The Powerhouse acknowledges the Traditional Custodians of the ancestral homelands upon which our museums are situated. We respect their Elders, past, present and future and recognise their continuous connection to Country.
2007/60/3 Radiation detector, 'Radiation Alert Monitor 4', plastic / leather, made by SE International Inc, Summertown, Tennessee, United States of America, 1990-2005. Click to enlarge.

'Radiation Alert Monitor 4' radiation detector

Made
These various radiation meters were originally procured and/or used by the NSW government agencies including the former State Pollution Control Commission (SPCC), the Environment Protection Authority (EPA), the NSW Department of Environment and Conservation (DEC), and possibly the NSW Department of Health. These agencies, collectively over the years regulated the use of radiation apparatus (for example x-ray machines used in medical diagnostics) and radioactive substances (for example …

Summary

Object No.

2007/60/3

Object Statement

Radiation detector, 'Radiation Alert Monitor 4', plastic / leather, made by SE International Inc, Summertown, Tennessee, United States of America, 1990-2005

Physical Description

Radiation detector in a small handheld black plastic case. The front of the machine has two switches and a meter in the readout screen. The scale in the readout screen has 0-5µ Sv/hr (sieverts per hour) in the upper scale and 0-0.5 mR/hr (rem) in the lower scale. The range switch consists of three settings: x1, x10, and x100. The whole unit has a leather carry case.

Marks

Printed on face of detector, 'RADIATION ALERT / MONITOR 4'.

Dimensions

Height

160 mm

Width

90 mm

Depth

50 mm

Weight

178 g

Production

Notes

Radiation detector made by SE International Inc in Summertown, Tennessee, United States of America, between 1990-2005.

SE International Inc is a small manufacturer of radiation detection equipment for use in industrial, governmental, educational, medical, and environmental markets. They have been producing radiation alert equipment since 1970.

The Monitor 4 radiation detector is a compact general purpose survey meter capable of detecting alpha, beta, gamma, and X-rays over 3 selectable ranges. The monitor senses ionizing radiation by means of a GM (Geiger Mueller) tube with a thin mica window. The tube is closed inside the instrument. When a ray or particle of ionizing radiation enters or passes through the tube, it is sensed electronically and displayed by a red light count. When the switch is in the AUDIO position, the instrument will also beep with each radiation event, about 5 to 25 counts at random intervals (depending on your location and altitude) can be expected every minute from naturally occurring background radiation.

Source

Credit Line

Gift of the Department of Environment and Conservation New South Wales, 2007

Acquisition Date

4 June 2007

Cite this Object

Harvard

'Radiation Alert Monitor 4' radiation detector 2022, Museum of Applied Arts & Sciences, accessed 9 February 2023, <https://ma.as/365721>

Wikipedia

{{cite web |url=https://ma.as/365721 |title='Radiation Alert Monitor 4' radiation detector |author=Museum of Applied Arts & Sciences |access-date=9 February 2023 |publisher=Museum of Applied Arts & Sciences, Australia}}