The PMDS4 clean room monitor is designed for positive and negative monitoring of differential air pressure between the inside and outside of a clean room.
Due to the construction of the device it can be directly installed into a wall partition between rooms.
Up to four additional sensors for monitoring temperature and humidity can be connected to the device and displayed simultaneously.
The calibration and adjustment is made simply by using the front panel controls.
Contents
- Applications
- Specification
- Measurement range
- Measurement principle
- Overpressure safety
- Medium
- Parts in contact with medium
- Linearity
- Hysteresis
- Supply
- Power consumption
- Current Protection
- Supply influence
- Output signal
- Resolution
- Temperature drift
- Temperature range
- Humidity
- Storage temperature
- Long term stability
- Housing
- Panel
- Pressure connectors
- Electric outlet
- Protection
- Protection type
- Standards
- Weight
- Impact strength
- Sensor volume
- Volume increase
- Display
- Zeroing
- Option
- Limit contacts
- Product Help
- Related Documents
Applications
- Clean room technology
- Chemical industry
- Medical technology
- Filter technology
- Hospital infection control
Specification
Measurement range
-1 to +1 hPa (other ranges on request)
Measurement principle
Inductive variation with diaphragm movement
Overpressure safety
- Overpressure recognition
- pos. overpressure +1,15hPa +/-0,075 hPa
- neg. overpressure -1,15hPa +/-0,075 hPa
- For differential measurements: Max. system pressure 1 bar (higher overpressure protection on request)
Medium
Air and other non aggressive gases
Parts in contact with medium
Ni, Al, CuBe, PU
Linearity
- +/- 1% of f.v.
- Option 1: +/- 0,5% of f.v.
- Option 2+/- 0.2% of full scale; other ranges >= 2,5 hPa
Hysteresis
0.1% of full scale
Supply
- 15 – 35 VDC
- Option: 100 – 240 VAC (50 – 60 Hz)
Power consumption
6 VA
Current Protection
500 mA
Supply influence
< 0.05%
Output signal
- 0 – 10 V (load <= 500 Ohm)
- Option: 0- 20 mA, (0) 4- 20 mA (load <= 500 Ohm)
Resolution
12 Bit (4096 points)
Temperature drift
- Zero point max. +/- 0,03%/K
- Span max. +/- 0,03%/K
Temperature range
+15°C to + 50°C
Humidity
up to 80% relative humidity
Storage temperature
-10°C to + 70°C
Long term stability
+/- 0,5 % per year typically
Housing
Material ABS, dimensions see below
Panel
Stainless steel
Pressure connectors
- Ø 3 x 4mm (fl exible hoses Ø 3)
- Ø 4,6 x 9mm (fl exible hoses Ø 4)
Electric outlet
Screw terminal max. 1,5 mm²
Protection
class II
Protection type
IP 20
Standards
- EN 61000-6-1
- EN6100-6-2
- EN61000-6-3
- EN61000-6-4
- EN 61010
Weight
ca. 1,2 kg (ca. 1,3 kg with supply)
Impact strength
10 x g
Sensor volume
aprox. 10 ml
Volume increase
aprox. 0,2 ml for nominal pressure
Display
- 4×7 segment LED-display; 4 digits, height of digit 14,2 mm,
- 4×14 segment LED-display 2 digits, height of digit 13,8 mm
Zeroing
- zeroing is adjustable Manual
- automatic (after system start then after 10 min, 20 min. and 1 hour. Then every hour)
Option
Output RS485 and with Modbus ASCII protocol / Modbus TCP / IP
Limit contacts
- 2 limit contacts (current consumption aprox. 35/45 mA)
- Relays output changer: 6 A / 230 VAC
- Status displayed via 2 LED
- Programmable: Hysteresis, power-on/ power-off delay, Opener/ NO switch
- Warning by flashing the display (value set)
Product Help
DP included
Does it include differential pressure measurement?
Yes it does, it has a bi-directional differential pressure range to measure over -100 to +100 Pa between the 2 ports.
Alarms for temperature & humidity
Can you program alarm limits ie. 18-24 degrees alarm at low and high temperature and for humidity 40-60%?
The device has two free adjustable limit contacts. These two contacts can be freely assigned to any measurement channel.
Dimensions of wall mounted clean room monitor
What are the dimensions of the PMDS4 wall mounted clean room monitor?
The width of the PMDS4 is 134mm, height is 284.5mm, and the depth into wall is 44mm.
