振华重工集团股份有限公司

ZHENHAU HEAVY INDUSTRIES CO.,LED.

Hull No：ZPMC1080/ZPMC1081
Project:NPCC SELF ELEVATING ACCOMODATION UNIT
Subject No:ZP14-2190

产 品 完 工 资 料

Product Completion Documentation

制造商：华荣科技股份有限公司
Manufacturer: Warom Technology CO.Ltd
二○一‫ޣ‬年‫ޣ‬月
June 2016
 产品完工资料
Product Completion Documentation

CONTENT

(One) A2G-50 instructions ………………………………………………………... 3

(Two)A2G-50 Certification ……………… .................................................................... 8

(Three)1950G Instructions…….......................................................... 10

(Four) 1950G Certification.............................................................. 13

 Electronic
pressure measurement

Differential pressure transmitter

Model A2G-50
WIKA data sheet PE 88.02

Applications
■■ For measuring differential pressures and static pressures
■■ Monitoring of filters
■■ Overpressure monitoring in clean rooms and laboratories

Special features
■■ Electrical output signal 0 ... 10 V or 4 ... 20 mA, can be
selected directly at the instrument via jumpers
■■ Modbus® output signal (option)
■■ LC display (option)
■■ Maintenance-free
■■ Maximum operating pressure 20 kPa

Differential pressure transmitter, model A2G-50

Description

The model A2G-50 differential pressure transmitter is used

for measuring differential pressures of gaseous media in
ventilation and air-conditioning applications.

It is based on the piezoresistive measuring principle. This

compact differential pressure transmitter offers excellent
performance and high quality at an attractive price.

Electrical analogue output signals for both measurement

parameters (0 ... 10 V or 4 ... 20 mA; adjustable in the
instrument via jumpers) or the digital Modbus® versions
enable the direct connection to control systems or the
building automation system.

WIKA data sheet PE 88.02 ∙ 04/2016 Page 1 of 5

Data sheets showing similar products:

Differential pressure transmitter Eco; model A2G-55; see data sheet PE 88.04
Specifications

Differential pressure transmitter, model A2G-50

Variant 1 Variant 2 Variant 3
Measuring element Piezo measuring cell
Measuring range 0 … 2,500 Pa 1) 0 … 7,000 Pa 1) -250 ... +250 Pa 1)
0 … 2,000 Pa 2) 0 … 5,000 Pa 2) -100 ... +100 Pa 2)
0 … 1,500 Pa 2) 0 … 4,000 Pa 2) -50 ... +50 Pa 2)
0 … 1,000 Pa 2) 0 … 3,000 Pa 2) -25 ... +25 Pa 2)
0 … 500 Pa 2) 0 … 2,500 Pa 2) 0 ... 250 Pa 2)
0 … 250 Pa 2) 0 … 2,000 Pa 2) 0 ... 100 Pa 2)
0 … 100 Pa 2) 0 … 1,500 Pa 2) 0 ... 50 Pa 2)
-100 … +100 Pa 2) 0 … 1,000 Pa 2) 0 ... 25 Pa 2)
8 measuring ranges can be selected via jumpers 8 measuring ranges can be selected via
(Measuring ranges < 250 Pa: Automatic zero adjustment jumpers
(AZ) recommended) (Only available with automatic zero
adjustment (AZ)
Option: Digital indicator (D), automatic zero adjustment (AZ), digital indicator and automatic zero
adjustment (AZ-D)
Accuracy ±1.5 % +1 Pa
(of measured pressure)
Units (adjustable in the menu)
■■ Air flow m3/h, m3/s, l/s, cfm
■■ Differential pressure Pa, kPa, mbar, inWC, mmWC
Process connection Connecting nozzle (ABS), lower mount, for hoses with inner diameter 4 or 6 mm
Power supply UB AC 24 V or DC 24 V ±10 %
Electrical connection Cable gland M16
Screw terminals
max. 1.5 mm2
Output signal DC 0 … 10 V, 3-wire, 4 … 20 mA, 3-wire
Current consumption < 1.0 W (0 … 10 V), < 1.2 W (4 … 20 mA), < 1.3 W (Modbus®)
Case Plastic (ABS)
Permissible temperatures
■■ Ambient temperature -20 … +70 °C
■■ Medium temperature -10 … +50 °C
Ingress protection IP54
Weight 150 g
1) Standard
2) Jumpers

Modbus® version (option)

Modbus® communication
Protocol Modbus® via serial interface
Transfer mode RTU
Interface RS-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 rate 9,600, 19,200, 38,400 - adjustable in the configuration
Modbus® addresses 1 … 247 addresses - adjustable in the configuration

Page 2 of 5 WIKA data sheet PE 88.02 ∙ 04/2016

Automatic zero adjustment (option)

The automatic zero adjustment aligns the zero point

from time to time so that a manual zero adjustment is not
necessary.

40376281X.01
During the zero adjustment (3 seconds every 10 minutes),
the output signal and the display show the last measured
value.

ZERO

V
V

Electrical connection
Pressure P Signal [U]

100 % 10.0 V
Output signal DC 0 ... 10 V Output signal 4 ... 20 mA

GND GND
24 V 50 %
24 V 5.0 V

DC 0 ... 10 V 4 ... 20 mA
POUT V POUT A
DC 0 ... 10 V 4 ... 20 mA
VOUT V VOUT A
0% 0.0 V
Time axis t [s]

Pressure P Signal [U] Pressure P Signal [I]

100 % 10.0 V 100 % 20.0 mA

50 % 5.0 V 50 % 12.0 mA

A
0%
A 0.0 V 0% 4.0 mA
Time axis t [s] Time axis t [s]

Pressure P Signal [I]

100 % 20.0 mA

50 % 12.0 mA

WIKA data sheet PE 88.02 ∙ 04/2016 Page 3 of 5

0% 4.0 mA
Time axis t [s]
Dimensions in mm

40405589.02
Approvals
Logo Description Country
EC declaration of conformity European Community
■■ EMC directive
■■ RoHS conformity
■■ WEEE directive

Certificates (option)
■■ 2.2 test report
■■ 3.1 inspection certificate

Approvals and certificates, see website

Page 4 of 5 WIKA data sheet PE 88.02 ∙ 04/2016

 Accessories

Description Order number

Connections for static duct probes for ¼" pipes
Insertion length 100 mm 40232956
Insertion length 150 mm 40232964
Insertion length 200 mm 40232972
Combi hose connection
Insertion length 100 mm 40232981
Insertion length 150 mm 40232999
Insertion length 200 mm 40233006
Measuring hoses
PVC hose, inner diameter 4 mm, roll at 25 m 40217841
PVC hose, inner diameter 6 mm, roll at 25 m 40217850
Silicone hose inner diameter 4 mm, roll at 25 m 40208940
Silicone hose inner diameter 6 mm, roll at 25 m 40208958
Duct connector for hose 4 and 6 mm 40217507

Scope of delivery
■■ Differential pressure transmitter
■■ 2 mounting screws
■■ 2 duct connectors
■■ 2 x 2 m PVC measuring hose

Ordering information
Model / Measuring range / Options

© 2008 WIKA Alexander Wiegand SE & Co. KG, all rights reserved.
The specifications given in this document represent the state of engineering at the time of publishing.
We reserve the right to make modifications to the specifications and materials.

WIKA data sheet PE 88.02 ∙ 04/2016 Page 5 of 5

04/2016 EN

WIKA Alexander Wiegand SE & Co. KG

Alexander-Wiegand-Straße 30
63911 Klingenberg/Germany
Tel. +49 9372 132-0
Fax +49 9372 132-406
info@wika.de
www.wika.de
 Bulletin E-57G
Series 1950G – Integral Explosion-Proof Pressure Switches
®

Specifications - Installation and Operating Instructions

Set Point External

Adjustment Screw Ground Screw

UL, CSA, FM Listed For

CL, I GR. A*, B, C, D - CL. II GR. E, F, G - CL. III
Directive 2014/34/EU (ATEX) Compliant For
0518 II 2G Ex d IIB + H2 T6 Gb
EC-Type Certificate Number: KEMA 03ATEX2402 X
ATEX Standards:
EN 60079-0:2012 + A11:2013
1/2˝ Female NPT EN 60079-1:2007
Electrical Conduit IECEx Certified for:
Connection Ex d IIB + H2 T6 Gb (-40°C < Ta < +60°C)
IECEx Certificate of Conformity:
IECEx DEK 11.0092X
IECEx Standards:
IEC 60079-0:2011
IEC 60079-1:2007

Vent Drain Captive

Plug Screw

The MODEL 1950G Explosion-Proof Switch combines the best features of the popular SPECIFICATIONS
Series 1900 Pressure Switch with a compact explosion-proof housing. Service: Air and compatible combustible gases.
Wetted Materials: Contact Factory.
This unit is UL, CSA, FM listed for use in Class I, Groups A*, B, C, D, Class II, Groups Temperature Limits: 0 to 140°F (-17 to 60°C). Note: Set point drift may occur with
E, F, & G and Class III atmospheres and Directive 2014/34/EU (ATEX) Compliant for ambient temperature changes.
II 2G Ex d IIB + H2 T6 Gb. IECEx certified Ex d IIB + H2 T6 Gb (-40°C < Ta < + Pressure Limits: 45 in w.c. (11.2 kPa) continuous; 10 psig (68.95 kPa) surge.
60°C) units are available. It is also totally rain-tight for outdoor installations. Six models Enclosure Rating: IP54, NEMA 3, 7 and 9.
allow set-points from 0.07 to 20 in w.c. (1.78 mm to 508.0 mm w.c.). Switch Type: 1 Form C relay (SPDT).
Electrical Rating: 10A, 120/240 VAC, 28 VDC. Resistive 50mA, 125 VDC.
Easy access to the SPDT relay for electrical hook-up is provided by removing the top Power Requirements: 24 VDC ±10%. 120 or 240 VAC ±10% optional.
plate of the aluminum housing. A captive screw allows the cover to swing aside while Electrical Connections: Internal Terminal Block.
remaining attached to the unit. Adjustment to the set point of the switch can be made Process Connections: 1/8˝ female NPT.
without disassembly of the housing. The unit is very compact, about half the weight Mounting Orientation: Diaphragm in vertical position. Consult factory for other
and bulk of equivalent conventional explosion-proof switches. position orientations.
Set Point Adjustment: Screw type on top of housing.
Attention: Units with the “NA” suffix are not Directive 2014/34/EU (ATEX) compliant. Weight: 2 lb, 15.7 oz (1.35 kg).
These units are not intended for use in potentially explosive atmospheres in the EU.
These units may be CE marked for other Directives of the EU.
MODEL 1950G SWITCHES:
OPERATING RANGES AND DEADBANDS
Approximate Dead
Operating Band
To order Specify Range At Min. At Max.
Model Number* in w. c. Set Point Set Point
1950G-00-B-__ 0.07 to 0.15 0.04 0.06
1950G-0-B-__ 0.15 to 0.5 0.06 0.11
1950G-1-B-__ 0.4 to 1.6 0.11 0.29
1950G-5-B-__ 1.4 to 5.5 0.4 0.9
1950G-10-B-__ 3.0 to 11.0 0.9 1.8
1950G-20-B-__ 4.0 to 20.0 1.2 3.0
*Specify either 24 for 24 VDC, 120 for 120 VAC or 240
for 240 VAC when ordering. Example: 1950G-00-B-120
*Add “NA” suffix for models with UL, CSA and FM
approvals only. Example: 1950G-00-B-120-NA

*GR. A is Only.

DWYER INSTRUMENTS, INC. Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: info@dwyermail.com
 RANGE 17/64˝ DIA. MTG. HOLES (2)
ADJUSTMENT 3-1/2
SCREW EXTERNAL GROUND [88.90]

4-7/8
[123.8]
5-7/16
[138.1] Fig. A
CAPTIVE
1/2˝ NPT SCREW
ELECTRICAL
CONDUIT
CONNECTION

VENT
1/8˝ NPT DRAIN 13/32
1/8˝ NPT HIGH LOW PRESSURE PLUG [10.312] + -
PRESSURE PORT PORT 1-17/32
1-11/16
[42.86] [38.89]

1950G Switch Outline Dimensions Fig. B

INSTALLATION
1. Select a location free from excess vibration and corrosive atmospheres where For units supplied with both internal and external bonding terminals, the ground screw
temperatures will be within the limits noted under Physical Data on page 1. Switch inside the housing must be used to ground the control. The internal bonding screw is
may be installed outdoors or in areas where the hazard of explosion exists. See page for supplementary bonding when allowed or required by local code. When external
1 for specific types of hazardous service. bonding conductor is required, conductor must be wrapped a minimum of 180° about
the external bonding screw. See below.
2. Mount standard switches with the diaphragm in a vertical plane and with switch
lettering and nameplate in an upright position. Some switches are position sensitive
and may not reset properly unless they are mounted with the diaphragm vertical.
LOCKWASHER CONDUCTOR
3. Connect switch to source of pressure, vacuum or differential pressure. Metal tubing SCREW
with 1/4˝ O.D. is recommended, but any tubing which will not restrict the air flow can be
used. Connect to the two 1/8˝ female NPT pressure ports as noted below.

A. Differential pressures - connect pipes or tubes from source of greater pressure to

high pressure port marked HIGH PRESS, and from source of lower pressure to low
pressure port marked LOW PRESS.
CLAMP PLATE
B. Pressure only (above atmospheric pressure) - connect tube from source of CLAMP
pressure to high pressure port. The low pressure port is left open to atmosphere. FRONT VIEW DETAIL SIDE VIEW DETAIL

C. Vacuum only (below atmospheric pressure) - connect tube from source of vacuum
to low pressure port. The high pressure port is left open to atmosphere.
ADJUSTMENT
4. To make electrical connections, remove the three hex head screws from the To change setpoint:
cover and after loosening the fourth captive screw, swing the cover aside. Electrical A. Remove the plastic cap and turn the slotted Adjustment Screw at the top of the
connections to the standard single pole, double throw relay and AC supply voltage housing clockwise to raise the setpoint pressure and counter-clockwise to lower the
connections to the unit, are provided by means of terminals marked “COM”, “NO”, setpoint. After calibration, replace the plastic cap and re-check the setpoint.
“NC”, “~” and “~” (See Fig. A). Electrical connections to the standard single pole,
double throw relay and DC supply voltage connections to the unit, are provided by B. The recommended procedure for calibrating or checking calibration is to use a
means of terminals marked “COM”, “NO”, “NC”, “+” and “-” (See Fig. B.). The normally “T” assembly with three rubber tubing leads, all as short as possible and the entire
open contacts close and the normally closed contacts open when pressure increases assembly offering minimum flow restriction. Run one lead to the pressure switch,
beyond the setpoint. Switch loads for standard models should not exceed the maximum another to a manometer of known accuracy and appropriate range, and apply
specified current ratings as stated on page 1. For ATEX, IECEx compliance, cables pressure through the third tube. Make final approach to the setpoint very slowly. Note
and cable glands suitable for temperature of at least 95°C shall be used. The cable that manometer and pressure switch will have different response times due to
entry device shall be of certified flameproof type, suitable for the conditions of use and different internal volumes, lengths of tubing, fluid drainage, etc. Be certain the switch
be correctly installed. Refer to Certificate No.: IECEx DEK 11.0092X for conditions of is checked in the position it will assume in use, (i.e. with diaphragm in a vertical
safe use for IECEx Compliant units. Switch capabilities decrease with an increase in plane) and switch lettering and Dwyer nameplate in an upright position.
ambient temperature, load inductance, or cycling rate.
C. For highly critical applications check the setpoint adjustment and if necessary,
reset it as noted in step A.

MAINTENANCE
The moving parts of these switches need no maintenance or lubrication. The only
adjustment is that of the setpoint. Care should be taken to keep the switch reasonably
clean. Periodically the vent drain plug should be rotated then returned to its original
position. This will dislodge deposits which could accumulate in applications where
there is excessive condensation within the switch. Repairs to be conducted by Dwyer
Instruments, Inc. Cover bolts are Class 10.9 35 mm long.

©Copyright 2016 Dwyer Instruments, Inc. Printed in U.S.A. 4/16 FR# 28-440332-10 Rev.12

DWYER INSTRUMENTS, INC. Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: info@dwyermail.com
 CERTIFICATE
(1) EC-Type Examination
(2) Equipment and protective systems intended for use in
potentially explosive atmospheres - Directive 94/9/EC

(3) EC-Type Examination Certificate Number: KEMA 03ATEX2402 X Issue Number: 4

(4) Equipment: Differential Pressure Switch, Model 1950G

LU
Q (5) Manufacturer: Dwyer Instruments, Inc.

A (6) Address: 102 Indiana Highway 212, Michigan City, IN 46360, USA

(7) This equipment and any acceptable variation thereto is specified in the schedule to this certificate
documents therein referred to.

(8) DEKRA Certification B.V., notified body number 0344 in accordance with Article 9 of the Council Directive 94/9/EC
of 23 March 1994, certifies that this equipment has been found to comply with the Essential Health and
Requirements relating to the design and construction of equipment and protective systems intended for
potentially explosive atmospheres given in Annex II to the direc

The examination and test results are recorded in confidential test report number 212689300

(9) Compliance with the Essential Health and Safety Requirements has been assured by compliance with:

EN 60079-0 :2009

(10) Mm-
If the sign "X" is placed after the certificate number, it indicate lent is subject to special o
for safe use specified in the schedule to this certificate.

(11) This EC-Type Examination Certificate relates only to the design, e'xarn'inafion/and/tests' of the specified equi
according to the Directive 94/9/EC. Further requirements of the directive apply to the manufacturing process
mm
supply of this equipment. These are not covered by t|

(12)

C.G.v&n Es
Certification Manager Page 1/2

' Integral publication of this certificate and adjoining reports is allowed. This Certificate may only be reproduced in its entirety and without any change.

^ All testing, inspection, auditing and certification activities of the former KEMA Quality are an integral part
RvACB of the DEKRA Certification Group

DEKRA Certification B.V. Utrechtseweg 310, 6812 AR Arnhem P.O. Box 5185, 6802 ED Arnhem The Netherlands
T +31 26 3 56 20 00 F +31 26 3 52 58 00 www.dekra-certification.com Registered Arnhem 09085396
 P DEKRA
(13) SCHEDULE
(14) to EC-Type Examination Certificate KEMA 03ATEX2402 X Issue No. 4

(15) Description

The Differential Pressure Switch, Model 1950G is a differential pressure-operated switch in a die
cast aluminium enclosure. The diaphragm and the switch are located in separate partitions of the
unit. They are separated by a continuous metal wall. The movement of the diaphragm is
magnetically transferred through this wall to the switch.

Ambient temperature range -40 °C to +60 °C.

Electrical data

Supply 24 Vdc, 120 Vac or 240 Vac ± 10 %

Relay contacts 10 A -120/240 Vac, 28 Vdc
resistive 50 mA -125 Vdc

Installation instructions

The instructions provided with the equipment shall be followed in detail to assure safe operation.

(16) Test Report

No. 212689300.

(17) Special conditions for safe use

The property class of the cover screws shall be at least 10.9.

The flame path dimensions differ from the EN 60079-1 requirements. Repairs to be conducted by
Dwyer Instruments Inc.

(18) Essential Health and Safety Requirements

Covered by the standards listed at (9).

(19) Test documentation

As listed in Test Report No. 212689300.

Page 2/2

Form 100
Version 2 (2011-05)