APS121 pH/ORP Sensor

Overview

Highly accurate with fast response times, the versatile 100 GP provides complete confidence in a wide range of general process applications including drinking water, municipal wastewater and cooling waters.

The 100 GP sensor provides:

Increased efficiency

• Propriety high performance glassware formulations provide the highest level of reliability and responsiveness
• Close-coupled temperature measurement ensures high accuracy even with rapid temperature changes

Cost-effective and dependable

• Enhanced double junction design with ion trap delays poisoning effects ensuring the sensor operates longer
• Large surface PTFE junction provides excellent stability and fouling resistance
• Robust PVDF ¾ inch NPT body provides superior mechanical and chemical resistance
• Each electrode is manufactured to the highest quality standards and provided with a calibration certificate

Modular design

• Universal ¾ inch NPT design for simplified mounting
• Available in a range of detached or integral cabling options

Data

Measurement range

pH 0 to 14 pH

Redox (ORP) –2000 to 2000 mV

Process temperature 

–5 to 60 °C (23 to 140 °F)

Pressure range

0 to 6 bar (90 psi) @ 25 °C (77 °F)

Recommended minimum sample conductivity

50 μS/cm

pH glass

High performance (S) glass (bullet)

High performance (S) glass (flat)

Low temperature (LT) glass

Redox (ORP)

Platinum

Reference system

Extended double junction Ag/AgCl design plus ion trap in gel matrix

Reference junction

Porous PTFE and Viton O-rings

Connection type

BNC + Molex

Tagged

VarioPin

Process connections

¾ inch NPT

Approvals, certification and safety

• CE Mark
• Covers EMC+LV directives (including latest version of EN61010)
• Regulation 31
• Drinking water approval: Complies to DWI Regulation 31(4)(b)
• Additional tests: BS6920 parts 2.2 and 2.4 on all wetted parts
• EMC
• Meets requirements of IEC61326 for an industrial environment
• CRN Approval
• Maximum allowable working pressure (MAWP): 5.58 bar (81 psi)
• Design temperature: -5 ⁰C to + 105 ⁰C (+23 ⁰F to +221 ⁰F)
• CRN number 0F22557
• MCERTS
• Certificate no. Sira MC220375/00