EZ7900 Toxicity Analyzer
500.00৳
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Online, automatic respirometry for early warning of toxicity in wastewater treatment plants
Early Warning System against calamities
The EZ7900 Online Toxicity Analyser is able to detect and measure waste water streams that present an acute or chronic toxicity to the biomass of a water treatment plant. This allows operators to take corrective measures to protect the viability of the activated sludge.
Representative measurements on fresh sludge
Measurements are carried out on real sludge freshly sampled from the treatment plant by means of a self-cleaning sampling-filtration system (option). This unique approach has the following advantages: dynamic changes in biomass viability are immediately detected, while sample temperature and pH in the analysis vessel reflects those of the treatment plant.
The EZ7900 Series combine a unique, field-proven respirometric analyzer design with a robust sampling-filtration system, assuring detection of toxic compounds or shock loads in an early stage:
– Detection of acute and chronic toxicity on activated sludge
– Measurement of the respiration rate by means of a single dissolved oxygen (DO) sensor
– Smart automatic features
– Standard 4 – 20 mA signal output with alarm processing
– Communication ports supporting connectivity to Modbus
– Multiple stream analysis
There are many additional options available. Please contact Hach for more details.
Applications:
- Municipal Water
- Pre-Treatment
Specifications
Technical Attributes
| Alarm | 1 x malfunctioning, 4 x user-configurable, max. 24 VDC/0.5 A, potential free contacts |
| Ambient Temperature | 10 – 30 °C ±4 °C deviation at 5 – 95% relative humidity (non-condensing) |
| Analog Outputs | Active 4 – 20 mA max. 500 Ohm load, standard 1, max. 8 (option) |
| Automatic cleaning | Yes |
| Calibration | Automatic; standard at every analysis cycle |
| Certifications | CE compliant / ETL certified |
| Cycle Time | 10 – 15 minutes |
| Demineralized Water | N.A. |
| Digital Outputs | Optional: Modbus (TCP/IP, RS485) |
| Dimensions (H x W x D) | 690 mm x 465 mm x 330 mm |
| Drain | Atmospheric pressure, vented, min. Ø 64 mm |
| Earth Connection | Dry and clean earth pole with low impedance (< 1 Ohm) using an earth cable of > 2.5 mm² |
| Instrument Air | Dry and oil free according to ISA-S7.0.01-1996 quality standard for instrument air |
| Interferences | N.A. |
| Lower Limit of Detection (LOD) | N.A. |
| Material | Hinged part: Thermoform ABS, door: PMMA Wall section: Galvanized steel, powder coated |
| Measurement Method | Respirometry |
| Number of sample streams | 1, 2, or 4 |
| Parameter | Toxicity; respiration rate |
| Power | 100 – 240 VAC, 50/60 Hz Max. power consumption: 120 VA |
| Precision | Better than 5% full scale range for standard test solutions |
| Protection Class | Analyzer cabinet: IP44 / Panel PC: IP65 |
| Range | 0 – 100 % inhibition |
| Range | 0 – 100 % inhibition |
| Reagent Requirements | Keep between 10 – 30 °C (50 – 86 °F) |
| Sample Flow Rate | 100 – 300 mL/min |
| Sample Pressure | By external overflow vessel |
| Sample Quality | Maximum particle size 500 µm, < 0.1 g/L Most applications require the use of a dual EZ9110 + EZ9120 sampling/filtration system. |
| Sample Temperature | 10 – 30 °C (50 – 86 °F) |
| Validation | Automatic; frequency freely programmable |
| Warranty | 12 months |
| Weight | 25 kg (55 lbs.) |
| What’s included? | EZ7900 Toxicity Analyzer, Instruction Manual, 1 x Double Bit Door Key, 1 x Mounting Brackets and empty Containers for Reagents with Fittings |
Shipping Information
Out Of Dhaka: 1–3 working days for most locations within Bangladesh and cost only ৳120 TAKA.
Know more details.
Return Policy
You may return items purchased from Meter BD Shop within 7 days of receiving the product.
To be eligible for a return, the product must meet the following conditions:
1. Unused, 2. In the original packaging & 3. Proof of purchase.
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