FCL201/FCL202 DPD-based portable colorimeter for free and total chlorine with ±5% accuracy. Ideal for rapid testing in drinking water

DPD-based portable colorimeter for free and total chlorine with ±5% accuracy. Ideal for rapid testing in drinking water, pools, and industrial circulating water systems.
✓ Transparent sourcing — factory-direct price, no markup
Request a Quote WhatsApp Us

Product Specifications

ModelFCL202/FCL201
Measuring Range0~3.00mg/L(FCL202);0~10.00mg/L(FCL201)
Light SourceLED
Wavelength525nm
Screen DisplayLCD with backlight
Measurement ModeConcentration
Reading Division0.01mg/L
Test Accuracy≤±5%
Sample Vessels10ml round
Power Supply4 × AAA batteries
Operating Environment0~40°C, relative humidity ≤90%
Dimensions159×68×35mm
WeightApprox. 220g (with battery)
ApplicationsWater treatment, environmental monitoring, laboratories, food & beverage, aquaculture
CertificationsManufactured under ISO 9001 QMS · CE/RoHS/FDA compliance varies by model (certificates available upon request)

概述

FCL201 与 FCL202 是基于 DPD 法的便携式余氯比色计。FCL201 覆盖游离氯与总氯,量程至 10.00 mg/L;FCL202 收窄到 0–3.00 mg/L,面向饮用水常见的低值区间;两者均以 525 nm LED 光源测量,精度 ≤±5%。

测量结果以 mg/L 浓度直接在背光 LCD 上读出,分辨率 0.01 mg/L。每次测试使用 10 ml 圆形比色瓶,主机由 4 节 AAA 电池供电,机身 159 × 68 × 35 mm、重约 220 g——适合泳池边、水厂与现场巡检的口袋级套装。

应用场景

选型建议

  1. DPD 反应显色:请在方法的稳定窗口内完成读数,每次测试使用新鲜 10 ml 样品,避免褪色误差。
  2. 按量程选型:饮用水余氯等低位检测选 FCL202(0–3.00 mg/L);冲击投加、工艺水等液位更高或波动大的场合选 FCL201(0–10.00 mg/L)。
  3. 加样前先用样品润洗比色瓶,并保持瓶外洁净干燥——玻壁上的指纹与水珠会影响光路。

常见问题

DPD 是什么?

DPD(N,N-二乙基对苯二胺)是一种遇氯呈粉红色的试剂;颜色深浅与氯含量成正比,由仪表在 525 nm 波长读取。

游离氯与总氯有何区别?

游离氯是测试当下有效的消毒剂;总氯是游离氯加上与氨、有机物反应生成的化合氯。DPD 法直接读取游离氯,加入总氯试剂步骤后再读总氯。

该选哪个型号?

饮用水余氯等低位检测选 FCL202(量程 0–3.00 mg/L);冲击投加或工艺水等更高、波动更大的场合,FCL201 可测至 10.00 mg/L。

工作条件如何?

主机由 4 节 AAA 电池供电,工作温度 0–40 °C、相对湿度 ≤90%,测试使用 10 ml 圆形比色瓶。

Transparent Sourcing, Every Order

This product is sourced factory-direct from a certified Chinese manufacturer. You pay the factory price — no markup. Our income comes from the export tax rebate, not from your bill.

Request a Quote