Solar water heater controller SR81Q updated version for SR868C8Q with thermal energy measurement.pump speed control

1, Breifing:

Old SR868C8Q updated version
Temperature measurement accuracy:0.1C
10 push buttons at the front cover.
With separately keypad

2, Features:

Max.number of collectors:1
Max.number of storage tanks:1
Max.number of relays:4
Max.number of sensors:6
Max.number of visualization application system: 1

FRT:1* Rotary vane type electron flow meter
VFS:1*Grundfos flowmeter sensor
Signal port for HE pump: IPWM1

3, Technical datas:

<1>Size of Keypad:120mm x 120mm x 18mm
<2>Size of Controller(1.5KW version): 187mm x128mm x46mm
<3>Size of Controller(3KW version): 218mm x165mm x55mm
<4>Size of Controller(4KW version): 218mm x165mm x55mm
<5>Power supply: AC100-240V,50-60Hz. .  
<6>Power consumption: < 2.5W
<7>Rated impulse voltage: 2.5KV
<8>Housing: Plastic ABS
<9>Protection type: IP41
<10>Mounting: Wall mounting
<11>Operation: 10 push buttons at the front cover.
<12>Accuracy of temperature measuring: ± 0.1oC
<13>Range of collector temperature measuring: -10oC ~220oC
<14>Range of tank temperature measuring: 0oC ~110oC
<15>Suitable power of pump: 3 pump possible to be connected  
<16>Suitable power of HK (backup heating):
1pc<1.5KW
<17>Inputs: 6 sensors,
1pcs*Pt1000 sensor (≤500oC) for collector (silicon cable≤280oC),
5pcs*NTC10K, B3950 sensor (≤ 135oC) for tank, (PVC cable ≤105oC),
<18>1*FRT Rotary vane type electron flow meter
<19>1*VFS: Grundfos flowmeter sensor
<20>Outputs: 4 relays, for circulation pump and backup heating
1*Semiconductor relay, Max.current 1A
2*Electronmagnetic relay, Max.current 2A
1*Electronmagnetic relay, Max.current 2A
1*Potential-free extra-low voltage relay(on/off signal)
1*PWM variable frequency output(switchable 0-10v)
<21>Ambient temperature: -10oC ~ 50oC.
<22>Water proof grade: IP41

4, Main functions:

<1>DATE---Date setting
<2>Timed heat---backup heating
<3>Circle---Hot water circulation
<4>LOAD---Setup Loading tank1
<5>COL---Collector1
<6>PUMP---Pump control mode
<7>COOL---Cooling function
<8>AUX---Auxiliary function
<9>MAN---Manual mode
<10>BLPR---Blocking protection function
<11>OPARR---Parallel relay function
<12>OHQM---Thermal energy measurement
<13>FS--- Flow meter type selection.
<14>UNIT---C-F unit switch
<15>RST---factory setting
<16>PASS--- password set
<17>Holiday function
<18>Screen Protection
<19>Trouble Protection
<20>Trouble Checking

5, Connection

6, Payment

<1> T/T(wire transfer)

<2> L/C at sight

<3> 30% T/T in advance as deposit, the rest paid before shipment

<4> 30% T/T in advance as deposit, the rest paid against B/L copy

7, Certificate

8, Our advantages:

<1> We have 8 senior engineers working on development. that will make us lead the trend whatever on structure or technolgy

<2> 15 QC control the quality, just make sure all is right

<3> Aftersale service is quick, any problem you mentioned will be dealt with in 24 hours!

<4> Our professional salesmen always online for your questions

9, Factory photos:

10, Contact:

Mr Krista Zhang

Position: Sales manager

Phone: 86-573-87090146

Mob: 0086-18857389277

Wechat: Zilansolar

Skype: Krista025

Website: www.zilansolar.com

For more details, pls send email to us, thanks!