PolyScience DA500 User Manual

Menu Item Description Choices / Ranges Default Setting
Ub Upper Band — This sets how many degrees the process
temperature can rise above set point before the compressor
will turn ON. It is displayed and settable in °C only.
1.0° to 5.0°C
Always displayed
and set in °C
2.0°C
C1
C2
C3
Calibration Offset — Allows the Chiller’s displayed and
control or externally sensed temperature to match an
independent traceable standard. The Calibration Offset is
displayed and settable in °C only.
C1 — Internal calibration offset
C2 — External calibration offset
C3 — External calibration offset
NOTE: A special keystroke sequence is required to adjust the
Calibration Offset. See Calibration Offset.
±2.9°C
Always displayed
and set in °C
0.0°C
Cd Compressor Delay — Allows the operator to set the minimum
amount of time allowed from when the Compressor turns OFF
to when it turns back ON again.
NOTE: When the Compressor turns OFF because it has
reached the Lb value, it will remain OFF until both the Ub (°C)
value has been reached and the Cd (delay time) value has
expired.
10 to 300 seconds 20 seconds
Fc Flow Rate Calibration — Allows adjustment of the displayed
flow rate to match that of a known standard.
NOTE: During Flow Rate Calibration, the left hand LCD
displays the desired flow rate in GPM. The right hand LCD
displays the Gain value.
NOTE: A special keystroke sequence is required to adjust the
Flow Rate Calibration. See Flow Rate Calibration.
Varies
Record current
Gain value for
reference
dS Coolant Density — This value is set at the factory and
should not be changed.
0.1 to 9.00 8.35
lb/gal
Sh Specific Heat — This value is set at the factory and should
not be changed.
0.1 to 1.00 1.00
BTU/lb °F
CC Current Control (optional) – Allows setting of the set point
temperature via a 4-20 mA analog signal.
YES = Enables current control
NO = Disables current control
Yes or No No
PC Communications Baud Rate — Selects the baud rate for
serial (RS-232/RS-485) communication.
24 (2400), 48 (4800),
96 (9600) or 192 (19200)
9600
LA Low Ambient Temperature Limit —Minimum ambient
temperature limit. Displayed and settable only in ºC. Should
the ambient temperature fall below the LA value, the audio
and visual alarms will activate and the compressor, heater,
fan, and pump will turn OFF.
1 to 7°C
Always displayed
and set in °C
2°C
110-279 24

PolyScience DA500 Specifications

General

Brand	PolyScience
Model	DA500
Category	Chiller
Language	English