Pfeiffer Vacuum IMR 420 User manual

OPERATING INSTRUCTIONS
Translation of the original instructions
IMR 420, IMR 430
Bayard-Alpert and Extractor Gauges, Temperature Resistant Gauge Head Cable

2 BG 5034 BEN (2017-01) IMR420_430.oi
Meaning of the sticker "Calibration", 12).
In all communications with Pfeiffer Vacuum, please specify the information on the
product nameplate.
Specimen nameplate
This document applies to products with part numbers
PT T07 359 900 (IMR 420, Bayard-Alpert Gauge)
PT T08 359 900 (IMR 430, Extractor Gauge)
PT 548 332 -T (Gauge head cable, 3 m)
PT 548 333 -T (Gauge head cable, 5 m)
PT 548 334 -T (Gauge head cable, 10 m)
PT 548 338 -T (Gauge head cable, 50 m)
PT 548 342 -T (Gauge head cable, temperature resistant 200 °C, 3 m)
PT 548 343 -T (Gauge head cable, temperature resistant 200 °C, 5 m)
PT 548 344 -T (Gauge head cable, temperature resistant 200 °C, 10 m)
PT 548 348 -T (Gauge head cable, temperature resistant 200 °C, 50 m)
The part number (No:) can be taken from the product nameplate.
If not indicated otherwise in the legends, the illustrations in this document corre-
spond to the IMR 420 Bayard-Alpert gauge. They apply to the IMR 430, extractor
gauge by analogy.
We reserve the right to make technical changes without prior notice.
All dimensions in mm.
The references to diagrams, e.g. (2/3), consist of the fig. no. and the item no. in
that order.
The IMR 420 is a Bayard-Alpert measurement system and the IMR 430 is an ex-
tractor measurement system for connection to an IMG 400 operating unit. Opera-
tion of these passive sensors is based on the hot cathode ionisation effect.
The temperature resistant gauge head cable must not be exposed to a tempera-
ture exceeding 200 °C max. (250 °C at the flange of the sensor).
The IMR 420 and IMR 430 gauges may only be used for the measurement of total
pressures in vacuum systems and this only in connection with the IMG 400 opera-
ting unit.
Sticker
Product Identification
Validity
Description
Intended Use

BG 5034 BEN (2017-01) IMR420_430.oi 3
Gauge
Operating Instructions
Gauge head cable with plug fitted on the equipment side and with touch protection
Housing with cover (supplied separately)
Ion collector cable
Mounting bolts (supplied separately)
Operating Instructions
Scope of Delivery
Gauges
Temperature resistant
gauge head cable

4 BG 5034 BEN (2017-01) IMR420_430.oi
Contents
Sticker 2
Product Identification 2
Validity 2
Description 2
Intended Use 2
Scope of Delivery 3
1 Safety 5
1.1 Symbols Used 5
1.2 Personnel Qualifications 5
1.3 General Safety Instructions 5
1.4 Liability and Warranty 5
2 Technical Data 6
3 Installation 8
3.1 Montage 8
3.2 Connecting the Temperature Resistant Gauge Head Cable 8
4 Operation 12
5 Maintenance 13
5.1 Exchanging the Cathode 13
6 Spare Parts, Accessories 14
7 Storage 15
8 Returning the Product 15
9 Disposal 16
Appendix 17
A: Conversion Table 17
B: Literature 17
EU Declaration of Conformity 18
For cross-references within this document, the symbol ( XY) is used; for cross-
references to further documents listed under Literature, use is made of the symbol
( [Z]).

BG 5034 BEN (2017-01) IMR420_430.oi 5
1 Safety
DANGER
Information on preventing any kind of physical injury.
WARNING
Information on preventing extensive equipment and environmental damage.
Caution
Information on correct handling or use. Disregard can lead to malfunctions or
minor equipment damage.
Notice
Skilled personnel
All work described in this document may only be carried out by persons who
have suitable technical training and the necessary experience or who have been
instructed
Adhere to the applicable regulations and take the necessary precautions for the
process media used.
Consider possible reactions with the product materials ( 6).
Adhere to the applicable regulations and take the necessary precautions for all
work you are going to do and consider the safety instructions in this document.
Before beginning to work, find out whether any vacuum components are conta-
minated. Adhere to the relevant regulations and take the necessary precautions
when handling contaminated parts.
Communicate the safety instructions to all other users.
Pfeiffer Vacuum assumes no liability and the warranty is rendered null and void if
the end-user or third parties
disregard the information in this document
use the product in a non-conforming manner
make any kind of interventions (modifications, alterations etc.) on the product
use the product with accessories not listed in the corresponding product docu-
mentation.
1.1 Symbols Used
Symbols for residual risks
1.2 Personnel Qualifications
1.3 General Safety
Instructions
1.4 Liability and Warranty

6 BG 5034 BEN (2017-01) IMR420_430.oi
2 Technical Data
IMR 420 IMR 430
Materials exposed to vacuum
Lead-in pins NiFe
Insulator Al203 ceramic, glazed
Pin sealing plate NiFe
Flange stainless steel
Cathode iridium with yttrium oxide coating
Anode Pt/Ir 90/10 and
Mo/Pt wrapped wire
Mo and CoNiCr
Collector tungsten
Reflector NiFe
Flange connection DN 40 CF
Electrode system configuration Bayard-Alpert Extractor system
Ambient temperature during
operation +20  +80 °C
Max. flange temperature with tem-
perature resistant gauge head cable 250 °C
Max. bake-out temperature without
plug 400 °C
Storage temperature +20  +50 °C
Relative humidity
Annual average
On 60 days
65% (non-condensing)
85% (non-condensing)
Use within indoor rooms only,
altitude up to 2000 meters above sea level
X-ray limit <1×10-11 hPa <1×10-12 hPa
Upper limit of measuring range 1×10-2 hPa 1×10-4 hPa
Lower limit of measuring range 2×10-11 hPa 2×10-12 hPa
Max. bake-out temperature 200 °C
(250 °C at the gauge head flange)
Insulation materials used PTFE, PEEK
Length 3 m, 5 m, 10 m, 50 m
IMR 420 IMR 430
Collector potential 0 V
Cathode potential +80 V +100 V
Anode potential +220 V +220 V
Reflector potential  +205 V
Emission current range 0.1  10 mA 1.6 mA
Cathode heater current 1.5 A (typ.)
Cathode heater voltage 3 V (typ.) 3.7 V (typ.)
Sensitivity for nitrogen 17 hPa (typ.) 6.25 hPa (typ.)
Max. power when baking out 90 mA / 480 V 45 mA / 480 V
General gauge head data
Heat resistant gauge head cable
Operating characteristics when
used with control unit IMG 400

BG 5034 BEN (2017-01) IMR420_430.oi 7
Fig. 1 Dimensions in mm
Dimensions [mm]

8 BG 5034 BEN (2017-01) IMR420_430.oi
3 Installation
Caution
As a rule, all ionisation measurement systems must only be operated
in connection with a properly earthed pump system.
Installation and mounting may only be carried out with the operating
unit switched off.
Caution
When connecting the vacuum gauges to the vacuum system it must
be strictly observed that during operation the gauges are not subjected
to mechanical oscillations, impact or vibrations.
The mounting position of the gauge heads has no influence on proper
operation. It is not permissible to install a venting valve in the immedi-
ate vicinity. The then suddenly occurring air flow may result in mecha-
nical damage to the sensitive cathode.
When installing several gauge heads at one common component
(T-piece or cross for example) an optical separation is required. The
gauge heads may not directly "see" each other. Interactions may
cause incorrect measurements.
Humidity at the insulators (2/14) caused by condensing water for ex-
ample , can give rise to incorrect measurements due to leakage cur-
rents.
Caution
Do not use force to connect the plug. When plugging in make sure first
that all pins are lined up in parallel and are straight. Otherwise the
current feedthrough can suffer damage.
DANGER
DANGER: Live Voltages
If during operation the IMG 400 suffers a malfunction then a live vol-
tage may be present at the gauge head cable connection (CH 1,
CH 2).
Affix the touch protection component at the IMG 400 (BNC plug). The
touch protection component is supplied together with the gauge head
cable.
Caution
Switch the gauge off first before working at the gauge cable. After
switching off, wait for at least 15 seconds.
3.1 Montage
Connecting the gauge head
cable and the extension cable
3.2 Connecting the
Temperature Resistant
Gauge Head Cable

BG 5034 BEN (2017-01) I
Disas
s
for co
n
resist
a
Conn
e
resist
a
the fla
n
MR420_430.oi
s
embling the
n
necting the
a
nt gauge he
e
cting the te
m
a
nt gauge he
n
ge on the
g
gauge hea
d
temperatur
e
ad cable
m
perature
ad cable to
g
auge head
Remov
e
from th
e
The ga
u
tions wi
t
(2/4).
For this
and the
differen
t
Fig.
2
V
p
f
C
d
c
B
h
(
c
l
d
e
the plug gui
d
e
gauge head
u
ge head IMR
t
h a greater d
i
reason three
plug guide (2
t
bolt diamete
The temp
e
after the g
a
2
Connection
V
ia the high-t
e
p
lugs so that
t
f
lange (2/1).
C
onnect the t
e
d
epicted in fig
c
oded
B
olt the housi
n
h
ead flange (
2
(
2/5 and 2/6)
a
c
ure the entir
e
ief (2/10).
d
e (2/4) by un
(2/1).
R
420 has bee
n
i
stance betw
e
spacers hav
e
/4). Positioni
n
rs on the gau
g
e
rature resista
a
uge head ha
of the gauge
e
mperature c
a
t
hese may the
e
mperature r
e
. 3. The indivi
d
n
g (2/13) ont
o
2
/1) again wit
h
a
nd the 3 spa
c
e
cable with th
s
crewing the
c
n
designed in
en gauge he
a
e
been fitted b
e
g of the plug
g
g
e head (2/1).
nt gauge hea
d
s
already bee
1 Ga
2 Sp
a
3 Sp
a
4 Pl
u
5 Cy
l
6 Cy
l
7 Io
n
8 Co
9 Lid
10 Str
11 Te
m
he
a
12 Ca
13 Ho
14 Ins
h
ead
a
ble pull the h
o
reafter be scr
e
sistant gauge
d
ual wires of
t
o
the gauge
h
the bolts
c
ers. Se-
e strain re-
c
ylinder head
accordance
w
a
d flange (2/1
)
e
tween gaug
e
g
uide is defin
e
.
d
cable may
a
e
n installed.
a
uge head
acer for M3 s
c
acer for M4 s
c
u
g guide
linder head s
c
linder head s
c
n
collector ca
b
o
untersunk sc
r
d
r
ain relief
mperature re
s
a
d cable
a
ble groove
o
using
s
ulators (10 p
c
o
using (2/13)
ewed back o
n
e
head cable t
o
t
he gauge he
a
screws (2/5
a
w
ith the VDE r
)
and plug gui
d
e
head flange
e
d through th
e
a
lso be conne
c
c
rew
c
rew
c
rew M3
c
rew M4
b
le (coax.)
r
ews (M3 × 1
5
s
istant gauge
c
s.)
over the con
n
n
to the gauge
o
the gauge h
e
a
d cable are
c
9
a
nd 2/6)
egula-
d
e
(2/1)
e
c
ted
5
)
n
ection
head
e
ad as
c
olor-

10
F
i
r
F
itting the g
a
ncluding the
r
esistant gau
a
uge head
temperatur
e
u
ge head ca
b
T
i
n
F
m
c
o
e
b
le
Now th
e
at the c
e
Secure
screws
he gauge he
a
n
serted into th
Bef
o
pos
s
or removing
o
m
ust be unloc
k
o
ver (2/9) firs
t
Es
p
car
e
ing
DA
If d
tag
e
CH
Affi
tou
c
ca
b
e
ion collector
e
ntre of the g
a
the cover (2/
9
(2/8).
a
d including t
h
e vacuum ch
a
o
re connectin
g
s
ible run a va
c
o
r replacing th
k
ed in the gau
t
.
Caut
p
ecially note t
h
r
e. Do not sub
j
of the curren
t
DAN
G
NGER: Live
V
uring operati
o
e may be pre
s
2).
x the touch p
r
ch protection
b
le.
cable (2/7) c
a
a
uge head.
9
) with the co
u
h
e temperatur
e
a
mber and bo
l
g
, we recomm
c
uum test or
a
e gauge hea
d
ge head hou
s
i
on
h
e pin assign
m
j
ect the pin c
o
t
feedthrough
/
G
ER
V
oltages
o
n the IMG 40
0
s
ent at the ga
u
r
otection com
p
component is
a
n be inserted
u
ntersunk
e
resistant ga
u
l
ted on.
end to pump
d
a
direct leak s
e
d
proceed in t
h
ing, and for t
h
m
ent. Provide
o
ntacts to any
leak)
0
suffers a m
a
u
ge head cab
p
onent at the
I
supplied tog
e
BG 5034 B
E
d
u
ge head cab
d
own the sys
t
e
arch.
h
e reverse or
d
h
is reason un
s
e
the connecti
o
bending forc
e
a
lfunction the
n
b
le connection
IMG 400 (BN
C
e
ther with the
E
N (2017-01) IMR420_430
l
e can be no
w
t
em and if
d
er. The plug
s
crew the
o
n with great
e
s! (Damag-
n
a live vol-
(CH 1,
C
plug). The
gauge head
.oi
w