SCIENTIFIC LABORATORY SUPPLIES LTD
WILFORD INDUSTRIAL ESTATE
Tel: 0115 982 1111
Fax: 0115 982 5275
Before switching on ensure that the dial reads zero.
Switch the instrument on using the ON/OFF switch. If more than one decimal
point appears in the red digital display it is an indication that the battery pack
needs recharging. If there is no reading please contact our Nottingham Sales
Office for technical advice.
The battery pack may be charged using only the specified charger. It is preset
to charge at the 16 hour rate but if charging is continued beyond the 16 hours
no serious harm will be done to the batteries, but frequent or gross
overcharging can reduce battery life.
Lift the battery pack out of the Neurothesiometer case to the limit of its
connecting wire. Unplug the connecting wire.
If a second fully charged pack is available, plug the connecting wire into the
smaller diameter coaxial socket of the spare battery pack and insert the pack
into the case.
Apply the vibrator to the patient at the chosen site on the body and allow
the vibrator head to rest in contact with the site under its own weight.
Turn up the output very slowly until the patient just senses the vibration.
Press ADVANCE MEMORY which records this value in the memory and
moves on to the second memory position. Return the output control to
zero before making the next measurement. Make as many readings
as required, at different test sites, up to the maximum memory number 10.
To review the measurements taken, switch the REVIEW/STORE switch to
REVIEW; this automatically resets the memory to Position 1. The set of
readings taken will now be individually displayed, corresponding to each
successive memory number, as the ADVANCE MEMORY switch is
Switch off the instrument.
Recharging the battery pack in-situ in the instrument (referred to in some
leaflets) has been discontinued for safety reasons.
Making a Measurement
If the patient has normal sensitivity, it is probable that the EXPANDED range
will be preferred. This gives a full scale reading of 0 - 25 volts (0 - 62.5
microns). The NORMAL range extends from 0 - 50 volts (0 - 250 microns).
Switch the REVIEW/STORE switch to RECORD; this operation automatically
returns the memory to Position 1 (green display). Select whether or not you
wish to read out in VOLTS or MICRONS (micrometers).
NOTE: The readings in volts will correlate closely with those from
biothesiometers. The readings in microns will not correlate with the
calibration curves of biothesiometers, but are accurate free air
movement readings at the tip of the vibration head. Because the
circuitry of the Neurothesiometer contains a power feedback circuit,
the free air movement is little different from the movement in contact
with the skin.
Apart from keeping the battery packs charged and ready for use, the only
user maintenance required is to keep the instrument clean. This may be
done by use of a cloth dampened with a mild detergent solution.
This cloth should be lightly wiped over dirty surfaces but care should be
taken to avoid the risk of moisture penetrating the instrument.
Should the instrument require repair for any reason it should be returned
to us as its calibration requires the use of specialised instruments not
available in normal electronic service workshops.