APZ 2030
Operation Manual
2.1.2 You can set spans for the device with control buttons found on the front
panel. See Table 1 for basic and optional spans.
Table 1 - Spans
Basic spans, Pa
-500…+500
-100…+2000
0…7000
Optional spans, Pa
-100…+100
-200…+200
0…100
0…200
0…500
-100…+100
0…100
0…200
0…500
0…1000
0…2000
0…1000
0…1500
0…2000
0…3000
0…5000
Burst pressure, kPa
±10
±30
±80
Burst pressure, kPa
±20
±40
±100
2.1.3 See Table 2 for output signal parameters.
Table 2 - Output parameters
Parameter
Value (properties)
Analog outputs:
Number of measuring channels
2
Voltage
output
(3-wire) / load resistance
0...10 V / ≥10 kOhm
Current
output
(3-wire) / load resistance
4...20 mA / ≤ 500 Ohm
Switch outputs:
Number of switch outputs
2 (independent)
Type of mechanical switch contact
nonbridging
(NC and NO)
Max switching voltage
250 V (AC) / 30 V (DC)
Max switching current (contact type)
5 A (NO)/3 A (NC)
Switched signals (active load):
- DC, voltage of 30 V
- AC, voltage of 250 V
5 A (NO)/3 A (NC)
5 A (NO)/3 A (NC)
Tripping threshold (configurable), % of span
0…100
Switch operating modes (configurable)
hysteresis/window
Switching accuracy
±0.7%
2.1.4. The device has a display, see Table 3 for its specifications.
Table 3 - Display specifications
Name
Value
Range of displayed values
-19999…+19999
Primary / secondary line height
15/7 mm
Displayed accuracy
0.1% of span ± low-
order digit as % of span
Readings display time, max
0.2 s
2.1.5 DC power supply voltage ranges from 18 to 36 V (rated - 24 V), AC - 24
V ± 10%.
2.1.6 Consumed current/power, max - 100 mA/3.6 W.
2.1.7 Dimensions, max - 106 × 91 × 44 mm (Supplement A).
2.1.8 Weight, max - 0.25 kg.
2.1.9 Housing ingress protection (GOST 14254) - IP66.
2.2. Operating conditions:
2.2.1 The device was designed to operate in the following conditions:
- enclosed explosion-proof spaces free from aggressive vapors and gases;
- ambient temperature from -
10 to +50 °С;
- medium temperature from -
5 to + 65 °C;
- atmospheric pressure from 84 to 106.7 kPa.
2.2.2 Medium: air, non-flammable and non-aggressive gases.
2.2.3 Resistance to atmospheric pressure puts the device in group R1 under
GOST R 52931 (max height above sea level - 1000 m).
2.2.4 Resistance to mechanical attack puts the device in group N2 under
GOST R 52931.
2.3 Operating limitations:
- medium should be free from crystallizable impurities, contaminations and
dust;
- medium should be free from flammable and aggressive gases and liquids.
3 Safety precautions
3.1 The electric shock hazard class of the device is III (no dangerous voltage);
see GOST 12.2.007.0 for full classification.
3.2 Take measures to prevent moisture from getting into the housing.
3.3 Only qualified specialists that have read and understood this manual are
allowed to mount, connect, adjust, do maintenance on the device.
4 Mounting and use
4.1 Mount the device onto a vertical surface through two Ø5 mm holes (see
Supplement A). Make sure its pressure port and cable glands point downwards
(to allow condensate draining).
4.2 See Figure 1 for circuits connection diagram (connected inside the
housing via cable glands).
Figure 1 -
Connection diagram; P1, P2
- inlet medium pressure, P1 (+) for
higher pressure, P2 (-) for lower pressure.
This manual covers mounting and operation of APZ 2030 differential pressure
transmitter (hereinafter
referred to as "transmitter" or "device"); it contains
technical data, description of design and other information necessary for
proper application and maintenance of the device.
See datasheets at http://piezus.ru for complete specifications.
Production regulated by TOR 4212-000-7722857693–2015.
Terms and abbreviations used in the manual:
Span –
measurement range; NC
-
normally closed (NC contact);
NO -
normally open (NO contact); SW1, SW2
- switch contacts.
1 Purpose of the device
1.1 APZ 2030 differential pressure transmitter finds application in monitoring,
protection, alarm and control systems in heat and power installations, air
conditioning systems, various industrial environments and public utilities.
1.2 The device:
- proportionally and linearly converts measured differential pressure and
outputs normalized voltage (0 ... 10 V) and current (4 ... 20 mA) signals;
- compares current pressure value to the preset thresholds and outputs two
switching signals when the monitored parameter crosses those thresholds (as
prescribed by the selected operation algorithm, hysteresis or window);
- shows current pressure value (in selected units) and discrete outputs status
on the integrated digital display. Display and buttons allow quick
reconfiguration of the device and eliminate the need to unmount it for that
purpose.
1.3 Applications - heating, ventilation and air conditioning systems (HVAC/R):
-
monitoring of flows in ventilation ducts;
- control of exhaust and discharge fans in air
ducts;
- differential pressure control in filters
-
air pressure control in clean rooms;
-
air supply and fire flaps control;
-
overheating protection for ventilation heaters;
- HVAC systems emergency control.
2 Technical specifications
2.1 General technical data
2.1.1 See transmitter's passport and label (sticker) for basic span and accuracy
info.
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PRESSURE TRANSMITTER
