DTH3007SD
USER’S MANUAL
THERMOMETER-HUMIDITY METER
WITH DATALOGGING SD CARD
Please read this manual carefully and thoroughly before using this product.
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TABLE OF CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . 4 – 9
What’s in the case . . . . . . . . . . . . . . . . . . . . 4 – 5
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 7
Normal Operation . . . . . . . . . . . . . . . . . . . . . 7 – 8
Holding and Storing Measurements. . . . . . . . . . 8
Automatic vs. Manual Datalogging . . . . . . . 8 – 9
Transferring Data from the SD Card to a Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maintenance & Troubleshooting Tips . . . . . . . . 10 – 11
Optional Accessories. . . . . . . . . . . . . . . . . . . . . . . . . 11
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . 11
Return for Repair Policy . . . . . . . . . . . . . . . . . . . . . . 11
INTRODUCTION
Thank you for purchasing General Tools & Instruments’ DTH3007SD Thermometer-Humidity
Meter with Datalogging SD Card. Please read this user’s manual carefully and thoroughly before using the instrument.
The DTH3007SD is a general purpose handheld instrument that can make four kinds of measurements:
• The temperature and humidity of a fluid (simultaneously)
• The dew point of ambient air
• The wet-bulb temperature of ambient air
• The temperature of a surface
The instrument comes with a temperature-humidity probe that is used to make the first three types of measurement. Surface temperature measurements are made using an optional Type K or Type J thermocouple.
Several features and capabilities enhance the DTH3007SD’s versatility. Among them are automatic temperature compensation for dew point, wet-bulb and thermocouple measurements; the ability to hold readings and display maximum and minimum readings; and an automatic power off function that extends battery life.
Because it is microprocessor-based, the DTH3007SD can make full use of the portability, reliability and large storage capacities that SD memory cards offer. Measurements can be made automatically at any sampling rate between one second and one hour. After the instrument time-stamps and stores the measurements on an SD card plugged into it (a process called datalogging), the user can remove the card and plug it into a laptop or desktop computer either directly or via a USB card reader. The data logs are stored on the card as files with the .xls extension that can be opened by Microsoft’s Excel application.
The DTH3007SD has a backlit 2-1/2 in. diagonal display and is powered by six “AA”
Alkaline batteries or an optional 9-VDC AC adapter.
KEY FEATURES
• Four-function instrument measures temperature/humidity, dew point, wet-bulb temperature and surface temperature
• Big (2.5 in. diagonal) front-panel green backlit LCD is easy to read
• Displays maximum and minimum readings and holds any reading
• Automatically logs measurements at sampling time settable from one second to one hour
• Also supports manual datalogging and changing of SD card storage location
• Outputs Excel-compatible data logs
• Accepts SD memory cards as large as 16 GB
• Auto power off function
• Powered by six “AA” batteries or optional 9V AC/DC adapter
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OPERATING INSTRUCTIONS
WHAT’S IN THE CASE
The DTH3007SD comes fully assembled in a carrying case along with a temperaturehumidity probe, a 2 GB SD memory card and this user’s manual.
Optional accessories available from General Tools & Instruments include:
• Type K and Type J thermocouples
• A 9VDC adapter for a 110VAC power supply
• A carrying case
See the Optional Accessories section of this manual for more details.
Figure 1 shows all of the controls and indicators on the front, right side, back, top and bottom of the DTH3007SD. It also shows the main components of the included temperature-humidity probe. Familiarize yourself with the positions and functions of these controls, indicators and connectors before moving on to the setup procedure.
TOP
FRONT
BOTTOM
RIGHT
SIDE
BACK TEMPERATURE-
HUMIDITY PROBE
Fig. 1. The DTH3007SD’s controls and indicators and other physical features
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1-1 Liquid-crystal display
1-2 POWER/ESC button
1-3 FUNC./HOLD/NEXT button
1-4 REC/ENTER button
1-5 SET ▼ button
1-6 LOGGER ▲ button
1-7 Socket for temperature-humidity probe
1-8 Socket for Type K or J thermocouple
1-9 SD card socket
1-10 RS-232 output jack
1-11 RESET button
1-12 Socket for 9VDC AC adapter
1-13 Battery compartment cover
1-14 Battery compartment cover screws
1-15 Kickstand
1-16 Tripod attachment nut
1-17 Temperature-humidity probe plug
1-18 Temperature-humidity probe handle
1-19 Temperature-humidity probe head
SETUP
1. Choose the power source. Before using the DTH3007SD, make 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 (callout 1-13), 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. To prepare for setup, also install the supplied 2 GB SD memory card or another card with a capacity from 1 GB to 16 GB in the socket on the bottom of the instrument (callout 1-9). When installing the card, make sure its gold contacts are facing front and push the card into the socket until you hear a click. To remove the card, push it in until you hear a click and the card pops out.
Now power on the instrument by pressing the POWER/ESC button (callout 1-2) to generate a short beep. (To power off the DTH3007SD, press the POWER/ESC button and hold it until the instrument responds with a long beep.)
When the meter powers on, a series of transient startup screens will briefly appear. Once the display has stabilized, perform the following eight setup steps in the order presented.
3. Set the date and time. Press the SET ▼ button (callout 1-5) and hold it for at least five seconds, until the word “dAtE” appears in the center of the display, along with the flashing value “00.00.00” at the lower left, above “yy.mm.dd”.
Set the current year by pressing the SET ▼ or LOGGER ▲ button repeatedly until the correct value appears above “yy”. Quickly (within three seconds), press the REC/ENTER button to store the setting. The next screen that appears will have the value above “mm” flashing. Use the SET ▼ or LOGGER ▲ button to navigate to the current month and press the REC/ENTER button to store the setting. When the next screen flashes the value above
“dd”, again use the SET ▼ or LOGGER ▲ button to navigate to the current day and press the REC/ENTER button to store the setting.
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(If you press buttons too slowly in setup mode, the screen will revert to the normal display. To return to the setup sequence, press and hold the SET ▼ button again. To move ahead to the next field in the sequence or to the next parameter, press the FUNC./HOLD/NEXT button.)
Once you have set the date, the display will prompt you to set the hour, minute and second of the current time. Again use the SET ▼ or LOGGER ▲ buttons to navigate to the correct values, and the REC/ENTER button to store the settings.
4. Choose a decimal point or comma to represent the decimal division between integers and fractions (for example, American-style 20.88 vs. European-style 20,88). Once you have set the date and time, the display will show the word “bASIC” above the phrase
“dEC”. Press the SET ▼ button to make “bASIC” (American style) or “Euro” appear in the upper display, as desired. Press the REC/ENTER button to store the selection as the default.
5. Enable or disable auto power off. Once the format of decimal point 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 DTH3007SD after a period of inactivity of ten minutes.
6. Enable or disable the beeper. Once the auto power off scheme has been chosen and stored, the display will show the word “yES” over the word “bEEP”. Press the SET ▼ button until the desired setting (“yES” or “no”) is displayed, and then press the
REC/ENTER button to store the selection as the default.
7. Select the thermocouple type. Once the beep sound has been enabled or disabled, the lower part of the display will show the term “tYPE”. Press the SET ▼ or LOGGER ▲ button until your thermocouple’s type (K or J) appears on the display. Then press the
REC/ENTER button to store the selection.
8. Select the temperature unit. Once the thermocouple type has been selected and stored, the lower part of the display will show the term “t-CF”. Press the SET ▼ or
LOGGER ▲ button until the unit you prefer (“F” for Fahrenheit, “C” for Celsius”) is displayed. Then press the REC/ENTER button to store the selection as the default.
9. Set the datalogging sampling time. Once the thermocouple type has been selected and stored, the display will show a value above the letters “SP-t”. Press the SET ▼ or
LOGGER ▲ button to decrease or increase the value until the desired sampling time appears above “SP-t”. The options are 0, 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800 and
3600 seconds (0 seconds to 1 hour).
10. Format the SD card. Once the sampling time has been set and stored, the term “Sd-F” will appear in the lower half of the display. Press the REC/ENTER button.
Pressing the REC/ENTER button causes the word “no” or “yES” to appear over the term
“Sd-F”. Press the ▼ button to make a selection. Choose “yES” whenever a new SD card is being used, or when a used card is being repurposed (from use with another SD card instrument or a camera, for example) and all data on it is to be erased. Choose “no” to preserve any data on a card previously used with this instrument.
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If you choose “yES”, after you press the REC/ENTER button the instrument will prompt you to confirm that decision by displaying the term “Ent” below “yES” and sounding three beeps. To confirm that you want to begin the erasure/formatting procedure, press the
REC/ENTER button. “Ent” will then flash several times and the instrument will sound another three beeps to confirm that the SD card has been erased and formatted.
Once the SD card has been formatted (or not), the display will either return to the first of the eight steps in the setup sequence—setting the current date and time—or show the term
“ESC”. If “ESC” appears, press the POWER/ESC button to exit the setup procedure and enter normal operating mode.
NORMAL OPERATION
To prepare to make measurements, power on the DTH3007SD and make sure an SD card is firmly seated in the socket on its bottom.
The meter can make and display four kinds of measurements:
• The temperature and humidity of a fluid (simultaneously)
• The dew point temperature of ambient air
• The wet-bulb temperature of ambient air
• The temperature of a surface, as measured by a Type K or Type J thermocouple
1. To select the measurement mode, use the FUNC./HOLD/NEXT button. Pressing the button repeatedly cycles through the four modes. When the FUNC./HOLD/NEXT button is released, the selected mode becomes the default until the button is pressed again.
By default, the DTH3007SD uses Celsius units for temperature measurements. To make
Fahrenheit units the default, perform Step 8 of the setup procedure.
2. To measure temperature and humidity simultaneously, seat the temperaturehumidity probe plug (callout 1-17 of Fig. 1) in its socket (callout 1-7) on the top of the instrument. Then press the FUNC./HOLD/NEXT button until the display shows the term
“rH”. Holding the probe by its handle, either immerse its head in the liquid whose temperature you wish to measure, or expose the head to a representative volume of air whose temperature and humidity you wish to measure. The upper part of the display will show the measured relative humidity value (as “%RH”) while the lower part will show the temperature (as “ºF” or “ºC”).
3. To measure the dew point of ambient air, make sure the temperature-humidity probe is seated in its socket. Then press the FUNC./HOLD/NEXT button until the lower part of the display shows the term “dP”. The upper part of the display will show the measured dew point value in ºF or ºC.
4. To measure the wet-bulb temperature of ambient air, make sure the temperaturehumidity probe is seated in its socket. Then press the FUNC./HOLD/NEXT button until the lower part of the display shows the term “_Et”. The upper part of the display will show the measured dew point value in ºF or ºC.
5. To measure surface temperature using a thermocouple, make sure the temperaturehumidity probe is not in its socket. Plug an optional Type K or Type J thermocouple into its dedicated socket (callout 1-8 of Fig. 1).
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By default, the DTH3007SD is configured for a Type K thermocouple. To use a Type J thermocouple, perform Step 7 of the setup procedure.
Whenever the instrument is in measurement mode, you can turn off the backlight (which is on by default) by briefly pressing (but not holding) the POWER/ESC button. To reactivate the backlight, briefly press the button again.
Whenever the instrument is in measurement mode, you also can check the current date and time by briefly pressing the SET ▼ button (which has the words “Time check” stenciled below it). Doing so causes both values to appear briefly at the lower left of the display.
HOLDING AND STORING MEASUREMENTS
1. To hold a measured value, 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. Pressing the REC/ENTER button again, briefly, will make the term “MAX” appear to the right of
“REC” and switch the display to the maximum value stored in memory during the last recording session. Pressing the REC/ENTER button again, briefly, will make the term
“MIN” appear to the right of “REC” and switch the display to the minimum value stored during the last session.
3. To exit recording mode, press the REC/ENTER button and hold it for at least three seconds, until the term “REC” disappears from the top line of the display. The display will then revert to showing the current reading.
AUTOMATIC VS. MANUAL DATALOGGING
The DTH3007SD can automatically log data at a user-selected sampling period from
1 second 3,600 seconds (one hour). To view the sampling time that the instrument has been set up to use, press the LOGGER ▲ button (which has the words “Sampling check” stenciled below it) once. To change the sampling time, perform Step 9 of the setup procedure.
1. To start automatic datalogging, press the REC/ENTER button once. The top line of the display will show the term “REC”. Pressing the LOGGER ▲ button at this point will make
REC flash and add the flashing term “LOGGER” at the top right of the display. This indicates that the instrument is currently time-stamping measurements and storing them in memory.
2. To pause automatic datalogging, press the LOGGER ▲ button once; this action makes the flashing term “LOGGER” disappear from the top right of the display and changes the term “REC” from flashing to constant. Pressing the LOGGER ▲ button again resumes automatic datalogging.
3. To end automatic datalogging, press the REC/ENTER button and hold it for at least three seconds. This action causes the “REC” message to disappear.
4. To log data manually, set the sampling time to zero by performing Step 9 of the setup procedure. Then press the REC/ENTER button once. The display will show the term “REC”
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on the top line, a value in the middle, and below it the letter “P” on the left and a number from 1 to 99 on the same line to the right. The number indicates the position on the SD card that will be used to store manually logged data.
Now press the LOGGER ▲ button. This will cause the beeper to sound and the term
“LOGGER” to briefly appear at the upper right of the display. As in automatic datalogging mode, in this mode the instrument is storing measurements and their time stamps on the SD card.
In manual datalogging mode, however, measurements are stored continuously (with a sampling time of zero), and their locations on the card can be changed.
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. To end manual datalogging, press the REC/ENTER button and hold it for at least three seconds. This action causes the “REC” message to disappear from the top line of the display.
TRANSFERRING DATA
FROM THE SD CARD
TO A COMPUTER
After automatic or manual datalogging of measurements, remove the SD card from the instrument and plug it into your computer either directly (if it has an SD card slot) or through an
SD card reader.
Because the files containing the time-stamped data logs have the extension .xls, they open in
Microsoft’s Excel application.
Figures 2 and 3 show two kinds of
Excel presentations: a data-only screen and a graphics-only screen.
Fig. 2. Typical Excel data-only screen
Fig. 3. Typical Excel graphics-only screen
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SPECIFICATIONS
Embedded microcontroller Custom one-chip LSI device
Display type
Display size
Parameters measured
Measurement range
Measurement accuracy
Measurement resolution
Sampling time options
Settable parameters
Liquid-crystal with green backlight
2.05 x 1.5 in. (52 x 38mm)
Temperature, relative humidity (R.H.), dew point, wet-bulb temperature
For temperature, 32º to 122ºF (0º to 50ºC); for R.H., 5 to 95%; for dew point, -13.5º to 120.1ºF (-25.3º to 48.9ºC); for wet-bulb temperature, -6.9º to 122ºF (-21.6º to 50ºC)
± 1.5ºF (± 0.8ºC) for temperature; sum of temperature and humidity accuracies for dew point and wet-bulb temperature
0.1 degree (F or C) for temperature and humidity
0, 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800 or 3600 seconds
(0 seconds to 1 hour)
Date, time, auto power off, beep sound, sampling time, decimal point or comma decimal division, temperature unit
Storable/recallable readings Maximum, minimum
SD card capacity 1 GB to 16 GB
Operating temperature 32º to 122ºF (0º to 50ºC)
Operating relative humidity 0 to 85%
Power source
Power consumption
Dimensions of meter
Weight of meter
6 Alkaline “AA” batteries or optional 9-VDC AC adapter
3.5 mADC (normal operation, with backlight off and SD card not saving data); 28 mADC with backlight on and card saving data; 40 mADC with backlight on and card saving data
6.97 x 2.68 x 1.77 in. (177 x 68 x 45mm)
1.08 lb. (489g)
MAINTENANCE & TROUBLESHOOTING TIPS
When the icon appears in the left corner of the display, it’s time to replace the six
“AA” batteries that power the instrument (although measurements will remain valid for several hours after the low-battery indicator first appears). Replacing the batteries requires removing the two screws that hold the battery compartment cover in place, as explained in
Step 1 of the setup procedure. After inserting fresh batteries in the correct orientation, tighten the screws to secure the cover.
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If the instrument “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 or not using the instrument for an extended period of time.
Do not drop or disassemble the instrument or immerse it in water.
OPTIONAL ACCESSORIES
Optional accessories available from General Tools & Instruments include:
• Type K and Type J thermocouples
• 9VDC adapter for a 110V power supply
WARRANTY INFORMATION
General Tools & Instruments’ (General’s) DTH3007SD Thermometer-Humidity Meter with
Datalogging SD Card is warranted to the original purchaser to be free from defects in material and workmanship. Subject to certain restrictions, General will repair or replace this instrument if, after examination, the company determines it to be defective in material or workmanship for a period of one year.
This warranty does not apply to damages that General determines to be from an attempted repair by non-authorized personnel or misuse, alterations, normal wear and tear, or accidental damage. The defective unit must be returned to General Tools & Instruments or to a General-authorized service center, freight prepaid and insured.
Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product. In no event shall General be liable for any incidental, special, consequential or punitive damages, or for any cost, attorneys’ fees, expenses, or losses alleged to be a consequence of any damage due to failure of, or defect in any product including, but not limited to, any claims for loss of profits.
RETURN FOR REPAIR POLICY
Every effort has been made to provide you with a reliable product of superior quality.
However, in the event your instrument requires repair, please contact our Customer Service to obtain an RGA (Return Goods Authorization) number before forwarding the unit via prepaid freight to the attention of our Service Center at this address:
General Tools & Instruments
80 White Street
New York, NY 10013
212-431-6100
Remember to include a copy of your proof of purchase, your return address, and your phone number and/or e-mail address.
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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: [email protected]
www.generaltools.com
DTH3007SD User’s Manual
Specifications subject to change without notice
©2010 GENERAL TOOLS & INSTRUMENTS
NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.
MAN#DTH3007SD 12/03/10
