Instruction manual

2 Installation
14
2.3.3 Connecting the transmission output cable
A signal of 4 mA to 20 mA DC corresponding to the measurement range is output.
The maximum allowable input resistance of the receiver device is 900 Ω.
Select an appropriate receiver device (recorder or meter relay).
1. Connect the cable to the terminal block referring to the figure below.
Use a shielded wire for the transmission cable.
2. Ground the shielded line via the grounding terminal of the receiver device side.
When two or more receiver devices are connected.
Connect them in a series as shown in the figure below.
The allowable total resistance of the connected receiver devices is max 900 Ω.
Up to 900 Ω
Transmission output
4 mA to 20 mA DC
(insulation output)
The maximum load
resistance: 900 Ω
Shield
Grounding terminal
Receiver device
Receiving
resistance up to
900 Ω
Shield
OUTPUT (mA)
(+)
(-)
Mandatory
Install lightning arresters both at the instrument and receiver device.
Receiver device 1
Receiver device 2
Receiving resistance 1
Receiving resistance 2
OUTPUT (mA)
(+)
(-)