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Technical data
Ref. B210823EN-A ©Vaisala 2009
This material is subject to copyright protection, with all
copyrights retained by Vaisala and its individual partners. All
rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifications — technical included — are subject
to change without notice.
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
Performance
Measurement range 0 ... 100 % O
2
Accuracy (including noise, linearity and
repeatability) ±0.2 % O
2
Temperature range over T range ±2 % of reading
Stability ±1 % of reading/yr
Zero drift ±0.1 % O
2/
yr
Response time of measurement 3 s
Diffusion limited response in still air T
63
/T
90
without filters 10 s / 20 s
with stainless steel mesh filter 10 s / 25 s
with stainless steel mesh filter and
PTFE filters 30 s / 70 s
Pressure dependence without pressure
compensation
0.8 ... 1.2 bar -2 % of reading
1.2 ... 1.4 bar -5 % of reading
Accuracy of pressure compensation ±0.25 % of reading
Background gas effects for CO
2
and H
2
O uncompensated
< 1% of reading for <6 vol -% CO
2
< 1% of reading for gas dew point < 30 ˚C
Accuracy of background gas compensation
0 ... 50 vol-% CO
2
±-0.5 % of reading
0 ... 300 g/m
3
H
2
O (T
d
=80 ˚C) ±1 % of reading
Classification
OMT364 CLASSIFICATIONS FOR THE TRANSMITTER
USA and Canada FM, Non-incendive for Class I,
Division 2, Groups A, B, C, and D.
T
a
= -20 ˚C to +60 ˚C
OMT364 CLASSIFICATIONS FOR THE PROBE
USA and Canada FM, Suitable for Class I, Division 1,
Groups A, B, C, and D.
T
a
= -20 ˚C to +80 ˚C
Inputs and outputs
Power supply
input range 11 ... 36 VDC
Power consumption
maximum 6W
typical 3W
Analog output 0/4 ... 20 mA sourcing
maximum load 500
Serial output (2-wire, non-isolated) RS-485
Alarm/control relay 30 VAC/60 VDC
Operating environment
Operating temperature range for
probe (in-line installation) -20 ... +80 ˚C
electronics (housing) (Kalrez® seals)
-20 ... +60 ˚C
transmitter (ambient gas
measurement) -20 ... +60 ˚C
Storage temperature range -55 ... +80 ˚C
Operating pressure range 0.8 ... 1.4 bar
Maximum pressure range for probe up to 10 bar
Compliance
IEC(EN)-61326 Electrical equipment for measurement,
control and laboratory use. EMC requirements.
Laser safety Class 1 laser product
Mechanics
Housing material G-AlSI10 Mg (DIN 1725)
Probe material AISI 316
Housing classification IP66
Weight, transmitter and probe 2.2 kg
Weight, sample cell 2.6 kg
Mounting flance diameter 97 mm
Cable bushing Cable gland M20 x 1.5
Stainless steel mesh filter openings ø 310 m
Wetted materials
AISI 316, Kalrez
®
, PTFE (optional),
SiN, MgF
2
Options and accessories
Hydrophobic PTFE filter, pore size 8 m with
Kalrez
®
O-rings 217056
1/2” NPT conduit fitting 217917
Sample cell with wall-mounting bracket
gas fittings for O.D. 6 mm tube
volume 260 m
3
T63 response time with 1 l/min
sample flow and mesh filter, 18 s
with Kalrez
®
O-rings 216619
OMT364 Oxygen Transmitter for
Hazardous Areas
The Vaisala SPECTRACAP
®
Oxygen
Transmitter OMT364 is designed
for oxygen monitoring in moist and
aggressive process gases.
Laser based measurement
The OMT364 incorporates a
compact tunable diode laser (TDL)
gas spectrometer built in the
measurement probe. This optical
measurement technology is well
known for unmatched stability
and robustness. The patented
SPECTRACAP
®
sensor offers uniquely
TDL technology in a compact probe
suitable for eld use.
FM Approved OMT364 for
Hazardous Areas
The non-incendive OMT364
transmitter is permitted for use in
Class I, Division 2 of the NEC
®
500
area classication according to FM
Approvals SM . The probe of the
The Vaisala SPECTRACAP
®
Oxygen Transmitter OMT364 for hazardous areas.
instrument can be installed in areas
that are classied as Class I, Division
1 or 2.
Direct installation
In many applications, the OMT364
can be ange-mounted directly into
a process. No sampling or sample
conditioning equipment is needed.
This feature provides real time
measurement data without sampling
or sample switching delays.
Sampling cell installation
An optional sampling cell is
available for processes with high
temperatures, elevated pressures
or extremely difcult mechanical
conditions. Due to the robustness of
the SPECTRACAP
®
sensor and its low
sensitivity to gas ow and pressure
variations, the sampling system is
simple and it can be installed near
the sampling point.
Features/Benefits
▪
Minimizes need for sample
conditioning equipment
▪
In-situ probe or sampling cell
▪
Tolerates aggressive chemicals
▪
Tolerates excessive amounts of
moisture even in liquid form
▪
Low maintenance
▪
Calibration interval 12 months
▪
+"03.!ŏ* ŏ'!5, ŏ1/!.ŏ
interfaces and an LCD display
▪
Example applications:
fermentation, composting
process monitoring, inerting
processes and flare gas
recovery
- HUMIDITY / DEW POINT / 1
- Vaisala – at your service 3
- Building Automation 5
- Cleanrooms and Chambers 5
- Humidity 7
- 37.5 (1.48) 9
- 78.5 (3.09) 9
- 98.5 (3.88) 9
- Ø 12 (0.47) 9
- 120 (4.72) 10
- 170 (6.69) 10
- 41 (1.61) 10
- Duct installation kit 11
- Temperature Transmitters 12
- Transmitter 15
- Indoor Applications 17
- Chambers 22
- Vaisala INTERCAP 23
- Humidity and Temperature 23
- Probe HMP60 23
- Vaisala HUMICAP 24
- Probe HMP110 24
- HMI41 Indicator and 26
- HMP46 High Temperature Probe 26
- Performance 29
- Interchangeable Probe 29
- Available Options 29
- Technical Data 30
- HMK15 Humidity Calibrator 31
- DTR500 Solar Radiation and 33
- Precipitation Shields 33
- The Vaisala HUMICAP 36
- Transmitter Series HMW80 37
- HVAC Applications 39
- WITH OPTIONAL CURRENT MODULE 40
- **0 … 20 mA (R 40
- 1/8"-27 NPT 41
- Ensure dry 43
- OEM Applications 46
- Transmitter Series for Oil 51
- Moisture in Oil 51
- Prevent it 53
- Transmitter for Oil 54
- 0 ... 2 % 57
- Demanding OEM Applications 59
- GMM111 Carbon Dioxide Module 60
- Demand-controlled Ventilation 62
- GMM20W Carbon Dioxide Module 65
- GML20 and GML20T 66
- Process Measurements 67
- Humidity and 68
- Measurement 68
- Environments 68
- Hazardous Areas 69
- PTU300 Models 70
- Barometric Pressure 70
- Reliable and accurate 72
- HVAC solutions 72
- Take the lab to the field 74
- Standard PTB330TS 75
- PTB210 Digital Barometer 76
- Wind Measurement 81
- Vaisala Service Oering 82
- Vaisala Service Offering 82
- Your Warranty 83
- PRICE LIST 84
- DMT132 Dewpoint Transmitter 85
- Datasheet – front 85
- Vaisala Filters 89
- Vaisala Filters continued 89
- Order Guides 90
- Note: The Universal AC 91
- For high temperatures 92
- For high humidities 93
- For wall mounting 95
- For general use 96
- With Two Standard Chambers 101
- For Pressurized Processes 103
- DMT345 Dewpoint Transmitter 104
- DMT152 Dewpoint Transmitter 105
- DMT242 Dewpoint Transmitte 106
- For pressurized pipelines 108
- GMT221 and GMT222 CO 109
- Transmitters 109
- OMT355 Oxygen Transmitter 110
- 1 Transmitter type 111
- (-40...+140 °F) 112
- (-4...+140 °F) 112
- (+32...+140 °F) 112
- Order Guide 114
- Features/Benefits 115
- Technical data 116
- 3 Cable length 1.0 m 117
- PTB110 Barometer 118
- WXT520 Weather Transmitter 119
- Vaisala Contact Information 121
- ACCURATE 122
- For more information, visit 123
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