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  Instrumentation
DC Watt Meter for small applications
INS-PWM

This simple DC Watt Meter measures current, voltage and time and from those measurements calculates peak current (Amps), peak power (Watts), minimum voltage (Volts), power (Watts), energy (Watt-hours) and charge (Amp-hours) values, in real-time.

Features:

  • Voltage - 4-60V
  • Current - 0-100A peak, 50A continuous
  • Power - 0-6554 W
  • Charge - 0-65 Ah
  • Energy - 0-6554 Wh
  • Operation Current - 7 mA
  • Dimensions - 84 x 50 x 20mm, 132g
  • Operating conditions - 0-50C
  • User Manual
Cycle Analyst Large Screen High Current
INS-CA-LHC Voltage Range - 10 - 150VDC (Current shunt required)
INS-CA-LHC-HV Voltage Range - 15 - 350VDC (Current shunt required)
INS-CA-LSA Voltage Range - 10 - 150VDC (shunt included)

EV Power stocks the Cycle Analyst range of battery power monitors. Originally designed for electric bicycles these meters have found use in a wide variety of applications including electric vehicles.

Suitable for almost any application where batteries are used this meter provides comprehensive information about the state of charge on a large LCD screen. Once connected to the vehicle’s power bus, the Cycle Analyst calculates and shows the following information:

  • Volts, Watts, Amps: The instantaneous electric power being drawn from the battery.
  • Amp-Hours, Watt Hours: The net energy that has been pulled from the pack since the meter was reset. The accumulated amp-hours let you know the remaining energy in the battery pack with far greater accuracy than a voltage or LED indicator.
  • Speed, Distance, Time: All of the basic features of a bicycle computer, including the average and maximum trip speeds, plus a total distance odometer.
  • Regen, Wh/km: There are several quantities this meter will calculate that you don’t get with other instrumentation, such as the % extra range that was gained from regenerative braking, as well as the vehicle’s average energy use in Watt-hours per kilometer or mile.
  • Peak Currents and Voltage Sag: Records the maximum forwards and regenerative currents as well as the minimum voltage on the battery pack.
  • Total Battery Cycles and Amp-Hours: Retains life cycle information on the vehicle’s battery pack, such as how many charge and discharge cycles the pack has experienced and the total amp-hours that were delivered over its entire life.

The CA-LSA (large screen, standalone) has an integrated shunt for measuring current, no extras required. CA-LHC and LHC-HV require an external shunt connected between the negative battery terminal and the load.

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