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STs Series ORP (redox) Sensor - 2001 ORP

• Replaceable electrode with platinum sensing element measuring -1000 to +1000 mV oxidationreduction potential (ORP)
• Large reference half-cell to reduce calibration frequency
• Secondary 0-50°C temperature sensor
• 2-wire, 4-20 mA analog outputs compatible with wide range of dataloggers or remote telemetry units (RTU)
• Narrow diameter (0.75 inches or 1.9 cm) for insertion down pipes or boreholes
• Low power usage

Model Number: 2001 ORP
Data Sheet:

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Product Specification

Description:

The pHionics STs Series™ ORP is a low maintenance, dual-output sensor that pairs with a datalogger or RTU for real-time water quality monitoring. A narrow diameter allows the STs Series to go where other sensors cannot while a durable, chemical-resistant housing ensures many years in-use.

All parts, including the cable, are easily replaceable without tools using pHionics patented pHiConn™ System, saving frustration and money.

Highlighted Features:

• Replaceable electrode with platinum sensing element measuring -1000 to +1000 mV oxidationreduction potential (ORP)

• Large reference half-cell to reduce calibration frequency

• Secondary 0-50°C temperature sensor

• 2-wire, 4-20 mA analog outputs compatible with wide range of dataloggers or remote telemetry units (RTU)

• Narrow diameter (0.75 inches or 1.9 cm) for insertion down pipes or boreholes

• Low power usage

Applications：

• Groundwater Monitoring

o Agricultural Runoff

o Mining Pollution

• Industrial Effluent Monitoring

• Wastewater Treatment

• Environmental Remediation

• Aquaculture

Specifications：

ORP Sensor
Output	4-20 mA
ORP (redox) Range	-1000 to +1000 mV
Operating Temperature	0-70℃
Pressure Range	0-70 psi
Electrode Type	Platinum sensing element,silver/silver chloride gel-filled reference
Transmitter Type	2-wire
Automatic Temperature Compensation	None
Isolation	600 VDC
Power Supply Voltage	8-40 VDC
Warm-up Time	2 seconds
Response time	95% < 20 seconds
Wetted Materials	316 Stainless Steel, Delrin®, Viton™, glass, epoxy
Length	14.25 in (36.20 cm)
Width	0.750 in (1.9 cm) maximum
Weight (No cable)	0.50 lbs (0.227 kg)
Linearity	± 4 mV
Accuracy	± 4 mV*
Sensitivity	± 2 mV
Repeatability	± 10 mV
Temperature Sensor
Output	4-20 mA
Temperature Range	0-50℃
Accuracy	+/- 1℃
Linearity	+/- 0.5℃
Power Supply Voltage	7-40 VDC
Cable
Cable Material	Polyurethane
Type	4 conductor, Kevlar® reinforced, water blocked, shielded, twisted-pair wiring
Maximum Distance	3 miles
Resistance per 1000 ft (304.8 m)	26 Ohms
Replaceable?	Yes