Velleman DVM321 Manual De Instrucciones

DVM321 – DIGITAL HUMIDITY & TEMPERATURE METER
1. Introduction
Thank you for buying the DVM321. Read this manual carefully before bringing it into service.
2. Specifications
Display ....................................LCD with backlight
Sensor type:
Humidity................................precision capacitance sensor
Temperature .........................thermistor (head) and type K thermocouple
Measurement Range:
Humidity................................0%RH ~ 100%RH
Temperature .........................-20°C ~ 60°C (-4 ~ 140°F)
Accuracy:
Range 5% ~95% RH.............± 3.5% RH (at 23°C ± 5°)
Range -20°C ~ 60°C ............± 2.5°C
Range -4°F ~ 140°F .............± 3.5°F
Response time ........................180s
Sample rate.............................2.5 times per second
Polarity ....................................automatic, with negative polarity indication (-)
Overload.................................."OL" indication
Resolution ...............................0.1% RH, 0.1°C / 0.1°F
Operating conditions ...............0°C ~50°C (32-122°F) ; < 80% RH non-condensing
Storage conditions...................-10°C ~60°C (14-140°F) ; < 80% RH non-condensing
Auto power off .........................DVM321 shuts down after approx. 15 minutes of inactivity
Battery.....................................9V battery
3. Parts & Keys
1. Measurement head
2. LCD display with %RH, °F and °C indications,
low battery indication ("BAT" + icon), MIN/MAX + HOLD indications
3. MAX/MIN/DATA HOLD key: press short to switch between MIN, MAX and
normal recording. Hold the button for 2 seconds to switch DATA HOLD on or off.
4. %RH, °C, °F function switch key
5. ON/OFF key
6. Backlight button (switch backlight on/off)
7. Battery compartment
4. Operating Instructions
1. Hold the DVM321 in the area to be tested and allow adequate time for the readings to stabilize.
2. Press the function switch (fig. above #4) to select %RH, °C or °F. Set the MIN or MAX function (#3) if needed.
3. Read the measurement results.
• Do not immerse the measuring head in liquid ; it is intended for use in air only.
• Do not expose the humidity sensor to direct sunlight. Do not touch or manipulate the humidity sensor.
• If the low battery indication appears, the battery is too weak for adequate measurements. Replace it.
The information in this manual is subject to change without prior notice.
DVM321 1 VELLEMAN