and efficient operation. The AcuTEMS IM immersion sensor can be directly inserted into pipes or tanks to monitor and regulate the fluid temperature.

AcuTEMS IM Diagram

Illustration of the overall application of the AcuTEMS IM Temperature Sensor.

AcuTEMS IM Models

AcuTEMS-IM-A
Temperature
Output
Temperature
Sensor
Temperature
Accuracy
Probe Length
Enclosure
Certification
Front-right angled view of the AcuTEMS IM immersion temperature sensor Resistive Thermistor 10K Ω, Type III ±0.3°C @ 25°C
(±0.54°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
Resistive Thermistor 10K Ω, Type II ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
Resistive Thermistor 20K Ω ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
RTD 1K Ω Platinum,
2 Wires		 ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
RTD 100 Ω Platinum ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
RTD 1K Ni Ω Nickel ±0.5°C @ 25°C
(±0.9°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
AcuTEMS-IM-B
Temperature
Output
Temperature
Sensor
Temperature
Accuracy
Probe Length
Enclosure
Certification
Front-right angled view of the AcuTEMS IM immersion temperature sensor 4-20mA 1KΩ Platinum
RTD 0-100°C
(32-212°F)		 ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
4-20mA 1KΩ Platinum
RTD Other Span		 ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
AcuTEMS-IM-C
Temperature
Output
Temperature
Sensor
Temperature
Accuracy
Probe Length
Enclosure
Certification
Front-right angled view of the AcuTEMS IM immersion temperature sensor 0-10VDC 1KΩ Platinum
RTD 0-100°C
(32-212°F)		 ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
0-10VDC 1KΩ Platinum
RTD Other Span		 ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
AcuTEMS-IM-A
Front-right angled view of the AcuTEMS IM immersion temperature sensor
Temperature
Output
Temperature
Sensor
Temperature
Accuracy
Probe Length
Enclosure
Certification
Resistive Thermistor 10K Ω, Type III ±0.3°C @ 25°C
(±0.54°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
Resistive Thermistor 10K Ω, Type II ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
Resistive Thermistor 20K Ω ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
RTD 1K Ω Platinum,
2 Wires		 ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
RTD 100 Ω Platinum ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
RTD 1K Ni Ω Nickel ±0.5°C @ 25°C
(±0.9°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
AcuTEMS-IM-B
Front-right angled view of the AcuTEMS IM immersion temperature sensor
Temperature
Output
Temperature
Sensor
Temperature
Accuracy
Probe Length
Enclosure
Certification
4-20mA 1KΩ Platinum
RTD 0-100°C
(32-212°F)		 ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
4-20mA 1KΩ Platinum
RTD Other Span		 ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
AcuTEMS-IM-C
Front-right angled view of the AcuTEMS IM immersion temperature sensor
Temperature
Output
Temperature
Sensor
Temperature
Accuracy
Probe Length
Enclosure
Certification
0-10VDC 1KΩ Platinum
RTD 0-100°C
(32-212°F		 ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE
0-10VDC 1KΩ Platinum
RTD Other Span		 ±0.2°C @ 25°C
(±0.36°F @ 77°F)		 2" (50.8mm)
4" (101.6mm)
6" (152.4mm)
Custom Length		 NEMA 4 /
IP65 Rated		 CE

AcuTEMS IM FAQs

What is the maximum flow velocity the thermowell can withstand?

The flow velocity that the thermowell can withstand is related to its insertion depth. The exact relation between insertion depth and max velocity is listed in the table below:

Material Media 2.00” (50.8mm) 4” (101.6mm) 6” (152.4mm)
304SS Water <115ft/s (35m/s) <40ft/s (12m/s) <23ft/s (7m/s)

Applications with excessive flow velocity, pressure, or temperature requires specialized thermowell designed for those specific conditions.