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Analog pH ORP Meter for Continuous Water Quality Monitoring RS485 4-20mA Output
US$219.00
1-4 Pieces
US$209.00
5-9 Pieces
US$199.00
10+ Pieces
Product profile
Customization
AvailableAfter-sales Service
ProvidedWarranty
ProvidedModel NO.
PHG-2081ProMeasuring Range
-2.00pH to +16.00 pH;-2000mv to +2000mvResolution
0.01pH;1mvTemp. Compensation
PT 1000/Ntc10KpH/ORP Current Output1
Isolated, 4 to 20mA Output, Max. Load 500ΩProtocol
RS485Baud Rate
9600/19200/38400Maximum Relay Contacts Capacity
5A/250VAC, 5A/30VDCWaterproof Grade
IP65Power Supply
From 90 to 260 VAC, Power Consumption < 4 Watts, 5Material
ABSInstallation
Panel/Wall/Pipe InstallationTransport Package
Carton BoxSpecification
144mmx144mmx104mmTrademark
BOQUOrigin
Shanghai, ChinaHS Code
90278099Production Capacity
1500PCS/MonthKey features
Wide Measuring Range: pH: -2.00 to +16.00, ORP: -2000 to +2000mV with 0.01pH/1mV resolution.
RS485 Communication: Supports Modbus RTU protocol with selectable baud rates: 9600/19200/38400.
IP65 Waterproof Design: Durable ABS housing suitable for harsh industrial environments.
OEM/ODM Support: Manufacturer offers full customization services with 20+ years R&D experience.
Relay Control Capability: High capacity relay contacts: 5A/250VAC or 5A/30VDC for process control.
Multi-Installation Options: Flexible mounting for panel, wall, or pipe installation.
Company profile

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2014-01-06 CertifiedNearest Port: Shanghai PortAverage Response Time: ≤6.50h CertifiedTerms of Payment: LC, T/T, D/P, etc.
AI-Powered supplier vetting
SummaryShanghai Boqu Instrument Co., Ltd. is identified as a China-based manufacturer established in 2007, with 111 employees and operations in Pudong, Shanghai. It produces electrochemical instrumentation and electrodes, including pH, conductivity, dissolved oxygen, turbidity, ion concentration, and flow-measurement products. The supplier reports ISO9001:2015 and ISO14001:2015 certifications, two production lines, a 1,368 m² manufacturing plant, ten years of R&D engineer experience, and six to ten quality-control staff. Its export activity began in 2014, with exports representing 21%–30% of sales. The company states that it provides after-sales service and uses advanced technology and equipment, but the slices do not provide measurable service performance, innovation outputs, customization evidence, or detailed customer case results.
Supplier typeThe supplier is classified as a manufacturer and is described as a professional manufacturer of electrochemical instrumentation and electrodes with R&D, production, and sales capabilities. Its registered address and factory location are both in Pudong, Shanghai, China.
CertificationsThe supplier reports holding ISO9001:2015 and ISO14001:2015 management-system certificates. These explicitly support quality-management and environmental-management certification, although certificate scope or validity details are not provided.
After-Sales capabilityThe company explicitly states that it focuses on after-sales service and offers “perfect after-sales service,” and claims this has helped earn customer and partner trust. However, no service-team size, response-time data, warranty terms, or service records are provided.
Production capacityThe supplier reports a manufacturing plant of 1,368 m², two production lines, six to ten quality-control staff, and ten years of R&D engineer experience. Its product range covers multiple electrochemical instruments and sensors, and it is identified as the manufacturer of listed BOQU products, providing explicit evidence of production capability.
Product Q&A
Q:What is the measuring range for pH and ORP?
A:
The pH range is -2.00 to +16.00 pH, and the ORP range is -2000mV to +2000mV.
Q:Does the meter support RS485 communication?
A:
Yes, it features an RS485 interface compatible with the Modbus RTU protocol for host computer connection.
Q:Is the device suitable for harsh environments?
A:
Yes, it has an IP65 waterproof grade and is made of durable ABS material.
Q:Can the product be customized?
A:
Yes, the manufacturer supports OEM and ODM services with over 20 years of R&D experience.
Q:What are the power supply requirements?
A:
It operates on 90 to 260 VAC with a power consumption of less than 4 watts.
Send Inquiry
*To:
Shanghai Boqu Instrument Co., Ltd.
Shanghai Boqu Instrument Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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