Citadel CT-NH, Техническое руководство

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CTD-N Technical Manual
P/N 95F-6000-00 (February 2017) page 7
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
CTD-N Options
Depth Rating – CTD-N units are available with the following depth rating: 500 meter (Delrin
housing), 2000 meter (Aluminum housing), or 7000 meter (Titanium housing).
Pressure Sensor – The pressure sensor is available in the following ranges (in meters): 20, 100,
200, 350, 500, 667, 1000, 2000, 3000 or 7000.
Vertical - The CT-NV and CTD-NV conductivity sensor is free flushing with no exposed electrodes
that can foul or external fields that can affect calibration. The temperature sensor is directly in the
water flow path of the conductivity sensor.
Horizontal – The CT-NH and CTD-NH models have a horizontal head with copper screens to pre-
vent biofouling to build up on the sensors.
Communications Port – The bulk head connector can be configured for the following communi-
cations: RS-232, RS-485, or CMOS. See Communication Interfaces
for more information.
External Sensor Interface – The Option 1 and Option 2 connectors are used to connect to op-
tional external sensors. See APPENDIX C: Optional Sensors for more information.
Battery Pack – An internal alkaline battery pack is used to power the CTD-N when the instrument
is deployed autonomously. The battery pack comprises 16 welded alkaline "C" size cells.
NOTE. CTD options must be defined at time of order.
CTD-N part numbers use a seven field code - 111-22-3-444444-5555-6666-7.
Field 1 Field 2 Field 3 Field 4 Field 5 Field 6 Field 7
Fa
m
ily
Co
nd
uct
ivi
ty /
T
emp
er
at
ur
e /
Dept
h
Induc
tiv
e T
ec
hnol
og
y Ty
pe
NV
=
N
XIC
V
er
tic
al
NH
=
N
XIC
H
or
izont
al
Ext
er
nal
S
en
so
r I
nt
er
fac
e
Bi
t 1
=
DR
(N
o B
at
ter
y)
/
SC
(B
at
ter
y)
Bi
t 2 =
B
oar
d E
lec
tro
ni
cs
Ty
pe
Bit
3 =
H
ar
dw
ar
e I
nt
er
fac
e
Ty
pe
Bi
t 4
=
C
om
m
uni
ca
tions
T
ype
Bi
t 5
=
H
ous
ing
De
pt
h R
at
ing
(m
et
er
s)
Bi
t 6 =
S
tem
L
en
gt
h
Fi
el
d 5
=
D
ep
th R
at
ing of
Conduc
tiv
ity
(m
et
er
s)
Fi
el
d 6 =
P
ress S
en
so
r
Opt
ion
(m
et
er
s)
Fi
el
d 7
=
O
EM
Te
m
pe
ra
tur
e
Pr
obe
M
ount
ing P
os
iti
on
CT NV 0 = None 0 = DR 0 = NXIC 0 = N/A
0 = CMOS
(TTL) 0 = None 0 = N/A
0 = No
Cond 0 = None 0 = N/A
CTD NH I = Yes B = SC 1 = RS232 1 = 500 500 20
2 = RS485 2 = 2000 7000 100
3 = 7000 200
350
500
667
1000
2000
3000
7000
Example: CTD-NH-0-000110-500-500-0 corresponds to a CTD, NXIC Horizontal, DR, RS232, 500
meter Conductivity cell, 500 m Housing, 500 m Pressure Sensor.