YSI ORP15A ORP (redox)/Temperature Pen

Q: What does the ORP15A measure?

Oxidation-reduction (redox) potential in millivolts, absolute or relative, plus temperature.

Q: What is the mV range and how precise is it?

-1100 to +1100 mV at 1 mV resolution, with accuracy of 1 mV ±1 LSD.

Q: How is it calibrated?

Against Zobell ORP standard solution (YSI 3682, 125 mL), ordered separately; YSI does not publish a number of calibration points for this pen.

Q: Is temperature compensation automatic?

Yes — compensation is automatic, and the instrument is rated to operate between 0.0 and 50.0 °C.

Q: Is the electrode replaceable?

Yes — the electrode cap is user-replaceable, so a spent sensor is a part swap rather than a new instrument.

Q: Why would I monitor ORP in an aquaculture system?

Redox is the practical way to track ozone and chlorine activity in a recirculating or live-holding system, where a residual reading alone can be misleading.

Q: How long does it run on batteries?

More than 200 hours on four LR44 alkaline cells, with a low battery indicator and IP67 waterproof housing.

A pen-style ORP and temperature meter for tracking ozone and chlorine activity in water.

$330.00 ex GST

SKU: ORP15A

Categories: Pen Meters, Water Quality Monitoring

Applications: Live Holding & Purging, Public Aquarium, RAS, Water & Wastewater Treatment

Brand: YSI

YSI ORP15A ORP (redox)/Temperature Pen - Image 2

Product Information

Key Features

ORP -1100 to +1100 mV, resolution 1 mV, accuracy 1 mV ±1 LSD — absolute and relative mV readings
Temperature -10 to 100 °C, resolution 0.1 °C, accuracy ±0.3 °C
Automatic temperature compensation; instrument operating range 0.0 to 50.0 °C
Calibrated against Zobell ORP standard solution (YSI 3682, 125 mL) — sold separately
User-replaceable electrode cap, so the pen is reusable rather than disposable
IP67 waterproof housing with a graphic display, on-screen prompts and one-handed operation
Four LR44 alkaline cells give over 200 hours; 50 data-set memory and a hold function
1-year instrument warranty and 6-month electrode warranty
Choosing your model: the ORP15A is supplied as one complete pen, so there is no model choice — order it where you need redox for ozone or chlorine control, and add Zobell calibration solution to commission and check it.

Specifications

Specification	Detail
ORP / mV range	-1100 to +1100 mV — resolution 1 mV, accuracy 1 mV ±1 LSD
Temperature range	-10 to 100 °C (14.0 to 212 °F) — resolution 0.1 °C, accuracy ±0.3 °C
Temperature compensation	Automatic (ATC)
Operating range	0.0 to 50.0 °C (32.0 to 122.0 °F)
Calibration	Against Zobell ORP standard solution (YSI 3682, 125 mL, sold separately). Number of calibration points not published by supplier.
Readings	Absolute and relative mV
Electrode	User-replaceable electrode cap
Waterproof rating	IP67
Power	Four LR44 alkaline cells — over 200 hours, low battery indicator
Memory	50 data sets
Warranty	1 year instrument, 6 months electrode

Downloads

YSI ORP15A Spec Sheet YSI EcoSense ORP15A Instruction Manual

Frequently Asked Questions

What does the ORP15A measure?

What is the mV range and how precise is it?

How is it calibrated?

Is temperature compensation automatic?

Is the electrode replaceable?

Why would I monitor ORP in an aquaculture system?

How long does it run on batteries?

Spare Parts & Consumables

Zobell ORP Calibration Solution
$70.00 ex GST Add to cart

YSI ORP15A ORP (redox)/Temperature Pen

Product Information

Key Features

Specifications

Downloads

Frequently Asked Questions

Spare Parts & Consumables

Zobell ORP Calibration Solution

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