M850-LCD Multifunction Digital Power Meter


Contact us at sales@hoytmeter.com for availability.

M850-LCD MultiPower is a low cost 96x96mm metering system for AC applications.
It measures line Voltages and Currents, Neutral Current, System Frequency, System W, A and VA Demands, System W, A and VA Maximum Demands, System Active Power, System Reactive Power, System Apparent Power, System Active Energy, System Reactive Energy and System Power Factor.
● Complete 1-phase and 3-phase digital universal metering system.
● Measures a standard range of 19 different parameters.
● THD option for Current and Voltage.
● Four easy to access front control buttons to scroll up or down through the parameters.
● Unique LCD FSTN display with customer selectable back lighting with user-selectable color options of blue, green or white.
● MODBUS RTU and BACnet MS/TP communications protocols for use with PC, PLC, RTU, Data Loggers and SCADA programs.
● Communicate with up to 32 other meters or controllers on 2-wire bus.
● UL listed.
● Non-volatile eeprom memory retains all current ratios, demand time periods, and calibration data in power down (power loss) conditions  Auxiliary power supply is a universal supply for both AC and DC volts.
● Fast response times: Display, less than 50ms; RS485 (Modbus), less than 10ms.
● Free software for monitoring and logging.
● Plug-in communications modules for RS485 (Modbus) and pulsed output.

Contact us at sales@hoytmeter.com for availability.


System types
Single Phase: 3-Phase 3-Wire Unbalanced.
Single Phase 3-Wire: 3-Phase 4-Wire Balanced.
3-Phase 3-Wire Balanced: 3-Phase 4-Wire Unbalanced.

Digit Size: 6mm, 7 segment LCD.
Screen Size 14.2mm high.
Backlight Blue, Green, White (User-selectable).
Update Time: 1 second.
Energy: 1 line 99999999.

Voltage: 28V to 347VAC (L-N), 48V to 600VAC (L-L).
Overload: 800VAC continuous.
Burden: 0.5VA per phase.
Current Input: Via CT: 5A; 1A,AC | CT Option: 0.5 to 6A,AC; 0.1 to 1.2A.
Input Overload: 10 x In for 1 sec..
Input Burden: 0.5VA per phase.
Frequency: 45-65Hz (Optional 360-440Hz).
Input Working Range: V&I from 1.7% to 100%.

Volts/Amps: 0.5% of reading ± 2 digits.
Frequency: 0.1Hz ± 1 digit.
Active Power / Reactive Power / Apparent Power: 1% of reading ± 2 digits.
Power Factor: 1% of range.
Energy: IEC 1036, Class I.

Auxiliary Voltage
100 to 440VAC; 100 to 420VDC (Optional 19 to 69VDC).
45-65Hz, Burden <10VA.

Communications: RS485 MODBUS Protocol.
Pulsed Output: W.h, VAr.h.

Temperature Working/Storage: -4F to +158F (-20C to +70C) /-22F to +176F (-30C to +80C).
Relative Humidity 0-95% non-condensing.
Shock 30G in 2 planes.

Extra Information

Made in UK
Meter Approvals
UL Listed
Length (inch)
Width (inch)
Height (inch)
Digital Meter Type
Digital Power Meter