ABB 4623, Руководство пользователя

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26
Display
Measured value:
5-digit, 7-segment back-lit l.c.d.
Information:
16-character, single line, dot matrix back-lit l.c.d.
Ranges:
programmable 0 to 1.00
µ
S/cm up to 10.00
µ
S/cm
Scaling:
µ
S/cm at xx
°
C (
°
F).
Accuracy:
±
1% f.s.d.,
±
1 digit.
Linearity:
±
0.2% f.s.d.
Resolution:
±
0.1% f.s.d.
Temperature measuring range:
–10
°
C to 110
°
C (14 to 230
°
F).
Temperature compensation:
–10
°
C to 110
°
C (14 to 230
°
F) automatic.
Temperature coefficient:
Fixed at 2.0%/
°
C (1%/
°
F).
Temperature sensor:
Pt100 resistance thermometer.
Reference temperature:
25
°
C (77
°
F) fixed.
Set Points and Relays
No. of set points:
Two.
Set point adjustment:
Programmable.
Set point hysteresis:
±
1% of setpoint (fixed).
Local set point annunciation:
Red l.e.d.
No. of relays:
Two.
Relay contacts:
Single pole changeover
Rating:
250V a.c. 50V d.c. max.
3A a.c. 3A d.c. max.
Loading:
(non-inductive) 750VA 30W max.
(inductive) 75VA 3W max.
Insulation, contacts to earth:
2kV r.m.s.
Retransmission
No. of retransmission signals:
One, fully isolated – standard.
Two, fully isolated – optional.
Output current:
0 to 10, 0 to 20 or 4 to 20mA programmable.
Output ranges:
Retransmission 1:
Zero – 0, fixed.
Span – 10 to 100% of the display range.
Retransmission 2 (optional):
Programmable – Conductivity or Temperature
Conductivity
– as per Retransmission 1
Temperature – 10 to 150
°
C (14 to 302
°
F),
min. span 20
°
C (36
°
F)
Accuracy:
±
0.25% f.s.d.
Resolution:
0.1% of f.s.d.
Max. load resistance:
750
Ω
(20mA max.).
Serial communication:
RS422/RS485 (optional).
Power Supply
Voltage requirements:
115V nom.
±
15V, 50/60Hz.
230V nom.
±
30V, 50/60Hz
Power consumption:
< 10VA a.c.
Error due to power supply variation:
less than
±
2% for +6% -20% variation from nominal supply
voltage.
Insulation:
mains to earth 2kV r.m.s.
Environmental Data
Operating temperature limits:
–20
°
to 55
°
C (–4 to 131
°
F).
Storage temperature limits:
–25
°
to 55
°
C (–13 to 131
°
F).
Operating humidity limits:
up to 95% RH non-condensing.
Mechanical Data
Mounting:
Model 4623 wall mounting, Model 4628 panel mounting.
Protection:
Model 4623 IP66, Model 4628 IP66 (front only).
Overall dimensions:
Model 4623 – 160 x 250 x 68mm
(6.3 x 9.84 x 2.68in.) – see Fig. 3.3
Model 4628 – 96 x 96 x 191mm
(3.78 x 3.78 x 7.52in.) – see Fig. 3.5
Panel cut-out:
92
+0.8
–0.0
mm x 92
+0.8
–0.0
mm (3.62
+0.03
–0.00
x 3.62
+0.03
–0.00
in.)
Weight:
Model 4623 – 2kg (4 1 /
2
lb)
Model 4628 – 1.5kg (3 1 /
4
lb)
10 SPECIFICATION