Myron L ARH1 User Manual
Page 3
FEATURES and SPECIFICATIONS
A. Features
• Superior resolution 3 1/2 digit LCD
• Conductivity/TDS accuracy of ±1% of full scale
• pH accuracy of ± .05 pH units
• All electrodes are internal for maximum protection
• Latest electrode cell technology
• Water resistant
• Autoranging Conductivity/TDS
• Easy Conductivity/TDS and pH calibration
• User selectable Conductivity/TDS modes
• 3 “User Selectable” solution conversions (tempcos)
• Temperature Accuracy of ±1° C/F
B. General Specifications
Display
3 1/2 Digit LCD
Dimensions (LxWxH)
7.7x2.7x2.5 in.
196x68x64 mm
Weight
11.2oz./320g
Case Material
ABS
Cond/TDS Cell Material
ABS
Cond/TDS Cell Capacity
0.2 oz./5 ml
pH Sensor Well Capacity
0.04 oz./1.2 ml
Power
9V Alkaline Battery
Battery Life
>100 Hours/5000 Readings
Operating/Storage Temperature
32-132°F/0-55°C
Protection Ratings
IP64/NEMA 3
C. Specification Chart
D. Warranty/Service
The ARH1
has a 2 year warranty
,
excluding
the
pH
sensor,
which
has
limited 6 month
warranty. If an instrument fails to operate properly, se
e the
Troubleshooting
Chart, pg. 17. The battery and pH sensor are user-replaceable
For other
service, return the instrument prepaid to the Myron L Company.
If, in the opinion of the factory, failure was due to materials or
workmanship, repair or replacement will be made without charge. A
reasonable service charge will be made for diagnosis or repairs due to
normal wear, abuse or tampering. This warranty is limited to the repair or
replacement of the ARH1 only. The Myron L Company assumes no other
responsibility or liability.
E. TechPro™ Series Models
Additional information available on our web site at:
www.myronl.com
ARH1
pH
Conductivity TDS
Temperature
Ranges
0-14 pH
0-1999 µS
0-1999 ppm 0-71° C
2-19.90 mS 2-19.90 ppt 32 - 160° F
in 3 autoranges in 3 autoranges
Resolution
.01 pH 0.1 (<200 µS) 0.1 (<200 ppm) 0.1° C/F
1 (<2000 µS) 1 (<2000 ppm)
0.01 (>2 mS) 0.01 (>2 ppt)
Accuracy
±.0
5
pH ±1% of Full Scale
±1.0° C/F
Auto Temperature
0-71° C 0-71° C
Compensation
32 - 160° F 32 - 160° F
Conductivity or
KCl, NaCl or 442™
TDS Ratios
TechPro Series Models
pH1
AR1
ARH1
Parameters
pH
Conductivity or TDS, Conductivity or TDS,
& Temperature & Temperature pH & Temperature
2
3
MYRON L COMPANY
2450 Impala Drive
Carlsbad, CA 920
1
0
USA
760-438-2021