MGP WRM2 Specifikace stáhnout pdf (Strana 22)

15-00044

Revision 5

April 2008

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4.2.6 Automatic Range Switching for the DRM-1/2:

The detector includes two GM Tubes:

Low range - ZP-1201 (or equivalent), and high range - ZP-1301 (or equivalent).

In a field of 0.01 mR/h to 800 mR/h both GM tubes are connected and the field is measured by the low range GM

tube. If the radiation field is higher than 800 mR/h, the low range detector is disconnected, and the radiation field

is measured by the high range GM tube.

The switching between the low and high range GM-Tube is performed at 800 mR/h when the radiation field

increases (low range detector is disconnected), and at 600 mR/h when the radiation field decreases (low range

detector is connected).

4.2.7 Measuring Range for the DRM-1/2D

• m

R/h to 10 mR/h (0.01 µSv/h to 100 µSv/h)

• Automatic background subtraction is available via RMV software

• Overflow Alarm for reading > 10 mR/h

• Overload for field > 1 R/h

4.2.8 Automatic Background Subtraction

For the DRM-1/2D, the Automatic Background Subtraction is set (using the RMV software) by changing the

‘Background’ number to ‘9999’. The DRM-1/2D will count the background for 60 seconds and then set the

current background internally. To ensure a new update for the backgrounds, turn off dipswitches 7 and 8 and

unplug the AC adapter from power. When the device is powered on, the background will automatically update in

60 seconds. The displayed value on the optional display or software will show the net dose rate.

4.2.9 Power Saving Mode Feature

The Power Saving Mode will reduce power consumption in case the AC power is not present. The WRM2 radio

must be setup for Pin Sleep configuration, for this function to work properly. Contact MGP Instruments for

assistance.

High

GM Tube

Low

Overflow

alarm

Field

800 mR/h

1000

R/h

ZP 1301

ZP 1201

600

mR/h

0.01 mR/h

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