Barnstead International MaxQ 4000 Manual page 8

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ENERAL PECIFICATIONS
8
The Barnstead|Lab-line MaxQ 4000 series of bench top,
incubated and refrigerated shakers are available in either
analog or digital control configurations:
• A-Class shakers: SHKA4000, SHKA4000-1CE,
SHKA4000-5, SHKA4000-6CE, SHKA4000-7,
SHKA4000-8CE: control temperature by a
Proportional/Integral/Derivative (PID) micro-
processor-based controller. Solid-state control
maintains time and speed and is adjustable with
rotary dials. Analog tachometer displays speed
in RPM, verifying accuracy of speed setting.
Refrigerated units feature environmentally safe
CFC free insulation and coolant.
• E-Class shakers: SHKE4000, SHKE4000-1CE,
SHKE4000-5, SHKE4000-6CE, SHKE4000-7,
SHKE4000-8CE: control temperature, time and
speed by a Proportional/Integral/Derivative (PID)
microprocessor-based controller that is
adjustable with membrane switches on a key-
pad in 1 rpm increments. Refrigerated units
feature environmentally safe CFC free insulation
and coolant. Flashing display indicates power
interruption. Pressing any key will clear display.
Non-volatile memory maintains speed and time
set points in the event of a power interruption.
Speed and time set points are automatically
reactivated after power is restored.
• Temperature range and accuracy follow. All
units have a uniformity of ±0.5°C at 37°C in
flask:
Standard Temperature: SHKA4000,
SHKA4000-1CE, SHKE4000,
SHKE4000-1CE, 10°C above ambient
to 60°C, ±0.1°C at 37°C in flask.
High Temperature: SHKA4000-5,
SHKA4000-6CE, SHKE4000-5,
SHKE4000-6CE, 10°C above ambient
to 80°C, ±0.1°C at 37°C in flask.