Trigon TM BAG552 SingleGauge
Bayard-Alpert Hot Ion Gauge
For applications that require stand alone hot ion gauge
technology, the TrigonTM family contents the single
technology Bayard-Alpert Hot Ion Gauge BAG552.​ The
BAG552 is designed for vacuum measurement of gasesin the pressure range 5 × 10-10 ... 2 × 10-2 mbar.​ The
supported dual filament offers superior accuracy,
repeatability and longevity. The removable calibration
data chip, that comes along with the easy to install
BAG552 spare sensor, to secure a seamless accurate
process measurement, enables a higher bakeability ofthe sensor unit.​ BAG552 is available with analog outputor EtherCAT interface option. Both enable easiest
system integration. ​ The TrigonTM BAG552 can also be
operated in conjunction with the INFICON Vacuum
Gauge Controller series VGC501, VGC502, VGC503 orwith other control devices.

ADVANTAGES• pure Bayard-Alpert measuring system for a wide UHV & HV measurement range• 2 filaments for Bayard-Alpert system• Galvanic isolated electronics to avoid electric stray current• Sliding emission mode to avoid pressure jumps and freeze when switching the emission stream• Extended bakeability due to removable calibration data chips• Set point relays• Bright & big OLED display (90° rotateable) with user interface• Analog output, RS232C serial interface, EtherCAT®
• Usable in conjunction with VGC50x Controller series• RoHS compliance

1TrigonTM BAG552 SingleGaugeTrigon TM BAG552 SingleGauge
ORDERING INFORMATION

3 B A 1 – G0 6 – 2 3 0 0Unitmbar
TorrPaDigital interface

0120G

None (analog out & RS232)
EtherCATFlange
DN 25 ISO-KF
DN 40 CF-R

2TrigonTM BAG552 SingleGauge

68Options
2B

2 setpoints
OLED & 2 setpoints

Trigon TM BAG552 SingleGauge
SPECIFICATIONSTypeBAG552

Measurement range (air, O2, CO, N2)
Accuracy 1 × 10-8 … 2 × 10-2 mbar
Repeatability
Switching threshold-10… 2x10-2 mbar, continuous±15% of reading
5% of reading, 10-8 … 2 × 10-2 mbar (after 10 min. stabilization)
5×10

on

2.4×10-2 mbar

offEmission current

3.2×10-2 mbar

Sliding mode (default)p ≤ 8 × 10-7mbar-3p > 1 × 10 mbar

5 mA
25 µATwo-Point-Modep ≤ 7.2 × 10-6mbar

5 mA

3.0 × 10-5 mbar < p < 3.2 × 10-2mbar

25 µA

Emission current switching
25 µA -> 5 mA

7.2×10-6 mbar

5 mA ->25 µA
Degas

3.0×10-5 mbar

Emission current (p < 7.2 × 10-6 mbar)
Control input signal
Duration
Output signal
Measuring range≈16 mA (Pdegas ≈4 W)
0 V/+24 V (dc), active high≤3 min, followed by automatic stop. A new degas cycle can only be started after awaiting time of 30 min
0 … +10 V+0.57 … +8.176 V (5×10-10 … 2×10-2 mbar)

Relationship voltage-pressure

1 V/decade, logarithmic

Error signal+0.1 V (EEPROM error)+0.3 V (BA sensor error)

Minimum load impedancePower supply

10 kΩ

Supply voltage at the gauge+24 V (dc) (+20 … +28 V (dc))

Ripple≤2 VppCurrent consumption
Standard≤0.5 ADegas≤0.9 A

Emission start (< 200 ms)≤1.4 A

Power consumption
BAG5523≤18 W

BAG552 with EtherCAT≤21 W

Fuse necessary

1.25 AT

TrigonTM BAG552 SingleGaugeTrigon TM BAG552 SingleGauge
TypeBAG552

Sensor cable connection
Receptacle
Measuring cable

D-sub 15-pin, maleshielded, number of conductors depending on the functions used, max. 15-pin
plus shielding

Cable length (supply voltage 24 V)
Analog and fieldbus operation≤35 m (0.25 mm2 / conductor)≤50 m (0.34 mm2 / conductor)≤100 m (1.0 mm2 / conductor)

RS232C operation≤30 mGauge identification
Switching functions

42 kΩ resistor between pin 10 and pin 5

Setpoints
Adjustment range
Relay contact rating
Admissible temperature
Storage

5×10… 2x10-2 mbar

≤60 V (dc) / 0.5 A (dc), resistive–2 … +70 °C

Operation

0 ... +50 °C

Bakeout+150 °C (at vacuum connection, without electronics unit and calibration print,horizontally mounted)≤65% / 85% (no condensation)year's mean / during 60 days
Diagnostic port connection, RS232C, Jack connector. 2.5 m, 3-pin
stainless steel, NiFe, nickel plated, Hastelloy, glass, iridium, yttrium oxide (Y2O3),

Relative humidity
Interface (digital)
Materials exposed to vacuum
Internal volume
DN 25 ISO-KF
DN 40 CF-R
WeightPressure max.
Mounting orientation
Degree of pollution
Degree of protection

4SP1, SP2-10TrigonTM BAG552 SingleGauge≈24 cm3≈34 cm3
550 ... 760g
5 bar (absolute)
any2IP40

Trigon TM BAG552 SingleGauge
SPECIFICATIONS INTERFACES
RS232C
Data rate
Data format

9600 Baudbinary, 8 data bits, one stop bit, no parity bit, no handshake

EtherCAT®
ProtocolCommunication standards
Process Data
EtherCAT connector
Cable
Cable length
Data rate

5TrigonTM BAG552 SingleGauge

EtherCAT®
Semiconductor Device Profile
ETG.5003 Part 1 Common Device Profile
ETG.5003 Part 2080 “Specific Device Profile - Vacuum Pressure Gauge"
Fixed PDO mapping and configurable PDO mapping
RJ45, 8-pin (socket), IN and OUT
Shielded Ethernet CAT5e or higher≤100 m (330 ft.)
100000 Kbps

Trigon TM BAG552 SingleGauge
DIMENSIONS

[mm]

4949

14267

424214267.5
33

DN 25 ISO-KF

DN 40 CF-R.533

www.inficon.com

reachus@inficon.com

Due to our continuing program of product improvements, specifications are subject to change without notice.
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