14
X-VA-MT3809G-MT3810G-eng/541B182AAG/A/2022-10
Brooks Instrument
Installation Manual MT3809G & MT3810G
Section 1 Introduction
Inductive Alarms
Design Features
• 1 or 2 normally open inductive limit switches
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• For low or high limit signaling/switching
• Front adjustable
• Optional Relay Power Supply – recommended
Description
One or two electronic limit switches can be installed in the indicator
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The limit switch operates as a slot initiator that is inductively actuated
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setting the limit value by sliding the initiator along the indicator scale.
Minimum setting distance between two limit switches is approximately
40% full scale. The position of the initiator also serves to visually indicate
the signaling set value. Settings can be adjusted by removing the indicator
cover, loosening, moving and retightening of the alarm indication needle,
and replacement of the indicator front cover. Refer to Section 2-5-1.
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Power
supply
voltage
5
Ͳ
25
Vdc:
(8
Vdc
nominal)
Impedance
Ͳ
Approximately
1
kohm
with
cam
absent
Ͳ
Approximately
8
kohm
with
cam
present
Ambient
and
process
temperature
See
Temperature
Cut
Ͳ
off
Table
Electrical
Connector
M20
x
1,5
according
to
ISO
(1/2"
NPT,
3/4”
NPT
(F)
or
cable
gland
optional)
•
Brass/Nickel
plated
cable
gland
cable
diameter
range
8
Ͳ
11
mm
(Aluminum
housing)
•
Stainless
steel
cable
gland
cable
diameter
range
7
Ͳ
10.5
mm
(SS
housing)