Halltech Aquatic Research HT-2000 User manual

HT-2000 Battery Backpack Electro-fisher
Nov. 2009 HT-2000 Manual 1
HT-2000 Battery Backpack Electro-fisher
Manual
Contents
Introduction ......................................................................................................................2
Controls and Features .....................................................................................................3
HT-2000 Battery Backpack Electro-Fisher Operation ................................................5
HT-2000 Electro-Fisher Trouble-Shooting....................................................................6
HT-2000 Front Panel Displays and Controls.................................................................7
HT-2000 Battery Backpack Electro-Fisher Specifications ..........................................8
Standard Equipment Supplied .......................................................................................8
Parts Identification...........................................................................................................8
Anode Ring Options.........................................................................................................9
Accessories .......................................................................................................................10
Return Instructions. ........................................................................................................11
129 Watson Road South, Guelph, Ontario, Canada. N1L 1E4
Toll Free: 1-866-425-5832 Fax: [phone]
www.htex.com

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Introduction
Halltech's HT-2000 Battery Backpack Electro-fisher is a 24-volt Battery Powered
Electro-fisher enclosed in a watertight pelican case, mounted on a non-conductive
backpack frame. The HT-2000 works effectively in waters with high to low
conductivity. A 24 volt, rechargeable sealed gel type battery powers the HT-2000. The
battery is comprised of two 12 volt, 7.5 AH batteries bonded and wired together to
provide a 24-volt output. Each HT-2000 unit is supplied with two batteries and a charger
to extend operating time. Smaller batteries are also available for light duty.
The HT-2000 transforms the battery output into higher voltages. The output
voltage is variable from 50-950 V using 11 settings. The output frequency is variable
from 5-250 Hz using 11 settings. The maximum output power produced by the HT-2000
Battery Backpack Electro-fisher is 1 kW peak with a 2 ms pulse width.
The Battery and electrical circuits are contained in
a water tight, rugged pelican case, attached to a
non-conductive, durable pack frame. The pack frame
straps are adjustable to fit a wide range of body sizes.
The straps are also equipped with military style quick
release shoulder harnesses. To remove the unit quickly,
release the waist belt and pull down on the red release
straps.
The HT-2000 Battery Backpack Electro-fisher is
also equipped with two LCD displays. One is the
eight-digit seconds counter and the other is a four-digit
readout connected directly to the multifunction meter.
The multifunction meter can display mean current, peak
power, and battery voltage.
The HT-2000 comes with a wide range of safety
features; red strobe light , audible “power on” alarm,
water immersion alarm , tilt alarm , waterproof internal
battery , anode pole operator switch, electrode out of
water shut off, emergency shut-off switch on pulsator
unit (ESO), non-conductive, light-weight backpack frame,
and the harness quick release mechanisms. Light emitting
diodes (LED's) indicate which feature was triggered. The
LED's indicate when an overload, immersion, low battery, electrode out of water, or tilt
sensor has been tripped.
Each new unit is supplied with a lightweight fiberglass telescoping anode pole
(straight grip or crutch style) with waterproof switch, anode ring, and stainless steel
trailing cathode. These accessories along with the batteries and charger fit in the
aluminum field case provided.

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Controls and Features
All of the HT-2000's controls, except the emergency shut off switch (ESO) and
anode pole switch, are located within the watertight pelican case. The front panel
displays, controls, and connectors are shown on page 6 and described below.
Halltech’s new anode design is very different from historical anode designs. The
HT-2000's anode is a telescoping pole that allows the anode to be reduced to half its size
to allow for easier transportation and storage. It may also be adjusted to a comfortable
length based on the operator. The anode ring angle is also adjustable. If desired we also
have an anode pole that comes equipped with a crutch style handle. This crutch style
handle allows the user to grasp and hang on to the anode with greater ease. There is also
an area on the handle where a strap can be added to reduce fatigue to the users arm. The
switch on the anode is the last of three safety switches; the anode switch must be
depressed in for the unit to produce an output voltage. The output voltage switch is
located in the middle of the unit on the far right side. The output voltage ranges from 50-
950 V in 11 steps (50, 100, 150, 250, 350, 450, 550, 650, 750, 850, 950V). 50 to 350
volts is typically used in high conductivity waters (>300 microsiemens). 450 to 750 volts
work best in moderately conductive waters (100 to 300 microsiemens). 850 and 950
output voltage should typically only be used in low conductivity waters (less than 100
microsiemens). Increasing the output voltage just one step may increase the output peak
wattage 100% plus or minus depending on the conductivity on the water and the voltage
setting.
The Frequency [Hz] switch is located in the middle of the unit on the far left side
of the panel. The output frequency is in a range from 5-250 Hz in 11 steps (5, 10, 20, 40,
60, 80, 100, 130, 160, 200, 250Hz). The frequency is best described as the number of
times the fish is shocked in a given time period, or the number of pulse waves produced
each second. When first shocking a new site start with the lowest frequency setting.
Gradually increase the frequency until the desired effect is achieved. For example when
shocking a water body with a high conductivity (> 300 microsiemens) at an output
voltage of 150 volts and a frequency of 60, if you are rolling some fish but feel you aren't
getting all of them, try increasing the frequency to 80 or 100 Hz before increasing the
voltage to 250 V.
The Multifunction Meter switch is located directly in the middle of the panel.
The multifunction meter readout is located at the top right of the panel. The
multifunction meter can display mean current in Amps (xx.x display), peak power in
Watts (xxxx display), and battery voltage in Volts (xx.x display). The battery voltage
option is very useful for checking the level of charge of the battery being used. The peak
power option displays how many peak watts the unit is producing. This is also useful
because the unit will automatically overload when this value becomes too high.
To indicate if a feature has been activated the HT-2000 has been equipped with a
series of LED lights located near the top of the panel. The Overload Function enables
the unit to automatically shutdown and sound the tone alarm when the output power
becomes excessive. The LED light located at the far left will light up if an overload has
occurred. You must use a lower output voltage or frequency if an overload occurs. To
reset the overload LED you must push the front panel reset button, or cycle power with
the ESO button or the on/off switch located on the panel.

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Toggling the anode pole switch will reset the unit and allow it to continue shocking but
will not clear the LED indicator lights. The front panel reset button and the seconds
counter reset must be simultaneously depressed to reset the seconds counter.
The Immersed Function is a safety feature that will not allow the unit to operate
when the water level is up to or above the anode connection on the bottom of the
backpack unit. A sensor is connected between the two screws beside the anode
connector. If these screws become immersed in water or if water is present between them
the unit will shutdown, the tone alarm will sound and the immersed LED (second from
the left) will light up.
The Tilt Function is a safety feature that will not allow the unit to operate if it is
not perpendicular. If the operator was to fall or lean greater then 45ofront and back or to
either side the unit will shutdown, the tone alarm will sound, and the tilt LED (second
from the right) will light up. A poleswitch reset will restore normal operation. If an
operator were to fall, this feature would disable the unit .
The Electrode out of Water Function will inhibit output voltage when either
the anode or cathode is not in the water. If the unit is running and an electrode is
removed from the water the unit will shutdown, the tone alarm will sound, and the
Electrode out of Water (EoW) LED will light up. Areas exist where keeping both of
the electrodes in the water all of the time is impossible. In extremely low conductivity
waters, the electrode out of water feature is activated. These two conditions can be
resolved by disabling the out of water feature. The switch at the centre of the LED’s
(reset and disable) allows the operator to disable the function when needed. The
operator must press the button to disable the feature every time the unit is powered on
using either the emergency off switch or the on/off toggle switch on the panel. The
reason for this is so that the operator is consciously aware that the feature has been
disabled. When the feature is disabled the unit will still be emitting a output voltage
when one of the electrodes are out of the water, the operator must take every
precaution not to allow any contact with either electrode because this could result in
injury or death. The EoW disabled LED indicates that the anode is always live when
pulsed, even when removed from the water.
In addition the HT2000 has indicators to notify the operator when the battery is
too low to operate the unit effectively, and an LED to indicate if the fuse in blown. There
is a tone volume screwdriver adjustment for the loudness of the alarm on the front panel.

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HT-2000 Battery Backpack Electro-fisher Operation
1. Plug the anode and cathode into their proper connectors located on the bottom of the
pelican case. Connect the anode pole strain relief clip to the backpack frame. Place
the battery in the allotted area and connect it to the unit via the connectors. Place the
multifunction meter to battery voltage and turn the unit on using the on/off switch on
the front panel then pull and turn the emergency off switch to turn it on. The readout
in the display at the top right of the panel will tell you how much of a charge is in the
battery. A fully charged battery will give a reading from 24 – 26V.
2. Next get into the water and make sure both electrodes are in the water as well. Choose
the desired output voltage and frequency. If the conductivity of the water is unknown
use a low output voltage (100 or 150V) and frequency (40 or 60Hz) to start. Depress
the anode pole switch and observe the reaction of the fish. If the unit is not producing
satisfactory results try increasing the frequency a few levels before increasing the
output voltage. Only increase the output voltage one-step at a time. Repeat this
procedure until satisfactory results are obtained. Never change voltage ranges while
the anode thumb switch is depressed, this may damage the unit. By placing the
multifunction meter to the peak power option, you can see the output wattage of the
unit. Make sure the anode ring is not directly above the cathode because this will
greatly increase the output wattage and is a common source of overloads.
3. Check all of the unit’s safety features and functions before using the unit each day and
ensure all operators are familiar with all controls and safety features. The anode pole
switch should be toggled on and off to ensure proper operation. The overload feature
is tested by passing the anode ring over the cathode and the unit should overload and
shutdown The immersed function should be checked An easy way to check this
function is to hold a small piece of wire between the two screws by the anode
connection located on the bottom of the unit. The immersed LED should light up and
the tone alarm should sound when a connection is made between the two sensors. To
test the electrode out of water function, submerge the anode, depress the anode thumb
switch, and raise the anode ring out of the water. The alarm will sound and the unit
will shutdown. Test the tilt feature by depressing the anode thumb switch, and leaning
either forward or to a side. The unit will shutdown and the tone alarm should sound
before the operator reaches a 90obend.

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HT-2000 Electro-fisher Trouble-shooting
The following section is a trouble-shooting section to help you correct some of
the more common problems associated with using the HT-2000 Battery Backpack
Electro-fisher.
1. Turning the unit off and on by using the emergency off switch on top of the unit or the
on/off switch located on the panel is a hard reset, toggling the anode switch on the
anode pole is a soft reset. A hard reset or pushing the front panel reset button is
required to extinguish any of the LED light functions such as Overload , Tilt,
Electrode out of Water, and Immersed. To reset the seconds counter both the front
panel reset and the seconds counter reset must be pressed simultaneously.
2. The Voltage used is very dependent on the conductivity of the water. If an overload
occurs when the output is activated using the anode pole switch, it is likely that the
conductivity of the water is too high for the voltage selected. Reduce the voltage and
activate the output again, continue this process until an appropriate voltage is selected.
To compensate for using a lower voltage, increase the frequency to better the unit’s
results. Keep an eye on the fish being captured to ensure they are recovering quickly
and no burns or spinal abnormalities are present.
3. The HT-2000 Electro-fisher is equipped with a tilt feature that will not allow an output
voltage to be produced if the unit is not in its normal operating position. The unit’s
normal operating position is vertical, the same way it would sit on the operators back.
A tilt condition is indicated by a tone alarm and the tilt LED will be lit up. Turning
the unit off then on using the emergency off switch located on top of the unit will fix
the problem.

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HT-2000 Battery Backpack Electro-fisher
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Halltech's HT-2000 Battery Backpack Electro-fisher
Specifications
Conductivity Range: 10-3000 microsiemens/cm
Battery: 24 volt gel type (12V+12V)
Output Voltage: 50-950 V in 11 steps (50,100, 150, 250, 350, 450, 550, 650, 750,
850, 950V)
Output Power: 1kW peak (1000W) 2ms pulsed
Output Frequency: 5-250 Hz in 11 steps (5, 10, 20, 40, 60, 80, 100, 130, 160, 200,
250Hz)
Output Pulse Shape: + DC pulse 2 millisecond max
Weight: Approximately 29 lbs.
Overload Protection: automatic Electronic and 30A safety fuse
Electrodes: Telescoping anode pole, stainless steel trailing cathode
Timer: 8-digit seconds counter with +/- 0.003% accuracy
Multifunction meter: Mean Current (xx.x display) Amperes
Peak Power (xxxx display) Watts
Battery Voltage (xx.x display) Volts
Standard Equipment Supplied
Halltech's HT-2000 Battery Backpack Electro-fisher, telescoping anode pole, anode ring,
trailing cathode, two 24V (12V+12V) gel type batteries, battery charger, and an
aluminum field case. Parts Identification
.Red “Power On” Strobe Light
.Emergency Off Switch

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Anode
Anode Ring Options
1........Oversized Round Anode Ring
2........Diamond Shaped Anode Ring
3........Small Round Anode Ring
4........Round Net Anode Ring
5........Standard Round Anode Ring

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Accessories
24V, 7.2Amp Battery
Telescoping Anode Pole
Anode Rings (various shapes & sizes)
Aluminum Field Cases (various sizes)
Battery Charger
Cathode tail
Electro-fishing Dip Nets (various net shapes)
Polarized Sunglasses
Shoulder Length Rubber Gloves
Excellent Selection of GPS Units
Excellent Sonde Units and Y.S.I. Meters
Large assortment of Hack Kits
Dry Bags
Fish Measuring Boards
Head Lamps and Flashlights
First Aid Kits

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129 Watson Road South, Guelph, Ontario, Canada N1L 1E4
Phone: [phone] Ext. 39 Toll Free: 1-866-425-5832 Fax: [phone]
Ht-2000 Electro-fisher Return Instructions
Please print page number (2) of this document. Fill out and complete the form and attach
it to the equipment you are sending back for service.
Securely pack unit in its field case. If a field case is not available choose an appropriate
sized box (double wall preferred with at least 4” of space surrounding the equipment) If
you add additional items in the case pack them with the utmost care as loose items have
been known to damage the strobe lens.
Double check to make sure every part is packed in the kit (unless told otherwise).
Cathode tail, Anode pole, both batteries, charger, Anode ring, and electorfisher unit with
back pack rack.
Pack the surrounding space with packing material. Bubble wrap, and expanding packing
foam are recommended.
If shipping the unit across any border, make sure all the necessary shipping documents
are securely fastened to the field case or chosen box. Contact your shipping company if
you’re unsure of what documents are necessary.
If you have any other questions or concerns please contact our service manager:
Gordon Robb
Service Manager
Halltech Aquatic Research Inc.
129 Watson Rd. South
Guelph, Ontario, Canada N1L1E4
Phone: [phone] ext. 39
Fax: [phone]
[e-mail]
www.Halltech.ca

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