---
lang: "en"
title: "TST200 1-wire PT100 sensor"
sku: "TST200"
canonical_url: "https://shop.marcomweb.it/en/modbus/tst200-1-wire-pt100-sensor"
brand: "MARCOM S.r.l."
end_of_life: "false"
---

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TST200 is a 1-wire Pt100 transmitter for accurate wide-range temperature monitoring from -200 to +850 °C.

TST200 is a Pt100 transmitter with a 1-wire interface. It is designed to connect Pt100 temperature sensors to TCW2xx and TCG1xx controllers to build temperature monitoring systems in the range from -200 to +850 °C (-328 to 1560 °F). The 1-wire Pt100 transmitter incorporates a 24-bit precision analog-to-digital converter (ADC) and additional digital signal processing to ensure accurate and drift-free performance.

RTD (Resistance Temperature Detector) commonly known as Pt100 is one of the most popular temperature sensors used in the industry. In principle, the sensor can be connected with 2, 3, or 4 wires. The more wires used, the more accurate the measurement. The difference becomes significant at longer distances. A 4-wire connection is highly recommended.

TST200 has two RJ11 connectors for simple daisy-chaining of the 1-wire bus.

## Technical Specifications

- Wide measured temperature range from -200 to +850 °C
- 24-bit measurement conversion
- Factory calibrated output data
- Supports 3 and 4-wire sensor connections
- Very low current consumption
- No external power supply - powered via the interface
- Supply voltage range (1-Wire bus): 3.5 to 5.5 V
- Maximum supply current (1-Wire bus): 6 mA
- Measurement temperature range: -200 to +850 °C
- Accuracy: 0.2 °C ± 0.05% of reading
- Operating temperature range: -20 to +55 °C
- Operating relative humidity range: 5 to 85 %RH (non-condensing)
- Dimensions: 85 x 35.1 x 23.5 mm

## Applications

- Accurate temperature monitoring for industrial processes
- Temperature monitoring and control in ovens
- Precision heating, ventilation, and air conditioning (HVAC) systems
- Temperature monitoring in beverage and food warehouses
- Accurate temperature monitoring in pharmaceutical warehouses
- Temperature monitoring in building management systems.

### Can be used with:

## Related products

- [TCW241 Ethernet Module with 4 DI, 4 AI and 4 DO relays](https://shop.marcomweb.it/en/modbus/tcw241-ethernet-module-with-4-di-4-ai-and-4-do-relays) — 195,20 €
- [TCW220 Ethernet Datalogger](https://shop.marcomweb.it/en/modbus/tcw220-ethernet-datalogger) — 161,20 €
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Source: https://shop.marcomweb.it/en/modbus/tst200-1-wire-pt100-sensor

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.