12
The DPC fl ow controller supports multi-gas functionality which allows users on site to select
the desired measured gas using local Display/Joystick interface or digital communication
interface. See Tables X - XVIII which provide lists of supported gases.
The set point can be controlled from one of the four user selectable sources: analog, lo-
cal OLED/Joystick interface, Digital Communication Interface (RS-232/RS-485, or optional
Modbus), Programmable Table.
The DPC fl ow controller can display fl ow rate in 43 different mass fl ow or 15 different volu-
metric fl ow engineering units. Instrument parameters and functions can be programmed
locally via optional OLED/Joystick interface or remotely via the RS-232/RS-485 interface or
optional Modbus RTU interface. DPC fl ow controllers support various functions including
two programmable fl ow totalizers; low, high or range fl ow; temperature and pressure alarms;
automatic zero adjustment (activated via local or digital communication interface);
programmable solid state relay (SSR); programmable 0-5 Vdc, 0-10 Vdc or 4-20 mA analog
inputs and outputs; user-programmable pulse output (via SSR); and self-diagnostic alarms.
Optional local OLED readout with adjustable brightness level provides mass and volumetric
fl ow rate, total volume reading in currently selected engineering units, and diagnostic events
and indication.
5. SPECIFICATIONS
FLOW MEDIUM: Please note that DPC Mass Flow Controllers
are designed to work only with clean gases,
never any corrosive gas and never any liquid.
CALIBRATIONS: Performed at standard conditions (14.7 psia
[101.4 kPa] and 70 °F [21.1 °C]) unless
otherwise requested or stated.
ENVIRONMENTAL (PER IEC 664): Installation Level II; Pollution Degree II.
FLOW ACCURACY (INCLUDING LINEARITY): ±(0.5% RD + 0.2% FS) at calibration
temperature and pressure conditions
after tare.
REPEATABILITY: +0.2% of full scale.
FLOW TEMPERATURE COEFFICIENT: 0.05% of full scale/°C or better.
FLOW PRESSURE COEFFICIENT: 0.01% of full scale/psi (6.895 kPa) or better.
TYPICAL FLOW RESPONSE TIME: Default 150 ms (adjustable)
1
.
INSTRUMENT WARM-UP TIME: < 5 seconds.
MAXIMUM CONTROLLABLE FLOW RANGE: 125% Full Scale.
OPERATION RANGE/TURNDOWN RATIO: 0.5% to 100% Full Scale / 200:1.
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