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Precision Thermo-Humidity Logger


Easy temperature and humidity control with an SD Card

Sensor head

Model ZN-THS17-S ZN-THS17C-S * ZN-THS11-S ZN-THS11C-S *
Temperature Measurement range 0 to 60°C -25 to 60°C
Measurement precision ±0.3°C (at 25°C)
Resolution 0.1°C
Measurement range 20 to 85% 0 to 99%
Measurement precision ±2.5% (at 25°C, 10 to 85%)
Resolution 0.001
Weight (packaged) Approx. 300 g
Accessories Mounting screw (M3 x 8) x 1
Caps to secure cable
(one for each, front and rear)
Mounting screw (M3 x 8) x 1

* Please choose this form when you buy it with the calibration certificate.

  • 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 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 a dry, room temperature environment before use.
  • When using the ZN-THS1[][]-S under conditions with temperatures 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 an environment into which organic chemistry material disperses.


Model ZN-THX11-SA
Sensor that can be connected Thermo-Humidity Sensor Head (ZN-THS1[][]-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 Normal mode, sleep mode *1
Recording mode Continue *2, ring *3
Alarm signal output *4 Output to photocoupler (External power supply: 12 to 24 VDC, Load current: Max. 45
mA) Alarm hold setting is possible. *5
Internal storage device Internal memory: Approx. 8,500 data items
External storage device SD card (to save measured values and to save/read set values),
Recommended SD card: HMC-SD291 (manufactured by OMRON) *9
Power supply voltage DC input: 24 VDC±10%
Battery: 2 AAA batteries *5
Battery life *5 Approx. 1 year *6 (sleep 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, Startup1 Guide, Alarm output connector *7,
DC cable (straight type)

*1 Power saving mode. The indicator is always OFF in default setting. (Turns ON with button operation.)
*2 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.)
*3 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.)
*4 An alarm is shown when exceeding the upper limit value or lower limit value that has been set in threshold setting
*5 Nickel hydride battery and alkaline battery can be used. Manganese batteries cannot be used.
*6 Battery life differs depending on measurement environment, sampling, operating mode, battery type, or performance.
*7 The connector is type XW4B-02B1-H1, made by OMRON.
*8 If you use an SD card from another manufacturer, use an SDHC Class 4 or higher card.
      (You must confirm the operation of the SD card yourself.)