This series of intelligent digital display power meter is a high-precision meter developed for power measurement and display in power grid and automatic control system. It has the advantages of intuitive display, high precision, good stability and strong vibration resistance. CPU digital processing, AC true RMS measurement, CT (PT) can be set through the panel keys. Optional: 1 relay control output, can be set to: upper limit; lower limit; upper and lower limit, 2 digital output, RS485 communication interface, using standard Modbus-RTU protocol, can be directly connected with industrial configuration software, easy to group network, 3. All the way analog output.

1. key definition
Function key SET: It is used to enter the menu, and it is the confirmation key in programming mode.
Shift key: Cycle through the nixie tubes in the selected page, and the selected nixie tubes are flashing.
Increase key ▲: Enter the setting value, change the value of the flashing digital tube (the numbers cycle from 0 to 9).

2. Operation method
Use the menu key SET to select the setting page, use the increase key ▲ to enter the setting value setting, use the shift key and the increase key ▲ to change the digital tube value on the page, adjust to the desired value and press the function key SET to confirm and exit the programming state.

1. Single-phase and three-phase can be set through the panel buttons
2. Display range: C0.000～1.000～L0.000
3. Software adjustment, no internal potentiometer, high precision
4. Optional with communication function. (must be specified when ordering)
5. Optional with upper and lower limit alarm control function


1. Press and hold the SET button for 6 seconds to enter the menu, the r-H (for setting direct reading parameters) mark appears, and then press SET again to enter the set value (0005), this value is the displayed value (ie the base value), this You can use the up key “△” to change the large value, and you can also use the down key “▽” to change the small value. Press the SET key again to display the r-K (set magnification) mark, and press SET again to enter the set value (0001). At this time, you can use the up key “△” to change the large value, and you can also use the down key “▽” to change the small value.
Note: If it is a simple function, after completing the operation through the above keys, press the SET key continuously to exit.

2. If you want additional functions, you can continue to complete the operation through the following keys:
Press the SET key again to display the Addr (communication address) sign, and press SET again to enter the set value (0001). At this time, you can use the up key “△” to change the large value, or use the down key “▽” to change the decimal value. Press the SET key again to display the BAUD (baud rate) mark, and press SET again to enter the set value (9600). At this time, you can use the up key “△” to change the large value, or use the down key “▽” to change the decimal value . Press the SET button again to display the ALHL (alarm) sign, press SET again to enter the upper limit alarm setting (AH-Y), if you want to set the lower limit alarm, you can press the up button “△” again to enter the lower limit alarm setting (AL-Y) ), then press SET to display the (ALN) sign, then press SET again to enter the alarm value setting menu (2000). At this time, you can use the up key “△” to change the larger value, or press the down key “▽” Change the decimal value.


1. Before use, the meter needs to be powered on for 15 minutes.
2. Pay attention to prevent vibration and impact, and do not use it in places with excess dust and excess harmful gases.
3. The input wire should not be too long. If the input end of the signal under test is long, please use a twisted pair shielded wire.
4. If the signal is accompanied by high frequency interference, a low frequency filter should be used in the line.
5. When not in use for a long time, please turn on the power for no less than 4 hours every three months.
6. Long-term storage should avoid direct light, and should be stored at -10℃~70℃.
7. If there is no display on the meter, first check the auxiliary power supply to see if the voltage is within the specified range.
8. If the display is abnormal, check whether the input signal is normal and whether the signal terminals are tightened.
9. Unless the PT has enough power, the PT signal cannot be used as an auxiliary power supply at the same time to ensure the normal operation of the instrument.
10. The screws of the current terminals in the CT circuit must be tightened to ensure reliable contact between the incoming and outgoing wires to avoid malfunctions.
11. To calibrate the instrument, the calibration instrument should be better than level 0.1 to ensure the calibration accuracy.

product name	product model	basic function		remarks
Three-phase active power meter	CHTK900P-2Kl		Three-phase active power A row of LED digital tubes shows the display True effective value measurement, the whole four-digit display Optional band with communication function, optional band The analog volume outputs either DC4-20mA or 0-20mA, Alarm output. Protable table arbitrary through panel buttons Adjust the display value 1~9999, software Adjustment, high precision, long-term work without adjustment.	Open hole is 111mm * 111mm
	CHTK900P-9Kl			Open hole is 91mm * 91mm
	CHTK900P-1Kl			Open hole is 152mm * 76mm
	CHTK900P-4Kl			Open hole is 115mm * 56mm
	CHTK900P-5Kl			Open hole is 91mm * 45mm
three phase varmeter	CHTK900Q-2Kl		Three-phase reactive power A row of LED digital tubes shows the display True effective value measurement, the whole four-digit display Optional band with communication function, optional band The analog volume outputs either DC4-20mA or 0-20mA, Alarm output. Protable table arbitrary through panel buttons Adjust the display value 1~9999, software Adjustment, high precision, long-term work without adjustment.	Open hole is 111mm * 111mm
	CHTK900Q-9Kl			Open hole is 91mm * 91mm
	CHTK900Q-1Kl			Open hole is 152mm * 76mm
	CHTK900Q-4Kl			Open hole is 115mm * 56mm
	CHTK900Q-5Kl			Open hole is 91mm * 45mm
product name	Product model	basic function		remarks
Single-type three-phase power factor table	CHTK900H-2Kl		A row of LE D digital tubes is on display Single and three-phase phases can be set through the panel buttons Display range: C0.000~1.000~LO.000 Software tuning, internal no potentiometer, high accuracy is optional with communication function.(Should be indicated when ordering) with optional upper and lower limit alarm control function	Open hole is 111mm * 111mm
	CHTK900H-9Kl			Open hole is 91mm * 91mm
	CHTK900H-3Kl			Open hole is 76mm * 76mm
	CHTK900H-AK1			Open hole is 68mm * 68mm
	CHTK900H-5Kl			Open hole is 91mm * 45mm
	CHTK900H-1Kl			Open hole is 151mm * 71mm
	CHTK900H-4Kl			Open hole is 115mm * 56mm
Frequency Table CHTK900F tachometer CHTK900N Pressure gauge: CHTK900N Weight gauge: CHTK900N Special table et al. CHTK900N	CHTK900F(N)-2Kl		A row of LED digital tubes shows that, Various input signals, For example, there are: DC4-20MA, DC0-20MA,DC10V,DC75MV So on programmable through the panel button Any adjustment display value 1~9999, The whole four-display, optional belt up and down Limited alarm control function, optional with variable transmission Output, optional with communication function.	Open hole is 111mm * 111mm
	CHTK900F(N)-9Kl			Open hole is 91mm * 91mm
	CHTK900F(N)-3Kl			Open hole is 76mm * 76mm
	CHTK900F(N)-AK1			Open hole is 68mm * 68mm
	CHTK900F(N)-5Kl			Open hole is 91mm * 45mm
	CHTK900F(N)-1Kl			Open hole is 151mm * 71mm
	CHTK900F(N)-4Kl			Open hole is 115mm * 56mm
	CHTK900F(N)-DK1			Open hole is 45mm * 45mm