WT sensor PCM260H User manual

1 www.wt-tech.com
PCM260H Submersible Level Transmitter
Features
■ Piezoresistive diffused silicon
pressure sensor
■ Probe insertion measurement
method, easy to install
■ For level measurement
■ High precision, all stainless steel
structure
■ Small size, light weight
■ Strong anti-interference, good
long-term stability
■ Vibration and shock resistance
Applications
■ Water level measurement in rivers
and lakes
■ Level measurement of containers
and storage systems
■ Sewage lift pump and pumping
station control
■ Sewage, sediment and flood
drainage system monitoring
Notes:
1. Do not touch the diaphragm with
hard objects, which may cause
damage to the diaphragm.
2. Please read the Instruction Manual of
the product carefully before
installation and check the relevant
information of the product.
3. Strictly follow the wiring method for
wiring, otherwise it may cause
product damage or other potential
faults.
4. Misuse of the product may cause
danger or personal injury.
Product overview
PCM260H Submersible Level Transmitter accurately measures
static pressure of the liquid proportional to the level depth using
high performance piezoresistive diffused silicon pressure
sensor as the measuring element. The result is converted to
standard current signal output through signal conditioning
circuit, establishing the linear corresponding relation between
the output signal and liquid depth to complete the
measurement of the liquid depth. The product has advantages
of high precision and small volume. Submerse it directly into
liquid, the height between the end of the transmitter to the liquid
surface is measured easily. The product is applicable to the
measurement and control of the liquid level in the petroleum,
chemical industry, power plant, urban water supply and
hydrological exploration fields.
PCM260H has passed long-term aging and stability screening
with stable and reliable performance and can be used in harsh
outdoor environment.
Notes:
1. Do not misuse documentation.
2. The information presented in this product sheet is for reference
only. Do not use this document as a product installation guide.
3. Complete installation, operation, and maintenance information
is provided in the instructions of the product.
4. Misuse of the product may cause danger or personal injury.

2 www.wt-tech.com
Performance parameters
Pressure range
0～1mH2O…20mH2O
Pressure reference
Gauge pressure
Accuracy
±0.5%FS（@25℃）
Supply
9～30V
Output
4～20mA
Temp. drift
35kPa：±3%FS(@0～60℃）
Others：±1.5%FS(@-10～70℃）
Response time
≤100ms（Up to 90%FS）
Overpressure
Refer to “Pressure range selection”
Service life
≥106pressure cycles
Operating temp.
-20℃～70℃
Medium temp.
-10℃～70℃
Storage temp.
-40℃～70℃
EMC
EN61000-6-2, EN61000-4-3
Insulation resistance
≥100MΩ/250VDC
Vibration resistance
Sine curve：20g, 25Hz～2kHz；IEC 60068-2-6
Random：7.5g, 5Hz～1kHz；IEC 60068-2-64
Shock resistance
Shock：200g/1ms；IEC 60068-2-27
Free fall：1m；IEC 60068-2-32
Protection
IP68
Surge
300V
Static
IEC 61000-4-2 Level 3
Medium compatibility
All kinds of media compatible with stainless steel 304
(Protective cap material: PC+ABS)

3 www.wt-tech.com
Outline structure & Electrical connection
Code
J1: 2088 housing
J2: 2088 housing with
display
J3: Cable outlet
Dimension
In mm
Wiring
method
Current output
Red wire：Supply+
Blue wire or yellow wire：
Current output
Pressure range selection
Sensor
pressure
range
Applicable
pressure range
Pressure
range code
Overpressure
Burst
pressure
Remark
35kPa
1mH2O＜X≤4mH2O
35kG
300％FS
600％FS
100kPa
4mH2O＜X≤10mH2O
100kG
200％FS
500％FS
250kPa
10mH2O＜
X≤20mH2O
250kG
200％FS
500％FS
Note：G stands for gauge pressure
X stands for the pressure range needed
With
display
Junction
box
Junction
box

4 www.wt-tech.com
How to order
PCM260H - 35k G B1 J3
Example：PCM260H-35kGB1J3
Refer to product model PCM260H, with pressure range 0～3mH2O, pressure reference gauge pressure,
output signal 4~20mA, electrical connection cable outlet.
Ordering tips:
1. Please pay attention to the medium compatibility which has a direct contact with the product when
selecting the type. The default material of the product is 304 (The protective cap material of level
probe is PC+ABS).
2. Cable length isn’t mentioned in the selection guide, but it will be indicated in production sheet.
There are two kinds of cable material: PUR and PVC. The wire diameter is 7.2±0.2mm. Special
cable can be customized.
3. The diaphragm should not be touched by foreign material. It is recommended to install a protective
board inside the pressure port.
4. The default cable length of PCM260H is 2 meters. If longer cable is needed, there will be extra
charge.
5. If the product needs to be used in lightning prone area, please choose lightning protection
submersible level transmitter.
6. The air vent should be open to the atmosphere and there should be no water. Please make sure
the outlet is waterproof and moistureproof when using the product.
7. If the pressure range needed is larger than 20m, it can be customized.
8. If the submersible level transmitter needed is made of 316L, please choose PCM1260 submersible
level transmitter.
Contact us
Nanjing Wotian Technology Co.,Ltd.
Website: www.wtsensor.com
Add: 5 Wenying Road, Binjiang Development Zone, Nanjing, 211161, China
G = Gauge pressure
B1: 4~20mA
Product model
Refer to “Pressure
range selection”
J1: 2088 housing
J2: 2088 housing with
display
J3: Cable outlet