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A2G-52 1
A2G-52
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WIKA · Pressure measurement · Family A2G

Dual differential pressure sensor

For ventilation and air-conditioning
Range
-250…7500 Pa
Output
Modbus® RTU · Modbus
Accuracy
±2 Pa + 1 % (for pressure < 125 Pa)
Protection
IP54
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Price
On request
Depends on configuration
Request a quote
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Description

The model A2G-52 dual differential pressure sensor combines two differential pressure sensors in one instrument, so that pressure can be measured from two different control points.

The model A2G-52 has a Modbus  interface and an input interface. By using the input interface, up to two passive temperature sensors or an analogue 0 ... 10 V signal can be connected directly to the measuring instrument. Thus, the use of cost-intensive active temperature transmitters can be dispensed with and the costs for material and mounting can be reduced.

for further approvals see page 5

Dual differential pressure sensor, model A2G-52

Special features

  • Simple mounting
  • Two differential pressure sensors in one instrument
  • Two inputs for temperature sensors or analogue signal
  • With Modbus ® interface
  • Two-line LC display for the direct reading of both pressure values
Identification
ModelA2G-52
Product familyA2G
SubcategoryDifferential pressure sensor
Measuring range
Pressure ranges-250…2500 Pa · -250…7500 Pa
Accuracy
Accuracy class±2 Pa + 1 % (for pressure < 125 Pa), ±1 Pa + 1 % (for pressure > 125 Pa) for -250...+2,500 Pa range; ±2 Pa + 1.5 %, ±1 Pa + 1.5 % for -250...+7,000 Pa range
Process conditions
Process connectionConnecting nozzle (copper alloy), lower mount, for hoses with inner diameter 4 mm
Process temperature−10…+50 °C
Electrical characteristics
Output signalModbus® RTU · Modbus · Modbus®
Power supplyAC 24 V or DC 24 V ±10 %
Electrical connectionCable gland M20, 2 x 4 spring-clip terminals, max. 1.5 mm²
Materials
Case materialPlastic (ABS), Cover: Polycarbonate (PC)
Wetted parts materialCopper alloy
Operating environment
Ambient temperature−20…+70 °C
IP ratingIP54
Weight0.15 kg
Certifications and approvals
Certifications
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Additional details
Datasheet languagesEN
Tables from datasheet
Dual differential pressure sensor, model A2G-52
Measuring elementPiezo measuring cell
Units of measurePa, mbar, inWC, mmWC, psi
Measuring range-250 …+2,500 Pa and -250 …+7,500 Pa
Accuracy class-250 ... +2,500 Pa = pressure < 125Pa=±2Pa+1% pressure > 125Pa=±1Pa+1% -250 ... +7,000 Pa = pressure < 125 Pa = ±2 Pa + 1.5% pressure > 125 Pa = ±1 Pa + 1.5% all data refer to the current measured value (of measured pressure)
Process connectionConnecting nozzle (copper alloy), lower mount, for hoses with inner diameter4mm
Power supply U BAC 24V or DC 24V ±10%
Electrical connectionCable gland M20 2 x 4 spring-clip terminals, max.1.5mm 2
Output signalModbus ®
DisplayTwo-line LC display (12 characters/line) Line 1: Active measurement, input A Line 2: Active measurement, input B
CasePlastic (ABS) Cover: Polycarbonate (PC)
Permissible temperatures ■ Ambient temperature ■ Medium temperature-20 ...+70 °C -10 ...+50 °C
Relative humidity0 …95%r.h., non-condensing
Ingress protectionIP54
Weight150 g
Modbus ® communication
ProtocolModbus ® via serial interface
Transfer modeRTU
InterfaceRS-485
Byte format(11 bits) in RTU mode Coding system: 8 bits binary Bits per byte: - 1 Start bit - 8 data bits, lowest-order bit is sent first - 1 bit for parity - 1 stop bit
Baud rate9,600, 19,200, 38,400 - adjustable in the configuration
Modbus ® addresses1 ... 247 addresses - adjustable in the configuration
RegisterParameter descriptionData typeValueDisplay
3x0001Program version16 bit0 ... 1,0000.00 ... 99.00
3x0002Pressure measurement A16 bit-250 ... 2,500-250 ... 2,500 (Pa)
3x0003Pressure measurement B16 bit-250 ... 2,500-250 ... 2,500 (Pa)
3x0004Input 1: 0 ...10V16 bit0 ... 1,0000 ...100%
3x0005Input 1: Pt100016 bit500 ... 500-50 ...+50 °C
3x0006Input 1: Ni100016 bit-500 ... 500-50 ...+50 °C
3x0007Input 1: Ni1000-LG16 bit-500 ... 500-50 ...+50 °C
3x0008Input 1:NTC10k16 bit-500 ... 500-50 ...+50 °C
3x0009Input 2: 0 ...10V16 bit0 ... 1,0000 ...100%
3x0010Input 2: Pt100016 bit-500 ... 500-50 ...+50 °C
3x0011Input 2: Ni100016 bit-500 ... 500-50 ...+50 °C
3x0012Input 2: Ni1000-L16 bit-500 ... 500-50 ...+50 °C
3x0013Input 2:NTC10k16 bit-500 ... 500-50 ...+50 °C
RegisterParameter descriptionData typeValueDisplay
1x0001Input 1: BIN INBit 00 ... 1On - Off
1x0002Input 2: BIN INBit 00 ... 1On - Off
View all (9)
RegisterParameter descriptionData typeValueDisplay
0x0001ZeroingBit 00 ... 1On - Off
RegisterParameter descriptionData typeValueDisplay
4x0001Beta value of NTC resistor16 bit0 ... 30,0000 ... 30,000 (standard 4,220)
DescriptionOrder number
A2G-52 with measuring range -250 ... +2,500 Pa40399907
A2G-52 with measuring range -250 ... +7,000 Pa40399920
DescriptionOrder number
Measuring hoses
PVC hose, inner diameter 4 mm, roll at 25m40217841
PVC hose, inner diameter 6 mm, roll at 25m40217850
Silicone hose, inner diameter 4 mm, roll at 25m40208940
Silicone hose, inner diameter 6 mm, roll at 25m40208958
Duct connector for hose 4 and6mm40217507
LogoDescriptionCountry
EU declaration of conformity ■ EMCdirective ■ RoHS conformity ■ WEEE directiveEuropean Union
EAC (option) ■ EMCdirective ■ Import certificateEurasian Economic Community
GOST (option) Metrology, measurement technologyRussia
-MTSCHS (option) Permission for commissioningKazakhstan