 Dalhousie Heatflow Probe
Crane Deployment from
Bow:
Track Deployment from Stern:
Technical Specifications:
1. Mechanical:
A. Weight Stand
|
material
|
galvanized mild steel
|
|
dimensions
|
2.1 m x 50 cm x 50 cm
|
|
base weight
|
550 kg
|
|
added weight
|
450 kg max = 20 x 22.5 kg bars
|
B. Penetration bars
|
material
|
strengthened SPS steel
|
|
dimensions
|
2/3/5 m x 6.4 cm diameter
|
|
weight
|
60/90/150 kg
|
C. Sensor tube and top housing
|
material
|
steel and stainless steel
|
|
dimensions
|
4/6 m x 8 mm dia (tube)
|
|
20 cm x 8 cm dia (top housing)
|
|
weight
|
5 kg (est)
|
|
connector
|
TBA
|
D. Tensioner
|
material
|
stainless steel
|
|
dimensions
|
50 cm x 6.4 cm dia
|
|
weight
|
6 kg
|
E. Instrument pressure cases (2)
|
material
|
High strength Al-7075
|
|
dimensions
|
78 cm x 15 cm dia each
|
|
1.9 cm wall thickness
|
|
weight
|
25 kg each
|
|
connectors
|
Seacon
|
|
operating depth
|
6000 m
|
F. Other
|
underwater cable
|
moulded Seacon
|
|
LP08/16+LP08/19+HS06/4
|
|
main shackle
|
stainless 5 kg (est)
|
|
standoffs
|
stainless 0.5 kg each (est)
|
|
couplings
|
stainless 5 kg each (est)
|
G. Sea-Bird 19 Seacat CTD Profiler
2. Electronics
A. Data logger
|
computer
|
Onset Tattletale 8
|
|
program language
|
Aztec C
|
|
data storage
|
256 kb RAM
48 Mb PCMCIA memory card
|
|
batteries
|
24 Alk C-cells (8 series
x 3 parallel)
12v (>36 hrs cont. operation)
|
|
36 V (pinger), 8-14 V (electronics) (24-48
hrs cont. operation, depending on setup)
|
|
data channels
|
13 (expandable to 50)
|
|
max resolution
|
0.15 mK (@ 16 bit)
|
|
cycle time
|
0.5 or 0.25 s per channel
|
|
temp range
|
10 deg C (selectable from
-2 to 22 C)
|
|
sensors
|
Thermometric diode type
thermistors
|
|
2000 ohms @ 20 deg C
|
|
Tilt
|
2 Schaeritz AccuStar (orthogonally
mounted)
|
|
0.1 deg angular resolution
|
B. Pinger and Heat Pulse
|
batteries
|
21 NiCad D-Cell series
|
|
24 V (rechargeable)
|
|
transducer
|
ITC 3013
|
|
pinger freq
|
6 to 14 kHz selectable
|
|
heat pulse
|
selectable 100 to 5000 joule
|
|
heater wire
|
22 AWG, 90 Alloy (0.46 ohm/m)
|
|
