Hawkeye Goshawk - Manual

GOSHAWK INSTALLATION, OPERATION AND TROUBLESHOOTING MANUAL. 1
REPLACES “GOSHAWK INSTALLATION INSTRUCTIONS, MAY 2010”
VALID FOR ALL GOSHAWK MODELS MANUFACTURED SINCE MID-2008.
1.0 INTRODUCTION
1.1 DESCRIPTION
The Goshawk Level Transmitter is a bolt-on, two-wire 24 VDC loop powered
transmitter that adds 4 – 20 mA electronic output to Hawkeye Industries Inc.’s Redtail
Hawk and Roadside Hawk gauge heads. The transmitter connects mechanically to the
gauge head cable reel, converting the rotational position of the cable reel to a precise
current output.
Because Hawkeye’s Dry-Seal gauge heads use wound reels of cable as opposed to
pulleys, the rotational position of the reel provides accurate and repeatable float and
indicator position information. The solid-state nature of the transmitter electronics
allow the device to continue to track (but not transmit) float position information even
when unpowered. Powering the unit back up will provide instantaneous level position.
1.2 SAFETY CONSIDERATIONS
The Goshawk Transmitter carries CSA Hazardous Location Certification for Class I Div
1 Group C & D. Some parts of the transmitter may be classified as sparking
components, and as such the cover should only be removed from the device when in
a non-energized state, or in an non-hazardous location. Several procedures in this
manual require power to be disconnected from the transmitter before proceeding.
Failure to do so will provide erroneous calibration information, and may cause damage
to the transmitter, calibration equipment and / or process control equipment.
NOTE: INFORMATION REQUIRED FOR SUCCESSFUL INSTALLATION
CAUTION OR IMPORTANT: INFORMATION IF NOT HEEDED MAY RESULT IN
DAMAGE TO THE EQUIPMENT AND/OR INSTALLATION FAILURE
WARNING: INFORMATION THAT IF NOT FOLLOWED MAY RESULT IN INJURY OR
SHOCK.
1.3 ROTATIONAL ORIENTATIONS
1.3.1 EMPTYING DIRECTION
Indicator
moves
Float
moves
Atmospheric
Reel rotates
Transmitter rotates
UPWARD DOWNWARD CLOCKWISE COUNTERCLOCKWISE
FIGURE 1 EMPTYING DIRECTION
1.3.2 FILLING DIRECTION
Indicator
moves
Float
moves
Atmospheric reel
rotates
Transmitter
rotates
DOWNWARD UPWARD COUNTERCLOCKWISE CLOCKWISE
FIGURE 2 FILLING DIRECTION
NOTE: ROTATION DIRECTIONS FOR THE GAUGE HEAD AND TRANSMITTER ARE
OPPOSITE TO ONE ANOTHER FOR THE SAME FILLING / EMPTYING DIRECTION IN
THE ORIENTATIONS ILLUSTRATED ABOVE. THIS IS DUE TO THE NATURAL
ORIENTATION OF EACH DEVICE THE READER WILL ENCOUNTER OVER THE
COURSE OF INSTALLING AND TROUBLESHOOTING THE TRANSMITTER.
2.0 PART IDENTIFICATION
2.1 GAUGE HEADS
FIGURE 3 GAUGE HEADS AND THEIR ELECTRONIC COVERS
CAUTION: THE ELECTRONIC COVER PLATE CAN ONLY BE INSTALLED ON THE
ATMOSPHERIC SIDE OF THE GAUGE HEAD. INSTALLATION ON THE PRESSURE
SIDE WILL COMPROMISE THE GAUGE HEAD SEALS.
2.2 TRANSMITTER - EXTERNAL
2.3 TRANSMITTER - INTERNALS
2.4 TRANSMISSION (GH II AND GH III)
2.5 PCB
3.0 BASIC INSTALLATION
NOTE: BEFORE STARTING INSTALLATION, READ AND UNDERSTAND ALL THE
INSTRUCTIONS PROVIDED BELOW.
3.1 TOOLS REQUIRED
Transmitter Installation
Redtail
Wrenches ............................................................ 7 / 16 in and 9 / 16 in
Pliers ....................................................Vise-grip style locking pliers
Roadside
Wrenches .............................................................. 7 / 16 in and 1 / 2 in
Pliers ....................................................Vise-grip style locking pliers
Electrical Connections & Calibration
Allen Key ................................................................................. 7 / 64 in
Screw Driver ........................................................... 1 / 8 in wide Slot Driver
Loop Calibrator ...................................................................... Fluke 789 or Eq.
Or:
Multimeter ...................................................... Fluke 187 or Eq.
and Power Supply ....................................................... 13 – 24 VDC
and Load Resistance ........................................................... see 7.3
GOSHAWK
LEVEL
TRANSMITTER
OPERATION AND
TROUBLESHOOTING GUIDE
Refer to www.hawk-eye.com for
latest manuals and information
READ AND UNDERSTAND THIS DOCUMENT BEFORE
INSTALLING AND USING THE GOSHAWK TRANSMITTER
REDTAIL SYSTEM ROADSIDE SYSTEM
GOSHAWK
REDTAIL SYSTEM ROADSIDE SYSTEM
GOSHAWK
REDTAIL
GAUGE HEAD
REDTAIL
ELECTRONIC COVER PLATE
ROADSIDE
ELECTRONIC COVER PLATE
ROADSIDE
GAUGE HEAD
[A] COVER
[B] COVER STAKE
SCREW
INTERNALS
SEE [E] THRU [L]
[C] BOX
[D] TRANSITION
COUPLING
[E] POWER TERMINAL
(ORANGE)
[F] ENCODING
POTENTIOMETER
TERMINAL (GREY)
[H] PCB
[K] STANDOFFS
[D] TRANSITION
COUPLING
[G] ENCODING
POTENTIOMETER
[I] H-CLIP
REPLACED
BY [M] - [P]
IN GH II AND GH III
[J] OPERATOR SHAFT
[L] OPERATOR BUSHING
[M] IDLE GEAR
(LARGER)
[G]
[N] DRIVE GEAR
(SMALLER)
[O] TRANSMISSION
CHASSIS
[P] TRANSMISSION
CENTRE AXLE
[J]
[E] [F]
[U] R19 (SPAN)
TRIMMER
[V] R20 (ZERO)
TRIMMER
[H]
[Q] TEST POSTS
TP3 & TP4
[S] R10 TRIMMER
[R] R13 TRIMMER
[T] TEST POSTS
TP1 & TP2