JUMO 902930 Wtrans Transmitter RTD Temperature Probe with Wireless Data Transmission Operating Manual - Manual (Page 6)

1 Introduction
6
1.2 Description
Wtrans probes are used in connection with corresponding Wtrans receivers for mobile or sta-
tionary temperature measurement within the application range of -30 to +260 °C or -
200 to +600 °C. The ambient handle temperature must be between -30 to +85 °C
(-25 to +125 °C). The measured temperature value is transmitted wireless to the receiver of the
Wtrans system, displayed on the system and provided on the Wtrans receiver as a digital
RS485 interface and analog outputs and/or relay outputs. The radio frequency within the ISM
band (Industrial, Scientific and Medical Band) is 868 MHz or 915 MHz. These frequencies are
almost insensitive to external interferences and allow transmission even in a rough industrial
environment. When using the antenna wall holder with the 3 m long cable for the receiver, the
open air range is 300 m.
The RTD temperature probe transmitter is fitted in the oil-resistant and acid-proof handle. The
system is of a vibration proof design.
The protection type is IP67. The stainless steel sheath is available with flat, chisel or pointed
insertion tip. The fitting length is between 50 to 1000 mm (10000 mm). The measuring insert is
equipped with a Pt1000 temperature probe as per DIN EN 60751, class A in 3-wire circuit as a
standard.
The 902930/50 and 902930/60 basic type is additionally equipped with a stainless steel neck
pipe and an M 12 connector for the attachment of Pt1000 RTD temperature probes. Power
Supply to the Wtrans temperature probe is provided by a 3.6 V lithium battery.