Transmitter AMS 3220

The Transmitter AMS 3220 is the control, support and evaluation unit for the AMS flue gas probes. The Transmitter AMS 3220 is connected to the flue gas probe via a 6 wire armoured signal cable. Over the signal cable the Oxygen flue gas probe is supplied with current for the heater of the ZrO2 sensor. The signals from the ZrO2 sensor are reported to the Transmitter for evaluation.

The display of the Transmitter shows the actual measuring values, the status signals and all other relevant signals from the ZrO2 sensor, such as heater current, Offset readings and Messages. The actual Oxygen concentration measured by the ZrO2 sensor is provided as potential free analogue signal or RS 232 digital signal. Additional values are available as potential free contacts.

AMS 3220

The calibration of the ZrO2 sensor is controlled by the transmitter AMS 3220. During a calibration the last measuring value is "frozen" at the analogue signal port. The status signal will report "Service".

Usually the transmitter AMS 3220 is mounted in the GRP housing of the pneumatic unit. The housing of the the transmitter AMS 3220 is rated to IP 65. For installation of the Transmitter in Ex-Zone 1/2 AMS provides a housing rated Ex-d.

In combination with the Transmitter AMS 3220 the AMS ZrO2 Flue gas probes are certified by the German TÜV according European and German environmental regulations and fulfils the requirements for QAL 1 according to EN 14181 and EN ISO 14956. Registration No. 936/807023/A.

The Transmitter AMS 3220 can be used with any AMS Flue gas probe.


Technical data

Transmitter AMS 3220
Application Certified for flue gas applications according
European and German environmental regulations
Measuring principle ZrO2 sensor with Pt-electrodes
Probes AMS 3211-000 / 500 / 600 / 700 / 860 Ex
Measuring range 0 … 25 Vol%
Analogue signal port (0) 4 … 20 mA or 0 … 10V, galvanically separated
Reproducability +/- 2 % of the measuring value
Resolution C(O2) – 0,01 %
T90-Time < 20 Seconds
Display 2* 20 digit, illuminated LCD display
1. Line: display of concentration in Vol %
2. Line: messages, device status, sensor parameters
Messages 1 System message (measuring value yes / no)
max. 2 messages configurable as measuring values
Digital communication serial interface RS232
Ambient operation temp. + 5 °C up to + 45 °C
Power supply 24 / 110 / 230 VAC
Protection / Housing / Dimensions IP65 / wall mounting housing / ca. 300 x 320 x 130 mm (hxbxt) / Ex-d housing II 2GD Ex d IIB+H2 T6 IP65 / 300 x 400 x 200 mm (hxbxd)
Approvals TÜV certification 936/807023/A of 14.08.2000
Weight 8 kg
Options automatic calibration by using a pneumatic unit
pneumatic unit for supplying the probes with reference gas and / or calibration gas
Version: AMS 3220 E V-2013-07