Pressure Or Temperature Input Wiring - YOKOGAWA ZR22G User Manual

ZR802G
Converter
AC-ZERO
AC-SPAN
AC-COM
Figure 5.14
5.2.10

Pressure or Temperature Input Wiring

(Only for Humidity Analyzer)
When inputting the measurement gas pressure or temperature from external of the equipment,
connect a two-wire pressure or temperature transmitter (hereinafter referred to as transmitter).
The relative humidity and dew point are acquired based on the temperature signal from the
connected transmitter, in the case where the setting is "Pressure or Temperature input selected"
and "external input". As for the wiring of the temperature transmitter and thermocouples, refer to
appropriate temperature transmitter instruction manual.
Converter
AI(+)
AI(-)
FG
Figure 5.15
Applicable Temperature Transmitter
l
Apply a transmitter that is suit for the following interfaces:
Output signal: 4 to 20 mA DC, two-wire system (*1)
Maximum supply voltage from the analyzer:
Input resistance of the analyzer: Maximum 250 V (The load resistance of the transmitter is the
(*1) When /AI is specified, the use of 4-wire transmitter eliminates the supply voltage of the transmitter. Prepare it separately.
Temperature Transmitter Burnout
When outputting a burnout signal of the temperature transmitter with a contact output of the
analyzer, use "high/low-limit pressure (temperature) alarm". (Refer to Section 8.4, "Contact
Output Setting.") In this case, set the burnout signal of the transmitter to exceed the high limit (20
mA or more).
Cable Specifications
Use a two-core shielded cable for wiring.
Wiring Procedure
(1) M4 screws are used for the converter terminals. Cables should be equipped with
appropriate crimp contacts. Ensure that the cable shield be connected to the FG terminal of
the converter.
(2) Be sure to connect "+" and "-" polarities correctly.
ZR40H Automatic
Wiring for Automatic Calibration Unit
Shielded cables
Pressure or temperature input wiring
total of wiring resistance and input resistance.)
Calibration Unit
Zero
Span
Pressure Temperature
transmitter
+
-
25.2 V DC
<5. Wiring>
F5-14E.ai
IM 11M12G01-02EN 1sh Edition : Mar. 25, 2021-00
5-12