Rugged and reliable, this line of survey meters is designed to suit a wide variety of radiation detection needs. It has easy-to-read displays for field application, and long battery life. The display features a backlight, audible alarm and two levels of signal threshold.
Product Detail
Autoranging digital and bar graph displays
Rugged metal body and long battery life
Wide range of GM and scintillation probes
Easy probe swapping with Selectra models and "I" probes
500 point data-logging with Plus models
Electra:
The Electra is a digital, microprocessor based, rate meter which is compatible with most GM and scintillation survey probes, and can be calibrated with an external probe for direct readout of dose rate or count rate, in a range of units. Intelligent software discriminates between true rate changes and insignificant fluctuations. Digitally controlled HV and preset parameters provide outstanding consistency between instruments: the setup does not drift and instruments with identical setups are directly interchangeable. The Electra is sturdy, well balanced, comfortable over long periods of use and operable when wearing double protective gloves. It is built in a metal extrusion with tough, replaceable, plastic end caps and is powered by long life dry cells or rechargeable batteries. Internal configuration switches let a supervisor choose which parameters are available to users.
Selectra:
The Selectra models feature automatic probe setup when used with our "I" style probes. These probes contain chips which store operating parameters, and connect to the meter via a 7-way Fischer connector (the Electra models having PET or MHV). Selectra benefits include tamperproof setup, simpler probe exchange, and less equipment to carry around.
GM:
GM models have a low weight, compact, front extension, housing an energy compensated GM Probe whose position is shown by two white crosses. Contact dose rate measurements can be taken without disconnecting the external probe. The GM models' memory includes an exact setup for the internal probe and adjustable setup for the external probe. A single key press switches from one probe to the other. "G" is displayed on screen when the internal GM probe is active. GM models are designed for ease of decontamination, with simple replacement of heavily contaminated parts.
Plus:
Datalogging is made easy with the Plus models. Up to 500 detailed results can be stored on-board in non-volatile memory, from all measuring modes. Result data includes rate, integrate time, date stamp, operating mode, stored background and unique location identities, and results can be reviewed on the instrument. Location identity is a breeze with the built-in iButtonTM reader, or optional barcode reader, with alphanumeric location names of up to 16 characters stored with each reading. The supplied PlusLink software handles communication between the Plus models and external PCs, running under WindowsTM. Datalog download is easily achieved, for further analysis with common applications such as MicrosoftTM Access or Excel. Plus model setup and automatic plateau plotting are also provided in PlusLink, along with other useful facilities.
Accessories:
Optional accessories include external probes, iButtons, barcode reader, reference sources, probe holders / legs, belt holsters, cables, batteries and chargers. Consult your supplier for details.
Settable, 0.1 cps to 100 kcps, or 1 cpm to 1000 kcpm
Response factors: :
dpm: 0.001 to 1.000 cpm/dpm Bq: 0.001 to 1.000 cps/Bq Bq/cm2: 0.01 to 999 cps per Bq/cm2 R/h: 0.01 to 999 cps per mR/h Gy/h: 0.001 to 99.9 cps per µGy/h Sv/h: 0.001 to 99.9 cps per µSv/h
Integrate mode preset time: :
1 to 10 s in 1 s steps, 15 to 30 s in 5 s steps, and 40 to 5,000 s in 10 s steps
Display: :
3 decade bar graph, 6 decade span, autoranging. 4 character digital display. Symbols for: units, sound, battery, alarm, mode, inhibit, channel, setup, overload and operational parameters
Backlight: :
A momentary press of the backlight key gives 30 s illumination
Sounder: :
Distinct tones for alpha and beta pulses, alarm, change of range and overload
Dead time: :
Presettable correction, 0 to 250 µs
Connectors: :
- Probe: :
PET or MHV (Electra models) Fischer (Selectra models)
- Headphone/ earpiece: :
3.5 mm stereo jack socket
- Charger: :
2.5 mm power jack socket
High Voltage supply: :
400 to 1400 V in 5 V steps. Max. load 66 MOhms, current 40 µA at 900 V
Overload setting: :
0.25 to 40 µA excess HV current, adjustable in 0.25 µA steps
Alarm thresholds: :
Presettable alpha and beta settings with dual probes 0.1 to 50,000 cps 1 to 300,000 cpm 0.1 to 50,000 Bq/cm2 0.1 to 50,000 Bq 1 to 300,000 dpm 0.01 µSv/h to 5 Sv/h 1 µR/h to 500 R/h 0.01 µGy/h to 5 Gy/h Off
Lower signal threshold: :
1.7 x 10-11C fixed (100 mV internal)
Upper signal threshold: :
2.6 x 10-11 C to 5.1 x 10-10 C (150 mV to 3 V internal in 50 mV steps
Batteries: :
Three 1.5 V, C sized dry cells (IEC LR14) or three rechargeables (IEC KRH 27/50)
Battery life: :
90 h typical, with dry cells and power saver feature (auto switch-off)
Operating temperature: :
-20 to +50 °C (-4 to +122 °F)
Humidity: :
up to 95%, non-condensing
EMC: :
CE approved
Dimensions: :
135 H x 110 W x 250 D mm (5.3" H x 4.3" W x 9.8" D) including handle. GM models are 300 mm (11.9") D
Weight: :
1.22 kg (2.7 lb) excluding batteries, except GM models which are 1.42 kg (3.2 lb)
Further Specifications - GM :
Gamma range: :
0.1 to 20,000 µSv/h
Intrinsic error: :
+/- 10% (IEC60846 requirement, 15%)
Energy response: :
-15% to +30%, 60 keV to 1.25 MeV relative to 662 keV 137Cs. Overreads slightly above 1.25 MeV
Response times: :
1 s sampling with 10 s rolling average for rates > 2 cps. Less than 2 s to respond to > 2.6 sigma changes (IEC60846 requirement, < 10 s)
Warm up: :
20 s, including completion of self-checks
Overload: :
Overload alarm and > Full Scale Deflection maintained for 20 mSv/h to 2000 mSv/h. Complete recovery after only 30 s
Pulsed radiation: :
Not designed for pulsed radiation fields
Coefficient of variation: :
Well within IEC60846 above 2.5 µSv/h
Alarms: :
One for dose rate, presettable to any on-range value. Settings stored in non-volatile memory
Temperature: :
-10 to +40 °C (14 to 114 °F), within +/- 6%
Temperature shock: :
Has no greater effect than slow changes
Humidity: :
No significant change, up to 95%, RH at 35 °C
Further Specification - Plus :
Preset precision: :
0.1% to 20% in 0.1% steps (at 2 sigma confidence level)
Sampler mode: :
Up to 500 cycles comprising Integrate, followed by Pause
Peak hold mode: :
Display is updated only if latest value exceeds all previous since selecting mode
Additional connectors: :
RS-232 serial link: 5-way DIN iButton receptor
Data log: :
Up to 500 unique locations, up to 500 total readings
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