UV254SD USER’S MANUAL UVA AND UVC LIGHT METER WITH DATALOGGING SD CARD Please read this manual carefully and thoroughly before using this product.
TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . 4 – 9 What’s in the case . . . . . . . . . . . . . . . . . . . . . . . 4 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 6 Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . 7 Holding and Storing Measurements. . . . . . . . . .
INTRODUCTION Thank you for purchasing General Tools & Instruments’ UV254SD UVA and UVC Light Meter with Datalogging SD Card. Please read this user’s manual carefully and thoroughly before using the instrument. Many industrial and commercial applications require or can benefit from measurement of the intensity of UVA and/or UVC light.
OPERATING INSTRUCTIONS WHAT’S IN THE CASE The UV254SD comes fully assembled in a carrying case along with a UVA probe, a UVC probe, a 2 GB SD memory card and this user’s manual. Figure 1 shows all of the controls and indicators on the front, back, top, bottom and right side of the UV254SD. It also shows the main components of the supplied UVA and UVC probes. Familiarize yourself with their positions and functions before moving on to the setup procedure.
SETUP 1. Choose the power source. Before using the UV254SD, be sure it is powered by fresh batteries or an optional 9VDC AC adapter plugged into the bottom jack on its right side (callout 1-12). To remove the battery compartment cover, remove the two screws holding it in place (callout 1-14). Then install six “AA” batteries in the correct orientation, using the polarity marks on the inside of the compartment as a guide. Replace the cover by replacing the two screws. 2. Install an SD card.
5. Enable or disable auto power off. Once the format of decimal divisions has been set and stored, the display will show the word “yES’ over the term “PoFF”. Press the SET ▼ button until the desired automatic power off management scheme (“yES” for enable; “no” for disable) is displayed. Press the REC/ENTER button to store the selection. If enabled, the power off function shuts off the UV254SD after a period of inactivity of ten minutes. 6. Enable or disable the beeper.
NORMAL OPERATION The UV254SD can measure and store three different kinds of values: • The intensity (in mW/cm2) of UVA light • The intensity (in mW/cm2) of UVC light • Temperature (in ºF or ºC), as sensed by a Type K or Type J thermocouple Pressing and holding the FUNC./HOLD/NEXT button will bring up, in order, three blank five-digit displays above the terms “A” (for UVA light), “C” (for UVC light) and “tP” (for temperature). Each display also automatically shows the correct unit for the parameter. 1.
HOLDING AND STORING MEASUREMENTS 1. To hold a measured value of light intensity or temperature, press the FUNC./HOLD/NEXT button during the measurement. Doing so will cause the word “HOLD” to appear at the top of the display. Pressing the FUNC./HOLD/NEXT button again releases the hold. 2. To record and recall readings, press the REC/ENTER button while making measurements. This will make the term “REC” appear at the top of the display.
5. To change the storage location of manually logged data, press the SET ▼ button once; this causes the “P” to disappear from the left side of the display and the value on its line to begin flashing. Once the flashing begins, you can use the SET ▼ and LOGGER ▲ buttons to change the flashing value to any number between 1 and 99. Once you have chosen the storage location, press the REC/ENTER button to save the setting. This causes the value to stop flashing and the “P” to return. 6.
SPECIFICATIONS Embedded microcontroller Custom one-chip LSI device Display type Liquid-crystal with green backlight Display size 2.05 x 1.5 in.
If the meter “freezes” (like a computer) and buttons become unresponsive, try resetting the instrument by pushing the RESET button on its right side (callout 1-11 of Fig. 1) with the end of a paper clip. Remove the batteries when storing this product for an extended period of time. Do not drop or disassemble the instrument or immerse it in water.
GENERAL TOOLS & INSTRUMENTS 80 White Street New York, NY 10013-3567 PHONE (212) 431-6100 FAX (212) 431-6499 TOLL FREE (800) 697-8665 e-mail: sales@generaltools.com www.generaltools.com UV254SD User’s Manual Specifications subject to change without notice ©2010 GENERAL TOOLS & INSTRUMENTS NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.
