Product Details
The Honeywell 51451326-503, also cataloged as the 51451326-503 pH Probe Sensor, operates as a dedicated hardware component for continuous electrochemical hydrogen ion measurement within Honeywell analytical process loops. Configured with a 20 inch integrated cable assembly, it provides direct physical/electrical execution for in-line and immersion fluid sensing.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 51451326-503 |
| Brand | Honeywell |
| Origin | Industrial Standard Assembly |
| Weight | 1.31 lbs (0.59 kg) |
| Dimensions | Standard Industrial Analytical Probe Dimensions |
| Operating Temp | 0 to 100 deg C (32 to 212 deg F) |
| Power Consumption | Passive Electrochemical Sensor Element |
| Sensor Type | pH Glass Electrode Assembly |
| Cable Interface | 20 inch Integrated Cable Lead |
| Application Mounting | In-Line Threaded or Immersion Assembly |
Cold Junction Compensation & 4-20 mA HART Loop Telemetry
The 51451326-503 pH probe sensor generates millivolt signals proportional to solution activity, which are transmitted to analytical transmitters supporting cold junction compensation and RTD temperature offsets over its 20 inch cable connection. Galvanic channel-to-channel isolation within the downstream Honeywell interface module decouples low-impedance electrode signals from high-voltage field ground potential shifts. This signal conditioning retains measurement linearity across multi-parameter transmitter loops communicating via the 4-20 mA HART loop protocol.
Frequently Asked Questions
Q: Can the 51451326-503 probe be installed in pressurized in-line piping?
A: Yes, the electrode body housing is designed for direct insertion into process piping via standard in-line mounting hardware or immersion mounting assemblies within rated process pressure bounds.
Q: Does the integrated 20 inch cable require external junction shielding?
A: The high-impedance coaxial wiring within the 20 inch cable must be terminated directly into a compatible analyzer or field junction box without removing factory shielding to avoid signal noise corruption.
Field Installation Guidelines
- Remove the protective wet storage cap from the glass bulb sensing element immediately prior to installation.
- Install the probe into the threaded process fitting using Teflon tape or appropriate thread sealant, ensuring a liquid-tight mechanical seal.
- Keep the sensing element oriented at least 15 degrees above the horizontal plane to prevent air bubble accumulation inside the glass bulb.
- Route the 20 inch integrated cable through grounded, isolated electrical conduit to shield the high-impedance millivolt signal from nearby power lines.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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