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A Honeywell Company
IRD 810 / 820
740e/05/94
INTRODUCTION
The IRD 810 or 820 is employed to monitor the flame of an
oil and/or gas burner. This flame monitoring device should
be connected to a Satronic oil or gas burner control box.
Monitoring is based on the infra-red flicker principle, in other
words, the flickering infra-red light of the flame is detected.
The steady radiation from, for example, the glowing refractory
layer on the inside of the boiler, has no effect on the detector.
The detectors are also available in 110 V versions or in an
industrial version which has a particularly robust and water-
proof detector probe.
TYPES AVAILABLE
IRD 810 No potential difference at working contact
4-pole connection
IRD 820 With simulation of ionisation current
For 3-pole connection to Satronic gas burner
control boxes
CONSTRUCTIONAL FEATURES
The monitoring device consists of the detector probe and
the electronics. The infra-red sensor and the pre-amplifier
are hermetically sealed in glass and along with the electronics
form an integral part of the flame detector.
The indicator control unit contains a mains transformer and
a relay which transmits the flame signal to the appropriate
control box via a working contact which carries no other
potential difference. Signal strength is indicated by a row of
5 LED’s. Beside the LED’s is a potentiometer for infinitely
variable adjustment of the sensitivity.
A fixed cable runs between the flame detector and the
indicator control unit. This cable must not be disconnected.
Power is supplied through either a 3 or 4-core cable (live,
neutral and flame signal).
Infrared Flicker Detector
TECHNICAL DATA
Supply voltage 220 / 240 V (-15... +10%)
50 Hz (40 - 60 Hz)
Power consumption 2 VA
Max. current output terminal 2 A, 250 V
Permissible ambient temp. -20° to +60° C
Insulation standard IP 41
Mounting attitude any
Weight 250 g
Flame viewing attitude side-on and end-on
Spectral response 800 - 1100 nm
Max. sensitivity 950 nm
Frequency range 15 - 150 Hz
Max. sensitivity 30 Hz
Response time 0,1 sec.
Cancelling time 0,5 sec.
Cable length, detector -
indicator ctrl. unit
Normal version 0,5 m
Industrial version 1,0 m
Flame monitoring device for
oil and/or gas flames
With a row of 5 LED indicators and
adjustable sensitivity
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