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Online pH/ORP Transmitter with Two Relays

Housed in an enhanced ABS enclosure, this online controller supports precise, customizable 3-point pH and 2-point ORP calibration alongside dual SPST relays for automatic water quality threshold alarms and clean control.

Model： APX2-C1
Parameters： pH / ORP
Delivery time： 2-5 weeks
MOQ： 1

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Overview
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Optional Parts & Accessories

Wall Mounting Accessories
- Model: F01-144
- Material: ABS
Panel Mounting Accessories
- Model: F02-144
- Material: 304 stainless steel
Rain shield installation kit
- Model: RCP-01
- Material: 304 stainless steel
Pipe installation kit
- Model: F03-144
- Material: 304 stainless steel，ABS

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Controller Model	APX2-C1
Measuring Parameter	pH/ORP
Measuring Principle	pH: Glass pH electrode (Hydrogen ion concentration index) ORP: platinum or gold electrodes (Redox potential)
Measuring Range	pH: 0～14 pH ORP: -2000mV～+2000mV Temp: -10～150℃
Resolution	pH: 0.01 pH ORP: 1 mV Temp: 0.1°C
Accuracy	pH: ±0.02 pH ORP: ±2 mV
Potential Stability	0.05% FS every 24 hours without accumulation
Potential Repeatability	±0.1%
Temperature Compensation	Automatic or manual (NTC10K/PT1000 @customized)
Relay Output	Two SPST relays, Max. load 3A/250VAC, set high/low alarm, temp. or clean control
Current Output	1-channel 0/4~20 mA, Max. load 1000Ω, supports long-line calibration
Language	English
Display	128 x 64 3.2-inch graphic dot matrix LCD
Calibration Method	pH: 3-points, ORP: 2-points, the calibration points can be set freely supports on-site offset correction
Protection Grade	IP66
Enclosure Material	Enhanced ABS
Dimension	144mm x 144mm x 120mm (Hole size 138mm x 138mm)
Power Supply	AC: 100~240V 50/60Hz or DC:18~36V
Work Temperature	0~60℃, RH<95%, non-condensing
Storage Temperature	-20~70℃, RH<55%, non-condensing
Installation	Wall mounting, pipe clamp, panel mounting
Power Consumption	Max. 5W

Online pH/ORP Transmitter with Two Relays

Overview

Two Configurable Relays

1-channel 4‑20 mA Output

Large‑size Housing

Applicable Scenarios

Technical Data

User Manual

Optional Parts & Accessories

Wall Mounting Accessories

Online pH/ORP Transmitter with Two Relays

Overview

Two Configurable Relays

1-channel 4‑20 mA Output

Large‑size Housing

Applicable Scenarios

Technical Data

User Manual

Optional Parts & Accessories

Wall Mounting Accessories

Related Productions

1-channel 4‑20 mA Output