Delmhorst Instrument Co G-34 User manual

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OWNER’S MANUAL
MODEL G-34 MOISTURE DETECTOR FOR BALED HOPS
INTRODUCTION
Thank you for purchasing the Delmhorst model G-34 Moisture Detector. The G-
34 is a rugged, reliable instrument that enables you to easily check moisture
levels in baled hops to assure quality and safe storage. Features include:
 Easy-to-read analog display.
 Moisture Range: 7%-14%.
 Built-in battery and calibration check.
 Auto-shutoff timer to extend battery life.
 Sturdy plastic carrying case.
 2-9V batteries (included)
 1-year warranty on the meter, 90DD on all electrodes
OPERATION
1. To check battery voltage, push the switch down to the “OFF” position and
hold. The batteries are OK if the needle moves beyond “11” (BATT OK”).
The 9-volt batteries are located in the compartment on the case bottom.
2. To check the meter calibration, push the switch to the “ON” position and
hold. The meter is in calibration if it reads “13.5” on the dial. A tolerance
of + 0.5 is acceptable. An optional external resistance standard (part
no.MCS-44) is also available. Please contact Delmhorst or your local
dealer to purchase.
To turn the meter on, push the switch to the “ON” position and release.
The meter remains on for 4 minutes. The auto-timer is reactivated for 4
minutes with each subsequent test with a reading of 8% or higher. If
readings are below 8%, push the switch “ON” from time to time to prevent
the meter from turning “OFF” automatically. The meter may be turned off
manually by pushing the switch to the “OFF” position. When the meter is
“ON”, the needle rests below the 6% mark.
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3. To check the %MC of bales connect the 830-2 (10 in) or 830-5 (12 in)
prod to the H-4 handle. Connect the H-4 to the input connector marked
“electrode” on the meter. Force the probe into the bale and read the
moisture content on the meter scale. An optional electrode (30-E/C) with
two 9-1/2in insulated pins is also available.
ABOUT YOUR READINGS
Electrical meter readings provide very useful guidelines to the producer when
targeting the 8%-12% MC range for safe packaging and storage. The meter
indicates the moisture level in the hops that is in contact with the un-insulated tip
portion of the prod. Since moisture distribution usually varies in baled hops, an
average of several tests will give greater validity to the data collected. It is
important to pay particular attention to any high readings and the frequency at
which they occur. Keep in mind that a few wet spots in the bale may cause
considerable damage.
In an effort to minimize the effect of variability of moisture and possibly improve
meter accuracy, it may be desirable to grind material and take readings on
smaller samples. Use an ordinary household food chopper to grind and then stir
cone petals and strigs for testing in a small container or bucket. The no. 831
short pin prod (with H-4 handle) or the 37-E/C multi-pin electrode can be used for
this purpose.
Meter readings are affected by the temperature of the hops. The original
calibration of the meter was developed on hops at a temperature of 80°F. Higher
temperatures result in higher meter readings than actual MC; lower temperatures
result in lower meter readings. For best accuracy apply a temperature correction
to readings that are taken at temperatures at 70°F or below and at 90°F or
above. The general rule is to subtract 1% from the meter reading for every 10°F
greater than 80 and add 1% to the meter reading for every 10° less than 80.
CARE OF YOUR METER
 Store your meter in a clean, dry place. The protective carrying case
provided is an ideal storage place when the meter is not in use. If the
meter has been left in a hot or cold environment overnight or for an
extended period, allow the meter to acclimate to the temperature
conditions in which it will be used for minimum 1-2 hours, or as long as
possible.
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 Clean the meter and electrodes with any biodegradable cleaner. Use the
cleaner sparingly and on external parts only. Keep cleaner out of the
sensor input connector.
 Remove the batteries if the meter will not to be used for one month or
longer.
SERVICE FOR YOUR METER
If your meter is not working properly, replace the batteries with
new ones and check the calibration.
WARRANTY
Delmhorst Instrument Co., referred to hereafter as Delmhorst, guarantees
moisture meters for one year from date of purchase and any optional electrodes
against defects in material or workmanship for 90 days. If, within the warranty
period of the moisture meter, you find any defect in material or workmanship,
return the meter using the Return Form. This warranty does not cover abuse,
alteration, misuse, damage during 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 optional 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 Servicing Your Meter section.
UNDER NO CIRCUMSTANCES SHALL DELMHORST BE LIABLE FOR ANY
INCIDENTAL, INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES OF
ANY TYPE WHATSOEVER, 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.
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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.
Rev 10/13
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