Campbell Scientific DMM600 User Manual
DMM600 Duff Moisture Meter
Revision: 11/12
Copyright © 2002-2012
Campbell Scientific, Inc.
Warranty
“PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC. are
warranted by Campbell Scientific, Inc. (“Campbell”) to be free from defects in
materials and workmanship under normal use and service for twelve (12)
months from date of shipment unless otherwise specified in the corresponding
Campbell pricelist or product manual. Products not manufactured, but that are
re-sold by Campbell, are warranted only to the limits extended by the original
manufacturer. Batteries, fine-wire thermocouples, desiccant, and other
consumables have no warranty. Campbell's obligation under this warranty is
limited to repairing or replacing (at Campbell's option) defective products,
which shall be the sole and exclusive remedy under this warranty. The
customer shall assume all costs of removing, reinstalling, and shipping
defective products to Campbell. Campbell will return such products by surface
carrier prepaid within the continental United States of America. To all other
locations, Campbell will return such products best way CIP (Port of Entry)
INCOTERM® 2010, prepaid. This warranty shall not apply to any products
which have been subjected to modification, misuse, neglect, improper service,
accidents of nature, or shipping damage. This warranty is in lieu of all other
warranties, expressed or implied. The warranty for installation services
performed by Campbell such as programming to customer specifications,
electrical connections to products manufactured by Campbell, and product
specific training, is part of Campbell’s product warranty. CAMPBELL
EXPRESSLY DISCLAIMS AND EXCLUDES ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. Campbell is not liable for any special, indirect,
incidental, and/or consequential damages.”
Assistance
Products may not be returned without prior authorization. The following
contact information is for US and international customers residing in countries
served by Campbell Scientific, Inc. directly. Affiliate companies handle
repairs for customers within their territories. Please visit
www.campbellsci.com to determine which Campbell Scientific company serves
your country.
To obtain a Returned Materials Authorization (RMA), contact CAMPBELL
SCIENTIFIC, INC., phone (435) 227-9000. After an applications engineer
determines the nature of the problem, an RMA number will be issued. Please
write this number clearly on the outside of the shipping container. Campbell
Scientific's shipping address is:
CAMPBELL SCIENTIFIC, INC.
RMA#_____
815 West 1800 North
Logan, Utah 84321-1784
For all returns, the customer must fill out a "Statement of Product Cleanliness
and Decontamination" form and comply with the requirements specified in it.
The form is available from our web site at www.campbellsci.com/repair. A
completed form must be either emailed to repair@campbellsci.com or faxed to
(435) 227-9106. Campbell Scientific is unable to process any returns until we
receive this form. If the form is not received within three days of product
receipt or is incomplete, the product will be returned to the customer at the
customer's expense. Campbell Scientific reserves the right to refuse service on
products that were exposed to contaminants that may cause health or safety
concerns for our employees.
Table of Contents
PDF viewers: These page numbers refer to the printed version of this document. Use the
PDF reader bookmarks tab for links to specific sections.
1. Overview......................................................................1
2. Cautionary Statements...............................................1
3. Initial Inspection .........................................................1
3.1 DMM600 Packing List.........................................................................1
4. Quickstart ....................................................................2
5. Overview......................................................................6
6. Specifications .............................................................7
6.1 Physical ................................................................................................7
6.2 Power ...................................................................................................7
6.3 Performance .........................................................................................8
7. Operation.....................................................................8
7.1 Sample Chamber..................................................................................8
7.2 Electronics............................................................................................8
7.3 Display End..........................................................................................8
7.3.1 Power Switch ................................................................................8
7.3.2 Audible Indicator ..........................................................................8
7.3.3 Display ..........................................................................................9
7.3.4 Serial Port......................................................................................9
7.4 Water Content Measurement................................................................9
7.4.1 Gravimetric and Volumetric Water Content.................................9
7.4.1.1 Determining Duff Sample Bulk Density ..........................11
7.4.2 Duff Size and Water Content Heterogeneity...............................11
7.5 PCDMM Software .............................................................................11
7.5.1 Introduction.................................................................................11
7.5.2 Calibration Equation ...................................................................12
7.5.3 Description of PCDMM Functions .............................................12
7.5.3.1 Menus...............................................................................12
7.5.3.2 Indicators..........................................................................13
7.5.3.3 Command Buttons............................................................13
7.6 Calibration..........................................................................................13
7.6.1 DMM600 Standard Calibration...................................................13
7.6.2 User Calibration ..........................................................................14
7.6.2.1 Equipment Required for User Calibration........................14
7.6.2.2 Calibration Procedure.......................................................14
i
Table of Contents
7.7
Drying Samples and Calculating Volumetric Water Content............ 16
7.7.1 Conventional Oven Method ....................................................... 16
7.7.2 Microwave Oven Method........................................................... 16
8. Maintenance ..............................................................17
8.1 Changing the 9-Volt Battery.............................................................. 17
8.2 Cleaning the Sample Chamber .......................................................... 17
Figures
3-1. Ships with equipment .......................................................................... 2
4-1. DMM600 components......................................................................... 3
4-2. Duff placed in sieve............................................................................. 4
4-3. Duff placed in chamber ....................................................................... 4
4-4. Turn knob to make measurement ........................................................ 5
4-5. Bottom of DMM600............................................................................ 6
7-1. Downloading coefficients to convert to gravimetric water content... 10
7-2. PCDMM user interface display ......................................................... 12
7-3. DMM600 standard calibration........................................................... 14
ii
DMM600 Duff Moisture Meter
1. Overview
The DMM600 Duff Moisture Meter is the product of collaboration between
Campbell Scientific and USDA-Forest Service, Rocky Mountain Research
Station, and Missoula Technology and Development Center. This portable,
battery-powered duff meter accurately measures moisture content in duff
material, which is critical to those conducting scheduled burns as well as those
attempting to battle out-of-control fires. The DMM600 is a stand-alone device
(a datalogger is not required). A sieve, carrying case, and software are
included.
Before installing the DMM600, please study
• Section 2, Cautionary Statements
• Section 3, Initial Inspection
• Section 4, Quickstart
2. Cautionary Statements
The DMM600 is a precision instrument. Please handle it with care.
3. Initial Inspection
Upon receipt of the DMM600, inspect the packaging and contents for damage.
File damage claims with the shipping company. Immediately check package
contents against the shipping documentation; the packing list is provided in
Section 3.1, DMM600 Packing List. Contact Campbell Scientific about any
discrepancies.
3.1 DMM600 Packing List
The following are included with the DMM600; also see FIGURE 3-1:
1. 15601 padded carrying case.
2. 15749 sieve case.
3. CD containing (a) video instruction, (b) PCDMM software, (c) DMM600
operating manual, and (d) a sample Excel spreadsheet for calibrations.
4. 7.5 cm (3 in) diameter #4 sieve.
5. 10873 6 foot, 9-pin female-to-9-pin male serial cable to connect the
DMM600 to a PC.
6. Phillips screwdriver.
7. Spare 9 Vdc alkaline battery.
1
DMM600 Duff Moisture Meter
FIGURE 3-1. Ships with equipment
4. Quickstart
This section describes the process for getting a water content measurement.
Information about the sensor components, using the software, and calibrating
the sensor is located in Section 7, Operation.
1. Unscrew the compression knob completely and loosen (don’t remove) the
chamber access thumbscrew. Remove the sample chamber cap by turning
slightly counter-clockwise and lifting (see FIGURE 4-1).
2
Loading...