Description; Hazardous Materials - JUMO Wtrans p Notice De Mise En Service

1 Introduction
1.2

Description

The pressure transmitter with wireless data transmission Wtrans p is intended for industrial applications.
It is used in combination with a Wtrans receiver for stationary or mobile recording of the pressure in liq-
uefied or gaseous media. The pressure transmitter operates according to the strain gauge measuring
principle.
The measured values are transmitted wirelessly to the receiver of the Wtrans system. The measured
values are displayed on the receiver and are available at the RS485 interface in digital form as well as
in electrical standard signals at the analog outputs. Optionally, different alarms can be signaled at the
receiver with two relay outputs.
The pressure transmitter can be installed in any installation position. Optimum alignment with the receiv-
er must be ensured. The ambient temperature range in which the device can be used is from -30 to
+85 °C.
The radio frequency of the Wtrans measuring system is 868.4 MHz (Europe). This frequency is almost
impervious to external interference and allows data to be transmitted even in harsh industrial environ-
ments. When using the antenna holder for wall mounting with the 3 m antenna cable for the receiver, the
open air range is up to 300 m.
A 3.6 V lithium battery (size C) is used to supply voltage to the pressure transmitter.
A setup program is available as an accessory for easy configuration and parameterization of the pres-
sure transmitter and the Wtrans receiver on the laptop/PC. As an optional extra, the OnlineChart function
can be used to record the measured values on the laptop/PC.
1.3

Hazardous materials

Using hazardous materials as a medium may result in abrasive and corrosive damage to components
of the product that come into contact with the medium. The medium may leak and present a fire hazard
and a risk to health.
Carry out a risk assessment taking into consideration the safety data sheet for the hazardous substances
concerned for mounting, operation, maintenance, cleaning, and disposal:
• Comparison and systematic checking of the durability of the components of the product that come
into contact with the medium and the admissible environmental influences.
• Assessment of the risk to people and the environment.
• Assessment of the fire hazard due to the materials of the product, the admissible environmental in-
fluences, and the voltage supply.
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