Triplett RHT60 User manual

User Manual

RHT60

Precision Psychrometer

5 Commonwealth Ave5 Commonwealth Ave

Woburn, MA 01801Woburn, MA 01801

Phone 781-665-1400Phone 781-665-1400

TollToll Free 1-800-517-8431Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

Introduction

Congratulations on your purchase of the Triplett Model RHT60 Hygro-

Thermometer with Wet Bulb and Dew Point.. This device measures

Humidity, Air Temperature, Dew Point temperature and Wet Bulb

temperature. Advanced features include Data Hold, Auto Power Off, and

MAX/MIN reading

Meter Description

1. Humidity and Temperature Sensor

2. LCD Display

3. Power ON/OFF Button

4. MIN/MAX Button

5. °F/°C/WBT (Wet Bulb)/Dew Point button

6. HOLD/Backlight Button

Note: The battery compartment is located on the rear of the

instrument

Display Description

1. Relative Humidity %

2. Dew Point

3. Wet Bulb

4. °F/°C

5. Temp/Wet Buld/ Dew Point Display

6. Maximum

7. Minimum

8. Low Battery Indicator

9. Hold

10. RH% Measurement

11. Auto Power OFF Indicator

Operation

Power

Press the power button( ) to turn power on or off

Taking measurements

1. Hold the probe in the area to be

tested.

2. Allow adequate time for readings to

stabilize.

3. The Relative Humidity measurement

appears in the top display.

4. Pressing the °F/°C/WBT/Dew Point

button

toggles the lower display between

Temperature (°F), Temperature (°C), Dew Point

(°C), Dew Point (°F), Wet Bulb (°C) and Wet Bulb

(°F).

Dew Point measurements

1. To select the Dew Point

measurement, press the

°F/°C/WBT/Dew Point button until

DEWPOINT (°F or °C) appears in

the lower right.

2. Dew Point temperature is now

displayed.

Wet Bulb Measurements

1. To select the Dew Point measurement,

press the °F/°C/WBT/Dew Point button

until WETBULB (°F or °C) appears in the

lower right.

2. Wet Bulb temperature is now displayed.

Temperature measurements

1. To select the

temperature

measurement,

press the

°F/°C/WBT/Dew

Point button

until °C or °F appears in the lower right.

2. Temperature is now

displayed

Data Hold

Press the button to momentarily

freeze the displayed readings. HOLD will

appear on the upper left hand side of the

display. Press the again to return to

normal operation.

Minimum (MIN) Maximum (MAX) Function

The MIN/MAX mode allows the user to view only

the lowest (MIN) or highest (MAX) readings.

Press the MAX/MIN button once and “MAX”

appears on the display. The LCD is now

displaying the maximum humidity in the top

display and the maximum reading of the selected

parameter in the bottom display. The display will

not change until a higher reading is registered.

Press the MAX/MIN button again and

“MIN”appears on the display.

The LCD is now displaying the minimum humidity and the minimum second

reading in the bottom display. The display will not change until a lower

reading is registered.

To exit the MIN/MAX mode, press and hold the MIN/MAX button for 2

seconds until the “MAX” or “MIN” icon disappears.

Note: Readings are automatically reset when switching from one

display to the next (MAX to MIN).

Backlight

Press and hold the light button ( ) until the backlight comes on. To

turn thebacklight off press and hold the light button ( ) until the

backlight turns off.

Automatic Power OFF

The meter has a default setting that automatically shuts the meter off after

10 minutes (indicated by the symbol on the display. This battery saving

feature can be disabled. To disable the auto power off function, simply

press and hold the hold button

while powering on. The symbol will not appear when auto power off

has been disabled. The meter will revert to the default auto-off mode when

powered off.

Maintenance

Cleaning and storage

o The meter should be cleaned with a damp cloth and mild

detergent when necessary. Do not use solvents or abrasives.

p Store the meter in an area with moderate temperature and

humidity (refer to the operating and storage range in the

specifications chart earlier in this manual).

Battery Replacement

When the battery power falls low, the battery symbol will

appear on the LCD. Replace the 9 Volt battery by removing

the Philips head screw holding the rear battery compartment

cover to access the battery compartment. Ensure that the

compartment cover is securely fastened when finished.

You, as the end user, are legally bound (Battery ordinance)

to return all used batteries and accumulators; disposal in the

household garbage is prohibited!

You can hand over your used batteries / accumulators

at collection points in your community or wherever

batteries / accumulators are sold!

Disposal: Follow the valid legal stipulations in respect of the

disposal of the device at the end of its lifecycle

Specifications

Function

Range and Resolution

Accuracy

Humidity

0.0 to 10.0%RH

±3%RH

10.0 to 90.0%RH

±2%RH

90.0 to 100.0%RH

±3%RH

Temperature

-30.0 to -20.0oC

+/-0.9°F (+/-0.5°C) (at

25°C)

+/-1.5°F (+/-0.8°C) at all

other ranges

-22.0 to –4.0

-19.9 to 70.0

-3.9 to 158.0

70.1 to 100.0

158.1 to 199.0

Wet Bulb

0 to 80°C (32 to 176°F)

Calculated from RH and

air

Dew Point

-30 to 100°C (-22 to 199°F)

temperature

measurements

Display Dual LCD

Response Time: <30 seconds (90% of final value in moving air)

Operating Conditions 32 to 104oF (0 to 40oC); < 80% RH non-

condensing

Storage Conditions -40 to 185oF (-40 to 85oC); <99% RH non-

condensing

Power Supply 9 Volt battery

Battery Life Approx. 24 hours

Dimensions / Weight 8.9 x 1.7 x 1.3” (225 x 45 x 34mm); 7.0 oz

(200g)

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

Test Equipment Depot -800.517.8431 -5 Commonwealth Ave, Woburn, MA 01801

TestEquipmentDepot.com

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