Casella CEL Apex personal sampling pumps - Manual (Page 9)

9
Improved Features
¤ Small size due to space-saving pump design
¤ Real-time display of flow rate on large LCD
¤ Direct flow control via keypad
¤ Multi language display
¤ Programmable run timer
¤ Data downloading via Infrared link
¤ Set up and data download of Advanced Models controlled by Pump Manager Software
¤ Two I.S. Versions available
Using the Keypad
Manual control is exercised via a simple four key pad.
Press once to switch the instrument ON,
Press and hold a moment to cancel a command,
Press and hold down to switch OFF.
Scroll up through available options or increase a displayed value.
Hold-down to use repeat function.
Scroll down through available options or decrease a displayed value.
Hold-down to use repeat function.
Press to accept a value or option, for example to start the pump,
Press and hold-down to stop the pump.
Figure 1: The Apex
1.INTRODUCTION
For many years, the name Casella has been associated with the design and manufacture of personal air
sampling pumps for the occupational health and hygiene market. The Apex series of pumps is an improved
replacement for models in the highly successful Vortex range.
These instruments use an efficient diaphragm pump whose flow rate is precisely maintained using
automatic flow control circuitry (Patent pending). The pump draws contaminated air through a sampling
head at a rate determined by the head design or sampling strategy. Four models are available. Check model
identity by referring to the the label on the rear panel.
Apex (standard model),
Apex Pro (can be downloaded and programmed by a PC),
Apex I.S. (Intrinsically Safe version of the standard model),
PROG.
SET FLO
o C
L/min
RESET
CAL I.R.
Inlet nozzle
Covered
outlet nozzle
Start/Stop
pump,
also acts as
an Enter key
Infra red port Red LED
blocked flow/
fault indicator
Green LED
pump running
indicator
Scroll up
through available
options,
or increase
displayed value
Scroll down
through available
options,
or decrease
displayed value
On/Off
also acts as
cancel key
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