Comparison of Aware Electronics Corp. LCD-90 + RM-80 to the Inspector EXP Probe Model


Digital radiation monitors with the added versatility of an external probe offer many advantages over and above monitors with built-in detectors. For example the external probe can be moved around suspected radioactive areas while the digital readout remains conveniently viewable.

Here we compare Aware Electronics Corp. LCD-90 and RM-80 combination to an Inspector EXP.

Tube: Both the RM-80 and Inspector EXP use a made in the USA LND halogen-quenched, uncompensated GM tube with thin mica window, 1.4-2.0 mg/cm2 areal density. Effective diameter of window is 45 mm (1.75 in.).

Feature LCD-90 + RM-80 Inspector EXP
Radiation Detected Alpha
Beta
Gamma
X-Ray
Alpha
Beta
Gamma
X-Ray
Cable Type and Length Snap in place standard telephone cable extendable to 1000 feet High voltage COAX fixed length (a few feet)
Display Seven-character starburst main display with both numeral and scrolling text, moving decimal mark and scientific notation along with a six digit real-time clock display and indicators 4 digit display and indicators
Units CPS, CPM, microR/hr., milliR/hr., microSV/hr., Total. The minimum floating point displayable values (besides zero) are 0.001 microR/hr, 0.001 MicroSV/hr, 0.001 MilliR, 0.001 CPS, 0.001 CPM and 1 Total count. CPS, CPM, milliR/hr. , microSV/hr., Total. No floating point
Maximum Reading Expressed in CPS 11,000 CPS limited by tube. LCD-90 can measure and display up to 12 million CPS 5,000 CPS
Audio Off, Short Click, Medium Click, Medium Long Click, Long Click Off, On
Alarm Settable from 0 to 10 million radiation units in CPS, CPM, microR/hr., milliR/hr., microSV/hr. or Total 0 to 50 milliR/hr or 0 to 160,000 CPM
Alarm Actions Any combination of the following: Audio Beeper, Dedicated Alarm LED flashes, LCD display “ALARM” icon, Internal vibrator power MOSFET activated to power internal MOLEX connector, Alarm voltage output pin in Serial port, Alarm voltage output pin in MOD connector Audio Beeper
Input Output ports Built-in USB port and Serial port both of which can be used at the same time. Periodic ASCII output in any radiation unit desired with settable running average, with date-time code for each point. Immediate ASCII output equal to LCD display value and date-time code. Binary output with CRC error detection. NAK resends packet. Separate “Click” signal allows clicking PC’s sound system. ASCII and binary input allows setting of all the menu items from a PC using standard terminal programs or Aware’s Aw-Radw software. Click pulse output. No USB port, no Serial port
Clock Quartz crystal real-time clock with separate six character display settable by menu buttons or through USB or Serial port by ASCII commands or Aw-Radw which can sync the time with the PC’s time. Includes menu item to adjust clock speed in increments of 0.003% as-well-as select quartz crystal loading caps. 10pf, 14pf or 18pf. No Clock
LEDs Event LED, Alarm LED, USB Transmit LED, USB receive LED Event LED
Running Average Depth Settable between 0 and 120 seconds in increments of one second. Includes one button push to immediately reset running average. 3 seconds or 30 seconds. No reset i.e. must wait for running average to clear with change in radiation level.
Internal Data Logging 110,000 data-points with date-time. Store once per second to once per 65,535 seconds (i.e. up to once per 1092 minutes). Unlimited number of internal radiation data files up to the limit of flash each with its own store cycle i.e. start store, stop store as many times as desired. ASCII or binary download data through USB or Serial port No data-logging
Calibration Calibration menu allows easy calibration to any source desired or using a pulse generator. Calibration range: 0 to 65.535 in units of 0.001 Multi-step (26 step) calibration procedure. Calibration range: 1 to 199
Dead Time Correction Settable from 0 to 2000 microseconds in increments of 1/1000th of one microsecond. Unknown dead time correction
Power Supply Internal battery holder can accept two AAs, three AAAs or one nine volt battery. The LCD-90 auto draws power from USB port, Serial port, standard 2.1mm power jack (3 VDC to 13.8 VDC) or the battery. When LCD-90 senses power available from one of the ports or power jack, it disconnects the battery by-way-of a zero voltage drop power MOSFET. Allows, for example, power from a small solar panel with auto internal battery backup. Nine volt battery. No other power source.
Power Draw ~0.1ma. 24,000 hrs. per battery 2160 hrs. per battery
Size LCD-90: 4.4" x 2.44" x 1.06"; RM-80: 4.4" x 2.44" x 1.06" Inspector: 5.9” x 3.2” x 1.2”; Probe: 10.25” x 2.75” x 1.5”
Settings and Data Retention Maintains all settings and data files in non-volatile flash memory such that if all power is removed, all settings and data files are retained. No non-volatile memory. Must reset everything if power is removed.
Use with other sensors LCD-90 can be used with any Aware RMs or monitors by others. Multi Aware RMs can be plugged into the LCD-90 at the same time to double, triple, quadruple the sensitivity. One probe with COAX connection
Software Interface USB and/or Serial port periodic ASCII output in any radiation unit desired with settable running average, with date-time code for each point. Immediate ASCII output equal to LCD display value and date-time code. Binary output with CRC error detection. NAK resends packet. Separate “Click” signal allows clicking PC’s sound system. ASCII and binary download of all data logged files. ASCII and binary input allows setting of all the menu items from a PC using standard terminal programs or Aware’s Aw-Radw software. No USB or Serial port. No ASCII or binary output. Click pulse output for use with error prone software. See Pulse counting error prone software for example errors induced by typical pulse counting software
Wireless Operation The LCD-90’s Serial port allows plugging in a Bluetooth, WiFi wireless or GSM cellular modem. See bottom of this page: Aware's New LCD-90 Pro MicroController - Data-Logger No wireless option
Price $395.50 + $329 = $724.50 $888 to $1,248.00

It is often useful to have the ability to separate the readout from the sensor unit with the snap in telephone wire provided by the LCD-90 + RM-80 combo. For example let’s say you wanted to check for radiation from several packages of food. Place the RM-80 in the middle of the pile of packages with the LCD-90 at hand. Attach the RM-80 to a stick with VELCRO so it can be held close to the ground, or into a crawl space, or up a wall or in between boulders or down a well hole or by a spring. Place the RM-80 down by the water tank or next to the air filter unit within the air handler with the LCD-90 readout mounted at the top of the stairs.


Shown below is a LCD-90 and RM-80. A Class 1 Bluetooth wireless adapter with built-in rechargable Lithium Ion battery and stub antenna, is plugged into the LCD-90's serial port (300 feet range) allowing wireless control and downloading both stored data and real-time data from the LCD-90 to a PC. Also available are wireless network adapters and GSM cellular modems. Alternatively the LCD-90 can be plugged directly into the PC’s serial and/or USB port.

LCD-90, RM-80, Bluetooth
Class 1 Bluetooth Adapter with built-in rechargable Lithium Ion battery, plugged into the LCD-90's serial port, feeding real-time data wirelessly to Aw-Radw seen in the background. A radioactive rock was placed on top of the RM-80 causing the graph to rise.


Aware Electronics Corp. RM-80 plugged into our LCD-90 Pro Micro-Controller Data-Logger

RM-80 and LCD-90


Bill DiPuccio: "The more I dig into this software the more impressed I am with its sophistication. It seems that you thought of everything"


Here is the set up I use to test small samples (minerals, food, etc.). The RM-80 rests on a piece of plywood drilled to accommodate the window. Height is adjustable using a machinists accessory made for drill presses."
DiPuccio's Lab1


Aware Electronics Corp. LCD-90 Pro Micro-Controller Data-Logger with RM-80 hooked up to a custom Radon sampling fan:

RM-80, LCD-90 Custom Radon Sampling Fan-Filter


Inspector-EXP

Inspector EXP


  • Aware Electronics Corp. LCD-90 Pro MicroController - Data-Logger includes a USB cable and internal battery holders that accept either two AAs, three AAAs or one nine volt battery. We include three AAA batteries installed. As with all our instruments and software, if you are displeased for any reason you can return the LCD-90 Pro within 45 days for a full refund. Up to this point nobody has returned a LCD-90 nor have any failed. They are designed to last a lifetime.

  • Click here for info: Aware's New LCD-90 Pro MicroController - Data-Logger

    For the last 20+ years our goal has been and is to provide the best solution for radiation monitoring.

    E-mail aware@aw-el.com
    Phone:(800)729-5397 or Phone/Fax: (302)655-3800

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