Microsensor MPM489WZ1 Bedienungsanleitung
V1.0
MPM489WZ1
Operation Manual
Thank you very much for selecting Micro Sensor’s product, please
carefully read this operation manual before using the product.
1 Introduction
MPM489WZ1 is a Φ19mm diameter fully sealed submersible level
transmitter based on diffused-silicone principle. It consists of a high
stable and reliable piezoresistive pressure sensing element and the
special PCB component as well as the stainless steel housing. Its
integrated construction and standardized signal output greatly facilitate
the operation and automation control at work sites. The special vented
cable being hermetically connected with the transmitter housing allows
the transmitter for long term use in the liquids that are compatible with
the transmitter construction material.
The protection class of MPM489WZ1 Level Transmitter is IP68.
For easier local installation and observation at work site, the connection
box and indicator are available according to customers’ option.
Product measurement tools type approval No. 15F139-61.
2 Features
MPM489WZ1 Level Transmitter has advantages featuring compact size,
light weight and good long-term stability without need of adjustment. It
2
can be widely used for liquid level measurement and control in fields of
petroleum, chemi-industry, medicine, metallurgy, power station, mining,
urban water supply, drainage and hydrology survey, etc.
3 Specification
Pressure Range: 10m, 20m, 50m, 100m,200mH2O
Overpressure: 1.5 times FS
Accuracy: ±0.5%FS
Stability: Range＞20mH2O，±0.2％FS/year
Range≤20mH2O，20mmH2O
Operation temp.: -10℃~70℃
Storage Temp.: -20℃~85℃
Power Supply: 11V~28V DC
Output Signal: 4mA~20mA DC（two wire）
Load (Ω): ≤ (U-11)/0.02（Ω）
Insulated Resistance: 500VDC，20MΩ
4 Construction Material
Housing: 1Cr18Ni9Ti Cap: Black Nylon
O- ring: Viton Rubber casing: Chloroprene Rubber
Cable: Φ7.5mm PE cable with vented tube Diaphragm: SS 316L
Connection Box: Cast aluminium (ZL102)/ PBT
5 Outline Dimension of transmitter
5.1 The outline dimension is showed as Figure 1:(unit:mm)
3
Cable length: the maximum length is 300m.
Figure 1
5.2 Connection Box Dimension(see Figure 2).
Connection box ：Please note it in the order if the connection box is
required.
Indicator: Connection box Ye is available with the indicator upon the
customer request.
Mounting hole 2-M6
Depth 10
～1 4 0
Φ7 2
10 3
4 0
Φ8 4
Mounting hole 2-M6
Depth 10
～1 4 0
Φ8 0
Φ8 4
4 0
45
Connection box Yb Connection box Ye
4
54
12
SW27
10
17
108
85
85
118
35
72
38
16
Connection box Yc
Figure2
6 Electrical Connection
6.1 Wiring
6.2 Electrical connection for 4mA~20mA DC output transmitter
6.3 Electrical connection for transmitter with connection box:
Wire Color
Definition
Black
+V
Red
0V/+OUT
5
There is a terminal connection board inside the transmitter connection
box, and their definition is indicated below.
6.4 Notes
a) There is a plastic tube in the transmitter special cable; the back
pressure cavity of gauge sensor is connected to atmosphere by this
tube. In the process of installation and operation, be sure to keep the
reference tube be well connected with the atmosphere. Mud or sand
should not be jammed into the reference tube. Be sure no water or
other liquid flows into the reference tube and damages the
transmitter.
b) If the product is installed in the thunderstorm area, the
Lightning-proof Protection Device is suggested to protect transmitter.
7 Unpacking, Enclosed Shipment and Storage
7.1 Unpacking
+V
OV/+OUT
red black
6
Attention:
a) Check and make sure the package in good condition and the box
should be put as the sign “up”.
b) Striking the package violently is forbidden to avoid damages to
instruments or accessory. Please be sure the cable casing and
rubber sheath are well protected.
7.2 Enclosed Shipment
When delivery, the transmitter includes:
MPM489WZ1 Level Transmitter 1
PE Cable(connected with transmitter) the ordered length
Connection Box（connected with cable）comply with the order
Indicator（in connection box Ye）comply with the order
Product Operation Manual 1
Product Quality Certificate 1
7.3 Storage
The transmitter should be stored in dry and ventilated room with ambient
temperature -20℃~85℃，relative humidity no more than 85% and the air
in the room without corrosive gas.
8 Installation
8.1 Inspection before Installation
Notes:
7
a) Whether the static pressure produced by the liquid at installation
place exceeds the transmitter FS or not.
b) Whether the measuring liquid is compatible with the transmitter
construction material or not.
c) Whether the measuring liquid can jam the holes on the protection
cap or not.
8.2 Installation Methods
The transmitter should be installed vertically down.
In the flowing water, the acted surface should be parallel with the water
flowing direction.
8.2.1 Installation in the Static Water
The installation method in the static water see Figure 3.
To prevent shaking or destroying the transmitter when pumping, the
transmitter should be put away from the liquid resource. Otherwise it
should be installed as Figure 4, protected by steel tube.
The installation method in the deep well see Figure 4.
Steel tube inserted method is usually used. The steel tube cannot be
bent; the inner diameter of steel tube must be more than 30mm. Several
holes should be made at different heights on the tube so as to easily
raising and make water flow smoothly. If necessary, wrap steel wire
around transmitter to prevent breaking the cable by lifting with the steel
wire.
8
Figure 3 Figure 4
8.2.2 Installation in Flowing Water (e.g. river channel, reservoir area,
etc.)
The water-calming equipment are required.
Method one: Insert a steel tube in the water channel (see Figure 5).
The steel tube wall should be thicker, and several holes should be made
at different heights on the tube to damp waves and clear the water
pressure influence.
Method two: Superficial burying is better in the sand and stone channel
(see Figure 6).
Figure 5 Figure 6
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