Test Kit ensures that gas detectors work properly.
October 12, 2004 -
Supplied in carry case, Wizard Gas Testing Kit applies standard 4-gas mixture to Tetra monitor to check that each sensor is working within acceptable response limits. If Tetra determines that any sensor is outside predefined limits, it displays message indicating need for calibration. Wizard includes 34 l cylinder of methane, oxygen, carbon monoxide, and hydrogen sulfide, fitted with trigger valve for switching on gas.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Crowcon Detection Instruments Ltd.
21 Kenton Lands Rd.
Erlanger, KY, 41018
USA
Gas Detectors Always Accurate With New 'Wizard' Testing Kit
(Milford, OH) - Users of portable gas detectors need to know their units are working properly and will always alarm in the presence of hazardous gases. Till now there has not been a simple and convenient way of checking that these detectors will always respond correctly. With Crowcon's new Wizard gas testing kit, users of the Tetra four-gas personal monitor can ensure that their instruments remain accurate at all times.
Supplied in a convenient carry case, the Wizard automatically applies a standard four gas mixture to the Tetra to check that each sensor is working within acceptable response limits. If Tetra determines that any sensor is outside predefined response limits it automatically displays a message indicating the need for calibration. Users can also choose calibration mode in which all four sensors are simultaneously calibrated using the four gas mixture. If this is not possible, a message is displayed advising that the unit should be returned to Crowcon for servicing.
The Wizard features a 34-litre cylinder of quad gas - a high-stability mixture of methane, oxygen, carbon monoxide and hydrogen sulfide - fitted with a "trigger" valve for switching on the gas. Also included is a flow plate which attaches to the detector, an exhaust line, and a magnet which is simply passed over the Tetra display to initiate testing.
With testing underway, the detector analyses its responses to the different gas components against values stored in its memory; as long as these are within predefined limits, a successful test is indicated on the instrument display. If the test is unsuccessful a message is displayed indicating that calibration is required. If the detector has been manually zeroed within the previous 15 minutes, the option to calibrate in the field is given when the magnet is applied. To accept the option and begin calibration, the user needs only to press Tetra's single pushbutton within ten seconds. No other controls are necessary.
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