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10 SPECIFICATION
Display
Measured value:
5-digit x 7-segment back-lit l.c.d.
Information:
16-character, single line, dot matrix back-lit l.c.d.
Ranges:
0 to 14pH, –1000 to 1000mV.
Minimum range:
Any 5pH units or 300mV.
Resolution:
0.01pH, 1mV.
Accuracy:
±1% f.s.d.
Linearity:
±0.2%f.s.d.
Temperature compensation:
–10 to 110°C (14 to 230°F) manual or automatic using
Pt100 resistance thermometer.
Set Points and Relays
No. of set points:
Two.
Set point adjustment:
Programmable.
Set point hysteresis:
±1% of f.s.d. (fixed)
Local set point annunciation:
Red l.e.d.
No. of relays:
Two.
Relay contacts:
Single pole changeover.
Rating:
250V a.c.
Loading:
(non-inductive) 750VA
(inductive)
75VA
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.
Accuracy:
±0.25% f.s.d. or ±0.5% reading.
34
250V d.c. max.
3A a.c.
3A d.c. max.
30W max.
3W max.
Output ranges:
Retransmission 1:
Programmable – pH or Redox(ORP)
pH – as per retransmission 1
Redox(ORP) – –1000 to 1000mV, min. span 150mV
Retransmission 2 (optional):
Programmable – pH, Redox(ORP) or Temperature
pH – as per retransmission 1
Redox(ORP) – –1000 to 1000mV, min. span 150mV
Temperature – –10 to 150°C (32 to 302°F),
min. span 20°C (36°F)
Resolution:
0.1% of f.s.d.
Maximum load resistance:
750Ω (20mA max.).
Serial communication:
RS422/RS485 (optional).
Power Supply
Voltage requirements:
100 to 130V or
200V to 260V, 50/60Hz.
Power Consumption:
< 6VA.
Error due to power supply variations:
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 130°F).
Storage temperature limits:
–25 to 70°C (–13 to 158°F).
Operating humidity limits:
Up to 95%RH non-condensing.
Mechanical Data
Mounting:
Model 4630/31 wall-mounting,
Model 4635/36 panel-mounting.
Protection:
Model 4630/31 – IP66, Model 4635/36 – IP66 front.
Overall dimensions:
Model 4630/31 – 160 x 250 x 68mm
(6.3 x 9.84 x 2.68in.) – see Fig. 3.2.
Model 4635/36 – 96 x 96 x 191mm
(3.78 x 3.78 x 7.52in.) – see Fig. 3.4.
Panel cut-out:
+0.8
+0.8
92
x 92
mm (3.62
–0.0
–0.0
Weight:
Model 4630/31 – 2kg (4
Model 4635/36 – 1.5kg (3
+0.03
+0.03
x 3.62
in.)
–0.00
–0.00
1
/
lb).
2
1
/
lb).
4
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