Endress+Hauser iTEMP TMT82 - Connecting the Power Supply and Signal Cables

iTEMP TMT82 Electrical connection
Endress+Hauser 19
-
+
A
TMT82
ON
6
3
7
4
8
5
1/+
2/- Test
8
7
6
5
6
4
3
1
2
Sensor input 2
Sensor input 1
Supply voltage
4...20 mA
HART
conn.
®
Test
RTD, 3- and 2-wire:Ω
RTD, 4-, 3- and 2-wire:Ω
white
red
red
white
white
red
red
TC, mV
TC, mV
(black)
(yellow)
(black)
A0019071-EN
 11 Terminal assignment of the DIN rail device
A To check the output current, an ammeter (DC measurement) can be connected between the "Test" and
"-" terminals.
In the case of the head transmitter in the field mount housing with separate terminal
compartment or the DIN rail version, a shielded cable must be used if the sensor cable length
exceeds 30 m (98.4 ft). The use of shielded sensor cables is generally recommended.
A minimum load of 250 Ω is required in the signal circuit in order to operate the HART
®
transmitter via the HART
®
protocol (terminals 1 and 2).
NOTICE
‣
ESD - electrostatic discharge. Protect the terminals from electrostatic discharge. Failure
to observe this may result in the destruction or malfunction of parts of the electronics.