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TempHion™
Brand: Seametrics, IncThe TempHion™ is a submersible water quality sensor and datalogger that includes a ph/ORP or Bromide element as well as one thermistor-based temperature element.
With a patented reference electrode, the TempHion provides long-term stability for continuous or intermittent monitoring—making unattended in-situ pH testing and Bromide tracer studies possible without frequent calibrations or service.
Features- Easy-to-use in-field calibration utilities
- 316 stainless steel, fluoropolymer, acetal, and PTFE construction
- Solution ground for excellent noise protection
- Operates on low power
- Long-term sensor stability
- Measures pH, ORP, and temperature
- RS485 network
- 200,000+ records stored in non-volatile memory
- Dual protocol (Modbus® and SDI-12)
- Narrow 0.75″ diameter, 17.625″ length
- Available cableless or with a variety of cable options—polyethylene, polyurethane, or FEP
- Easy export to spreadsheets and databases
Specifications
Brand
Weight
- 0.8 lb (0.4 kg)
Body Material
- Acetal & 316 Stainless Steel or titanium
Wire Seal Material
- Fluoropolymer and PTFE
Cable
- Submersible: polyurethane, polyethylene, or ETFE (4 lb/100 ft., 1.8 kg/30 m)
Field Connector
- Standard
Operating Range
- 0° to 55° C (32° to 131° F)
Storage Range
- Without batteries: -20° to 80° C (-4° to 176° F)
Internal Battery
- Two replaceable lithium ‘AA’ batteries - Expected battery life: 18 months at 15 min. polling interval (may vary do to environmental factors)
Auxiliary
- 12 Vdc - Nominal, 9-15 Vdc - range
Modbus®
- RS-485 Modbus® RTU, output=32bit IEEE floating point
SDI-12
- SDI-12 (ver. 1.3) - ASCII
Memory
- 4MB - 200,000 records
Logging Types
- Variable, user-defined, profiled
Logging Rates
- 2x/sec maximum, no minimum
Baud Rates
- 9600, 19200, 38400
Software
- Complimentary Aqua4Plus
Networking
- 32 available addresses per junction (Address range: 1 to 255)
File Formats
- .a4d and .csv (also .xls in Windows® 8 and earlier)
Element
- 30K ohm thermistor, Epoxy bead/external housing
- Glass combination electrode
- Platinum ring
- Ag/AgCl solid-state electrode (Ion electrode method)
Accuracy
- ± 0.2° C
- ± 0.2 pH units, 0.1 % mV value (typical)
- 0.1 mVH, 0.1 % mV value (typical)
- ± 5.0 % of measured value (typical)
Resolution
- 0.1° C
- 0.01 pH units
- 0.1 ppm
Units
- Celsius, Fahrenheit, Kelvin
- pH, mV
- Eh, mV
- ppm, mV
Range
- 0° to 55° C (32° to 131° F)
- 0-14 pH units / -538 to 260 mV
- ± 1200 mV
- 0-10,000 ppm
Compensated
- 0° to 40° C (32° to 104° F)
- Isopotential point characterization
Calibration
- One or two point calibration w/ pH buffers (4 & 7 or 7 & 10)
- EH 1 pt. calibration
- One or two point calibration w/ ionic strength adjustment
Reference Solution
- Potassium Nitrate - (KNO3 )
Reference
- Ag/AgCl solid state electrode, capillary liquid junction, TempHion™ reference solution
Maximum Depth
- pH/ORP: 700 ft (210 m) / 300 psi, ISE: 230 ft (70 m)/100 psi
Environmental
- IP68, NEMA 6P
- Precise single- or multi-well tracer tests
- Saltwater intrusion tracking
- Tidal influence studies
- Wastewater treatment discharge
- pH monitoring