Chromium

Cr(III)/Cr(VI)

Applications

Drinking water
Industrial wastewater discharge limit monitoring or process optimization
Surface water

Description

Colorimetric analyzer for Cr(III) / Cr(VI) ions determination.

Method

The determination is based on the reaction of 1,5-diphenylcarbazide with Chromium(VI) in an acid medium. The absorbance intensity is proportional to the chromium concentration in the sample and is measured at 525 nm.

Reagents

Standard solutions

Features

Range (Ø 26 mm)	300 ppb
Range (Ø 16 mm)	1000 ppb
Range (with dilution)	50 ppm
Wavelength	525 nm
Number of reagents	2
Min. analysis time	6 minutes

Technical Specifications

Model	3S-CL
Sampling Mode	Batch, with freely settable frequency.
Sample	Pressure: Atmospheric Temperature: 5 ‐ 45°C (41 ‐ 113°F) Flow Rate: 80 to 500 mL/min Connection: 6 mm (¼-in.)
Drain	Pressure-free drain Connection: 12 mm (½-in.)
Input Streams	2
Cabinet Material	Epoxy-coated stainless steel AISI 304
Dimensions (H x W x D)	604 x 380 x 210 mm (23.6 x 14.8 x 8.2 in)
Weight	20 kg (44 lbs)
Power Supply	Input Voltage: 115 VAC,230 VAC,24 VDC Power consumption: max. 80 W
Output signals	2 x 4-20 mA analog outputs Modbus via RS485,Ethernet
Alarms	2 SPDT programmable voltage-free relays
Digital Input	None, Online, Start Extra, Skip Idle, Emergency Stop
Ambient Temperature	5 - 45 °C (41 - 113 °F)
Ambient Humidity	10 - 90 % RH
Protection Grade	IP54 (indoor only, outdoor use possible with external cabinet, not included)