Hygro Thermograph

Long term continuous recording of Temperature and Humidity
on paper and SD recorder

Features

  • SD card recorder (option )
  • Record temperature and humidity on same chart
  • Long ternm - 6 months continuous recording with batteries(LR20 X 4)°F)
  • User can recalibrate
  • Dew Point measurement
  • Large LCD digital display
  • Rugged molded case

 

Relative Humidity Measurement
Relative Humidity is the measure of the amount of water vapor in the air at a particular temperature, compared with the total amount of water vapor the air can hold at that temperature. The dew point is defined as the lower temperature to which air must be cooled in order for condensation to occur. The dew point is dependent on the concentration of water vapor present, and therefore on the relative humidity. These instruments will record both the humidity and dew point.
     The Sekonic Thermo-Hygrographs  are designed for long term recording from local or remote sensors. The ST-50 has a single Humidity/Temperature sensor.
The ST series thermographs are ideal for monitoring the environment in a wide range of applications and industries including food, pharmaceutical, semiconductor, chemical, museums, printing, paper mills, film production, hospitals warehousing and more.

Applications:

  • R&D
  • Production control
  • Quality control
  • Field monitoring
  • Laboratories
  • Storage control
  • Pharmaceutical industy
  • Food processing
  • chemical industry
  • Museum/fine arts gallery

Specification of ST series Hygro-Thermograph Monitors


The ST-50 is designed for long term recording. The table below shows the recording time at different chart speeds and the associated battery life
Chart Speed Recording Period Battery life
2.5 mm/hr 6 months 3 months
5 mm/hr 3 months 3 months
10 mm/hr 1.5 months 1.5 months
20 mm/hr 20 days 20 days

Model Model ST-50A and ST50M
Measurement methods Temp: semiconductor sensor Humidity: High molecular electrostatic cpacity sensor
Measurement ranges

Temp: -20 to 50 C/ -4 to 122 F
-20 to 80 C / -4 to 176 F (with sensor extension cable)
Humidity: 20 to 90% RH(no condensation) ,
0 to 100%RH (with sensor extension cable, no condensation)

Display (LCD) Resolution:0.1*C / 0.1* F 0.1%RH
Temp: -20 to 80 C / -4 to 176 F
Humidity: 0 to 100% RH
Dew Point: (-80 to 80 C/ -112 to 176 F)
Absolute Humidity: (0 to 290g/m)
Time: Year, month, date, time (24 hours)
LCD Display:Baterry checker, alarm, chart speed, setup mode, etc
Recording (chart form)

Chart paper: Z-Fold Type, 12m / 39.37feet(Length)113mm / 4.45inch(Width)

Working width: 100mm(3.94inch)for record both Temperature and Humidity

Feeding:Sprocket

Feeding accuracy: ± 3mm / 0.12inch(at 12m / 39.37 feet. Long Recording)

Accuracy

Temp: ±1.0 * C/ ±1.8* F at 0 to 50* C / 32 to 122 *F

Humidity:± 3 %RH (at 25* C / 77* F) (Accuracy Guarantee Range on Humidity is 10 to 90%RH)

Calibration Temp: 1 point
Humidity: 1 or 2 point
Recording Range Temp:
1) -20 to 80* C / -4 to 176* F
2) 0 to 50* C / 32 to 122* F
3) +/- 10* C, 25*C, 25* F, or 50* F
Humidity: 1) 0 to 100%RH 2)+/- 10% RH or 25% Rh
Storage SD card (128MB to 2GB) , Max 16 months (recorded per 1 minutes)
Environmental Conditions Ambient Temp: -20 to 50* C / -4 to 122* F Humidity: 20 to 90% RH (no condensation)
Dimensions 11.8 x 9.6 x 4.1 inch , 2.1kg 4.6lbs
Chart Paper Z fold chart paper 100mm wide, 12 meters long
Alarms high and low alarms for temperature and humidity
Alarm Indicator flashing LCD
Power AC Adaptor 120VAC or 230 VAC
or 4 x LR20 1.5 volts

Ordering Information Price $US 
Order Online 
 order online
Model ST50A Includes one temp/RH sensor, meter, manual, 1 red, 1 blue fiber tip pen, 1 chart paper and batteries $995.00   
Model ST50M Includes one temp/RH sensor, meter, manual, 1 red, 1 blue fiber tip pen, 1 chart paper and batteries and built in SD Flash card recorder $1180.00 order online
Accessories ST-50  
HE12 Chart paper Z fold 5 packs - each pack 12 m $110.00 order online
HE13 Fiber tip pens 2 each blue and red $95.00 order online
Accessories  
HE04 Sensor extension cable 5 m $110.00  
HE05 Sensor extension cable 20 m $220.00  
HE06 Sensor extension cable 50 m $540.00  


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