What is the warranty and after-sales service?

Warranty and after-sales service are provided for this product.

Can the alarm hysteresis be adjusted?

Yes, the hysteresis for high and low alarm relays can be arbitrarily regulated within 0-5.00mg/L.

Online Residual Chlorine Meter and Sensor

Name: Online Residual Chlorine Meter and Sensor
Brand: Shanghai Boqu Instrument Co., Ltd.
SKU: 840427225

Shanghai, ChinaShanghai Boqu Instrument Co., Ltd.

US$700.00

1-9 Sets

US$680.00

10+ Sets

Sample price:US$700.00/set.Request sample

Product profile

Customization

Available

After-sales Service

Provided

Warranty

Provided

Model NO.

YLG2058

Alarm Relays

220V,7A

pH

0-14pH

pH Value

0 - 14.00pH

Temperature

0- 99.9 ℃

Residual Chlorine

± 2% or ± 0.035mg / L

Hocl

± 2% or ± 0.035mg / L

Minimum Detection Limit

0.01mg / L

Isolated Current Output

4~20 Ma

High and Low Alarm Relays

AC220V, 7A

 The Data Storage Capacity

1 Month (1 Point/5 Min

Transport Package

Carton Box

Specification

146*146*108mm

Trademark

BOQU

Origin

China(Mainland)

HS Code

9027809900

Production Capacity

100sets/Week

Key features

Multi-Parameter Monitoring: Simultaneously measures residual chlorine, pH, and temperature with high precision.

High Accuracy & Resolution: Resolution of 0.01mg/L for chlorine and 0.01pH for pH value ensures precise data.

Intelligent Operation: Features English menu, automatic temperature compensation, and self-checking functions.

Strong Interference Immunity: Adopts optoelectronic isolating technology for stable long-distance transmission.

Adjustable Alarm System: High and low alarm relays with adjustable hysteresis for customizable safety alerts.

CE Certified Quality: Product holds CE certification, ensuring compliance with international standards.

Flexible Communication: Optional RS485 interface allows convenient computer monitoring and data communication.

Durable IP65 Protection: Secondary instrument features IP65 protection grade for reliable industrial use.

Company profile

Shanghai Boqu Instrument Co., Ltd.

Shanghai, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2014-01-06 CertifiedNearest Port: Shanghai PortAverage Response Time: ≤8.82h 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.