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ELTRA
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ONH-2000
ELTRA ONH-2000 User Manual
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2002 by
E
L
T
RA
Gm
b
H Ger
m
a
ny
– Ja
nu
ar
y
2002 – Servi
ce Ma
nu
al
OH
900 /
O
N 900 / ONH 2000
2.
8-1
2.
8
2.8
Furnac
e
li
ft
adj
us
tme
nt
T
h
e p
u
r
p
ose
of this adj
u
stmen
t
is t
o
ensu
re that th
e
fu
r
n
ace
can lift
a
n
d
fit
corre
ct
l
y i
n
t
o t
h
e
u
pper c
h
amb
er.
T
o ad
j
u
st
,
ope
n
the furn
ace
and
loose
n
t
h
e screw
s
(
C )
,
th
e fur
n
ace is n
ow
f
ree
t
o mov
e
h
ori
zon
tally.
Close th
e fur
n
ace, the fur
n
ace
aligns
itself
as it
mov
es in
to the upper ch
amb
er.
Fasten
the screws
( C )
a
g
ain.
B
A
C
2
-
8
-
1
55
57
Table of Contents
Default Chapter
3
Table of Contents
3
1 Faults
12
No Gas Flow
12
The Flow Rate Is Not Stable
13
The Base Line of the TC Cell Cannot be Adjusted to Zero
14
Analysis Time too Long
15
High Blank Value
16
Erratic Results
17
The LED for the Temperature Regulation of the Infrared Cell or the Thermoconductivity Cell Does Not Flash
18
No Analysis Start
21
The Message "No Water Flow" Appears on the Display
22
Furnace Temperature too High
22
The Base Line of the TC Cell Is Negative, See 2.12
26
No Furnace Power During the Analysis
27
The Sample Drop Motor Does Not Rotate
28
Noise or Drift of the Infrared Baseline
30
Furnace Cut-Off During Analysis
31
Beeper Responding
32
Saved Data Is Lost
33
1.21 the Chopper Motor Doesn`t Rotate
35
1.22 the Samples Make Bubbles
36
1.23 Spare Parts Kits
37
1.24 Unstable Current
40
2 Adjustments, Test and Function Explanation
41
Gas Flow Controller Adjustment and Jumper Settings
41
Pressure Switch
45
Infrared Zero-Baseline, Control and Adjustment
46
IR-Source Voltage Setting
49
Temperature Regulation of the IR-Cell
50
Pneumatics for Furnace Lift
54
Flow Rates
55
Furnace Lift Adjustment
56
Linearization
57
Balance Programming
59
TC Zero Baseline Adjustment
61
Diagnostic Printout
62
Temperature Regulation of the TC Cell
63
Water Flow and Furnace Temperature Sensing Board ON21
64
The Furnace Control Board PW13
67
Sample Drop Motor and the Motor Switch Adjustment
71
Hot Extraction Upgrade
74
3 Service
75
IR-Paths, Cleaning and Replacing
75
Infrared Electronics
78
Infrared Power Supply
79
Infrared Temperature Regulation
82
Replacing the EPROMS
85
Clearing Memory
86
Electronic Reset
87
Cleaning the Solenoid Valves
92
Replacing the Flow Sensor
93
Installing an AC Power Stabilizer
96
Replacing the Gas Pump
97
Additional Safety Features for Furnace Pneumatics (Optional)
98
230V / 400 V Operation
100
Upgrading of Analysers with Electronic Rack for Using the New Windows Software
102
4 Miscellaneous
107
Ordering Numbers
107
Purging of the Chopper
181
Maintenance OH- 900, on
182
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ELTRA ONH-2000 Specifications
General
Brand
ELTRA
Model
ONH-2000
Category
Measuring Instruments
Language
English
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