WIKA M93X.3A Specifications

R

Diaphragm Seals

Diaphragm-Type Sanitary Gauge Assembly
Type M932.3A - Dry Case
Type M933.3A - Liquid Filled Case

WIKA Datasheet M93X.3A

Applications

 Pharmaceutical Industry
 Biotechnology

 Food & Beverage

Description

Design

All-welded construction in full compliance with ‘3A’ third party

standards and meets the most rigorous biopharmaceutical

industry specications. This assembly has all the advantages
of the 23X.50 series mechanical gauge (ASME B40.100 & EN
837-1) and WIKA combines it with a superior designed sanitary

diaphragm seal. All external stainless steel surfaces are

electropolished and the wetted components have full material
identication and traceability. The diaphragm and its body

have matching convolution patterns to greatly reduce potential

diaphragm damage due to mishandling and to minimize
temperature eects.

Gauge Nominal Size

2-1/2" or 4" – Lower and Back Mount

Process Connection

1-1/2" to 4" Tri-Clamp

Pressure Range

Vacuum and 0 to 15 psi up to 0 to 1000 psi, includes compound
ranges (maximum working pressure is limited by installation
clamp rating). Clamp provided by customer.

Operating Temperature

Ambient: +25°F to +140°F (-4°C to +60°C) – dry or
glycerine lled case
Process: +25°F to +300°F (-4°C to +149°C)

Autoclave: 300°F for one hour

(polysulfone window and dry case w/weep holes)

Dial

White aluminum with black lettering

Accuracy (Ref.@ 73° F)

2-1/2": ±2/1/2% of span
4": ±1.0% of span

WIKA Datasheet M93X.3A 04/2017 Page 1 of 4

®

(‘3A’ third party compliant)

Temperature Eects

0.06 psi maximum per every 10°F process and ambient
temperature change

System Fill (FDA compliant)

Glycerine, KN 7 - Non-vacuum application
Mineral Oil, KN 92 - Vacuum application

Wetted Material

316L stainless steel electropolished

Nominal surface nish Ra ≤ 15 µinch (0.38 µm) per ASME BPE
SF4 (except for weld seam)

Case Material

304 stainless steel electropolished case with vent plug
and stainless steel electropolished twist lock removable

bayonet ring

Window

Polycarbonate or Polysulfone

Pointer

Black aluminum, micro-adjustable, designed for zero
adjustment in eld

M93X.3A Sanitary Gauge

Bourdon Tube & Movement

316L stainless steel bourdon tube and stainless steel movement

Weather Protection

Weather tight to NEMA 4X / IP65 (without optional autoclave
weep holes)

Serial Number and Part Number
Engraved in case of gauge

Material Identication and Heat Numbers

Engraved in seal body or gauge case

2½" & 4" Lower Mount

Documentation

Calibration Conformance Report supplied with each assembly
(not a direct substitute for NIST certicate). Material
Conformance documents supplied with each assembly (not a
substitute for 3.1 EN 10204 material certicate).

Available Options

See Selection Guide (over)

Additional pressure ranges available upon request.

To determine the eects of temperature and response time in a specic
application, contact the factory for an Application Questionnaire. The
information provided will allow WIKA Technical Support to accurately

model your application parameters using state-of-the-art computer
simulation techniques.

2½" Center Back Mount

4" Lower Back Mount

Page 2 of 4 WIKA Datasheet M93X.3A · 04/2017

M93X.3A Selection Guide

Field no. Code

1

25 2½" Gauge case

40 4.0" Gauge case

V000 -30 inHg...0 Vacuum

C030 -30 inHg … 30 psi Compound Range

C060 -30 inHg … 60 psi Compound Range

C100 -30 inHg … 100 psi Compound Range

C160 -30 inHg … 160 psi Compound Range

P015 0...15psi Gauge pressure range

2

P030 0...30 psi Gauge pressure range

P060 0...60 psi Gauge pressure range

P100 0...100 psi Gauge pressure range

P160 0...160 psi Gauge pressure range

P200 0...200 psi Gauge pressure range

P300 0...300 psi Gauge pressure range

P400 0...400 psi Gauge pressure range

P600 0...600 psi Gauge pressure range

XXXX Other - consult factory

PX PSI - Single scale

3

PC PSI outside / Kg/cm

PK PSI outside / KPA inside in red

PB PSI outside / BAR inside in red

SP Special scale

4

LM Lower mount

BK

22 Tri-Clamp

5

57F Cherry Burrell - I-Line Female

57M Cherry Burrell - I-Line Male

58 APC

XX Other - consult factory

Description - Stainless Steel Gauge 2½" or
4" with Diaphragm Seal - all SST Internals

Dial Size

Pressure Range

Pressure Units

2

inside in red

Connector Location

Center back mount (2½") or Lower
back mount (4.0")

Diaphragm Seal Design

®

Field no. Code

10 1.0 " connector

15 1.5 " connector

6

20 2.0 " connector

25 2.5 " connector

30 3.0 " connector

40 4.0 " connector

ES

7

MO Monel 400 (2.4360)

HC Hastelloy C276 (2.4819)

XX Other - consult factory

07

59

8

92

93

XX Other - consult factory

9

LPC Polycarbonate

LPS Polysulfone

FGL

XEP

XMT

WSS Instrument TAG, stainless steel

10

RS6 Restrictor, SS 0.6 orice

RS3 Restrictor, SS 0.3 orice

CE2

CE4 4” Cooling Element - (Tmax +500°F)

XAC

XNI

XXX Other - consult factory

Description - Stainless Steel Gauge 2½” or
4” with Diaphragm Seal - all SST Internals

Process Connection (see note 6)

Wetted Parts Material

Electropolished 316L SS (1.4435)
Ra ≤ 15 µin (except for weld seam)

System Fill

KN7 - Glycerine 99.7% USP (1000cSt)

- (see note 1) FDA 21 CFR 182.1320

KN59 - Neobee M20
FDA 21 CFR 172.856, 174.5

KN92 - MINERAL OIL Lubepharm
(23cSt) FDA 21 CFR 172.878,

178.3620(a): USP, EP

KN93 - DC200 SILICONE OIL
(350cSt Food Grade) FDA 21 CFR 173.340

Window Material

Options - (see note 2)

Glycerine case ll - change model # to

M933.3A

Wetted parts electro-polished w/
certicate (see note 4)

Material Certicate 3.1 EN10204
(metal only) (see note 4)

2" Cooling element - (see note 3)
(Tmax +350°F)

Autoclave design, case with 2 weep
holes (see note 5)

NIST Certicate of Calibration per 3.1
EN10204

WIKA Datasheet M93X.3A · 04/2017 Page 3 of 4

Notes:

1) Glycerine (07) is not available for vacuum & compound pressure measurement ranges. Consult factory for exceptions.

2) List options in alphabetical order at the end of the configuration code.

3) Cooling elements are welded to the diaphragm seal

4) All product under this model series is provided with calibration protocol, electropolish finish, and material based information report
as standard. Documentation per 2.2 EN10204

5) Autoclave design requires polysulfone window (LPS) and dry gauge case (M932.3A).

6) Size limitation for Cherry Burrel and APC both available in 1.5” and 2”.

Order Sample

MODEL

DIAL SIZE

PRESSURE RANGE

PRESSURE UNIT

CONNECTOR LOCATION

DIAPHRAGM SEAL DESIGN

WETTED PARTS

PROCESS CONNECTION

MATERIAL

SYSTEM FILL

WINDOW MATERIAL

OPTIONS

M932.3A 40 P100 PX LM 22 20 ES 92 LPC XXX

Field no.

1 2 3 4 5 6 7

8 9 10

Part Number

Serial Number

Diaphragm Information

Marking sample on back side of the stainless steel case

WIKA Datasheet M93X.3A · 04/2017 Page 4 of 4

Specications given in this leaet represent the state of engineering at the time of printing.
Modications may take place and the specied materials may change without prior notice.

WIKA Instrument, LP

1000 Wiegand Boulevard

Lawrenceville, GA 30043-5868
Tel: 888-WIKA-USA • 770-513-8200
Fax: [phone]
E-Mail: [e-mail]
www.wika.com