Use

Searchpoint Optima Plus is an   advanced, Point-Infrared, flammable gas detector certified for use in   potentially explosive atmospheres

Measuring Range

0-100% LEL, wide selection of   Hydrocarbon gas and vapor calibrations. Different measuring ranges and   solvent

calibrations available for   specialist applications

Signal Output

4-20mA   autosensing sink or source

Inhibit

1-3mA (Default 2mA)

Warning

0-6mA (Default 3mA *)

Fault

0mA (HART® units adjustable   to 1mA)

Over Range

20-21.5mA (Default 21mA)

Digital Output

Optional Multidrop Modbus   RS485 (via DX100(M)), Optional HART® over 4-20mA output (HART® version 7)

Material

316 stainless steel

Weight

1.6kg

Accuracy

Optima Plus (Hydrocarbon)

Baseline < ±1% FSD, 50%   FSD <±2% FSD

Optima Plus (Ethylene)

Baseline < ±2% FSD, 50%   FSD <±3% FSD

Repeatability

< ±2% FSD at 50% FSD

Linearity

< 5% FSD

Response Time

T50 < 3 seconds, T90 <   4 seconds (methane)

Operational and Certified

-40°C to +65°C temperature   range

Long Term Stability

(as defined in

EN 60079-29-1)

Baseline

Methane 100 %LEL Range: ≤ ± 2 %FSD

Ethylene 100 %LEL Range: ≤ ± 4 %FSD

50 %FSD

Methane 100 %LEL Range: ≤ ± 4 %FSD

Ethylene 100 %LEL Range: ≤ ± 5 %FSD

Drift Over Temperature

Range (-40 °C to 65 °C)

Baseline

≤ ± 2 %FSD

50 %FSD

Methane 100 %LEL Range: ≤ ± 0.131 %FSD per °C

Ethylene 100 %LEL Range: ≤ ± 0.078 %FSD per °C

Variation with Pressure

0.1% (of reading) per mbar

Power Supply

18-32Vdc (24Vdc nom), <   4.5W max

Environmental Protection

IP 66 / 67

Diagnostics(and   Re-calibration)

Via certified Hand-held   Interrogator, or optional HART® communications

Safety Approvals

UL / CSA: Class 1, Div 1,   groups B, C, and D (-40°C to +65°C)

IECEx: Ex d IIC tb IIIC T86°C   (Tamb -40°C to +55°C) or T96°C (Tamb -40°C to +65°C) IP66/67

ATEX: BAS99ATEX2259X

II 2 GD Ex d IIC Gb Ex tb   IIIC Db

T96°C (Tamb -40°C to +65°C)

T86°C (Tamb -40°C to +55°C)

IP 66/67

Performance Approvals

Functional Safety

CSA C22.2 152., FM   ANSI/ISA-12.13.01., EN 60079-29-1 (BVS 03 ATEX G 016 X)

IEC61508 Safety Integrity   Level 2

EMC Compliance

Software

EN 50270:2006

EN 50271:2010