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                                                RHT35-en-GB_V1.0   04/17 

Display (LCD) Description 

 

o

F

 

o

C

 

Temperature unit of measure as programmed by the user 

RH% 

Displayed when showing Relative Humidity reading  

T1

    

Represents the internal sensor (air) temperature  

H

  

 

High Alarm triggered 

L

  

 

Low Alarm triggered 

REC

  

 

REC

 flashes once per second when actively datalogging. When logger is 

programmed with a ‘Start Delay’, 

REC

 is displayed but does not flash until after 

the delay time has elapsed and the logging begins 

 

 Battery icon flashes once per second when battery level is critically low 

 

 

MX

 

 Displayed when the maximum recorded reading is selected with the MAX-MIN 

button 

MN

  

 Displayed when the minimum recorded reading is selected with the MAX-MIN 

button 

inHg 

Displayed when showing pressure in imperial units 

hpa 

Displayed when showing pressure in metric units 

LED Status Indicator Description 

The dual color (red/green) LED status indicator is located to the right of the LCD. 

 

Red (Alarm): Blinks red every 10 seconds in an alarm condition 

 

Green (Datalogging): Blinks green every 10 seconds while actively datalogging  

 

Green (PC connection): Glows steady green while establishing connection to PC 

Summary of Contents for RHT35

Page 1: ...USER MANUAL USB Multi Function Datalogger Model RHT35 Additional User Manual Translations available at www extech com ...

Page 2: ...start high low alarms bookmarking and password protection Automatically generate PDF and Microsoft Excel datalog reports High accuracy thermistor temperature sensor capacitive humidity sensor MEMS pressure sensor Compact light weight design Large LCD for easy viewing Dual color red and green LED status indicator for datalogger progress PC connection status and high low alarms Large memory capacity...

Page 3: ...talogger will not start unless it has been configured using the PDF Logger Configuration Tool exe program as described later in this user manual Maximum Minimum Reading button At any time short press to step through the highest MX and lowest MIN readings recorded in the current datalogging session Bookmark button Manually place a time stamped bookmark in the datalog report by pressing and holding ...

Page 4: ...ry icon flashes once per second when battery level is critically low MX Displayed when the maximum recorded reading is selected with the MAX MIN button MN Displayed when the minimum recorded reading is selected with the MAX MIN button inHg Displayed when showing pressure in imperial units hpa Displayed when showing pressure in metric units LED Status Indicator Description The dual color red green ...

Page 5: ...GE SELECTION 5 SAMPLING RATE Datalogger recording interval 6 START DELAY Delay period from when START is pressed and datalogging begins 7 UNIT Imperial or Metric unit selection 8 PASSWORD Select a 16 character password for tamper protection 9 COMPANY NAME 20 Character user label for inclusion in logging report 10 SAVE Press SAVE to confirm the configuration 11 CANCEL Abort the configuration 12 MAN...

Page 6: ...ult language is English select German French Italian Spanish or Portuguese as desired The generated logging report format will match the language selected 7 To review the User Manual click Manual to open the User Manual PDF file 8 The parameters needed to configure the datalogger for logging are defined below Refer to the earlier screen shot of the PDF Logger Configuration Tool window for referenc...

Page 7: ...perature RH or pressure For example if the temperature range is set to 2 0 8 0 oC when the measurement falls below 2oC or exceeds 8o C the LED will flash red every 10 seconds Note If an alarm occurs between two logging points the logged data will not show the alarm but the LED may still flash red every 10 seconds especially in Single Event alarm mode If desired use the Cumulative Alarm mode to min...

Page 8: ...ng To place a bookmark manually during datalogging press and hold the MARK button until the measured reading flashes 3 times Up to eight 8 bookmarks can be placed the bookmarks will appear in the logging report MAX MIN Readings Short press the MAX MIN button to step through the highest MX and lowest MN readings stored in memory Checking Battery Status At any time short press the MARK button to vie...

Page 9: ...a 0 60o C 5hPa 20 0o C all other ranges unspecified Logger Type Re usable Datalogger Capacity 16 000 humidity 16 000 temp 16 000 barometric pressure Sampling Intervals 30 seconds and 5 10 30 60 90 120 minutes Start Delay Time 0 5 30 45 60 90 120 minutes and 24 hours Alarm Ranges Temp 30 70o C 22 158o F Humidity 1 to 99 RH Alarm Delay inhibit 0 5 30 45 60 90 120 minutes Alarm Types Single Event Cum...

Page 10: ...ose of this instrument in household waste The user is obligated to take end of life devices to a designated collection point for the disposal of electrical and electronic equipment Battery Status Check To check the approximate number of days of battery life remaining short press the MARK button The display will show the number of days and the d for days XXd Cleaning Wipe the datalogger with a damp...

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