Economical Conductivity/TDS Meter with RS232 Output
CDH221
U Economical
U Easy to Operate
U Splashproof Front
U RS232 Output Standard on CDH222
The CDH221and CDH222 are ideal for quality control,
agricultural, water conditioning, beverage, fish
hatcheries, laboratory, universities, and many other
industrial applications. These microprocessor-based
digital meters are rugged, portable units that can
recognize and compensate for electrode offset and
slope. The CDH222 also has an RS232 output. Other
features of the CDH222 include °C/°F selection, auto
shut-off, and TDS measurement. Overload indication
and data hold are standard on both units.
CDH221 with conductivity
probe included shown
smaller than actual size.
SPECIFICATIONS
Models CDH221 CDH222
Display 51 x 32 mm (2.00 x 1.25") LCD, 51 x 32 mm (2.00 x 1.25"),
21.5 mm (0.8") digits dual-function LCD, 15 mm (0.6") digits
Measurement Conductivity Conductivity/TDS/temperature
Ranges/Resolution/Accuracy
Conductivity 2 mS: 0.2 to 2.0 mS/0.001 mS/±(3% FS +1d)
20 mS: 2 to 20.0 mS/0.01 mS/±(3% FS +1d)
TDS 2000 ppm: 132 to 1320 ppm/1 ppm/±(3% FS +1d)
Temperature °C (°F) — 0 to 60 (32 to 140)/0.1/±0.8 (1.5)
Temperature Compensation °C (°F) 0 to 50 (32 to 122) 0 to 60 (32 to 140)
Data Output — RS232
Data Hold Yes
Sampling Time Approximately 0.4 s Approxroximately 0.4 s
Operating Temperature °C (°F) 0 to 50 (32 to 122)
Operating Humidity Less than 80%
Memory Recall Maximum/Minimum
Power Supply 9 V battery (included)
Dimensions (H x W x D) 200 x 68 x 30 mm (7.9 x 2.7 x 1.2") 195 x 68 x 30 mm (7.6 x 2.7 x 1.2")
Weight of Meter and Probe 270 g (0.6 lb) 290 g (0.64 lb)
Probe Specifications
Probe Connections 4-pin connector Plug-and-play socket
Temperature °C (°F) 0 to 60 (32 to 140) (CDE221/CDE222)
Dimensions 22 Dia. x 120 mm L with 1.06 m (3.5') cable (CDE220/CDE221)
—
20,000 ppm: 1320 to 13200 ppm/10 ppm/±(3% FS +1d)
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For Sales
& Service
U.S.A. and Canada
CDH222 with conductivity
probe included, shown
smaller than actual size.
CDH222 comes with complete operator’s manual,
conductivity probe and carrying case.
To Order Visit omega.com/cdh221_cdh222 for Pricing and Details
Model No. Description
CDH221 Conductivity meter with probe
CDH222 Conductivity/TDS/temperature meter with RS232 output, probe and carrying case
Accessories
Model No. Description
CDE221 Replacement conductivity probe for CDH221
CDE222 Replacement conductivity/TDS/temperature probe for CDH222
SWCABLE Cable and software for RS232
MN1604 Replacement 9V battery
CDSA-1500 1500 μS conductivity standard
CDSA-4500 4500 μS conductivity standard
CDSA-1413 1413 μS conductivity standard
Units come with 9V battery and complete operator’s manual.
Ordering Examples: CDH221, conductivity meter. CDH222, conductivity/TDS/temperature meter and SWCABLE, cable and software for RS232.
Order Online
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