OZONE ANALYZER BMT 964 Manual, Rev. 04/2021
32
15
Specifications
measurement principle
dual-beam UV photometer (254 nm), no moving parts
MTBF
instrument incl. UV lamp 65,000 h, excl. 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
concentration ranges
50, 100, 200, 300, 400, 500, 600 g/Nm
3
, selectable units %wt/wt &
ppm
v
optional ranges
2, 5, 10, 20 g/Nm
3
, selectable units %wt/wt and ppm
v
accuracy
after zeroing the max. error is the sum:
0.4% of measu 0.1% of scale
repeatability error
0.2 % of measurement
response time
0.03 s (analog output), 0.3 s (display)
zero drift
typ. 0.2 % of range per day, after warm-up, non-cumulative
proof pressure
1 bar above pressure range
ambient temperature
0 - 50°C (non-condensing)
materials in contact
with ozone
quartz (cuvette windows), Al
2
O
3
(cuvette), FFPM (window seals),
PTFE (tubing), stainless steel (fittings, cuvette spacer)
gas ports
for PTFE tubing 3 x 5 mm (1/8" x 3/16"), opt. 1/8" or 1/4" Swagelok,
or 4 x 6 mm PTFE. Built-in sample gas filter is standard
recommended flow rate 0.1 to 1 l/min typical
pressure drop
approx. 3 mbar at 0.5 l/min (with sample gas filter)
temperature compens.
is standard
pressure compensation for ozone measurement at an arbitrary systemic pressure,
with built-in cuvette pressure transducer,
abs. pressure ranges 1.15 (optional up to 4.0 bara in steps of 0.5)
pressure units selectable: bar, psi, Torr, MPa
signal outputs
concentration 4 - 20 mA (isolated, active)
concentration 0 - 10 V (isolated)
concentration alarms
High Alarm, Low Alarm, latching, not latching
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
Purge Control
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, Over-
pressure
serial interface
RS-232, bidirectional, 2400 - 38400 Baud,
isolated (RS-232 GND connected to analog GND)
automatic zeroing
with opt. external or internal purge pump and solenoid valve
(e.g. BMT Purge Unit)
software
BMT 964 Link, instrument configuration and readout of Event- and
Error Logs on a Windows PC
power
wide range input: 100 - 240 VAC, 50/60 Hz, 15 VA
optional: 12 - 36 VDC, 15 W
dimensions (W x H x D)
144 x 72 x 230 mm, DIN 43 700 (ranges 2 and 5g/Nm
3
: 144x144x230)
panel cut-out (W x H)
139 x 67 mm
weight
1.5 kg
