pressed once again.
Once the first boiling point has
been found an exchange on the
manual mode is possible by pres-
sing the MAN key. The „bP“ value
will be retained as temporary pres-
sure setpoint.
The automatic mode can be stop-
ped by pressing the STOP key
at any time.
6. Changing of Pressure unit
The physical unit indicating the pressu-
re can be chosen between mbar and
torr.
When the controller is switched
off, press the AUTO-Key
and
switch on the contoller with the
On/Off-Switch
at the same time.
With the DOWN-Key
and the
UP-Key
you can choose bet-
ween the units hPA (mbar) and torr.
The LEDs for mbar
and torr
show the selected pressure unit.
Press STOP-Key
.
The new pressure unit will be
stored after 5 seconds.
The contoller changes to the
operating mode.
7. Calibration
Whilst pressing the SET key,
switch on the Vacuum Controller.
The "mode" display shows "CAL“.
If the "mode" display does not
show "CAL“, press SET key.
The "mode" display shows
"CAL“.
Press the
UP
key.
The "setp“ display shows "H1“ .
Insert the actual atmospheric pres-
sure, using the UP or DOWN key.
Press SET key to override.
8. Trouble
Shooting
Sufficient vacuum is not reached
Possible reasons:
Tube connections are not tight, or
an external valve is open.
LABOBASE® Systems
All workstations together demand
a flow rate that exceeds the capa-
city of the pump.
Fault of central vacuum system/
vacuum pump (see LABOBASE
Operating Manual).
LABOPORT®-Systems
See LABOPORT Operating Manual.
Vacuum controller does not work
Possible reasons:
Vacuum controller is not
switched on.
Mistake in operating the vacuum
controller.
The fuse of the vacuum controller
has been triggered.
After a short period the vacuum
controller is re-actived automati-
cally.
For LABOPORT Systems:
see LABOPORT Operating Manual.
Vacuum Controller shows
unrealistic values
Please contact KNF.
9. Specifications
Pressure range:
1400 - 1 mbar (absolute)
Measuring accuracy:
Linearity typ. +/- 0,15 % FS;
max. +/- 0,35 % FS;
consi/- 0,1 % FS
Warm-up time to reach the above
figures: 10 mins
Definition: 1 mbar
Working temperature: 0 to 40 ° C
Storing temperature:
-10 °C to + 50 °C
Dimension:
about. 145 x 85 x 55 mm
Weight: about. 380 g (without
fastening)
Power supply:
90 - 260 V, 50/60 Hz, 10 VA
Fuse protection:
280 mA (internal)
Electrical connections:
2 circular connectors (six chan-
nels) for external valves or
control print (24 V DC).
10. Ordering Information
10.1 Accessories
Order-No.
Coolant valve PP with
flange connector G 1/2
and hose connector for
tube ID 8
045075
10.2 Vacuum Controller and
Vacuum Valves
For LABOPRT® Systems: see LABO-
PORT Operating Manual.
Order-No.
Vacuum Controller NBC 800
complete, without Vacuum
Valve
045258
Vacuum Valve PP with two
hose connectors for
tube ID 10
046007
Vacuum Valve PP with
flange connector G 1/2 and
hose connector for
tube ID 10
045078
The vacuum controller NBC 800 is avai-
lable on option with a RS232 interface.
KNF Neuberger UK Ltd
Ave 2, Station Lane Ind Est
Witney, Oxfordshire, OX28 4FA
Tel: +44 (0)1993 778373
Fax: +44 (0)1993 775148
E-mail: [email protected]
www.knf.co.uk
8
Translation of original Operating Instructions, english, KNF 121205-121650 02/10
Summary of Contents for Laboport N810
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