Electrical connection D-Sub, 15-pin, male
Sensor cable
For analog values only,
without degas function
For analog values,
with degas function
All functions,
incl. RS232C interface
4 conductors, shielded
5 conductors, shielded
7 conductors, shielded
Cable length (24 VDC) ≤35 m (4/5/7x0.25 mm²)
≤50 m (4/5/7x0.34 mm²)
≤100 m (4/5/7x1.0 mm²)
For operation with RS232C
interface
≤30 m
Materials on the vacuum side
Housing, supports,
screens
Feedthroughs
Insulator
Cathode
Cathode holder
Pirani element
stainless steel
NiFe nickel plated
glass
iridium, yttrium oxide (Y
2
O
3
)
molybdenum
tungsten, copper
Internal volume
DN 25 ISO-KF
DN 40 CF-R
≈24 cm
3
≈34 cm
3
Maximum admissable
Pressure
2 bar (absolute)
Admissible temperatures
Storage
Operation
Bakeout
–20 … +70 °C
0 … +50 °C
150 °C (without electronics
unit)
Relative humidity
Year’s mean
During 60 days
≤65% (not condensable)
≤85% (not condensable)
Use indoors only
altitude up to 2000 m NN
Type of protection IP 30
Dimensions [mm]
4-40UNC 2B
DN 25 ISO-KF DN 40 CF-R
4-40UNC 2B
Weight
353-500, 353-501
353-502, 353-503
353-505, 353-507
353-509
353-506, 353-508
353-513
≈285 g
≈550 g
≈430 g
≈695 g
Measuring Signal vs. Pressure
1E+01
1E–01
1E–03
1E–05
1E–07
1E–09
1E+03
Measuring signal U[V]
0.0
Sensor error
underrange
overrange
1E+04
1E+02
1E+00
1E–02
1E–04
1E–06
1E–08
1E–10
1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
Pressure p [mbar]
p = 10
(U-7.75)/0.75+c
U p c
[V] [mbar] 0
[V] [Pa] 2
[V] [Torr] -0.125
where p pressure
U measuring signal
c constant (pressure unit dependent)
Gas Type Dependence
For gases other than air, the pressure in the indication range
p < 10
-3
mbar can be determined by a simple conversion:
p
eff
= C × pressure indicated
Gas
type
Calibration
factor C
Gas type Calibration
factor C
He
Ne
Kr
Ar
5.9
4.1
0.5
0.8
air, O
2
, CO, N
2
H
2
Xe
1.0
2.4
0.4
Installation
Vacuum Connection
DANGER
DANGER: overpressure in the vacuum system
>1 bar
Injury caused by released parts and harm
caused by escaping process gases can result if
clamps are opened while the vacuum system is
pressurized.
Do not open any clamps while the vacuum sys-
tem is pressurized. Use the type clamps which
are suited to overpressure.
DANGER
DANGER: protective ground
Incorrectly grounded products can be extremely
hazardous in the event of a fault.
The gauge must be electrically connected to the
grounded vacuum chamber. This connection
must conform to the requirements of a protective
connection according to EN 61010:
• CF connection fulfill this requirement
• For gauges with a KF flange, use a conduc-
tive metallic clamping ring
Caution
Caution: vacuum component
Dirt and damages impair the function of the
vacuum component.
When handling vacuum components, take ap-
propriate measures to ensure cleanliness and
prevent damages.
Caution
Caution: dirt sensitive area
Touching the product or parts thereof with bare
hands increases the desorption rate.
Always wear clean, lint-free gloves and use
clean tools when working in this area.
The gauge may be mounted in any orientation. To
keep condensates and particles from getting into the
measuring chamber, preferably choose a horizontal
to upright position.
The gauge is supplied with a built-in grid. For poten-
tially contaminating applications and to protect the
electrodes against light and fast particles, installation
of the optional baffle is recommended (
→ [1]).
Remove the protective lid and install the product to the
vacuum system, preferably without applying vacuum grease.
Protective lid
Clamp
Seal with centering ring
or
Seal with centering
ring and filter
Keep the protective lid.
Power Connection (BPG400)
The following information on the electrical con-
nection as well as the wiring diagram applies to
BPG400 only (
→ [1] and [2] for details on the
electrical connection and additional functions of
BPG400-SD, -SP and -SR).
Make sure the vacuum connection is properly made
(→ "Vacuum Connection").
If no connection cable is available, make one according
to the following diagram.
Electrical connection
Pin 2 Signal output (measuring signal) 0 … +10 V
Pin 5 Supply common, GND
Pin 7 Degas on, active high +24 VDC
Pin 8 Supply +24 VDC
Pin 10 Gauge identification
Pin 12 Signal common, GND
Pin 13 RS232C, TxD
Pin 14 RS232C, RxD
Pin 15 Shielding, housing, GND
Pins 1, 3, 4, 6, 9 and 11 are
not connected internally.
8
9
1
15
D-Sub, 15-pin
female,
soldering side
TxD
42kΩ
RxD
Measuring
signal
Degas
+U
b
13
14
2
12
7
8
5
15
+
1.25AT
Identification
10
RS232C
+
24 V
–
BPG400
tima03e1-c
(2010-04)
Original: German tima03d1-c (2010-04)
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