Extech Instruments MA420 Bedienungsanleitung Seite 4

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Dual Display MultiMeter
High accuracy, 40,000 count, dual display
with bargraph plus optional RS-232 PC interface
1µV or 10nA resolution with 0.06%
basic DCV accuracy
Large 4,000/40,000 count LCD displays primary,
secondary, bargraph, range, & function
45Hz - 1kHz ACV frequency response
Dual display of Volts/Amps with Frequency
Record min/Max and True Average with
relative time stamp for these functions
Auto power off and sleep mode
Optional RS-232 communication &
PC-DOS data acquisition software
Complete with test leads, 9V battery
and protective holster
CL380281 .......... Dual Display MultiMeter
Conductivity or TDS Meter
Exclusive Oyster
design with adjustable flip-up display
Two Models: Wide measuring range from
10 to 19,990µS for conductivity or 10-19,990 ppm
for TDS. Calibrate for changes in cell constants via
a cell adjust.
Front panel slope, calibration
and temperature controls
Rugged design for handheld or benchtop use
Complete with polymer
bodied conductivity
cell with 39" cable, 9V
battery, neckstrap and case
CL341150 .......... Oyster™ TDS Meter Kit (polymer cell)
CL341250 .......... Oyster™ Conductivity Meter Kit (polymer cell)
Conductivity Meter
Unique Oyster™ design with
a flip up adjustable display
Wide measuring range from
10 to 19,990µS for conductivity
Calibrate for changes in cell
constants via a cell adjust
Complete with 9V battery and neckstrap
CL34125A ......... Conductivity Meter
Protein (ATC) RF30
Measures serum protein concentration and
urine specific gravity
Protein Refractometer
Easy to operate refractometer provide accurate and
repeatable measurements on easy to read scales
Requires only 2 or 3 drops of solution
The prism and lens with a simple focus adjustment
provides repeatable results
Complete with carrying case and calibration screwdriver
CLRF30 ............. Protein Refractometer with ATC
Salinity Refractometer
Portable, durable, lightweight design
Handheld refractometers designed for field use, food processing,
plant, or wherever you need to measure salinity
Easy to operate by using only two drops of the solution being measured
Value of the solution is viewed by a blue and white boundary line
Measures from 0 to 160ppt salinity with minimum scales of 0.5ppt
and 0.001nD; corresponding refractive index is 1.3330-1.3730
A focusing eyepiece is designed for maximum light
transmission and contrast under normal lighting conditions
Complete with case and screwdriver for easy calibration
CL588306 ......... 0-160 (PPT) Salinity Refractometer
now $89
(was $249)
save $160
now $106
(was $199)
save $93
now $49
(was $159)
save $110
now $31
(was $89)
save $58
ORDER TODAY Limited Quantity!
CALL 781-890-7440 ext. 220 Minimum Order $25
ISO 9001 CERTIFIED
now $103
(was $199)
save $96
Pocket Hygro-Thermometer
Wide range and fast humidity measurements
Large LCD displays two measurements simultaneosly
Data Hold with Auto Power off
Measure humidity down to 1% RH
Overall accuracy ±3% of reading
Precision capacitance sensor
°F/C switchable
Response time within 80 seconds
Recall MIN/MAX measurements
Compact and attractive design with pocket clip
Complete with protective cap and two AAA batteries
Dimensions: 6.7 x 1.9 x .13”; Weight 5 oz.
CL445911..........Pocket Hygro-thermometer Plus Dew Point
now $40
(was $89)
save $49
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