TERACOM TSM400-1-TH 1 Wire Temperature and Humidity Sensor User Manual

June 3, 2024
TERACOM

TERACOM TSM400-1-TH 1 Wire Temperature and Humidity Sensor

Short description

TSM400-1-TH is a temperature and humidity sensor that supports the 1-Wire protocol. A unique capacitive element is used for measuring relative humidity while the temperature is measured by a band gap sensor. Both sensors are seamlessly coupled to a 12-bit analog to digital converter. This results in superior signal quality. The TSM400-4-TH sensor is housed in a slim plastic enclosure. The bottom part of the enclosure is suitable for installation on standard flush-mounted/cavity wall boxes ø68mm, with installation openings on 61 mm.

Features

  • LED indicator for status of communication
  • Excellent long-term stability
  • Firmware update with Teracom controller via the 1-Wire interface

Applications

  • Environmental quality monitoring and assessment for offices.
  • Humidity and temperature monitoring in building management systems.
  • Smart ventilation systems.

Specifications

  • Physical characteristics
    Dimensions: 81 x 81 x 30 mm
    Weight: 66 g

  • Environmental limits

    • Operating temperature range: -20 to 60°C
    • Operating relative humidity range: 5 to 95% (non-condensing)
    • Storage temperature range: -20 to 60°C
    • Storage relative humidity range: 5 to 95% (non-condensing)
    • Ingress protection: IP20
  • Power requirements
    Operating voltage range (including -15/+20% according to IEC 62368-1): 4.5 to 26 VDC Current consumption: 5 mA@5VDC

  • Humidity measurements

    • Accuracy (min): ±3.0 %RH (in 20 to 80 %RH range)
    • Accuracy (max): ±5.0 %RH (in 5 to 95 %RH range)
    • Resolution: 0.1 %RH
    • Recommended operating range is 20% to 80% RH (non-condensing) over –10 °C to 60 °C
      Prolonged operation beyond these ranges may result in a shift of sensor reading, with slow recovery time.
  • Temperature measurements

    • Accuracy (min): ±0.4 °C (in -10 to +60°C range)
    • Accuracy (max): ±0.6 °C (in -20 to +60°C range)
    • Resolution: 0.1 °C
  • Warranty
    Warranty period: 3 years

Pinout

TERACOM TSM400-1-TH 1 Wire Temperature and Humidity Sensor-
FIG2

Installation

It is strongly recommended to use UTP/FTP cables and daisy-chained (linear) topology for multiple sensors and keep the total cable length up to 30 meters.

TERACOM TSM400-1-TH 1 Wire Temperature and Humidity Sensor-
FIG3

“Star” topology can be used only as a last resort for up to 4 sensors and a total cable length of up to 10 meters.

Status indicator

The status of the device is shown by a single LED, located inside the box:

  • If the LED blinks for a period of 1 second, the sensor works properly;
  • If the LED blinks for a period of 3 seconds, there isn‘t communication with the controller;
  • If the LED doesn’t blink, there isn’t a power supply.

Installation tips

The location and the mounting position of sensors have a direct effect on the accuracy of the measurements. The tips below will ensure good measuring results:

  • The sensor shall be installed about 1.2-1.4 m above the floor;
  • To avoid solar radiation, the sensor should not be installed next to windows or directly in the sunlight;
  • The sensors shall be installed in a place with sufficient air circulation.
    1- Wire is a registered trademark of Maxim Integrated Products, Inc. It is strongly recommended to read Maxim’s 1-Wire tips at https://teracomsystems.com/wp-content/uploads/AN148.pdf .
    TSM400-1-TH sensor is intended for installation on a cavity wall box with 68mm diameter and 61 mm screw spacing.

Firmware update

The firmware of the sensor can be updated with any Teracom controller which supports a 1-Wire interface. For more details ask your dealer.

Recycling

Recycle all applicable material.
Do not dispose of regular household refuse.

TSM400-1-TH_R1.0 – September 2022

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