Ashcroft km11 Instructieblad

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KM11 PRESSURE TRANSMITTER

INSTRUCTION SHEET

WARNING! READ

BEFORE INSTALLATION

The ATEX approved pressure

transmitter of Ashcroft KM11 family

are designed to sense pressure in

facilities with gaseous or liquid

media. They are usable in zone 1.

Transmitters are affected with the

approval number

TÜV06ATEX2975

and markings

II 2G Ex ia IIC T4 Gb

-40°C ≤ Ta ≤ 85°C

Label

CONDITIONS GOVERNING THE

USE OF THE PRODUCT

General directions

to be complied with at all times for

correct and safe use of the

electronic pressure transmitter:

• Please keep within the limit

values given in the specification

for such items as pressure, force,

torque and temperature.

• Give due consideration to the

prevailing ambient conditions

(temperature, atmospheric

humidity, atmospheric pressure,

etc.)

• Observe the applicable safety

regulations laid down by the

regulatory bodies in the country of

use.

• Use the product only in its original

conditions. Do not carry out any

unauthorized modifications.

• Remove all items providing

protection in transit such as foils,

caps or cartons.

IM KM11Ex EN 08/2015

OPERATING CONDITIONS

• Type testing does not apply to all

ambient conditions without

limitations. The user is

responsible for verifying that the

plug-and-socket connection

complies with the specified rules

and regulations, or whether it may

be used for specialized purposes

other than those intended by use.

• The values given in the technical

data for overpressure safety

relate to the hydraulic or

pneumatic part of the pressure

transmitter.

• The EN 60079-0:2012 and

EN 60079-11:2012 standards

were applied.

• Ambient temperature range

-40 °C up to +85 °C

• Medium temperature range

-40 °C up to +85 °C

• Safety related maximum values of

electrical connection:

30 V DC

50 mA

5 nF

negligible

Consider for connected cable

= 300 pF/m and L

= 1 µH/m

INSTALLATION

Mechanical / pneumatic /

hydraulic:

• Screw the electronic pressure

transmitter into the pressure

connection provided using an

open-jaw spanner of 22 AF size

(as per DIN 894 or similar), with a

tightening torque of approx.

25 Nm.

• To seal the system, use a

standard copper seal with the

appropriate dimensions.

Electrical:

• All wiring should conform to local

codes and must be carried out by

authorized personal only. Keep

high and low voltage wiring

separated. For applications in

critical industrial environment use

special cables.

• Observe without fail the

connecting information – labeled

on the transmitter or laid down in

the operating instructions – while

connecting the pressure

transmitter.

• Ensure that the cables routed

without crushing.

• Electricity supply and wirings

must be suitable for the demands

of the hazardous area.

• The electricity supply of the

transmitter must occur according

to the regulations for intrinsic

circuits. A security (e.g., glaze)

protection is recommended.

• When allocation is valid with

cable connection:

4-wire ventilated or unventilated

cable

red

Loop +

black Loop –

white (not connected)

Indication

Pressure is balanced by a micro

filter (in level sensors by a capillary

in the cable) between the trans-

mitter and the ambient

environment. This allows explosive

mixtures from the ambient

environment to intrude into the

transmitter or it is possible that

mixtures accumulating inside the

transmitter due to diffusion escape

from the housing.

DIMOUNTING

• When disassembling the pressure

system, it must be depressurized.

• Please observe applicable safety

regulations when removing the

pressure transmitter.

DISPOSAL

• Please help to protect the

environment and dispose of or

recycle the devices and

components used in accordance

with the applicable regulations.

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