Prothermo NMT81 Operability
Endress+Hauser 47
7.3 Operation via HART master connecting with devices
The local display of NMT81 is an option to display measured values, faults and notice
messages. The display cannot be used for operation. Operation can be done by the local
HART master device (e.g. NMS8x), the remote display (e.g. DKX001). The scope of
operation depends on each device. Refer to the respective operating manual for further
assistance.
• Establishing the connection between the local HART master devices, remote display, or
FieldCare and the NMT81
• Setting via the local HART master devices, remote display, and FieldCare
• Operating via the local HART master devices, remote display, and FieldCare
Remote display can connect to the HART master devices when the devices are either
of NMS8x, NMR8x, and NRF81 however remote display cannot connect directly to the
NMT81.
7.4 Display of NMT81
The device has an illuminated liquid crystal display (LCD/option) that shows measured
values.
The following shows standard view of NMT81 and meanings of icons.
000.00
K
0 10 20 30 40 50 60 70 80 90 100
1
2
3
4
5
6
A0042794
43 Standard view
1 Status area
2 Measured value
3 Status area of output value as a percentage (%)(see NOTE.)
4 Error number status area
5 Measuring unit status area
6 Alarm status area
The status area of output value [3] shows measuring value (liquid, product, or water
temperature) as a percentage (%) which is selected by PV selector based on the
parameters of Temperature Lower Range Value and Temperature Upper Range Value.
(e.g.) When selecting liquid temperature in PV selector, it shows 0 (low range value)
if the liquid temperature is –40 °C (–40 °F) and shows 100 (upper range value) if the
liquid temperature is 70 °C (158 °F).
Status symbols
Symbol Meaning
A0042797
HART communication
Flashing when communicating via HART
A0042796
Device locked
The device is locked via software
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