Hand held weight meter recognizes sensor

Portable meter uses stored values to adjust calibration data to the sensor interrogated, on any 4-wire sensor

Imagine being able to connect load cells, pressure transducers or any other 4 wire mV/V sensors to a hand held instrument and know that the instrument is calibrated to the sensor with no further action on the part of the user! The HH4-WT hand held meter, manufactured by Amalgamated Instrument Co, offers just such a feature.

Calibration information for each sensor is stored in a special memory chip within the sensor plug.

These stored calibration values automatically override any internally stored calibration data when the sensor is connected to the HH4-WT.

This allows the one hand-held instrument to be used to take calibrated measurements from many sensors.

There are many applications that require periodic, but not constant, measurement of load or pressure.

Examples include the monitoring of the load on the hook of a crane when used with a tension load cell, the periodic recording of water levels in a dam or in a mobile weighbridge.

The HH4-WT can be taken on site, a sensor can be plugged in and readings taken in the knowledge that the meter is calibrated to the sensor.

The instrument can store 3 sets of calibration data as well as offering the unique calibration recognition feature.

Calibration is set up using the pushbuttons on the instrument.

The alternate internal calibrations could be used to allow the display to be scaled to differing process units for the same sensor e.g Kg or lbs.

Other HH4-WT features include a programmable "USER" button, RS232 serial communications as standard and a selectable sample rate up to 100 samples per second.

The "USER" button can, for example, be programmed for peak hold, tare or to access the alternate calibrations.

The HH4-WT is powered by a single 9V battery.

An automatic "switch off" function is provided to switch the instrument off after a programmable preset time period thereby prolonging battery life.

The AIC HH4-WT with its flexibility, range and intelligence coupled with the wide range of sensors carried by AIC offers solutions to applications needing handheld metering of a wide range of sensors.

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