TRIPLETT RHT02 Hygro-Thermometer Pen User Manual

: June 6, 2024
: TRIPLETT

Table of Contents

TRIPLETT RHT02 Hygro-Thermometer Pen
Introduction
Features
Description
Operation
Troubleshooting Tips
Specifications
References
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Download This Manual (PDF format)

TRIPLETT RHT02 Hygro-Thermometer Pen

Introduction

Thanks for purchasing the Triplett RHT02/RHT05 Hygro-Thermometer Pen The models RHT02/RHT05 can measure Relative Humidity from 10% to 90% and Temperature from -4 to 140oF (-20 to 60oC). Advanced features include MIN/MAX Memory, Push-button Calibration, Display Hold, and Automatic Power Off. The model RHT05 adds Wet Bulb (Wb) and Dew Point (DP) calculated measurements.

Features

°F/°C switchable
Data Hold freezes the reading on the display
Min/Max records the highest and lowest readings
Auto power off with disable
Built-in Humidity calibration using optional calibration solutions
Includes CR2032 battery
1-year warranty

Description

METER DESCRIPTION

RH and Temperature Sensor
Function Button Area
LCD Display

FUNCTION BUTTONS

TRIPLETT RHT02 Hygro-Thermometer Pen fig3

LCD DISPAY

Operation

Power on the meter by pressing ON/OFF button. You will see a full display on the screen (though you might have seen “DP”,”WB” shown on the screen, however these icons are only available for RHT05 model) for one second, now the meter will start measuring the temperature and humidity and display both readings at the same time. Note: Make sure you have rotated the sensor cap for ready to measure.
“AIR” icon shows current environ-ment temperature and humidity.
The default setting of temperature display can be in F or C. You
can press F/C button to change the temperature display
Press MIN/MAX button , MIN appears on display. The LCD screen is now showing the minimum humidity and tem-perature readings in memory. Press MIN/MAX button again, MAX will show on the LCD screen. Press MIN/MAX button once again, it backs to the normal measurement.
To clear current MIN and MAX readings from memory, press and hold RESET button, now the meter reading turns to the normal mode and data in memory is clear now.
Press the hold button until “HLD” appears in display. The current reading is now being held and will not change until Hold function is cancelled. Press “HOLD” key to cancel HOLD function. Hold function can be used for Humidity and Temperature
Unit will turn itself off after 20 min. (Sleep mode).To override Auto Power Off function (Non-Sleep Mode), press ON/OFF ,HOLD keys simultaneously before powering on. Now the display shows “n” on the screen. When “n” appears then release ON/OFF button. Unit will now be in Non-sleep mode for long time operation purposes NOTE: For model RHT05 press “MODE” key to switch the mode of temp. display. When meter is in AIR temperature mode, press “MODE” to toggle between “AIR”, “DP”, and “WB” readings.

RH Calibration
NOTE: With optional calibration bottles or “know” humidity chambers the models RHT02/RHT05 can be self-calibrated at 33% and 75% following the procedure below

Turn off the meter, plug the meter probe into 32.8% salt bottle and press “ON/OFF+F/C” key more than one second to turn on the meter and enter Calibration mode.
You will see 3x.x% display on the LCD, after 60 minutes the flashing stops to indicate the finish of “3x.x%” calibration (with saving)
Move the meter probe to 75.3% and press “MN/MX” key more than one second to enter 7x.x% calibration.
Now “7x.x%” is flashing on the LCD.
Flashing will stop after 60 minutes, it means the whole calibration is completed

NOTES:

You can exit calibration without saving by pressing “ON/OFF” key
Auto power off is disabled in calibration mode.
For best accuracy results the calibration should be done in an environments temperature of 23+2°C
If the reading difference is not within 0.3% after calibration , it means the calibration is failed
RH Calibration solution lookup table ->

BATTERY REPLACEMENT

Turn off the meter and use a coin to open the battery cover.
Put the battery (CR2032) whose “+” faces out into the battery compartment and place the battery cover back and lock it with a coin

Troubleshooting Tips

POWER ON BUT NO DISPLAY

Make sure the time of pressing ”ON/ OFF” key is more than 300mS.
Check the battery is in place and make sure good contact and correct polarity.
Replace a new battery and try again.
Remove the battery. Press “ON/OFF” for 10 seconds. Install the battery and try again.

DISPLAY DISAPPEARS

Check whether the low battery indicator is displayed on before display off , if yes , please replace with a new battery.
Turn on the meter by pressing “ON/ OFF+HOLD” key to disable Auto Power Off function for a long time using.

CALIBRATION FAILURE

Check whether the low battery icon is displayed on before cabliration , if yes, please replace with a new battery and try again.
Make sure the good sealing when the meter probe plug into the salt bottle.
Make sure the free air temperature is within 23+2 C when calibration.

Specifications

| RHT02| RHT05
---|---|---
Air

Temperature

| -4 to 140°F (-20

to 60°C)

| -4 to 140°F (-20 to

60°C)

Accuracy| ±1.8°F/1°C| ±1.8°F/1°C
Relative

Humidity

| __

0 to 100%RH

| __

0 to 100%RH

__

Dimensions

| 6.9 x 1.7 x 0.6″

(175 x 42 x

16mm)

| __

6.9 x 1.7 x 0.6″ (175

x 42 x 16mm)

Weight| 1.9oz (55g)| 1.9oz (55g)

Warranty
Triplett / Jewell Instruments extends the following warranty to the original purchaser of these goods for use. Triplett warrants to the original purchaser for use that the products sold by it will be free from defects in workmanship and material for a period of (1) one year from the date of purchase. This warranty does not apply to any of our products which have been repaired or altered by unauthorized persons in any way or purchased from unauthorized distributors so as, in our sole judgment, to injure their stability or reliability, or which have been subject to misuse, abuse, misapplication, negligence, accident or which have had the serial numbers altered, defaced, or removed. Accessories, including batteries are not covered by this warranty
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