The Interface Solution Experts
13
THZ
2
&
TDZ
2
Programmable Smart HART
Temperature Transmitter and Display
Figure 7.
THZ
2
(HPP) and TDZ
2
(HP) Hook-Up Diagrams
+
–
12-24Vdc
Power
Supply
THE HART Communicator
or the PC can be connected
at any point on the output
side of the loop. Total loop
resistance must equal between
250 and 1100 ohms for proper
HARTcommunications.
Current Meter
Load=250 ohms
+
–
+PS
2
3
4
1
–PS
PC
OR
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
+
–
2-Wire RTD
or Decade
Resistance Box
Thermocouple
and Millivolt Input
3-Wire RTD
or Decade
Resistance Box
4-Wire RTD
or Decade
Resistance Box
Potentiometer
Input
2
3
4
1
Input Hook-Up Connections
HART Modem
connects to
serial (COM)
port of PC
+
–
12-24Vdc
Power
Supply
THE HART Communicator
or the PC can be connected
at any point on the output
side of the loop. Total loop
resistance must equal between
250 and 1100 ohms for proper
HARTcommunications.
Current Meter
Load=250 ohms
+
–
PC
OR
HART Modem
connects to
serial (COM)
port of PC
+PS
-PS
1
2
3
4
TDZ
2
THZ (HPP) Hook-Up
2
TDZ (HP) Hook-Up
2
NOTE:
1. Terminal blocks can accommodate 14-22 AWG (2.0-0.3mm ) solid wiring.
2. HP Housing terminals utilize M2.6 screws. Tighten terminals to 2.8 in lb (0.31Nm) (maximum).
3. HPP Housing terminals utilize #4 screws. Tighten terminals to 4.7 in lb (0.53Nm) (maximum).
2
To serial
(COM) port
of PC
To USB
(COM)
Port of PC
OR
To serial
(COM) port
of PC
To USB
(COM)
Port of PC
OR
