Contrive Qzero Manual

The Qzero flame detector relay is a safety switch for
monitoring the presence of flames via ionization
electrodes or UV sensors.
A redundant 3 channel architecture with diagnostics
ensures safety even for applications intended for
continuous operation.
For continuous operation with UV detection, sensors
must be of the self-checking type or equipped with a
shutter controlled by external safety logic.
Qzero could be used to monitor burner flame in
conjunction with automatic flame safeguards or PLCs,
it can also be used where manual or semiautomatic
control is allowed.
Qzero could be used also like fire alarm system to
detect any flame, spark or electric arc when used with
UV sensors (up to 10 detectors allowed).
A relay contact is activated when the presence of flame
is detected, while a second relay contact signals the
failure when the presence of flame is not confirmed by
all the independent channels.
Read and understand this manual before installing, operating, or servicing this unit. This unit must be installed
according to this manual and local regulations. The drawings may show units without covers or safety shields to
illustrate details. Disconnect power supply and follow all usual safety precautions before carrying out any operation
on the device. Be sure to reinstall covers or shields before operating any devices.
The device is not user serviceable, a faulty device must be put out of order and sent back for servicing.
CONTRIVE manufactures products used as components in a wide variety of industrial systems and equipment. The
selection and application of products remain the responsibility of the equipment manufacturer or end user.
CONTRIVE accepts no responsibility for the way its products are incorporated into the final system design. All systems
or equipment designed to incorporate a product manufactured by CONTRIVE must be supplied to the end user with
appropriate warnings and instructions as to the safe use and operation of that part.
Any warnings provided by CONTRIVE must be promptly provided to the end user.
CONTRIVE guarantees for two years from the date of manufacture of its product to replace, or, at its option, to repair
any product or part thereof (except fuses and with some limitations for tubes and photocells) which is found defective
in material or workmanship or which otherwise fails to conform to the description of its sales order. CONTRIVE makes
no warranty of merchantability or any other warranty express or implied. CONTRIVE assumes no liability for any
personal injury, property damage, losses, or claims arising from misapplication of its products.
▪ Gas Equipment Directive (2009/142/EC)
▪ Low Voltage Equipment Directive (2014/35/EC)
▪ EMC Directive (2014/30/EC)
IN CONJUCTION WITH:
EN298 EN746-2 EN60730-1 EN13611
© 2024 CONTRIVE • B8200.EN
SAFETY INFORMATION
CERTIFICATION
PRELIMINARY
0224
▪ EU type certification
CE xxxxXXxxxx
▪ Eurasian Customs Union
MEETS TECHNICAL SPECIFICATIONS OF
RUSSIAN FEDERATION, BELARUS AND KAZAKHSTAN
1
FLAME DETECTOR RELAY
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