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Power meter for engine / motor testbeds


This versatile, high precision power measuring display takes two digital signals (RS485) from our INT4-L Torque and INT4-C RPM meters and computes kW, HP or BHP with extremely high precision.

It can provide serial data out to your data acquisition system and can be combined with our INT4-P Pressure and temperature displays so you can measure, display and record any important physical variable.

Ideal for internal combustion, electric, renewable and stored-energy motors.

The versatile INT4-L load cell / weighing digital panel meter




Dimensions...

INT Series Digital panel meter dimensions




INT4-HP Specifications
Input connectionsDetachable screw terminals
Input SignalsRS485 from our Torque and RPM displays. Torque can be expressed in Nm or ft/lbs. Power can be displayed as kW or HP or BHP
Last digit Round-upSelectable 1,2,5,10,20,50
Front panel controlsCalibration, Tare, Reset, Max/Min, Alarms
Power100-240 VAC std, 11-30VDC option. 10VA Power burden, max.
AccuracyDependent on the accuracy of the torque measurement.
Analogue outputOptional plug-in 16 bit module
Linearity +/- 0.02% of range

0-20/4-20mA into 0 to 500 Ohms
Resolution 0.4uA
0-10V into loads >600 Ohms
Resolution 0.2mV
-10 to+10V into loads >600 Ohms
Resolution 0.4mV

Accuracy 0.1%of range
Stability 50ppm/C

Fully isolated from input and power
Fully scalable with digital precision

Special features
Forward and reverse action possible
Can be set to operate from nett or gross value.
Alarm outputOptional plug-in relay SPST modules
2 Alarms rated 2A 250VAC, SPST
4 Alarms rated 2A 250VAC, SPST
Selectable normally open or normally closed

Optional plug-in relay SPDT modules
2 Alarms rated 2A 250VAC, SPDT

Optional plug-in solid state modules
2 Alarms rated 50V 100mA DC.

Adjustable hysteresis
In-flight compensation facility.
Energise or de-energise on trip

Special features
Adjustable timers to set energise and de-energise delays. Can also be set to pulse for applications needing less than 100% duty cycle.
In-band and out-of-band alarm function.
Serial data outputOptional plug-in modules.
RS232
RS485 Addressable
On demand or continuous output.

Special features
Can include time and date with RTC option fitted.
Digits6 digits, 14mm high. 7 metres max. viewing distance. 10 readings per second. Variable brightness from front panel.
Digit colourRed - standard. Green - optional
Logic inputs3 logic inputs, individually configurable for Hold, Reset, Tare, Peak/valley, Nett/Gross, Memory Address

Normally open, NPN or contact closure input to activate.

5V open circuit, 1mA switched current.
EnvironmentalStorage -20 to +70C
Operating 0 to 50C
Non condensing.
Optional IP67 cover SPC4
SealingIP65 standard, IP67 with optional SPC4 cover







30 years of digital panel meter and large digital display design, manufacture and export

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