Thermo Scientific Alpha RES 1000, Руководство пользователя

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Operating Instructions Alpha RES 1000
17
7.4.5 Maximum Pulse Length (tPL) or Maximum Frequency (FPF)
Note: If the controller type “oFF” or “L.Ct” is set, the parameters listed in 7.4.4 and 7.4.5 are blanked out.
This mode lets you set the maximum pulse length or the maximum frequency at which the relay will operate.
1) Follow directions in 7.4.1 to enter Controller mode.
2) Press the ENTER key. Scroll until the lower display shows “t.PL” or
“F.PF”.
10.0
t.PL
HOLD SETUP
-
In PLC (pulse length) mode: The lower display shows “t.PL” to indicate
pulse length. The upper display shows your current pulse length. You
can select any value from 0.5 to 20 seconds.
-
In PFC (pulse frequency) mode: The lower display shows F.PF to
indicate pulse frequency. The upper display shows your current
maximum pulse rate. You can select any value from 60 to 120 pulses
per minute. When the measured value exceeds the Proportional Band
in 7.4.4, the controller will pulse the relay at this rate.
60
F.PF
HOLD SETUP
3) Press the
Δ
and
∇
keys to choose the period duration or maximum
frequency, depending on your mode.
4) Press the ENTER key to confirm your selection and to return to
Advanced Set-up mode, or return to Measurement mode by pressing the
Δ
and
∇
keys simultaneously (escape).
7.5 Measurement Range sub-function
In this sub-function, appropriate range is selected with the appropriate cell constant.
7.5.1
Entering the Measuring Range sub-function
1) Enter Advanced Set-up mode. Push ENTER key and scroll to Advanced Set-up security code “22”.
Push ENTER key.
2) Press
Δ
or
∇
keys to scroll until upper display shows “rng”.
7.5.2 Selecting Measuring Range sub-function
rng
HOLD SETUP
1) Follow directions in 7.5.1 to enter Controller mode and press ENTER
key.
2) Press
Δ
or
∇
keys to select correct range. (Please refer to 7.5.3 for full
list of measurement ranges). Note the upper display shows maximum
measurement range, while lower display shows Cell constant. Lower left-
corner of LCD displays the number corresponding to the respective range.
3) Press ENTER key to confirm.
20.00
0.01
HOLD SETUP
m
Ω
4) Proceed to 7.5.4 to set current output or return to Measurement mode by
pressing
Δ
and
∇
keys simultaneously (escape).
1