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.tcw
dcm
COMBUSTIBLE
GAS
DETECTOR
3