130 series products are combined heat meter. The radial impeller flow sensor, which with power supplied by inside lithium battery, is adopted in series products, which not only fit to apply in networking but also fit to apply in independence environment. The distance between the calculator and flow meter should be not more
than 10m. The delivery standard length is 1.5m .The wire of temperature sensor is maximum length with 25m and the delivery standard length is 1.5m.The series products with better capability of against magnetism disturbing.

Main parameter and technical data

Basic parameter
Environment class CJ128-2000 A ，relative humanity ＜80%RH
Blanket protection grade IP52
Products standard Q/(QY) BCKJ 4-2006
Energy measuring
accuracy Class 3
Products structure Combined meter

Display
Type and contents                   display LCD，8 digits
Unit                                             kWh - kW - m3/h - m3 -℃
Max-reading                              999999.99
Corresponding display           content Energy–power– flow– temperature

Temperature input
Temp. sensor type                   PT 1000-two wire
Temp. resolution                      0.1℃
Temp. measuring range         0℃ ～ 100℃
Measuring range for                temp.difference 3K ～ 60K
Temp.difference start              measuring DN20～DN40 = 1.0K, DN50～DN200 = 0.7K
Temp. upper-limit of cooling measuring Delivery default value：15℃
Temp. lower limit of heat measuring Delivery default value：40℃

Flow meter
Structure format                        Radial impeller flow meter
Operating pressure                  ≤1.6MPa
Working current                         ≤100uA
Pressure lose                            ≤10kPa

Network interface
Network serial interface           M-BUS
Communication protocol         BASIC enterprise standard or CJ/T188-Network 2004
Communication rate 2400bps

Other interface
Chain measuring input            Contact without pressure
Arrearage cut-off output            DC 3V/3mA（should be assorted with BASIC’s MDU-003 to
operate）

Power
External power supply               M-BUS DC 21V～33V, working current＜1.5mA
Inside lithium battery 1              AA specification 3.6V/2AH
Inside lithium battery 2              C specification 3.6V/7.5AH
Static working current                ≤25uA

Energy measuring
Time-segment measuring       Yes （delivery setting: no time -segment function）
Number of timesegment           4
Quantity recorded for time- segment measuring: 4 independence time-segments energy value
Mode for weekend time-segments 1 time-segment, Saturday, Sunday，4 modes to choose
Mode for working time time-segments 3 time-segments，Monday ～ Friday ，arbitrary setup to
be set within 24 hours everyday