Delmhorst Instrument Co C-2000 User manual

C-2000
v2.0, 2.1
owner’s manual
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TABLE OF CONTENTS
2 C-2000 Features
3 Key Functions
3 Check Calibration
4 Set the Scale
4 To Change the Set-Point
5 Information About Your Readings
5 To Check the Accumulated Readings
6 To Reset Meter
6 Applications
9 Temperature Correction
9 Care Of Your Meter
10 Service for Your Meter
11 Warranty
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C-2000 FEATURES
hDesigned primarily to check the moisture content (%MC)
in lint cotton and seed cotton. Versions 2.0 and higher
include scales for viscose rayon and wool.
hResistance technology recognized around the world as the
most accurate method for measuring moisture.
hProven microcontroller circuit
hAverages up to 100 accumulated readings
hMC ranges - lint cotton 4%-16%, seed cotton 6%-20%,
viscose rayon 6%-25%, wool 12%-30%.
hIncludes (1) 9-volt battery
hOne-year warranty
Read Key
Calibration
Check Key
#
Set-Point
Key
$
Scale
Key
@
!
DELMHORST C-2000
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KEY FUNCTIONS
!Read:
Reads the %MC value.
@Check:
Checks the meter calibration. Displays the
average of up to 100 accumulated readings;
displays the highest stored reading; erases the
readings from memory.
#Set-Point:
Displays the current set-point. Also acts as an
arrow (scroll) key to increase the set-point
value in 1% increments. A buzzer will alert
you if the meter reads higher than the selected
%MC value.
$Scale:
Displays the meter scale as #1 (Lint cotton),
#2 (Seed cotton), #3 (Viscose Rayon), #4
(Wool). Also acts as an arrow key to decrease
the set-point value.
CHECK CALIBRATION
hPress the calibration check key @and read key !simul-
taneously. Meter is in calibration if it displays 10.8% ±
0.2, regardless of the scale setting.
When checking calibration, there is no need to disconnect the
electrode.
If you check the calibration and the display does not read
10.8, it is likely an indication of a low battery. If this occurs,
change the battery immediately. Continued use with a low
battery may cause the meter to go out of calibration.If you
have a fresh battery and the instrument still does not indi-
cate an acceptable calibration, return it to DELMHORST for
service. See “Service for Your Meter” section.
Note: When the battery is removed and then reconnected,
the meter displays its software version for one second and
then turns itself off. After replacing the battery, you must
reset the meter as described in the “Resetting the Meter”
section.
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A hard Reset is required if, after changing the battery, the
display is frozen. This is sometimes caused by the interrup-
tion of contact between the battery and the battery lead wire.
Resolve this as follows:
Disconnect the battery. Press and hold the Read key for 15
seconds. Press and hold the Check key for 15 seconds.
Release the Check key. Connect a fresh battery to the lead
wire in a single action, making sure to align the poles
properly and without interrupting contact. If the display
remains frozen, repeat the procedure. If this procedure
does not solve the problem, refer to the Service for Your
Meter section.
TO SET THE SCALE
Set the scale for the material being tested: #1 Lint cotton, #2
Seed cotton, #3 Viscose Rayon, #4 Wool.
hTo change the scale, press the scale key $. The meter will
display the current scale for one second.
hPress and hold the scale key $to toggle through the four
scales.
hRelease the scale key $to stop at the desired scale.
Changing the scale will automatically reset the set-point value
to the default setting for that particular scale. Default settings
are as follows:
Lint cotton - 10% Viscose Rayon - 18%
Seed cotton - 10% Wool - 20%
TO CHANGE THE SET-POINT
hTo change the set-point value press the set-point key #.
The meter will display the current set-point value for the
scale you have chosen for one second.
hTo scroll forward to a higher value for that scale hold the
set-point key #while the current set-point is displayed
and scroll to the set-point value desired.
hTo scroll backward through the set-point values, press and
release the set-point key#. Within one second, press and
hold the scale key $. Continue to hold the scale key $
and the set-point will decrease.
hWhen scrolling in either direction, release the key to stop
at your desired set-point.
hA buzzer sounds if the meter reads a %MC higher than the
set-point.
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5
INFORMATION ABOUT YOUR
READINGS
The meter will accumulate up to 100 readings. After all 100
readings are “stored” it will not add new readings until the
memory has been cleared. It will also continue to display the
average of all 100 readings as a reminder that the memory
is full.
hTo add a reading to the sum of all the previously stored
readings, release the read key !within 2 seconds.
When taking and storing readings for a specific material, be
sure to clear the meter before moving on to the next scale if
you do not want to group all of the readings together.
Moisture content of the samples is the primary factor affect-
ing meter readings. However, readings are also affected by
the following:
hType of cotton
hArea where it is grown
hImpurities
hCompaction (density) around the electrode surfaces
hTemperature of the sample
In order to minimize the effect of these factors and improve
the repeatability of the meter readings, keep in mind the fol-
lowing points:
hUse samples with minimum of impurities.
hOptimal accuracy may be obtained if meter readings
are checked against %MC by means of properly run
oven tests on the particular product being tested.
TO CHECK THE
ACCUMULATED READINGS
This feature displays the total number of all accumulated read-
ings for the given material you have chosen, the average of
those readings, and the highest stored reading.
hTo view the readings, press and release the calibration check
key @. First the meter displays the number of accumulated
readings for one second, then the average of those readings
for two seconds. Then it displays the highest stored reading
for two seconds. The total “cycle” time is five seconds.
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hTo keep the accumulated readings in memory release the cal-
ibration check key @before the total cycle time is complete.
hTo erase readings, hold the calibration check key @for
more than five seconds. The total, average and highest read-
ings will be displayed as above, followed by a zero to indicate
all readings have been erased.
TO RESET METER
hPress and release the calibration check key @.
hWithin one second, press and hold the scale key @. The
meter will display a reset sequence as follows: “110”,
“8”, “10.8”. The last number, “10.8” is a calibration
check.
hResetting the meter clears the memory and restores the
default settings of scale #1, set-point 10.
APPLICATIONS
Testing Lint Cotton and
Seed Cotton
hAttach the #52-E/C Sample Cup Electrode to the connector
on top of the meter.
hSet the scale for (#1) Lint cotton or (#2) Seed cotton and
select the set point.
hPlace the material in the sample cup. Press the cotton
firmly into the cup with your finger. The sample in the cup
should be overflowing during the test, even while you are
pressing it with your finger.
hPress the read key !and read the moisture content on the
display. The meter displays the %MC for two seconds.
Readings below 4% lint cotton will be displayed as a negative
number. Readings above 16% lint will be displayed as a
flashing “16.2%”. Both the underrange and overrange read-
ings should be disregarded. They will not be added to the
accumulated readings or used in calculation of the average
or highest reading.
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Readings below 6% seed cotton will be displayed as a nega-
tive number. Readings above 20% seed cotton will be dis-
played as a flashing “20.0%”. Both the underrange and the
overrange readings should be disregarded. They will not be
added to the accumulated readings or used in calculation of
the average or highest reading.
Tests made on seed cotton may not be as accurate as those
made on lint cotton. This is due to the fact that the seed cot-
ton sample is made up of lint and seed, and the quantity of
seed may vary from sample to sample. Also, the moisture
content of the seed is usually higher than that of the lint.
When testing seed cotton, direct contact is still made with
the cotton fiber only and not with the seed of the sample.
Variables in quantities and moisture content of the seed,
during calibration and in field tests, may affect the accuracy
and repeatability of the meter readings. The seed cotton
scale gives an indication of “total” moisture content (the
moisture content of the seed and the lint in a sample as
determined by oven tests) in the seed cotton sample. This
may be of interest only in buying and selling seed cotton
where some consideration may be given to the weight rela-
tionship between moisture content and dry matter.
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Testing Baled Cotton
hAttach the #30-E/C Electrode to the connector on top of
the meter.
hSlide the plastic spacer over the #491 contact pins from
the bottom of the pins, mount the pins in the chucks and
tighten the set screws. (The #491 contact pins are not
inserted into the chucks for shipping purposes).
hSet the Scale to #1 Lint cotton and select a set point.
hInsert the electrode pins into the bale and press the read
key !.
hPlace the pin spacers near the tips of the pins when con-
tact is first made with the bale. This helps to keep the pins
parallel as they are forced into the bale.
The #491 contact pins are insulated, except for 1-3/4” at
the tip. The insulation helps to identify the area of moisture,
since the reading is obtained from the tip of the pin. Keeping
track of moisture readings as the pins are pushed into the
bale will give an idea of the uniformity of moisture distribu-
tion in the bale. Higher moisture readings near the surface
are an indication that the cotton has been exposed to higher
moisture after baling.
The C-2000 gives accurate results on normally compressed
bales. If the bale is loosely packed, the meter will read lower
than the actual moisture content. If the bale is very tightly
packed, the readings will be only slightly higher than normal,
and as a rule, no correction needs to be made.
Well-conditioned material will give uniform readings; however,
material that is baled before it is dry will show a wide range
of moisture content. Several tests should be made on each
bale, and you should note the average and the highest read-
ings of these tests.
Testing Yarn
hConnect the #37-E/C multi-pin electrode to the connector
on top of the meter.
hSet the scale to #1 Lint cotton and select a set point.
hInsert the electrode pins into the yarn and press the read
key !.
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Temperature Correction
The basic calibration assumes the cotton temperature to be
70°F. For best accuracy, apply a temperature correction if
the cotton temperature is outside the range of 60°F to 80°F.
Make a correction of approximately 1.0% for every 20° F.
The meter will read higher than the actual moisture content
as cotton temperature increases, and will read lower as cot-
ton temperature decreases.
Example:
At 70°F, a reading of 7% indicates actual %MC of 7%. At
varied temperatures, meter readings will vary as follows:
Cotton Temperature Meter Reading Actual %MC
110°F 9.0% 7%
50°F 6.0% 7%
CARE OF YOUR METER
To keep your meter in good working order:
hStore your meter in a clean, dry place. The protective
carrying case provided is an ideal storage place when
the meter is not in use.
hChange the 9-Volt battery as needed. Continued use with a
low battery may cause the meter to go out of calibration.
hClean the meter, contact pins, and probes with any
biodegradable cleaner. Use the cleaner sparingly and on
external parts only. Keep the cleaner out of the external con-
nector. DO NOT IMMERSE THE METER OR ANY ELEC-
TRODE IN WATER.
hRemove the battery if the meter will not be used for one
month or longer.
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10
SERVICE FOR YOUR METER
If your meter is not working properly, replace the battery
with a new one and check the calibration. If this does not
resolve the problem, go to www.delmhorst.com and follow the
instructions under the Product Support tab.
If you require further assistance please call
877-DELMHORST (335-6467) or 973-334-2557.
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WARRANTY
Delmhorst Instrument Co., referred to hereafter as
Delmhorst, guarantees its C-2000 meter for one year from
date of purchase and any optional electrodes against defects
in material or workmanship for 90 days. If, within the war-
ranty period of the C-2000, you find any defect in material
or workmanship return the meter following the instructions
in the “Service for Your Meter” section. This limited war-
ranty does not cover abuse, alteration, misuse, damage dur-
ing shipment, improper service, unauthorized or unreasonable
use of the meter or electrodes. This warranty does not cover
batteries, pin assemblies, or pins. If the meter or any option-
al electrodes have been tampered with, the warranty shall be
void. At our option we may replace or repair the meter.
Delmhorst shall not be liable for incidental or consequential
damages for the breach of any express or implied warranty
with respect to this product or its calibration. With proper
care and maintenance the meter should stay in calibration;
follow the instructions in the “Care of Your Meter” section.
UNDER NO CIRCUMSTANCES SHALL DELMHORST BE
LIABLE FOR ANY INCIDENTAL, INDIRECT, SPECIAL,
OR CONSEQUENTIAL DAMAGES OF ANY TYPE WHAT-
SOEVER, INCLUDING, BUT NOT LIMITED TO, LOST
PROFITS OR DOWNTIME ARISING OUT OF OR RELATED
IN ANY RESPECT TO ITS METERS OR ELECTRODES
AND NO OTHER WARRANTY, WRITTEN, ORAL OR
IMPLIED APPLIES. DELMHORST SHALL IN NO EVENT
BE LIABLE FOR ANY BREACH OF WARRANTY OR
DEFECT IN THIS PRODUCT THAT EXCEEDS THE
AMOUNT OF PURCHASE OF THIS PRODUCT.
The express warranty set forth above constitutes the entire
warranty with respect to Delmhorst meters and electrodes
and no other warranty, written, oral, or implied applies. This
warranty is personal to the customer purchasing the product
and is not transferable.
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NOTES
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NOTES
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51 Indian Lane East
Towaco, NJ 07082
(877)-DELMHORST
(335-6467)
www.delmhorst.com
[email protected]
©1999, Delmhorst Instrument Co.
510INS-0012 REV. 01/13
WHEN ACCURACY IS THE POINT.®
TM
For 65 years Delmhorst
Instrument has been the leading
manufacturer of high quality, US-
made moisture meters and thermo-
hygrometers. Today we offer a
wide range of meters for applica-
tions including water damage
restoration, construction, flooring,
lumber/woodworking, paper, and
agriculture.
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