Ampro Corporation Auto Power Off, Low Battery Condition, Wet Bulb Temperature Readings TH-3

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Dew Point and Wet Bulb Temperature (THWD-3 only) Operation
DP WB

Dew Point and Wet Bulb Temperature (THWD-3 only) Operation

The Meter displays ambient temperature when first turned on. To

display dew point (DP) temperature, press DP WB once. Press DP WB again

to switch to wet bulb (WB) temperature. Pressing Auto Power OffLow Battery Condition a third time returns the Meter to ambient temperature. The display indicates when dew point and wet bulb temperatures are selected.

Auto Power Off

By default, when the meter is powered on, it is in the auto power off mode. The meter will power itself off after 30 minutes if no key operation is performed. To disable the auto power off feature, press and hold the �button and then power on the meter, The auto power off symbol will disappear to indicate that auto power off is disabled.

Low Battery Condition

When the battery voltage is under proper operation requirement, the

symbol displays on the LCD and the battery needs to be replaced.

Wet Bulb Temperature Readings (TH-3)

Occasionally the Wet Bulb temperature is required. Use the following procedure and your TH-3 to obtain the wet bulb temperature.

1.Determine RH% condition with the TH-3.

2.Determine temperature (dry-bulb) with the TH-3.

3.Locate dry bulb (DB) temperature line on the Psychrometric chart (vertical line across the bottom of the chart).

4.Locate relative humidity (RH) line on the chart (curved line across the chart).

5.Find the intersection of the DB and RH lines on the chart.

6.Draw a diagonal line, starting at your intersectioin point, until the Wet Bulb (WB) point is determined. (The wet bulb temperature line is at the outmost curve of the chart).

For example, locate the DB temperature of 78 °F on the Psychrometer chart. Locate the RH conditions of 50% RH on the chart. Draw a diagonal line up to the 65 °F WB point.

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Contents Manual de uso THWD-3 and TH-3 Relative Humidity and Temperature MetersPage English THWD-3 and TH-3 Relative Humidity and Temperature MetersPower-Up ContentsRelative Humidity Temperature Meters Safety InformationSymbols Used in this Manual Safety InformationData-Hold Operation Power-UpOperating Instructions Selecting Temperature UnitsDew Point and Wet Bulb Temperature THWD-3 only Operation Auto Power OffLow Battery Condition Wet Bulb Temperature Readings TH-3DRY BULB TEMPERATURE F Psychrometric ChartRATIO Lbv/Lba Repair Limited Warranty and Limitation of LiabilityIn-Warranty Repairs and Replacement - All Countries Specifications Dew Point Temperature THWD-3 Wet Bulb TemperaturePage French FrançaisIntroduction Table des matièresConsignes de sécurité Symboles utilisés dans ce manuelMaintien des données affichées HOLD Consignes d’utilisationMise sous tension Sélection des unités de températureEtat de pile faible Arrêt automatiqueLectures de température humide TH-3 7PJFIVNJEF Graphique psychrométrique5&.1­3563&1370*&4$&Ųų 569%6.*%*5­Réparation Limites de garantie et de responsabilitéRemplacements et réparations sous garantie - Tous pays Caractéristiques techniques Température humide THWD-3Température de point de rosée German DeutschEinleitung InhaltSicherheitsinformationen Symbole in diesem HandbuchDatenhaltefunktion HOLD BedienungsanweisungenEinschalten Auswählen der TemperatureinheitTaupunkt und Feuchtkugeltemperatur nur THWD-3 Automatische AbschaltungSchwache Batterie Feuchtkugeltemperatur-Messungen TH-3530$,&/5&.1&3563 Psychrometer-Diagramm&6$5*,&*547&3¨-5/*4 Reparatur Beschränkte Gewährleistung und HaftungsbeschränkungGarantiereparaturen oder -austausch - alle Länder Technische Daten Taupunkttemperatur THWD-3 FeuchtkugeltemperaturAuflösung Italian ItalianoIndice Simboli adoperati nel presente manuale Informazioni sulla sicurezzaOperazione Hold Tenuta dei dati Istruzioni per l’usoAccensione Selezione delle unità di temperaturaPila scarica Spegnimento automaticoMisure di temperatura a bulbo umido TH-3 5&.1&3563#6-#04&$$0  Diagramma psicrometrico31103506.*%*5 Riparazioni Garanzia limitata e limitazione di responsabilitàSostituzioni e riparazioni in garanzia - Tutti i Paesi Dati tecnici Tempo di risposta al 90% del valore finale, in aria calma 10 s Misure di temperatura del punto di rugiadaRisoluzione 0,1 C o 0,1 FSpanish EspañolIntroducción ContenidoSímbolos utilizados en este manual Información sobre seguridadOperación en el modo Data-Hold Retención de datos Instrucciones de operaciónEncendido Selección de las unidades de temperaturaCondición de batería con poca carga Apagado automático1. Determine la condición de HR % con el medidor TH-3 5&.1&3563%&#6-#04&$0 Gráfico psicrométrico±/%*$&%&¼.&%% Reparación Garantía limitada y Limitación de responsabilidadReparaciones y reemplazos cubiertos por la garantía todos los países Especificaciones Temperatura del punto de condensación THWD-3 Temperatura de bulbo húmedoResolución Swedish SvenskaInledning InnehållSäkerhetsinformation Symboler som används i denna handbokAnvändning av Data-Hold BruksanvisningarStart Välja temperaturenheterAnvändning av daggpunkt och våttemperatur endast THWD-3 Automatisk avstängningLåg batteriladdning Avläsning av våttemperatur TH-35PSSUFNQFSBUVS Psykrometriskt diagram656,5*&54¸3ª--/% Reparation Begränsad garanti och begränsning av ansvarReparationer och utbyten under garanti - Alla länder Specifikationer Daggpunktstemperatur VåttemperaturUpplösning