Ammeters

Designed to measure AC current, these meters indicate true RMS values and are substantially independent of system waveform.

Voltmeters

Designed to measure voltage, these meters indicate true RMS values and are substantially independent of system waveform

Frequency Meters

Frequency meters use an integral electronic converter and a moving coil indicator. These easy to read meters have accuracy Class 0.5.

MDI (Maximum Demand Indicators)

The thermal/time characteristics of MDI meters monitor the most economic use of cable, fusegear and transformers. The directly heated bimetal element indicates mean RMS current over 8, 15, or 20 minutes, and a red slave pointer shows the highest value reached. The reset knob is wire sealable. Scales are calibrated to match the CT primary plus 20% overload

Combined AC Ammeter and MDI

Where measurement of instantaneous and maximum demand currents are required, these instruments combine both movements in one case. The meter can also replace an existing AC ammeter

Moving Coil DC Ammeters and Voltmeters

Moving coil meters are suitable for all DC systems. The linear scale is calibrated down to zero and the accuracy maintained down to 10%

Process indicators

Meters are used to check process functions locally or remotely at centralised controls. These moving coil instruments offer a wide variety of electrical and mechanical readouts and are operated by transducer, tachogenerator, thermocouple, resistance bulb or other DC analogue signals

Moving Iron AC Ammeters and Voltmeters with Selector Switch

These 96mm and 72mm units offer Class 1.5 true RMS measurement of three-phase AC voltage or current with various switch notation options. The integral selector switch eliminates the necessity for a separate selector switch, saving valuable panel space and providing installation benefits. Both ammeters and voltmeters feature a slide-in dial, scaled for VT or CT values to suit application primary values

Long Scale DIN panel Meters

A range of 48mm, 72mm and 96mm DIN style panel meters measuring all electrical parameters and featuring moving coil movements. All meters incorporate slide-in dials and terminal covers as standard. A range of customized options is available

Hours Run Meters

Elapsed time meters (ETM) or hours-run meters monitor “ON/RUN” time of plant and equipment, allowing the user to effectively control production efficiency

Phase Angle Meters

Phase angle meters indicate the phase displacement between current and voltage. They are used in applications where the phase angle must be monitored, for example with tariffs having VAr penalties, or to optimise generator power delivery

Power Factor Meters

Indicates Power factor of electrical systems

LED Synchroscope

Where manual paralleling of two AC systems is desired, the frequency of both systems can be monitored by an LED synchroscope

Wattmeters

Indicates active power of electrical systems

Varmeters

Indicates reactive power of electrical systems

Surface Mount Panel Meters

Saxon Meters:

A range of 21/2", 31/2" and 41/2" surface mount panel meters utilising pivot and jewel mechanisms and offering IP54 protection. The range includes iron vane and moving coil AC and DC ammeters and voltmeters and frequency meters designed to perform in demanding environments.

Fiesta Panel Indicators:

A robust range of short-scale 31/2" surface mount panel meters offering IP55 protection and featuring a wide view contoured window

Challenger Analogue Panel Meters:

The Challenger range of analogue panel meters offers accurate measurement and indication of most electrical and electronic parameters in industry standard 11/2", 21/2", 31/2" and 41/2" case sizes. This innovative design features a detachable lower fascia plate, which allows the flexibility of either surface or window mounting. The fascia is simply unclipped to achieve the completely flush panel appearance of rear of panel window mounting

Challenger Analogue Panel Meters:

The Challenger range of analogue panel meters offers accurate measurement and indication of most electrical and electronic parameters in industry standard 11/2", 21/2", 31/2" and 41/2" case sizes. This innovative design features a detachable lower fascia plate, which allows the flexibility of either surface or window mounting. The fascia is simply unclipped to achieve the completely flush panel appearance of rear of panel window mounting

Sealed and ruggedized Panel Indicators

The Crompton Instruments 078/080/087 series of heavy duty sealed instruments are designed to comply with the most stringent industrial, marine and military specifications.