Carbon Monoxide (CO) RS-485 Digital Gas

Carbon Monoxide (CO) RS-485 Digital Gas Transmitters
Specifications subject to change without notice. | USA 180308 | Page 1 of 3
DESCRIPTION
PolyGard®
DT5-1112 V4
Digital RS-485 communicating, addressable gas transmitters, for the
detection of carbon monoxide (CO) in the ambient air for direct daisy-chain/
multi-drop link to the DGC digital controller. Standard units communicate
with DGC Series controllers only. Optional Modbus or BACnet-MSTP
communications for connection to other controllers.
Included 4-20 mA analog input channel can also be used for remotely
monitoring any additional gas detection or environmental sensor.
APPLICATION
To sense carbon monoxide (CO) in a wide variety of commercial and industrial
applications, such as vehicle exhaust in parking structures, engine repair
shops, tunnels, equipment rooms and ventilation systems, etc., and to transmit
to the DGC central controller unit or other Modbus/BACnet master device.
FEATURES
• Continuous monitoring
• RS-485 serial communication
• Optional Modbus or
BACnet-MSTP protocol
• Plug-in, electrochemical sensor
with low cross-sensitivity
to other gases
• 4-20 mA input from remote
analog transmitter
• Overload & short circuit protected
• Modular plug-in technology simplifies mounting and wiring
• High-impact polycarbonate enclosure, NEMA 4X standard
• Fast commissioning and
easy maintenance
NRTL Performance Tested
ANSI/UL 61010-1
CE
City of Los Angeles Approved
SPECIFICATIONS
Electrical
Power supply
18-28 VDC, polarity protected
Power consumption
10 mA (0.3 VA), max.
Sensor Performance
Gas detected
Carbon monoxide (CO)
Sensor element
Electrochemical, diffusion
Range
0-250 ppm factory set
Stability & Resolution
± 3.0 ppm of reading
Repeatability
± 3.0% of reading
Long term output drift< 0.4% signal loss/month
Response time
t90 ≤ 50 sec.
Sensor life expectancy
3-5 years, normal operating
environment
Sensor coverage
5,000 sq.ft., max. 10,000 sq.ft.
(465 m², max. 930 m²),
under “ideal conditions”
Installation Location
Mounting height
5 to 6 ft. (1.5 to 1.8 m) above floor
Type of Control
General
Continuous proportional sensor
signal
Output signal for
serial communication
Digital, RS-485,
proprietary protocol, 19200 baud
(Modbus or BACnet-MSTP
optional)
AT series remote gas
transmitter input capability
- analog input
(1) 4-20 mA, overload and short
circuit protected
- power output
24 VDC, max. load 50 mA
Environmental
Permissible ambient
- working temp, continuous 14°F to 122°F (-10°C to 50°C)
- working temp, short-term -4°F to 122°F (-20°C to 50°C)
- storage temperature
41°F to 86°F (5°C to 30°C)
- humidity
15 to 95% RH, non-condensing
- working pressure
Atmospheric ± 10%
Physical
Enclosure “A”, standard
-material
Polycarbonate,
UL 94 V2, fire-retardant
- conformityUL 50
- color
Light gray
- protection
NEMA 4X (IP65)
- installation
Wall (surface) mounted, or
single gang electrical box
Dimensions (H x W x D)
5.12 x 3.70 x 2.25 in.
(130 x 94 x 57 mm)
Cable entry
1 hole for 1/2 in. conduit for wall
(surface) mounting, and 1 hole on
back side of base plate for single
gang electrical box mounting
12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | relevantsolutions.com/inteccontrols
DT5-1112 V4
Specifications subject to change without notice. | USA 180308 | Page 2 of 3
SPECIFICATIONS
Physical (cont...)
Wire connection
Wire size
Weight
Approvals/Listings
- unit rating
- enclosure
Warranty
OPTIONS
Heater, built-in
Ambient temperature
Power consumption
Thermostatic control
Terminal blocks,
screw type terminal
Min. 24 AWG (0.25 mm²),
Max. 14 AWG (2.5 mm²)
“Each terminal connection can
handle two 18 AWG wires”
0.6 lb (0.25 kg)
For low temperature environment
-40°F (-40°C)
0.2 A (5 VA), max.
32°F (0°C) ± 5°F (3°C)
ACCESSORIES
ADT-ENCL-DKIT-A
NRTL Performance Tested
ANSI/UL 61010-1
CE
City of Los Angeles Approved
VDI 2053, air treatment systems
for garages and tunnels
EMC-Compliance 2004/108/EWG,
low voltage directives 73/23/EWG
UL Listed, E208470
CSA Certified, E208470
Two years material and
workmanship, 12 months normal
exposure for sensor element
Duct Kit for Type “A” Enclosure:
replacement enclosure,
10 in. probe,
6 ft. of tubing
ORDERING INFORMATION
DT5 - 1112 - A - 2 0 4 1 X X
BACnet only; see below
Enclosures
A
Options
0
1
B
Wall, NEMA 4X
M
A = Standard
XX
(Product label “DT5-1112-A-2041 V4”)
None
Heater
BACnet-MSTP
Comm.
Modbus Comm.
0 = Standard
(Required with BACnet communication “B” option)
Calibration Feature
1
4
Switch/Pot addressing and
calibration (Required with
BACnet communication
option)
Direct connect to digital
service tool (no switch/pots)
L
H
1 to 60
61 to 120
1
0-250 ppm CO
1 = Standard
4 = Standard
ACCESSORIES FOR DT5-/AT-/LC- SERIES
ADT-ENCL-DKIT-A
MAC Address Range
Range
Duct Kit for Type “A” Enclosure
Baud Rate
1
2
3
9600
19200
38400
12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | relevantsolutions.com/inteccontrols
DT5-1112 V4
Specifications subject to change without notice. | USA 180308 | Page 3 of 3
WIRING CONFIGURATION
DT5-1112
X4
B
7
A
6
RS-485 digital communication link
5
<
X5
1
2
4-20 mA Signal input
3
4
3
(+)
2*
(–)
4
24 VDC Power output for
(1) remote analog transmitter
5
24 VDC Power input for
1
(+)
transmitter
Notes:
* Terminal X4 No. 2, common (–),
• No wiring connection
for both power input and output
to terminal block X5
Fig.1
RS-485 digital communication and 24 VDC
power supply, trunk/bus configuration
(+) (–)
(A) (B)
4-20 mA analog transmitter piggybacked
via RS-485 digital transmitter
DT5-1112
RS-485
AT-11.. Ver 3/4
4-20 mA loop powered,
2-wire, no heater
X4
X4
7
7
6
6
4-20 mA
5
4
4
3
24 VDC
3
2
2
1
1
Fig. 3
DT5-1112
RS-485
AT-33.. Ver 3/4
4-20 mA, 3-wire,
no heater
B 7
A 6
X4
–
2
+
1
X4
DT5-1112
Transmitters
B 7
2
+
1
X4
7
7
4
2
X4
4-20 mA
5
3
A 6
X4
–
X4
6
Fig.2
5
6
5
4
24 VDC
3
(–)
2
1
1
Fig. 4
(+) (–)
(A) (B)
24 VDC
RS-485
Installation notes:
• Connect-Air #W184C-2059B cable or equivalent (18 AWG;
two individually twisted/shielded pairs; all wires different colors).
• Cable must be “daisy-chained” through transmitter/relay module.
“T” drops and “star” configurations are not permitted.
• Bus/trunk cable should not be installed in same conduit with high
voltage lines.
• The polarity A to A and B to B must be maintained throughout
the system.
• Shields should be continuous but not connected or shorted to
ground anywhere in the system.
• Do not connect power to RS-485 communication pair A and B;
this may damage transmitter/relay modules or controller.
•560 Ω resistor must be installed between terminals 6 and 7 on
the last device on every trunk.
• See controller data sheet for maximum number of transmitters
and trunk length.
With optional heater:
• The wiring and DC power supply must be sized appropriately for
a power of 0.3 A, 24 VDC!
• AT transmitters with heater must be 3-wired as shown in Fig 5.
4-20 mA analog transmitter (w/ heater) piggybacked
via RS-485 digital transmitter, 3-wire required
DT5-1112
RS-485
AT-11/33.. Ver 3/4
4-20 mA, 3-wire,
w/ heater
X4
X4
7
7
6
4-20 mA
5
3
3
1
5
4
4
2
6
(–)
2
24 VDC
1
Fig. 5
12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | relevantsolutions.com/inteccontrols
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