WIKA 111.11 User Manual

Operating

instructions

GB

Pressure gauge models 1 and 213

per directive 94/9/EC (ATEX)

II 2 GD c TX

31014275.01 08/2011 GB/D

Contents

1. Safety

2. Description

3. Specications and intended use

4. Commissioning

5. Maintenance and cleaning

Appendix 1: Declaration of conformity for
models 111.xx, 113.53, 213.40 and 213.53

Declarations of conformity see www.wika.com
Specications: see data sheet on www.wika.com
Subject to technical modications.

© 2011 WIKA Alexander Wiegand SE & Co. KG

WIKA Alexander Wiegand SE & Co. KG

Alexander-Wiegand-Straße 30

63911 Klingenberg • Germany

Tel. [phone]
Fax [phone]
E-Mail [e-mail]
www.wika.de

1. Safety

WARNING!

Before installation, commissioning and operation, ensure that the appropriate
pressure gauge has been selected in terms of measuring range, design and
specic measuring conditions.

■

Check the compatibility with the medium of the materials subjected to pressure!

■

In order to guarantee the measuring accuracy and long-term stability specied, the
corresponding load limits must be observed.

■

Non-observance can result in serious injury and/or damage to the equipment.

■

Only qualied persons authorised by the plant manager are permitted to install, maintain
and service the pressure gauges.

2. Description

■

Nominal sizes

Model 111.10: NS 40, 50, 63, 80, 100, 160 Model 113.53: NS 40, 80, 100
Model 111.11/16: NS 40, 50, 63 Model 213.40: NS 63, 80
Model 111.12: NS 40, 50, 63, 80, 100 Model 213.53: NS 50, 63

■

The instruments measure the pressure by means of resilient Bourdon tube pressure
elements

■

The measuring characteristics are in accordance with the EN 837-1 standard

3. Specications and intended use

Pressure limitation

Steady: 3/4 x full scale value
Fluctuating: 2/3 × full scale value
Short time: Full scale value

Mechanical connection

In accordance with the general technical regulations for pressure gauges (e.g. EN 837-2
"Selection and installation recommendations for pressure gauges").

When screwing gauges in, the force
required for this must not be applied through
the case, but rather through the spanner
ats (using a suitable tool) provided for this
purpose on the square shaft of standard
connections.

Installation with
open-ended
spanner

Correct sealing of pressure gauge connections with parallel threads  must be made using
suitable at gaskets, sealing rings or WIKA prole sealings. The sealing of tapered threads
(e.g. NPT threads) is made by providing the thread  with additional sealing material such
as, for example, PTFE tape (EN 837-2).

Spanner ats

Sealing face 

Sealing in the
thread 

The torque depends on the seal used. Connecting the gauge using a clamp socket or a
union nut is recommended, so that it is easier to orientate the gauge correctly.

When a blow-out device is tted to a pressure gauge, it must be protected against being
blocked by debris and dirt.

After mounting, set the compensating valve (if available) from CLOSE

to OPEN.

Temperature eect

When the temperature of the measuring system deviates from the reference temperature

(+20 °C):

max. ±0.4%/10 K of full scale value

Ingress protection per EN 60529 / IEC 529

Model 111.xx: IP 42

Models 113.53, 213.40 and 213.53: IP 65

Permissible temperatures

Ambient:

Model 111.xx: -40 ... +60 °C

Models 113.53, 213.40 and 213.53: -20 ... +60 °C

Medium: max.

+60 °C

Attention! With gaseous substances, the temperature may increase as a result of
compression warming. In these cases it may be necessary to throttle the rate of change
of pressure or reduce the permissible medium temperature.

The eective maximum surface temperature is not only dependant upon these instruments,
but mainly on the respective medium temperature!

Materials

Wetted parts: Cu-alloy
Movement: Cu-alloy
Dial: NS 40, 50, 63: Plastic

NS 80, 100, 160: Aluminium
Pointer: Plastic (NS 160: Aluminium)
Case: Models 111.10, 111.12, 111.16: Plastic

Model 111.11: Steel

Models 113.53, 213.53: Stainless steel

Model 213.40: Forged brass

Window: Plastic (NS 160: Instrument glass)

Installation

■

Nominal position per EN 837-1 / 9.6.7 Figure 9: 90° ( ⊥ )

■

Process connection lower mount (LM) or back mount (BM)

■

In order to avoid any additional heating, the instruments must not be exposed to direct
solar irradiation while in operation!

■

Pressure gauges must be earthed via the process connection!

Permissible ambient and operating temperatures

When mounting the pressure gauge it must be ensured that, taking into consideration the
inuence of convection and heat radiation, no deviation above or below the permissible
ambient and medium temperatures can occur. The inuence of temperature on the
indication accuracy must be observed.