Toho Electronics TSM-H1 Operation Manual

Humidity-Voltage Converting Module TSM-H1

1. Introduction

Thank you for purchasing this Relative Humidity-Voltage Converting Module TSM-H1. With the use of humidity sensor
elements TD-A and TI-A, the product outputs relative humidity with 0 to 1V DC by simply connecting it to the power
supply. Durability, high-speed response, and low hysteresis are some of the main characteristics of this product.

2. Wiring and Shape

The wiring diagram of TSM-H1 is shown in Fig. 1. The shape of TSM-H1 is shown in Fig. 2. If the temperature sensor
is selected as an option, its resistance value will be outputted with three wires.

3. Specifications

Specifications of TSM-H1 are the following:
Usable Temperature Range
Usable Humidity Range
Relative Humidity Meter Measuring Accuracy : ±3％RH (5 to 95％RH at 25℃)
Response Time (Humidity)
Power Voltage
Output (Humidity)
(Temperature: Optional): Resistance (Three wires)
Dimensions
Cable Length
Weight
Humidity Sensor Element
Temperature Sensor Element (Optional): Pt100ΩCRZ2005, JIS class A

4. Chemical Resistance

Using TSM-H1 under an environment that contains an active gas, such as organic gas, may cause it to output an
abnormal value depending on the type and density of the active gas.

5. Replacement of Humidity Sensor (TSM-H1-TIA)

In case an abnormal value is outputted because of trouble in the humidity sensor, replace the humidity sensor
element in accordance with the following procedures:
(1) Remove the sensor's protective cap by turning it. Remove the humidity sensor element.
(2) Insert the new sensor and then attach the sensor's protective cap. Use a tweezer to avoid touching the sensor
surface.
＊No need to adjust the circuit after the replacement of the element.

6. Usage Precautions

Please take note of the following upon using TSM-H1:
(1) Do not apply strong force on the product.
(2) Do not expose the product to direct sunlight.
(3) Do not expose the sensor and circuit sections to liquids such as water.
(4) Do not touch the humidity sensor section.
(5) Use the product under proper power voltage.
(6) Do not short-circuit the output.
(7) Do not wipe the product with an organic solvent.
Operation Manual
: - 25 to +80℃
: 0 to 100％ RH
: 15 sec. (If the membrane filter is attached: 90% response)
: 5 to 16V DC
: 0 to 1V DC (Output impedance 100Ω)
:φ14mm × 80mm (Excluding cable)
: 1,000mm (Standard)
: Approx. 10g (Excluding cable)
:TD-A (Compatible humidity sensor element TI-A for TSM-H1-TIA)