Keeping up appearances

Michell Instruments has loaned two instruments to the National Needlework Archive to help preserve an iconic mural. Designed by Constance Howard for the Festival of Britain, 'The Country Wife' is now in urgent need of restoration work.

Part of the preservation process involves storing the work in an anoxia bubble where levels of oxygen are maintained at 1% with an RH of less than 50% at 23°C. To monitor this environment, the NNA is using two of Michell's instruments: an XTP600 Oxygen Transmitter and a DM509 RH handheld device.

The XTP600 uses the highly stable thermo-paramagnetic sensing technology to measure levels of oxygen in gases.

The DM509 is a versatile handheld RH and temperature transmitter.

Lightweight and portable, it is easy to operate.