Yokogawa JUXTA VJAK Bedienungsanleitung PDF herunterladen (Seite 6)

12. MAINTENANCE

The product enters the operable status as soon as the power is

turned on, but requires 10 to 15 minutes of warm-up to meet

the performance requirements.

12.1 Calibration Apparatus

● Calibrator (Yokogawa Meters & Instruments’ CA71 or

equivalent): 1

● Setting tool for adjustment (Refer to “8.2 Connecting the

Setting Tools” in this manual.)

12.2 Calibration Procedure

(1) Connect the instruments as shown in Fig.12.1 and Fig.

8.2.

(2) Produce the input signal equivalent to 0% of the input

range from the calibrator to the product. Then, read the

input value of Display items, “A01: INPUT1” using the

VJ77 or JHT200 and check that the input value is within

the rated accuracy range. Take the same procedure for

the input signal equivalent to 25, 50, 75 and 100% of the

input range and check that the input values are within

the rated accuracy range.

For alarm output, check the relay action by the alarm in-

dicator lamp or resistance of output terminals.

If the input values are out of the rated accuracy range,

adjust the input signal level referring to the user’s

manual for VJ77 PC-based Parameters Setting Tool (IM

77J01J77-01E) or for JHT200 Handy Terminal (IM JF81-

02E).

1011

3 2

789

GND

ALM2 (NO)

COM

ALM1 (NO)

COM

Calibrator

Input

With SINK current

Without SINK current

Alarm-2 output

Alarm-1 output

Power supply

L+

N–

–

Calibrator

–

Fig. 12.1

1 2 3 4 5 6

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