



FlexTop 2203 Temperature Transmitter
Baumer FlexTop 2203 is a compact 4 to 20 mA loop-powered temperature transmitter for thermocouple sensors. It supports sensor types B, J, K, N and S, offers configurable measuring range, cold junction compensation, error detection, damping and status indication, and is suitable for DIN B head mounting in industrial temperature measurement applications.
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A. Product Overview
Baumer FlexTop 2203 is an industrial temperature transmitter designed for thermocouple sensor applications. It converts thermocouple input signals into a standard 4 to 20 mA current output, making it suitable for connection with PLCs, indicators, controllers, recorders and monitoring systems.
The transmitter supports thermocouple sensor types B, J, K, N and S. It is designed for DIN B housing installation and comes with a compact 44 mm diameter and 19 mm height construction. The transmitter is embedded in silicone, which improves resistance against humid environments.
FlexTop 2203 can be configured using a PC with Baumer Flex-Program software and the FlexProgrammer 9701 configuration unit. Parameters such as TAG number, cold junction compensation, error detection level, measuring range, engineering unit, damping, offset and status indication can be configured as per application requirement.
Key features include:
- 4 to 20 mA loop-powered output
- Thermocouple input for B, J, K, N and S sensors
- Cold junction compensation
- Sensor error detection
- Configurable measuring range in degree Celsius or Fahrenheit
- PC-based configuration and datalogging
- Silicone embedded body for humid environments
- DIN B head mount design
- ATEX approval for hazardous area applications
- Excellent temperature stability
B. Working Principle
FlexTop 2203 works by receiving a low-level signal from a thermocouple sensor. A thermocouple generates a voltage signal based on the temperature difference between the measuring junction and the reference junction.
The transmitter reads this thermocouple signal and applies cold junction compensation to improve measurement accuracy. After processing the input signal, it converts the temperature value into a standard 4 to 20 mA current output.
The 4 to 20 mA signal is then sent to connected devices such as a PLC, digital indicator, controller, recorder or SCADA system. In a typical setup, 4 mA represents the lower end of the configured temperature range and 20 mA represents the upper end of the configured temperature range.
For example, the transmitter can be configured for a specific thermocouple type and temperature range. Once configured, it continuously measures the sensor input and transmits a proportional current signal for reliable industrial temperature monitoring.
C. Why It Is Used
Baumer FlexTop 2203 is used to convert thermocouple sensor signals into a reliable industrial output signal. Thermocouple signals are very small and cannot always be transmitted over long distances directly. The transmitter converts this weak signal into a strong 4 to 20 mA current signal, which is more stable and suitable for industrial automation systems.
It is used because it helps in:
- Accurate temperature signal conversion
- Long-distance signal transmission
- Easy integration with PLC, indicator and control systems
- Reducing signal noise and measurement errors
- Detecting sensor faults
- Configuring measuring range as per process requirement
- Monitoring high-temperature industrial processes
- Using thermocouple sensors in humid or harsh environments
- Installation in DIN B sensor heads
- Hazardous area temperature measurement where ATEX approval is required
This transmitter is suitable for applications where stable temperature monitoring, compact mounting and reliable output signal transmission are required.
D. Suitable Buyers
Baumer FlexTop 2203 is suitable for customers who need reliable thermocouple-based temperature measurement in industrial processes.
Suitable buyers include:
- Industrial automation companies
- Process control system integrators
- Panel builders
- OEM machine manufacturers
- Instrumentation engineers
- Maintenance teams
- Chemical plants
- Pharmaceutical plants
- Food and beverage processing plants
- Furnace and heat treatment industries
- Boiler and burner system manufacturers
- Power plants
- Oil and gas industries
- Water treatment plants
- HVAC and utility system suppliers
- Baumer sensor dealers and distributors
- Purchase teams looking for thermocouple temperature transmitters
FAQ
1. What is Baumer FlexTop 2203?
Baumer FlexTop 2203 is a 4 to 20 mA loop-powered temperature transmitter used with thermocouple sensors. It converts thermocouple input signals into a standard current output for industrial monitoring and control systems.
2. Which sensor types are supported by FlexTop 2203?
FlexTop 2203 supports thermocouple sensor types B, J, K, N and S.
3. What is the output signal of FlexTop 2203?
The output signal is 4 to 20 mA, 2-wire loop-powered output.
4. Where is FlexTop 2203 installed?
FlexTop 2203 is designed for DIN B head mount installation. It fits inside a DIN B sensor housing and has a 6 mm center hole for quick sensor replacement.
5. Can Baumer FlexTop 2203 be configured?
Yes, FlexTop 2203 can be configured using Baumer Flex-Program software and FlexProgrammer 9701. Parameters like TAG number, measuring range, cold junction compensation, damping, offset and status indication can be set.
6. What is cold junction compensation in FlexTop 2203?
Cold junction compensation is used to improve thermocouple measurement accuracy by compensating for reference junction temperature changes. FlexTop 2203 supports internal, external and fixed cold junction compensation.
7. Is FlexTop 2203 suitable for humid environments?
Yes, FlexTop 2203 is embedded in silicone, which makes it resistant to humid environments.
8. Does FlexTop 2203 have sensor error detection?
Yes, FlexTop 2203 includes sensor error detection, which helps identify faults in the connected thermocouple sensor circuit.
9. Is Baumer FlexTop 2203 suitable for hazardous areas?
Yes, FlexTop 2203 has Ex ia IIC T5/T6 and ATEX II 1G approval, making it suitable for specific hazardous area applications when installed as per required safety standards.
10. What industries use FlexTop 2203 temperature transmitter?
FlexTop 2203 is used in chemical plants, pharmaceutical plants, food processing, heat treatment, furnaces, boilers, power plants, HVAC systems, automation panels and other industrial temperature measurement applications.
11. Why should I use a temperature transmitter instead of connecting the thermocouple directly?
A temperature transmitter converts the small thermocouple voltage signal into a stable 4 to 20 mA signal. This improves signal transmission, reduces noise, supports long-distance wiring and makes the signal easier to use with PLCs and controllers.
12. Is Baumer FlexTop 2203 programmable for different temperature ranges?
Yes, the measuring range and engineering unit can be configured as per application requirement, depending on the selected thermocouple type and process temperature range.




