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<4. OPERATION>
4-4
IM 12E04A02-02E
9th Edition : Mar. 16, 2018-00
4.1.9 Supplying Sample and Adjusting Flowrate
(1) Press the converter [mode] key to got the <MEAS.> mode.
(2) Place the hand-operated valve in a measuring status (see Section 4.2, Table 4.1).
Note 1: Valves SV1 to SV4 are automatically brought to the measuring status when the <MEAS.> mode is selected.
(3) Supply the specified flow (2 to 10 L/min) of sample.
Note 2: For the model with the specifications for no sampling system and no automatic cleaning or zero calibration (Suffix code: -NN,
-KC), set the flowrate of the Sample at 1.5 to 2 L/min.
4.2 Operation
This section describes measurement in the <MEAS.> mode, the on/off operation of each valve in
automatic cleaning and automatic zero calibration, and the settings related to operation.
4.2.1 Starting Measurement
When the [MODE] key in the converter is pressed to move to the <MEAS.> mode, the internal
timer starts and analog output hold (set when shipped form the factory) is reset according to the
predetermined specifications.
The maintenance contact outputs (M1 and M2) also open (set when shipped from the factory)
and the mode information is output only once to the digital output (see the contact output
operation in Subsection 3.3.5 and digital communication specifications in Section 2.1).
Table 4.1 shows valve status in the <MEAS.> mode. Valves SV1 to SV4 automatically operate
according to the predetermined specifications. The statuses shows in Table 4.1 are those when
no automatic cleaning or automatic zero calibration operates.
Table 4.1 Value Statuses When Measurement Is Carried Out
Suffix codes
V1
V2
V3
V4
V5
SV1
SV2
SV3
SV4
-A1
Open
Closed Closed Closed Closed
—
—
—
—
-A2
Open
Open
Closed
Open
—
Closed Closed
—
—
-A3
Open
Open
Open
Open
—
Closed Closed
Open
Closed
Содержание EXA TB TB400G
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