Matakuliah
Tahun
Versi
: H0262 / Pengukuran dan Instrumentasi
: 2005
: 00 / 01
Pertemuan 13
Data Presentation
1
Learning Outcomes
Pada akhir pertemuan ini, diharapkan mahasiswa
akan mampu :
• Mahasiswa dapat menghubungkan sistem
pengukuran pada industri
2
Outline Materi
•
•
•
•
•
•
Materi 1 : Elemen data presentation
Materi 2 : Pointer scale indicator
Materi 3 : Galvanometer recorder
Materi 4 : Servo recorder
Materi 5 : Digital recorder
Materi 6 : Pemeliharaan instrumen
3
Data Presentation
• Elemen data presentation
Gb 13.1 Klasifikasi elemen data presentation
A record would be require:
(a) a high speed event
(b) large amount of data
(c) in fault situation
• Pointer scale indicator:
TD = Bn Ai
TR = c 
i=
ETH - Eb
RTH + RL
Eb dapat dihitung dengan Faraday`s law:
Eb
d
= n AB
dt

ETH
K
(s) =
1
wn2
s2 +
2
wn
s +1
K = steady state sensitivity
w = frequency natural
 = damping ratio
6
Gb 13.2 Pointer scale indicator
7
•Galvanometer recorder
Sensitivity steady state dari recorder:
y

y
=
ETH
ETH

Gb 13.3 uv. galvanometer recorder
8
•Servo recorder
Gb 13.4 servo recorder
9
KD KA KI
y
ETH =
LIs3 + [R1+L(KV+b)]s2+R(KV+b)s + KT KA KI
•Digital recorder
-qualitative analysis of high speed event
-quantitative analysis can be performed
-interpolation
-digital strip pointer
10
•Digital recorder
Gb 13.5 ASCII code for 14-column strip printer
11
•Pemeliharaan instrumen :
- instrumen laboratorium :
Data Colour
Oven
- Instrumen industri :
Thermo Control
Length indicator
12
<<ISI>>
13
<< CLOSING>>
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