Head Office:
Engineering:
Unit B, Cranmere Court
Unit 13 Langley Business Court
Okehampton Devon
Worlds End Newbury
EX20 1UE UK
RG20 8RY
Tel: +44(0) 1844339993 Fax: +44(0)1844339996
Email:
Web Site:
www.quantumcryogenics.com
ATEX-DCT150M-W-28.02.20-00003R5
allows continuous transmission of the sensor temperature and battery life to the communication
device without requirement for cabling. An NFC device is fitted to the unit that can be used to switch
on the wireless device, allowing the units to be purchased and stored without depleting the battery
life. The NFC can also be used with smart phone applications for changing the display from C to F and
also for logging of data which can be downloaded to a smart phone. If interfacing with a wireless
system please contact Quantum Production for further details.
The near field communication of this device must not be used in a hazardous area and it should also
be noted that the equipment should not be exposed to strong electromagnetic fields exceeding 1A/m
rms or 3V/m rms when located in a hazardous area.
This transmitter has been approved for use a separation distance of at least 20 cm from all persons.
The installer and user must take measures to avoid accumulation of static charge on the non-
conductive enclosure surface. Please refer to instructions in cleaning section below.
No changes or modifications to the product can be made unless they have been expressly
approved by Quantum Cryogenics as this could void the user's authority to operate the
equipment.
MOUNTING THE SENSOR
In order to monitor the authentic temperature of the tank and its contents, good thermal contact
must be made between the temperature sensor and the tank. It is therefore important to mount the
sensor in an effective manner to achieve this.
The sensor is housed in a stainless steel tube of diameter approximately 6mm and length 50mm at the
end of a flexible lead. The temperature probe is an isolated metal part with capacitance of 75pF.
Isolated metal parts can accumulate electrostatic charge, which can potentially be sufficient to cause
an ignition of flammable atmospheres. The capacitance is a measure of how much charge they could
store. The user/installer must determine whether this would present a hazard in the installed
configuration. For example, if the isolated part is installed in an area with a high, dust laden airflow, it
is likely that it could accumulate a significant charge. If it is earthed to a metal frame, however, and
under cladding without significant airflow, then it would be less likely to accumulate a charge.
