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Thermo-Humidity Station


Precision measurement of temperature and humidity around production lines and equipment.

Sensor head

Model ZN-THS11-S
(Sensor head: 1.5 m type)
(Sensor head: Anchored type)
Temperature Measurement range -25 to +60°C 0 to 60°C
Measurement precision ±0.3°C (at 25°C)
Resolution 0.1°C
Zero point 0% to 99% 20% to 85%
Span ±2.5% (at 25°C, 10 to 85%)
Resolution 0.1%
Weight (packaged) Approx. 300 g
Accessories Instruction sheet
Mounting screw (M3 x 8) x 1
Instruction sheet
Mounting screw (M3 x 8) x 1
Caps to secure cable

• As performance may deteriorate through the adhesion of impurities or contaminants in the environment on the sensor
    surface, calibration is recommended once a year.
• When ZN-THS1 -S is exposed over a long period of time at a high humidity of 80% or higher, the humidity
    measurement value may be offset.
    In that case, expose the product at room temperature and humidity for 24 hours prior to use.
• When ZN-THS1[][]-S is transferred rapidly between the places where temperature difference is large, condensation
    may occur on the sensor surface.
    In that case, the ZN-THS1[][]-S may not work properly.
    When the product becomes wet due to condensation, allow the product to dry in dry, room temperature environment
      before use.
• When using the ZN-THS1[][]-S under conditions with temperature of -20°C or less or with humidity of 90% or more,
     acceleration of sensor deterioration may occur.
• To avoid deterioration of sensor, avoid storing the product under high temperature and high humidity for a long period
     of time.
• Please don’t use the product in the environment to which organic chemistry material disperses.


Model ZN-THX21-SA
Sensor that can be connected Thermo-Humidity Sensor Head (ZN-THS[][]-S)
Display LCD 7-segment 5-digit 2-step display, auxiliary information indicator display
Measurement interval 10 s, 20 s, 30 s, 1 min, 2 min, 5 min, 10 min, 20 min, 30 min, 1 h
Calculation function Instantaneous value, maximum value, minimum value, average value
Operating mode Network connection mode, sleep mode *1
air particle sensor (ZN-PD[][]-S[]) connection mode *2
Recording mode Continue *3, ring *4
Alarm signal output Output to photocoupler (External power supply: 12 to 24 VDC, Load current: Max.
45 mA) Alarm hold setting is possible. *5
Communications interface Ethernet (10BASE-T, 100BASE-TX)
Communications protocol Socket (TCP), original protocol
Internal storage device Internal memory: Approx. 8,500 data items *6
External storage device SD card (to save measured values and to save/read set values),
Recommended SD card: HMC-SD291 (manufactured by OMRON) ∗7
Power supply voltage DC input: 24 VDC ±10%
Battery: 2 AAA batteries *8
Battery life *9 Approx. 1 year *9 (sleep mode)
Approx. 2 hours *9 (Network connection mode, air particle sensor (ZN-PD[][]-SA)
connection mode)
Measurement interval of 10 minutes (with 2 AAA nickel metal hydride batteries,
with SD card not inserted)
Operating temperature range 0 to 60°C
Operating humidity range 20% to 85% (no condensation)
Weight (packaged) Approx. 500 g
Accessories Instruction Sheet, Startup Guide, DC cable (straight type), Ferrite core,
Alarm output connector ∗10

*1 Power saving mode. The indicator is always OFF in default setting. (Turns ON with button operation.)
      Network communications with host devices cannot be made.
*2 This mode makes one-to-one network connection with Air Particle Sensor (ZN-PD[][]-S[]) and enables logging of the
      particle count value and thermal data simultaneously to the SD card.
      Network communications with host devices cannot be made.
*3 Automatically writes data to the SD card when reaching the upper limit of the internal memory and keeps recording
      until the capacity limit of the SD card. If the SD card is not inserted when the internal memory reaches the upper
      limit, recording stops. (Data can be output to the SD card by pressing the button after inserting the SD card.)
*4 This mode always records the latest measured values for the upper limit of the internal memory. (When the
      measured values exceed the upper limit of the internal memory, the data items will be deleted beginning with the
      oldest data item.)
*5 An alarm is shown when exceeding the upper limit value or lower limit value that has been set in threshold setting
*6 Air particle sensor connection mode is excluded.
∗7 If you use an SD or SDHC card from another manufacturer, you will be able to temporarily read and write data.
      However, it may become impossible to recognize some cards during operation, and data may be lost.
      Please use the recommended SD card.
∗8 Nickel hydride battery and alkaline battery can be used. Manganese batteries cannot be used.
∗9 Battery life differs depending on measurement environment, sampling, operating mode, battery type or performance.
∗10 The connector is type XW4B-02B1-H1, made by OMRON.