Det-Tronics U9500 Infiniti Gas Transmitter - Manual (Page 15)

95-8444 13 10.1
Table 3—Display And Controls
Table 4—CAL/RESET Switch and Calibration Magnet Function
Display/Indicator Description
Ex %LFL / ppm
This display is always on and functions as a power indicator.
The display provides a continuous reading of the sensor input in both the Normal and
Calibrate modes.
In the event of a fault, it identifies the nature of the fault with a fault message.
In other operating modes it shows the alarm setpoints and programmed calibration
gas concentration.
A negative zero drift condition is indicated by a minus (–) sign in the left hand digit.
In the event of an over-range condition, the display will continue to track the sensor
output as long as the over-range condition exists. Combustible gas transmitters will
latch the display at the highest detected gas concentration.
*
Alarm History Indicator
Asterisk indicates an alarm (any one) has activated since last reset.
Blank indicates no alarm has energized since last reset.
n High Alarm Status Indicator
Solid black square indicates that the high alarm threshold has been exceeded.
For relay models, this means that the relay output has activated.
Blank indicates no alarm.
n Auxiliary Alarm Status Indicator
Solid black square indicates that the auxiliary alarm threshold has been exceeded.
For relay models, this means that the relay output has activated.
Blank indicates no alarm.
n Low Alarm
Solid black square indicates that the low alarm threshold has been exceeded.
For relay models, this means that the relay output has activated.
Blank indicates no alarm.
INCREASE
ms
Used to move to next higher setting during system programming.
SETUP
m
ACCEPT
Used to initiate Setup routine, to accept reading displayed, and cycle to the next
programming step during Setup (system programming).
DECREASE
tm
Used to move to next lower setting during system programming.
CAL/RESET
Used for non-intrusive calibration and transmitter reset.
Activated by Cal Magnet from outside the Infiniti enclosure.
Duration of
CAL/RESET
Switch Activation
Function
1 Second Resets the Infiniti transmitter
2 - 3 Seconds Enters the Setpoint Display Mode
7 Seconds Enters the Calibration Mode