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4-20 mA SENSOR / TRANSMITTER
MODEL TR-5200/TR5500
Operations & Maintenance Manual
TR5500 TR5200
COMBUSTIBLE GAS SENSOR/TRANSMITTER
INSTALLATION:
1. Locate a flat surface to mount the enclosure so that the sensor can face
downward. There is a power entry at the top.
2. Remove the cover of the enclosure by removing the 4 screws in the corners
of the TR5200, or unscrewing the lid of the TR5500.
3. Connect the electrical fittings to the enclosure and bring in the electrical
wires. NOTE: BE SURE WIRING IS DONE ACCORDING TO THE
LOCAL ELECTRICAL CODE REQUIREMENTS.
Connect the wires to the terminal block as shown on the wiring drawing.
(See Fig.1) Use 18 gauge minimum wire. It is recommended that shielded
wire be used if it is not being run in metal conduit.
4.
CALIBRATION:
The sensor/transmitter must be connected to the controller.
Allow the sensor three to five minutes to warm-up before calibrating.
1. Connect negative lead of voltmeter to test point C (YELLOW).
Connect positive lead of voltmeter to test point D (WHITE). Apply
“zero” gas to the sensor. (ambient air may be used if it is certain
there are no contaminants in the area). Adjust VR2 (ZERO) to
0.0Volts ± 0.020V.
2. Connect negative lead of voltmeter to test point A (BLACK).
Connect positive lead of voltmeter to test point E (RED). Adjust
VR4 (CURRENT) to 0.400 Volts. If an ammeter is available it is
preferable to connect it in line A1 and adjust VR4 to read 4.00 mA.
3. Refer to graph below, apply calibration gas to the sensor at a rate of
.5 LPM. Adjust VR3 (SPAN) to a voltage corresponding to the %
LEL calibration gas used. The formula below can also be used to
determine the voltage value.
In the example below, if 50 % LEL calibration gas is used, the span voltage
is 1.2 volts.
1
CALIBRATION (Con’t)
NOTE: The system voltage, measured between point A (BLACK) (negative) & point F
(RED) (positive), is factory set. Do not change this voltage value.
The sensor voltage, measured between point A (BLACK) (negative) & point B
(YELLOW) (positive), is factory set and the value is sensor type dependent. Do
not change this voltage value. Damage to the sensor will result if the voltage
is set too high. For the TR-5200 this is 4.25 volts. For the TR5500 it is 3.50
volts.
THE SIX TEST POINTS
ON THE LEL BOARD
ARE AS FOLLOWS:
A - GROUND BLACK
C - ZERO TEST POINT YELLOW
D - SPAN TEST POINT WHITE
E - 4-20mA TO VOLTS RED
B- SENSOR VOLTAGE
F - SYSTEM 10 VDC +/- 0.5V
B
C
D
+
-
SIG
VR1
SENSOR V
SEN
VR2 VR3
ZERO SPAN
A
F
E
VR4
CURRENT
+ - A1
INPUT
CONTROLLER
+-
A1
Fig. 1
SENSOR
V =
% CONCENTRATION OF CALIBRATION GAS
100 % (MAXIMUM RANGE)
[ ]
X 1.6
+ 0.4
2
LAYOUT – TR5200
MODEL TR-5200
4.80
4.00 2.40
4.00
6.60
AirTest Technologies Inc
Drawn By Drawing No. Rev
TR-5200 LAYOUT
TR5200WLayout.tcwdcm
COMBUSTIBLE
GAS
DETECTOR
3
LAYOUT – TR5500
AirTest Technologies Inc
Drawn By Drawing No. Rev
6.80
2.85
3.50
5.10
TR-5500 LAYOUT
dcm TR5500WLayout.tcw
SCALE 1" = 2"
Circuit Enclosure - Class 1, Division 1, Groups B, C & D
Sensor Enclosure - Class 1, Division 1, Grpups A, B, C &D
GUAC
GUFC
GUAC/GUFC
4
WIRING
AirTest Technologies Inc
Drawn By Drawing No. Rev
Signal Return
Internal Load
Resistor
with 4-20mA input
Controller
Note - Supply voltage must be 10 volts
higher than maximum controller voltage.
On a 0 to 10 volt controller the minimum
supply voltage required is 20 volts.
For Controller with voltage
input. R Value...
5 volt input use 250 ohm
10 volt input use 500 ohm
External Load resistor
TR-5200 WIRING
TR5200WWire.tcwdcm
B
C
D
+-SIG
VR1
SENSOR V
SEN
VR2VR3
ZEROSPAN
A
F
E
VR4
CURRENT
+
-A1
INPUT
B
C
D
+-SIG
VR1
SENSOR V
SEN
VR2VR3
ZEROSPAN
A
F
E
VR4
CURRENT
+
-A1
INPUT
+
+
SIG(A)
-
CT-2100
&
CT-1000
CONTROLLERS
12 to 24 VDC
Power Supply
+
-
-
TR-5200/TR5500
TR-5200/TR5500
5
WARRANTY:
ATI AirTest Technologies, Inc ( the company) warrants all instruments manufactured
by them to be free from defects in materials and workmanship under normal use and
service for a period of one year. Electrochemical and Catalytic Bead sensors
purchased from sensor manufacturers will be warranted to the extent offered by the
manufacturer. The company’s obligation of this warranty shall be limited to the repair
or replacement of any part found to be defective. The company shall not be obligated
to repair or replace units that are found to be in need of repair because of damage,
(other than normal wear and tear), tampering or modification. The detector must be
returned to AirTest suitably packaged and with freight prepaid. Liability is limited to
the replacement cost of a new unit. In no case shall the company be liable for any
consequential or incidental damages however caused. No agent, dealer or employee
of the company has the authority to increase or alter the obligations or limitations of
this warranty.
SPECIFICATIONS:
Sensing Element Catalytic Bead
Standard Range 0 to 100 % LEL
Combustible gas
Gas Sampling Method Diffusion
Linearity Linear
Operating Temperature -20°C to +50°C
-4°F to +122°F
Dimensions(LxWxD) in. TR5200-6.2 x 4 x 2.4 TR5500-6.8 x 3.5 x 4
cm. 15.6 x 10 x 6 17.3 x 9 x 7.6
Humidity ( non-cond.) 0 to 90%
Sensor Life Expected 3+ years
Calibration Interval 12 months
Warm-up Time < 3 minutes
Response Time < 1 minute
Power Requirement 12 to 30 VDC
Power Consumption < 2 watts
Output 4-20 mA
Enclosure Material TR5200-PVC, TR5500 Cast Aluminum
Weight TR5200-16 ounces, TR5500-4 lbs.
Approvals TR5200-CSA/NRTL
TR5500-CSA/UL Cl.1, Div.1
6
ATI AirTest Technologies, Inc
#9, 1520 Cliveden Avenue
Delta, BC, V3M 6J8
Ph. 604-517-3888
Fx. 604-517-3900
e-mail [email protected]
website www.airtesttechnologies.com
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