Features:
- Low Power Consumption
- lithium battery powered transmitter
- LED Display
- With RS485 digital output,easy adapted with wireless module
- Special Anti-condensation design
Typical Application
- Water Treatment Industry
- Groundwater,rivers, lakes
- Ship
- Industrial Process control
Product Overview:
HPM420L low power consumption level transmitter uses high quality stable pressure sensor as the measurement element, it measures the static level pressure accurately which has direct ratio with liquid depth. Then converting the measurement value into standard RS485 signal through the signal conditioning circuit to achieve the measurement of liquid depth. This product has extremely low power consumption and long service life with lithium-ion battery. The product has display, and with RS485 signal output, it can be networked or embedded with wireless module implement wireless transmission.
With long-term aging and stability testing, the product is suitable for harsh outdoor environment and can be widely used for groundwater, rivers, lakes, surface water tanks, and inventory water tanks.
Parameters:
| Range |
| Measurement range |
0~0.5…10mH2O |
| Overload |
1.5 times for Full scale |
Notes:Can also use mH2O,inH2O,m,mm, etc. as unit
Need to highlight the density of liquid to be measured when use length unit such as m,mm etc. |
| Medium |
| Type |
Liquid which applicable with the contact material |
| Output Signal/Power Supply |
| Output Signal/ |
RS485 |
| Power Supply |
Vs=3.1~8 VDC(lithium-ion battery inside ER14250,3.6V 1200mAh)
Vs=5VDC (External power supply)
Vs=24VDC (External power supply) |
| Power Consumption |
| Standby current |
<20uA |
| Date collection cycle |
0~65535s |
| Power Consumption |
About 200uA with date collection cycle as 1s
About 70uA with date collection cycle as 3s
About 50uA with date collection cycle as 5s
...
Note:Longer date collection cycle, lower consumption, |
| Performance |
| Accuracy |
±0.5%FS |
| Long-term stab. |
±0.25%FS/year |
| Environmental |
| Temperature Ambient |
Medium temperature:-40~100ºC
LCD display:-30~70ºC
Storage temperature:-30~70ºC |
| Protection |
IP68(Displacer part)
IP65(Gauge part) |
| Thermal Offset |
| Compensated Temp. |
-10~70ºC |
| Zero point |
±1.5%FS(reference 30ºC,within compensated temperature range) |
| Full scale point |
±1.5%FS(reference 30ºC,within compensated temperature range) |
| Electronic protection |
| Reverse polarity protection |
No damage. Product will not work. |
| EMC |
Compliance EN 61326 |
| Mechanical Stability |
| Vibration |
20g(20~5000Hz) |
| Shock |
20g(11ms) |
| Insulation |
| Insulation resistance |
>100MΩ,500VDC |
| Insulation voltage |
500VAC 50Hz voltage,no breakdown or arc within 1min |
Profiles
Housing aterial
| Part |
Material |
| Displacer part |
304 |
| 316L |
| Pressure sensor |
Silicon Piezoresistive,316L |
| O ring |
FKM(working temperature: -20~200ºC) |
| NBR(working temperature: -40~120ºC) |
| Cable |
PU,external diameter(7.2±0.2)mm |
| NBR,external diameter(7.2±0.2)mm |
| Fluoroplastic cable,external diameter(7.2±0.2)mm |
| Construction of display/gauge part |
Cast aluminum alloy |
Electronic Connection
| Output signal |
Four wires Modbus-RTU/RS485 |
| Definition |
Supply(+V) |
Supply(-V) |
RS485A |
RS485B |
| Battery compartment/ Terminal |
Battery+ |
Battery- |
485A |
485B |
Ordering Guide:
| Code |
Type |
|
| HPM420L |
Low power comsumption Level Transmitter |
| |
Range |
Note |
|
| (0~X)mH2O (Ln) |
X is the measurement range for level
Ln is the length of the cable |
| |
Code |
Output signal |
|
| B7 |
RS485 |
| |
Code |
Material of Cable |
|
| C2N |
NBR/nitrile -butadiene rubber |
| C2U |
PU/polyurethane |
| C2F |
Fluoroplastic cable |
| |
Code |
Top cable fixing |
|
| M30 |
M30×1.5 |
| G12 |
G1/2 |
| F20 |
DN20 Flange |
| |
Code |
Pressure sensor |
|
| M1 |
Silicon Piezoresistive,316L |
| |
Code |
Displacer part |
|
| S4 |
304 |
| S6 |
316L |
| |
Code |
Others |
| VL36 |
3.6V lithium-ion battery(Default) |
| V5 |
5V DC |
| V24 |
24V DC |
| QF |
With factory test report |
| |
Other customized requests |
| HPM420L |
(0~1)mH2O (L2) |
B7 |
C2N |
M30 |
M1 |
S4 |
VL36 |
Other recommendation:
HPM420W(Click):
- Similar profile with current product, while measurement range up to 0~1…100mH2O
- Power supply 24VDC(18`36V), no battery
|
 |
HPM410W-F (Click)
- Level transmitter with flange cage(304 or 316L)
- w/o display; output signal 4~20 mADC , or 0~5VDC, or 1~10VDC
|
|
HPM47W(Click)
- ceramic capacitor pressure sensor, Anti-corrosive
- Over 9 kinds of housing material/Displacer part for choice
|
|
Certification:
FAQ:
1. Q: Are you manufacturer or trading company?
A: We are manufacturer which focuses on sensor for 10 years.
2. Q: What's your quality control system?
A: MC, ISO9001, CE Certificated.
3. Q: What is the warranty of your products?
A: Our warranty time is 18 months after shipment.
4. Q: What is lead time of your product?
A: Normally, our factory lead time is within 10~15 working days for products without customization. You can also check lead time detail with our sales depending on different items.
5. Q: Do you provide customized products?
A: Yes, we can laser mark your logo on products; OEM and ODM customization are welcomed.
6. Q: What is your MOQ?
A: We have no MOQ limit, small quantity order is acceptable.
7. Q: What's the transport?
A: Express such as DHL, FedEx, TNT, UPS for freight prepaid; and we can also use your own courier account to do the freight collect. For more goods we can arrange by air or by Sea.
8. Q: What is your terms of payment ?
A: We could accept T/T, Paypal, WU.
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