Waterpilot FMX21
Electrical connection
Hauser
33
1
2
3
4
FXN520
A0018763
1
HART master, e.g. PLC (programmable logic controller)
2
Multidrop Connector FXN520
3
TMT72 temperature head transmitter
4
Device
Use an external temperature signal which is transmitted to the FMX21 via HART
burst mode
The device is available with an optional Pt100 temperature sensor. With this option, the
signal of the Pt100 is evaluated with a HART-compliant temperature head transmitter
(min. HART 5.0) that supports the burst mode. The temperature signal can be transmitted
to the device in this way. The device uses this signal for density correction of the level
signal.
The TMT72 temperature head transmitter is not suitable for this configuration.
FXN520
4
1
2
3
A0018764
1
Fieldgate FXA520
2
Multidrop Connector FXN520
3
HART-compatible temperature transmitter with burst function (e.g. TMT82)
4
Device
Without additional compensation due to the anomaly of water, errors of up to 4 % may
occur at a temperature of +70 °C (+158 °F), for example. With density compensation, this
error is less than 0.5 % in the entire temperature range from 0 to +70 °C (+32 to +158 °F).
For additional information, see → 58.
For further information on the devices, please refer to the relevant Technical
Information:
• TI01010T: temperature transmitter TMT82 (4 to 20 mA HART)
• TI00369F: Fieldgate FXA520
• TI00400F: Multidrop Connector FXN520
6.7
Post-connection check
• Are the device or cables undamaged (visual check)?
• Do the cables used comply with the requirements?
• Do the mounted cables have adequate strain relief?
Summary of Contents for Waterpilot FMX21
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