Rola-Chem 550136 heavy duty ORP probe with 8 ft leadRola-Chem ORP Probe Heavy Duty In stock$21833
Rola-Chem 550136 heavy duty ORP probe with 8 ft lead

Rola-Chem ORP Probe Heavy Duty

Ask a questionAPS # ROL-45-915
In stock
$21833

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Quick overview

  • Heavy duty build The heavy duty version of the Rola-Chem ORP probe, made for continuous commercial service.
  • Eight foot lead An 8 ft lead gives room to place the probe away from the controller.
  • Digital or analog Works with Rola-Chem digital and analog controller systems.
  • ORP measurement Reads oxidation reduction potential, the value the controller uses to judge sanitizer activity.
  • Genuine Rola-Chem Factory part 550136, not a generic probe.
  • Probes are consumable Every ORP probe drifts and eventually stops reading true, so replacement is routine maintenance, not a failure.
Full description and specifications ↓

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Product details

The Rola-Chem 550136 is the heavy duty ORP probe with an 8 ft lead, made for Rola-Chem digital and analog controller systems.

What it measures

ORP, oxidation reduction potential, is the reading a controller uses to judge how actively the sanitizer in the water is working. It is a better guide than raw chlorine concentration, because it reflects what the sanitizer is actually doing. The controller feeds chemical based on that number, so the probe is the piece the entire automated loop depends on.

When to replace it

Probes are consumables. The sensing element slowly loses response, readings drift, and calibration stops holding. Once a probe will not stay calibrated after cleaning, it is done, and the controller is dosing on bad information until it is replaced.

Note on the pair

ORP and pH are read by separate probes. If your controller manages both, this listing covers the ORP side only; the matching 8 ft heavy duty pH probe is a separate Rola-Chem part.

Specifications
Brand Rola-Chem
Manufacturer part number 550136
UPC 757706002295
Type ORP probe
Duty Heavy duty
Lead length 8 ft
Fits Rola-Chem digital and analog controller systems
Shipping weight 0.6 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which controllers does this probe work with?
Rola-Chem digital and analog controller systems.
How long is the lead?
8 ft.
Is this the ORP probe or the pH probe?
ORP. Rola-Chem makes a separate 8 ft heavy duty pH probe, and a controller running both chemistry loops needs one of each.
Why do my readings keep drifting?
ORP probes wear. The sensing element loses response over time, and once cleaning and recalibration no longer hold the reading steady, the probe is finished and should be replaced.
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