Hydraulic Electric Water Pump Controller

• Task: Program
• Structure: Closed-Loop
• Mathematical Model: Linear
• Signal: Continuous
• Function: Automatic Control
• Certification: ISO: 9001, CE
• Model NO.: L921-B
• Condition: New
• Customized: Non-Customized
• Material: Plastic
• Protection Grade: IP54
• Rated Input Voltage: AC220/50Hz
• Rated Output Power: 0.37kw~2.2kw
• Switch Type: Auto / Manual
• Phase Nummber: Single Phase
• Transport Package: Carton
• Specification: CE, ISO9001: 2008
• Trademark: Leading
• Origin: Changsha, Hunan
• HS Code: 90328990
• Production Capacity: 5000PCS/Year

Product Description

Water pump controller

Application	Control & protect booster pump only
Model	L921-B
Main technical data
.Start type	Direct on line
. Qty of controlled pump	Single pump
. Rated input voltage:	AC220V-240V Single phase 50HZ/ 60HZ
. Rated output power:	0.37kw-2.2kw (0.5hp-3hp) 3-4kw(4-5.5hp)
Protection function	Over load protection Pump stalled protection Dry run protection Under voltage protection Over voltage protection Repeat start protection
Control characteristic	Connecting 0.5-4.5V pressure transmitter to replace pressure switch Pump start and stop according to different pressure value setting
Other features	LCD screen displaying dynamic real time pressure value Pump start and stop pressure value can be easily setting on the LCD screen Pump accumulative running time recording Pump last five faults record displaying Presenting one dry contact point (BA port) Present RS485 port Present user remote monitor LCD screen locked function under Auto state Push button calibration
Main installation data
Working temperature Working humidity Degree of protection Install position Unit dimension (L x W x H)	-25ºC-- +55ºC 20%--90%RH, no drips concreted IP54 Wall mounting 310 x 220x 120mm

Main spec:
Rated Input Voltage: AC220V/50HZ, Single Phase
Rated Output Power: 0.37kw-2.2kw

Application:
Control&Protect single phase pump, DOL

Main features:
1. Single pumps control;
2. Present pressure transmitter with 0.5-4.5V analog signal;
3. Easily setting the different pressure value and observing the dynamic pressure value;
4. Eliminates the pressure switch, pressure setting for one pump;
5. Automatically stop the pump in the case of water stortage, protecting it from drying
Running without installing the float switch or liquid probe in the wall;
6. Auto/Manual switch;
7. Pump accumulative running time displaying;
8. Pump last five fault record displaying;
9. LCD displays pump running information;
10. Protect the pump against many faults;
11. Grade of protection IP54;
12. Present remote monitor;
13. Present one dry contact point;
14. Visual & Audio alarm for fault prompt.

Advantages:
1. Water pump network remote monitor;
2. Water pump GSM message remote monitor;
3. Central group control network systems;
4. Intelligent digital water pump controller with sensor free;
5. Computer chip of intelligent digital water pump control;
6. Water pump intelligent one button fast parameter calibration;
7. Water control anti-corrosion, enviromment-friendly probe;
8. Water pump shaft anti-rust function;
9. Liquid level no sensor application;
10. Win credit grade-AAA enterprise certification;
11. Win Hunan good quality and be reliable enterprise;
12. The appointed product of Hunan flood control and drought relief command office.

About us:
Hunan Leading Science & Technology Development Co., Ltd is the professional manufacturer of intelligent pump control system applied for monitoring and protecting of pumps in home and industry use;

Leading Science & Technology has always been a leader in the production, research & development of intelligent pump control system and relative pump control products. Million of our prime products have been sold on the market for stable quality and reasonable price.

Leading Science & Technology has established stable relations with many pump producers and distributors from China and overseas.
Till now, Leading Science & Technology we have passed CE, ISO9001: 2008 certificate.