Button
Button
Button
3-digit LED
Indicator light
Series
LLB1
Specific Product Precautions 4
Be sure to read before handling.
Refer to front matter 43 for Safety Instructions.
Precautions on Digital Pressure Switch
Body
Indicator light (green): Displays the switch operation status.
3-digit LED: Displays the current pressure condition, set mode
and error code. The display mode can be selected
from four options: fixed green single-color reading,
fixed red single-color reading, green reading inter-
locked with output for switching to red reading, or
red reading interlocked with output for switching to
green reading.
button: Use this button to change the mode or increase
the ON/OFF set value. It also allows you to switch
to the peak value display mode.
button: Use this button to change the mode or decrease
the ON/OFF set value. It also allows you to switch
to the bottom value display mode.
button: Use this button to switch the mode and set the set
value.
Descriptions and functions
Warning
1. Do not attempt to disassemble, modify (including
exchanging the printed circuit boards), or repair the
product.
An injury or failure can result.
2. Do not operate the product beyond the specifications.
Otherwise, a fire, malfunction or switch damage can result.
3. Do not use in an environment where flammable gas
or explosive gas exists.
Usage may cause a fire or explosion. This digital pressure
switch does not have the explosion protected construction.
4. Do not use the product in a place where static
electricity is a problem.
It may result in system failure or malfunction.
Caution
Be sure to perform appropriate functional inspection
and leak inspection after completion of the mainte-
nance and inspection work.
Stop the operation if any trouble, such as malfunction or leak is
found.
If any leak occurs in a part other than the piping, the pressure
sensor may be broken. If this happens, shut down the power and
stop the pressure supply.
Otherwise, an unexpected malfunction may occur and it will be-
come impossible to secure the safety.
Handling precautions
Strictly observe the contents shown below when handling the dig-
ital pressure switch.
Otherwise, the digital pressure switch may be broken or become
faulty, causing a malfunction.
· Do not drop or hit the switch or apply an excessive impact
(100m/s
2
) to it.
· Do not stretch the lead wire strongly or raise the switch by pull-
ing the lead wire. (Tensile strength, 50N or less)
· Do not make any incorrect wiring.
· Do not perform the wiring work with the power turned ON.
· Do not run the wiring in the same route as the power cable or
high-voltage line.
· Ground the FG terminal securely when using a generally avail-
able switching power supply.
· Do not push a setting button with a sharp object.
· Perform the warm-up operation for 20 to 30 min.
A display drift of approx. ±1% occurs immediately after the
power has been turned ON.
· Use a UL certified product that is a class 2 power supply unit in
conformity with UL1310 or a class 2 transformer in conformity
with UL1585 for DC power supply to be combined.
· The digital pressure switch becomes a UL certified product only
when the UL mark is put on the switch body.
349
HAA
HAW
AT
IDF
IDU
IDFA
IDFB
IDH
ID
IDG
IDK
AMG
AFF
AM
AMD
AMH
AME
AMF
ZFC
SF
SFD
LLB
AD
GD
LLB
