Name: Differential pressure sensor
Brand: WIKA
SKU: A2G-500

Description

The model A2G-500 is used to measure differential pressure, gauge pressure and vacuum in air and also in non-aggressive and non-flammable gases in ventilation and air-conditioning systems.

The piezoresistive measuring element is temperature-compensated and particularly stable over the long term. It records even the smallest pressure differences and thus ensures high reliability and the highest measurement accuracy. The measured values are available as analogue voltage and current signals, digitally via the RS-485 interface using Modbus ® RTU or via LoRaWAN ® . Integration into any control system or directly into cloud solutions is therefore easily possible.

With relay outputs, the instrument becomes a cost-saving differential pressure switch or 2-point controller.

Differential pressure sensor, model A2G-500

The A2G-500 has freely adjustable measuring ranges. The instrument can be set using the WIKA app and NFC and, depending on the version, using buttons and LEDs or buttons and a display. Efficient project documentation is possible using instrument parameter file readout via NFC and smartphone. The indication of up to four measured values and two relay states can be read from all viewing angles thanks to 2" TFT colour display with traffic light function and individualised measurement parameter lettering.

The construction of the A2G-500 is robust and weather-proof (IP65). The case can be opened without tools thanks to the snap-on cover. The graphics of the cover sheet insert can be customised. The instruments can thus be optimally integrated into any system design.

Special features

IIoT-ready and future-proof thanks to analogue and digital signal transmission (Modbus ® ) as well as wireless (LoRaWAN ® )

Time-saving instrument configuration and display of current measured values on the smartphone via NFC or WIKA app

No cabling effort for retrofit projects thanks to battery operation and LoRaWAN ®

Decentralised data node − up to four input signals − reduces cabling effort and installation costs

Reduction of installation costs due to simple wall or DIN rail mounting in a control cabinet

Specifications

1 x analogue output 2-wire or 3-wire (single range) 1)

1 x analogue out- put 3-wire (multi range)

Modbus ® RTU (multi range)

1 x wireless (battery power)

Display



Additional analogue output



Signal inputs



Relay



Automatic zero point setting



Wireless signal (LoRaWAN ® )



NFC

Configure

Read

Case dimensions

→ See dimensions on page 6

Process connection 1)

2 x connecting nozzle

Ø 5 mm[0.19 in] /Ø 7 mm[0.27 in]

For hoses

With inner diameter 4 ... 6 mm[0.15 ... 0.23 in]

Case 1)

PC GF20

Cover with insert sheet 1)

PC, transparent; ABS, RAL 9010

Mounting plate 1)

PC, RAL 7035

Weight (dependig on version)

260 ... 320 g [0,57 ... 0,70 lb]

±250 Pa

±1 inWC

-25 …+25

-0.1 ... +0.1

-50 …+50

-0.2 ... +0.2

-100 …+100

-0.4 ... +0.4

-150 …+150

-0.6 ... +0.6

0…25

0 ... 0.1

0…50

0 ... 0.2

0 …100

0 ... 0.4

0 …250

0 ... 1

±2,500 Pa

±10 inWC

-500 …+500

-2 ...+2

-1,000 …+1,000

-4 ...+4

0 …250

0 ... 1

0 …500

0 ... 2

0 …1,000

0 ... 4

0 …1,500

0 ... 6

0 …2,000

0 ... 8

0 …2,500

0 ... 10

±7,000 Pa

±28 inWC

0 …1,000

0 ... 4

0 …1,500

0 ... 6

0 …2,000

0 ... 8

0 …2,500

0 ... 10

0 …3,000

0 ... 12

0 …4,000

0 ... 16

0 …5,000

0 ... 20

0 …7,000

0 ... 28

±12,000 Pa

±48 inWC

0 …5,000

0 ... 20

0 …6,000

0 ... 24

0 …7,000

0 ... 28

0 …7,500

0 ... 30

0 …8,000

0 ... 32

0 …9,000

0 ... 36

0 …10,000

0 ... 40

0 …12,000

0 ... 48

Pressure type

Differential pressure

Unit

■ Pa ■ kPa ■ mbar ■ mmWC ■ inWC

Operating pressure

■ ±250 ... ±2.500 Pa [±1 ...±10 inWC]: 10 kPa [40 inWC] ■ ±7.000 ... ±12.000 Pa [±28 ...±48 inWC]: 100 kPa [400 inWC]

Measuring element

Piezo measuring cell

Digital display

Display resolution

240 x 320 dpi

Type of display

2"TFT colour display

Dashboard function

Indication of up to four measured values and two relay states possible; automatic size scaling depending on the number of measured values displayed. Indicated values can be given any alphanumeric designation.

Colour configuration

Range of setting possibilities; colours definable via RGB code.

Alarm function

Definition of two limit values possible; on reaching these limit values, a colour change can be defined for each (e.g.'Warning' and 'Alarm')

Accuracy 1)

0.50%FS 2)

Operating range

±250 Pa [ ±1 inWC]

± 2,500 Pa [ ± 10 inWC]

± 7,000 Pa [ ± 28 inWC]

± 12,000 Pa [ ± 48 inWC]

Temperature range

Compensated 3) TC 4) offset (% FS/K)

0.015%

0.01%

0.008%

0.005%

Uncompensated 5) TC 4) offset (% FS/K)

0.025%

0.02%

0.01%

Compensated 3) TC 4) span (% FS/K)

0.02%

0.01%

Uncompensated 5) TC 4) span (% FS/K)

0.03%

0.02%

Zero point setting

■ Manually via push button on the PCB ■ 'myWIKA wireless device' app ■ Automatic 6)

Output signals

■ 0 ... 10 V, 0 ...5V or 2 ... 10 V, 3-wire ■ 4 ... 20 mA, 2- or 3-wire ■ Relay ■ Modbus ® ■ LoRaWAN ®

Number of analogue outputs

■ 1 x ■ 2 x

Load

Current output

Max.500Ω

Voltage output

Typ. 1 kΩ, min.700Ω

On-site interface

NFC (near field communication)

Standard

ISO/IEC 15693

Modulation

13.56 MHz

Protocol

Modbus ® via serial interface

Transfer mode

RTU

Interface

RS-485

Max. voltage

■ ± 10V without terminating resistor ■ ± 6V with terminating resistor

Logo

Description

Region

EU declaration of conformity

European Union

EMCdirective

RED - Radio Equipment Directive

RoHS directive

WEEE directive

Model

Description

Order number

Measuring hoses

PVC hose, inner diameter 4 mm[0.16 in], roll at 25 m[82.02 ft]

40217841

PVC hose, inner diameter 6 mm[0.24 in], roll at 25 m[82.02 ft]

40217850

Silicone hose, inner diameter 4 mm[0.16 in], roll at 25 m[82.02 ft]

40217906

Silicone hose, inner diameter 6 mm[0.24 in], roll at 25 m[82.02 ft]

40217914

Duct connector for measuring hoses Ø4…6mm[0.16 …0.24 in]

40217507

Multiple sealing inserts (for M20 cable gland) Sealing insert with 2 bores at Ø4mm[0.16 in];PU 10 x

40444284

Sealing insert with 2 bores at Ø6mm[0.24 in];PU 10 x

40444285

Sealing insert with 4 bores at Ø5mm[0.20 in];PU 10 x

40444286

Sealing plug for sealing insert with 4 bores, each with Ø5mm[0.20 in]; PU 50 x

40454873

Battery AA 3.6 V, 2.6 Ah (only with battery version);PU 2 x

40443947

LoRaWAN ® gateway, preconfigured for WIKA network server Gateway for indoor use

On request

Accuracy class	0.50 % FS
Accuracy standard	EN 837

Process connection	2 x connecting nozzle Ø 5 mm2 x connecting nozzle Ø 7 mmFor hoses with inner diameter 4 ... 6 mm2x connecting nozzle Ø5 mm / Ø7 mm
Process temperature	−40…+120 °C

Output signal	Modbus® RTU · LoRaWAN® · Relay · 0 ... 10 V · 0 ... 5 V · 2 ... 10 V · 4 ... 20 mA · Modbus RTU · LoRaWAN
Power supply	24 V ±10 % AC/DC
Electrical connection	Spring-clip terminals
Switching function	NO, NC, Force open, force closed
Switching contacts	2

Case material	PC GF20, PC, ABS
Wetted parts material	PC, ABS, PC GF20

Ambient temperature	−40…+60 °C
IP rating	IP65
Weight	0.32 kg

Differential pressure sensor

Description

Special features

Build a A2G-500 for your task

Finish your configuration

57 standard articles of family A2G

Model	A2G-500
Product family	A2G
Subcategory	Differential pressure sensor