OZONE MONITOR BMT 932 Manual, Rev. 02/2021
42
22 Specifications
Measurement principle Dual-beam UV photometer (254 nm)
UV lamp Low pressure mercury lamp, long life design, burnt-in for 300 h
Display 2x20 character alphanumeric backlit LCD
Concentration range 1, 2, 5, 10, 20, 50, 100, 250 ppm
v
Selectable units ppm
v
and µg/Nm
3
Noise ±0.001 ppm
Min. detectable Conc. 0.002 ppm
Accuracy ± 1 %, traceable to NIST
Response time 20 s (0 – 95 %)
Temperature compensation Standard
Pressure compensation Standard
Flow rate 1 l/min, automatically controlled by an electronic flow meter
Sample ports 1, 3 or 6 (please specify), automatic and manual selection of sample port
Scrubber life > 8 years (safety monitor operation)
Threshold alarms Two, adjustable for each sample port. Three EMO circuits. Threshold alarm relays for
each sample port (if optional Relay Box has been ordered)
Error relay Indicating any instrument failure, including
Lamp low (easy lamp replacement)
Low flow
Scrubber failure (tested for every 24 h, reserve scrubber takes over automatically)
Warmup
Gas ports Compresssion type for ¼ " or 4x6mm FEP tubing
Cabinet version: ¼" OD only
Safety catalyst for off gas included
Signal outputs Concentration 4-20 mA (isolated, active)
Concentration 0-1 V, 0-10 V (isolated)
Sample port identification
EMO
Control output Lamp low (relay contact, 30 V, 1 A)
Digital interface RS-232, isolated, showing concentration, alarms, errors. Provides connection to Win-
dows software BMT 932 Link
Accessories included One filter holder with mounting fitting per channel, 200 filter inserts, tweezers for filter
inserts, screw driver for set points, number stickers & bracelets, connectors, spare fuses,
mounting screws & nylon washers
Spare parts kit (optional)
UV lamp
Scrubber
Additional filter holder per sample port
200 filter inserts
Warmup time 7 min. max., 4 min. typical
Power Universal line voltage: 100 – 240 VAC, 35 VA, 50/60 Hz
optional: 18-36 VDC, 25 W
Ambient temperature 0 - 45 °C (non-condensing)
Dimensions (H x D)
(W x H x D)
132 x 300 mm (19 rack mount)
357 x 440 x 133 mm (wall mount BMT 932 C)
Weight 9 kg (19" rack mount)
less than 7 kg (wall mount BMT 932 C)
Compliance CE-marked (EMC and safety), cTUVus NRTL-listed
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