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INZ-TN4ZAFE-E
Do not install the analyzer near power noise generat-
ing electric equipment (such as high frequency furnace
and electric welder). If the analyzer must be used near
such equipment, a separate power line should be used for
avoiding noise.
In case noise may enter from a relay, solenoid valve, etc.
through power supply, connect a varistor or spark killer to
the noise source as shown in right figure. If the varistor
or spark killer is located away from the noise source, no
effect is obtainable. So, locate near the noise source.
ZAF power supply
Varistor or
spark killer
Locate and connect
in close proximity
Noise source
When noise source is in the vicinity
3.5.2 Measured value output signal (standard terminals (4) – (5))
•
Output signal : 4 to 20 mA DC, 0 to 1 V DC, 0 to 10 mV DC (Can be select at the time of
order placement.) Isolated output
•
Allowable load : 4 to 20 mA DC, 550
Ω
or less
0 to 1 V DC, 0 to 10 mV DC, 100 k
Ω
or more
Note) The measured value output signal of this instrument is not isolated. To eliminate
the interference from unnecessary signals and the effect of external interference, we
recommend you to isolate signals.
3.5.3 Corrective input (optional terminals (3) – (4))
If interference corrective calculation is specified at the time of placement of an order, interference
gas (CO
2
or CH
4
) measured value is input.
1 to 5 V DC, 1 point
Note) The corrective input section of this instrument is not isolated. To eliminate the
interference from unnecessary signals and the effect of external interference, we
recommend you to isolate signals.
3.5.4 Contact input (optional terminals: DI1 (5) – (6), DI2 (7) – (8), DI3, (9) – (10))
•
Non-voltage contact input: Selecting ON/OFF closes/opens contact
•
Don’t apply voltage to terminals.
3.5.5 Contact output (optional terminals: Do1 (11) – (12), Do2 (13) – (14), Do3 (15) – (16),
Do4 (17) – (18), Do5 (19) – (20))
Contact capacity: 250V AC/2A resistive load
•
Relay contact output: Selecting ON/OFF closes/opens contact
Note) To eliminate the effect of external interference, separate the power cable from the
measured value output signal cable and contact input signal cable.