Customer Services (858) 578-7887 & (888) GO IN
TEC
IN
TEC
Controls, 12700 Stowe Dr., Suite 1
0
0, Poway, CA 92064
Fax (858) 578-4633 & (888) FX IN
TEC
www.inteccontrols.com
Specification subject to change without notice.
Printed in USA 130917
Polygard® is a registered trademark of MSR
DGC3
PolyGard
®
Digital Gas Controller
User Manual - DGC3
Page 16
3.6.3 Measuring Range
The measuring range can be defined arbitrarily between 10 and 10000. The measuring ranges in the table gas
type are only recommendations without obligation.
The measuring range must agree with the range of the attached gas transmitter.
3.6.4 MP Signal
Gas transmitters using electro-chemical or catalytic beat gas sensors normally produce a linear signal,
proportional to the gas concentration.
Semiconductor gas sensors produce a non-linear (exponential) signal due to their measuring principle. This signal
leads to a non-linear output signal of the gas transmitter.
The Gas Controller DGC3 is prepared for both types, for gas transmitters with linear signal as well as for analog
transmitters with semiconductor sensor and non-linear signal. The signal type is defined in this menu.
Symbol Description
Setting
Status
Function
MP 01
Measuring Point
Selection of MP No.
Linear
MP Signal
Linear
Linear = Transmitter with linear output signal
Non linear = Transmitter with non-linear output signal
3.6.5 Threshold / Hysteresis
For each measuring point four alarm thresholds are available for free definition. If the gas concentration exceeds
the adjusted alarm threshold, the associated alarm is set. If the gas concentration falls below the alarm threshold
inclusive hysteresis the alarm is reset again.
Unused alarm thresholds have to be defined with full scale value, in order to avoid false alarms.
For O
2
measurement: Pay attention to the alarm activation at decreasing or increasing concentration!
Symbol Description
Default
Status
Function
MP 01
Measuring Point
Selection MP No.
40 ppm Threshold
40
80
100
120
15
Threshold 1
Threshold 2
Threshold 3
Threshold 4
Hysteresis
Gas concentration > Threshold 1 = Alarm 1
Gas concentration > Threshold 2 = Alarm 2
Gas concentration > Threshold 3 = Alarm 3
Gas concentration > Threshold 4 = Alarm 4
Gas concentration < (Threshold X –Hysteresis)
= Alarm X OFF
3.6.6 Delay of Alarm ON or OFF
Definition of alarm ON and/or alarm OFF delay. The function applies to all alarms of an MP.
Symbol Description
Default
Status
Function
MP 01
Measuring Point
Selection of MP No.
0 s
Delay Time ON 0
Gas concentration > Threshold: Alarm is only activated at the end
of the fixed time (sec.). 0 sec. = No Delay
0 s
Delay Time OFF 0
Gas concentration < Threshold: Alarm is only deactivated at the
end of the fixed time (sec.). 0 sec. = No Delay
The delayed activation of an existing gas alarm can cause damage to persons and objects.
The commissioning technician and/or the operator are solely responsible for the activation.
Specifications subject to change without notice. | USA 130917 | Page 16 of 22
12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.IN
TEC
| relevantsolutions.com/inteccontrols
DGC3 – UserManual
Polygard® is a registered trademark of MSR | DGC3
Specifications subject to change without notice. | USA 160104 | Page 16 of 22
12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.IN
TEC
| relevantsolutions.com/inteccontrols
DGC3 – UserManual
PolyGard
®
is a registered trademark of MSR-Electronic GmbH | DGC3
INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com
Specifications subject to change without notice. | USA 200211 | Page 16 of 22
DGC3 – UserManual
