SCC-P: Air Differential Pressure Controller and Sensor

SCC-P

Programmable differential pressure transmitter with auto zero function

The SCC-P is a programmable differential pressure transmitter. The transmitter measures the differential pressure using a
ceramic sensor. The signal is temperature compensated and calibrated. An auto zero function ensures that the transmitter has no zero offset. It is performed by default after power-up and periodically once a day. The pressure is measured every 100 ms, giving a sampling frequency of 10 Hz. The number of samples for the averaging filter and the minimum and maximum pressure can be configured with parameters. The transmitter calculates the output signal for the analogue output accordingly.

Auto Zeroing

The "Auto Zero" function will zero out a differential pressure that might be present at normal operation in a system. This allows for effective measuring the differential pressure in a system.

- Auto zeroing calibrates the zero-point offset to 0 Pa automatically
- Auto zeroing will be done at startup and every 24 hours by default

Applications

Pressure measurement in the field of heating, ventilation and air conditioning
Measuring of air flow velocity
Measuring and control of positive or negative pressure for example for clean rooms
Measures exactly the pressure range you need
Recording of minimum and maximum values for critical environments
Supervision of critical pressures

Features

Pressure measurement from ± 100 Pa up to ± 2500 Pa (±10 mm to ±250 mm H₂O, ±0.4 to ±10 in H₂O)
Integrated auto zeroing function using a solenoid valve
DIP switch for pressure range pre-set (see operation manual for details)
Programmable pressure output signal range
Selectable square root function
Selectable averaging filter for the measurement signal
Minimum and maximum pressure memory
Set display range and value. This may be used to visualize air flow or air volume
0(2)…10 V / 0(4)…20 mA measuring signal output (range programmable)

Ordering

Product name	Product No.	Description
SCC-P2	40-300246	Pressure range -100...100 Pa (-10...10 mm H₂O, -0.4...0.4 in H₂O)
SCC-P3	40-300247	Pressure range -500...500 Pa (-50...50 mm H₂O, -2...2 in H₂O)
SCC-P4	40-300248	Pressure range -2500...2500 Pa (-250...250 mm H₂O, -10...10 in H₂O)