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參數資料
| 型號： | MK9151 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Level sensing relay MK 9151 varimeter |
| 中文描述： | 液位控制繼電器旺角9151 varimeter |
| 文件頁數： | 1/2頁 |
| 文件大?。?/td> | 65K |
| 代理商： | MK9151 |
1
Monitoring technique
According to IEC/EN 60 255, DIN VDE 0435-303
3 probe connections for 2-point and 1-point level control
Also for use as moisture detector
High interference resistance of the measuring circuit, which is
isolated from the mains
Max. wire length to the probes: 1500 m
Large setting range: 2 ... 450 k
this permits differentiation between fluid and foam
Adjustable response and release time delay: 0,2 ... 20 s
Programmable for open circuit operation (without bridge)
or closed circuit operation(bridge X1-X2 or X1-COM)
For auxiliary voltages of 24 ... 415 V AC or 24 V DC
Green LED for operation
Yellow LED for contact position
1 or 2 changeover contacts
Also available with sealable transparent cover
Available with safe separation according to IEC/EN 61 140,
IEC/EN 60 947-1
Width 22,5 mm
Level sensing relay MK 9151
varimeter
MK 9151 / 22.04.04 d
Function diagrams
Circuit diagrams
MK 9151.11
MK 9151.12
1-point level control
2-point level control
Approvals and marking
Notes
All commercially available probes are suitable.
The reference probe for level measurement is generally located at the
lowest point of the container and must always be connected to the "COM"
terminal. The container itself can be used as a reference probe if it
consists of conductive material.
1-point level control (see Figure) is especially suitable for protection
against overfilling and dry running on containers with a free inlet/outlet.
In this configuration, all that is required besides the reference probe
"COM" is the "MAX", which must be located at the desired limit level. The
output relay switches over after the set delay time if the fluid level
exceeds or falls below the limit level, which permits fluid to be pumped
out or added.
green LED:
yellow LED:
on, when supply connected
on, when output relay active
Indicators
Application
Level monitoring and control for conductive liquids and powders,
e.g. maximum and minimum filling levels, overfilling and protection
against dry running
Monitoring and control of the mixing ratio of conductive liquids
General resistance monitoring tasks, e.g. limit temperature
detection with PTC
0
All technical data in this list relate to the state at the moment of edition. We reserve the right
for technical improvements and changes at any time.
Level / Niveau
MAX
0
Supply UH
11 - 14
11 - 14
11 - 12
11 - 12
COM
COM
X1
X1
M6620_d
t
t
t
t
t
t
Level / Niveau
MAX
MIN
0
Supply UH
11 - 14
11 - 14
11 - 12
11 - 12
COM
COM
X1
X1
M6621_f
t
t
t
t
t
t
X1 X2
A2
MIN MAX COM
A1
M7659_a
A1 11
MAX
MIN
COM
X1 X2
14
12
A2
11
14
12
X1
COM
A2
MIN MAX
A1
M7660_a
A1 11 21
MAX
MIN
COM
24
22
X1
14
12
A2
11
21
14
24
12
22
Canada / USA
*
* see variants
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