ST Series Pen Meter
Instruction Manual
Thank you for choosing OHAUS waterproof pen meters. Please read the manual completely before using. This manual
serves the following model:
Thank you for choosing OHAUS waterproof pen meters. Please read the manual completely before using. This manual serves the following
models:
• ST10C-A (pen Conductivity meter)
• ST10C-B (pen Conductivity meter)
• ST10C-C (pen Conductivity meter)
• ST10T-A (pen TDS meter)
• ST10T-B (pen TDS meter)
• ST10S (pen salinity meter)
Accuracy
ST10C/ST10T/ST10S pen meters are factory calibrated.
Maintenance
Clean the electrode before and after each measurement .
The meter use button battery 1.5V (AA)*4 , replace all the batteries when the display fade or not turn on.
ST10C/ST10T/ST10S pen meters Instruction Manual
First Usage
Condition the electrode by rising and immersing it in pure water for 0.5 hour before use.
Conductivity/TDS/Salinity Measurement
Remove the protection cap, rinse the Conductivity electrode with pure water (distilled water), and wipe clean.
• Press button-On/Off turn on the meter.
• Dip the electrode about 2 to 3cm into the test solution (at least 20ml). Wait until the reading stabilized.
• Clean the electrode with pure water after each measurement.
The electrode is replaceable.
Welcome to OHAUS (www.ohaus.com)!
After more than a century of perfecting the art of measurement through our durable weighing products, OHAUS precision is now available in a
line of portable electrochemistry products that providesaccurate measurement of pH, ORP, conductivity, TDS and salinity.
ST series pen meters are the economical option when you are simply looking for meters that are easy to use and provide accurate measurements.
The pen meters should not be used by Children of age 12 or younger.
This product conforms to the EMC Directive 2004/108/EC. The Declaration of Conformity is available online at europe.ohaus.com/eu-
rope/en/home/support/compliance.aspx.
Order Information
Specification
Model
ST10C-A
ST10C-B
ST10C-C
ST10T-A
ST10T-B
ST10S
Description
Pen Conductivity Meter, range 0.0~199.9 μS/cm
Pen Conductivity Meter, range 0~1999 μS/cm
Pen Conductivity Meter, range 0.00~19.99 mS/cm
Pen TDS Meter, range 0.0-100.0 mg/L
Pen TDS Meter, range 0-1000 mg/L
Pen Salinity Meter, range 0.0-10.0 ppt
Water Proof Pen Meters
Cond. range
Resolution
Accuracy
Battery
Dimension
Weight
Auto-off
Ambient temperature
Materials
ST10C-A
0.0~199.9 μS/cm
0.1 μS/cm
±2.5% FS
4 x 1.5V
183×45×35mm
105g
After 6 min no operation
0~50 °C(32-122°F)
ABS
ST10C-B
0~1999 μS/cm
1 μS/cm
±2.5% FS
4 x 1.5V
185x42x37mm
105g
After 6 min no operation
0~50 °C(32-122°F)
ABS
ST10C-C
0.00~19.99 mS/cm
10 μS/cm (0.01 mS/cm)
±2.5% FS
4 x 1.5V
185x42x37mm
105g
After 6 min no operation
0~50 °C(32-122°F)
ABS
ST10T-A
0.0-100.0 mg/L
0.1 mg/L
±2.5% FS
4 x 1.5V
185x42x37mm
105g
After 6 min no operation
0~50 °C(32-122°F)
ABS
ST10T-B
0-1000 mg/L
1 mg/L
±2.5% FS
4 x 1.5V
185x42x37mm
105g
After 6 min no operation
0~50 °C(32-122°F)
ABS
ST10S
0.0-10.0 ppt
0.1 ppt
±2.5% FS
4 x 1.5V
185x42x37mm
105g
After 6 min no operation
0~50 °C(32-122°F)
ABS
Replaceable electrodes:
Electrode CT10A ST
Electrode CT10B ST
Electrode CS10C ST
In conformance with the European Directive 2002/96/EC on Waste Electrical and Electronic Equipment (WEEE) this device may not be disposed of in domestic waste.
This also applies to countries outside the EU, per their specific requirements. Please dispose of this product in accordance with local regulations at the collecting point
specified for electrical and electronic equipment. If you have any questions, please contact the responsible authority or the distributor from which you purchased this
device. Should this device be passed on to other parties (for private or professional use), the content of this regulation must also be related. Disposal instructions in Europe
are available online at europe.ohaus.com/europe/en/home/support/weee.aspx. Thank you for your contribution to environmental protection.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna, increase the separation between
the equipment and receiver or consult the dealer or an experienced radio/TV technician for help.
