Ozone Analyzer BMT 964 C

Summary

Product identification

• Product Name: OZONE ANALYZER BMT 964 C
• Description: Wall-mount version of the standard BMT 964 for hostile environments, housed in a splash-proof IP 65 (NEMA 4X) aluminum cabinet. Designed for fully automatic stand-alone operation.
• Measurement Principle: Dual-beam UV photometer (254 nm), no moving parts.

Features

• Dual beam UV photometer
• Long-life mercury lamp
• Warranty: 3 years (5 years on UV lamp)
• High accuracy: error less than 0.5%
• Pressure and temperature compensated
• Ranges from 10 to 600 g/Nm³
• Built-in sample gas filter
• Built-in purge unit for automatic zeroing
• Failure warnings: lamp low, cuvette dirty, overrange, summary error
• Key functions programmable via front panel or Windows PC
• Display units: g/Nm³, %wt/wt, or ppmv
• High and low limit alarms
• Automatic zeroing with adjustable interval (1 to 99 hours)
• Pressure readout units: bar, psi, Torr, or MPa
• Outputs: 4-20mA and 0-10V isolated
• Interface: RS-232 (bidirectional, isolated)

Applications

• Ozone measurement in hostile environments
• Monitoring of ozone generator output
• Monitoring of residual ozone after a process
• Potable water treatment
• Wastewater treatment
• Industrial ozone processes

Specifications

General

• MTBF:
  • Instrument including UV lamp: 65,000 h
  • Instrument excluding UV lamp: 120,000 h
• UV Lamp: Low pressure mercury lamp, long life design, burnt-in for 300 h.
• Display: 16 character alphanumeric backlit LCD.
• Software: BMT 964 Link for instrument configuration and readout of Event & Error Logs (Windows).
• Power: 100 - 240 VAC, 35 VA.
• Dimensions (W x H x D): 300 x 200 x 120 mm.
• Weight: 3.9 kg.
• Compliance: CE-marked (EMC & safety), cTUVus NRTL-listed, USCG 46 CFR 612.060-30.

Measurement

• Concentration Ranges: Selectable: 50, 100, 200, 300, 400, 500, 600 g/Nm³. Optional: 10, 20 g/Nm³.
• Selectable Units: g/Nm³, %wt/wt, ppmv.
• Accuracy: Max. error after zeroing is the sum of 0.4% of measurement + 0.1% of scale.
• Repeatability Error: 0.2 % of measurement.
• Response Time: 0.03 s (analog output), 0.3 s (display).
• Zero Drift: Typically 0.2% of range per day, after warm-up, non-cumulative.

Operating Limits

• Max. Inlet Pressure: 2.5 bar g.
• Max. Outlet Pressure: 1.15 bar abs.
• Ambient Temperature: 0 - 50°C (non-condensing).

Materials in Contact with Ozone

• Quartz (cuvette windows)
• Al₂O₃ (cuvette)
• FFPM (window seals)
• PTFE (tubing)
• Stainless steel (fittings, cuvette spacer)

Hydraulic / Mechanical

• Inlet Gas Port: For 3x5 mm (1/8" x 3/16") tubing, optional 4x6 mm, or 1/8'' or 1/4" or 6mm Swagelok.
• Built-in Sample Gas Filter: Standard.
• Outlet Gas Port: For 4x6 mm tubing.
• Recommended Flow Rate: 0.1 to 1 l/min typical.
• Pressure Drop: Approx. 5 mbar at 0.5 l/min (throttle valve fully open).
• Temperature Compensation: Standard.
• Pressure Compensation: With built-in cuvette pressure transducer. Units selectable: bar, psi, Torr, MPa.

Electrical

• Signal Outputs:
  • Concentration: 4 - 20 mA (isolated, active).
  • Concentration: 0 - 10 V (isolated).
• Control Input: Set to zero (24 V, 18 mA, isolated).
• Control Outputs (Relay Contacts, 28 V, 0.5 A, isolated):
  • Lamp Low
  • Cuvette Dirty
  • High Alarm
  • Low Alarm
• Error Handling:
  • Error Relay: 30 V, 1 A, summarizing instrument failures.
  • Warnings and Errors: Lamp Low Warning, Lamp Low Error, Lamp Off Error, Cuvette Dirty Warning, Cuvette Dirty Error, Overrange, Overpressure.
• Serial Interface: RS-232, bidirectional, isolated, 2400 - 38400 Baud.

Automatic Zeroing

• System: Internal purge pump and solenoid valve.
• Operation: Automatically purges the cuvette with clean, filtered air and zeroes the analyser. Zeroing interval selectable between 1 and 99 hours.

Cabinet and Mounting

• Cabinet Material: Powder coated aluminum.
• Dimensions with Door Open (approx.): 480 x 240 x 420 mm (W x H x D).
• Mounting: Wall-mountable using four rear brackets (mounting holes 6 mm ID, spaced 240 x 225 mm, W x H).
• Sample Gas Connection: 3x5 mm (1/8" x 3/16") PTFE tubing recommended; also available with 1/8'' or 1/4" Swagelok fittings.

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror