Casella CEL
Page 23 of 27
11. TECHNICAL INFORMATION / CERTIFICATION
1
PUMP MODEL SPECIFICATION
Flow Range
Tuff 3 : 0.5 to 3.5 l/min,
Tuff 4 : 0.5 to 4.5 l/min (free air).
(all variants :5 to 850 ml/min with low
flow adaptor).
Flow Control Accuracy
<±5% for selected flow,
±3% for calibrated point,
Battery Voltage and Capacity
4.8 V NiMH / 2.7 Ah or
1.7Ah
Inlet Pulsation Ratio
< 10% using Dewell Higgins Cyclone
@ 2 L/min approx. 7.5 cm H
2
O.
Satisfies EN1232 , NIOSH 0600
Displayed Values (model dependant)
Real flow rate, volume sampled,
elapsed sample time, temperature,
operating mode, program details
battery fuel gauge, alarm status
Service Interval
Typically 2500 hrs
Operating Temperature
5
o
C to 45
o
C
Storage Temperature
-10
o
to + 50
o
C
Charging Technique
Drop-in Intelligent fast charger
employing dT/dt termination with safety
time out.
Standby trickle charge mode to keep
pump ready for use.
Typical Charge Time (charge time is dependant upon,
ambient temperature, discharged state and condition of
batteries)
Typically 3 hours under normal
operating conditions.
Memory Protection Time with Main Battery Pack
Removed
Approximately 20 minutes
Communications Infrared
transducer (via RS232-infrared
computer link)
Recorded Values
Start & stop times, flow rate, average
sample temperature, volume sampled
and errors.
Dimensions
Approximately 133 x 87 x 47mm
Weight (including battery)
Approximately 475 g
