Tendring Pacific

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PBI-Dansensor's range of oxygen indicators for both portable and on-line industrial applications. Measuring ranges from 1ppm upwards. The oxygen sensors are developed and produced by PBI-Dansensor and are available as stand alone sensor for OEM use. Also available in a range of oxygen meters for precision welding and in monitoring equipment for industrial applications

The Industrial Sensor Module (ISM-3) measures oxygen in inert gases and CO₂ and targets applications like nitrogen generators.

ISM-3 is a digitally controlled analyser, featuring user programmable gas alarms and complete self-diagnostics with system alarms. An extremely versatile analyser with very low maintenance requirements and high reliability.

ISM-3I

ISM-3i features separate sensor and display boxes with user interface for easy panel mounting. This allows for mounting of the small display unit where convenient and the sensor unit can be placed out of the way or as close as possible to the point of gas sampling.

ISM-3 is available in the following versions:

• ISM-3i: Version with separate panel mount display

• ISM-3x: Stand alone version/version with integrated display

Benefits / features

• High reliability and accuracy – better than +/-1% of reading
• Low maintenance
• Large measuring range – 1ppm – 100%, with automatic range selection
• Self diagnostics – monitoring of vital parameters with alarm output
• 2 oxygen concentration alarms
• Different positioning options for adjustment to the field of the analyser applications
• Sample gas supply by gas pressure or internal pump (specific instrument versions)

Optional features

• Current output signal 0/4 – 20 mA
• Voltage output signal 0/2 – 10 Volt
• Built-in sample pump

Technical specifications
Sensor

• O2   sensor: Ceramic, solid state sensor
• Operation temperature: 727 °C
• Heating-up time: 10 min. – full specs. after 20 min.
• Calibration intervals: 12 months
• Calibration points: Atmospheric air plus 4 optional points, 1ppm – 100% O₂
• Reference gas: Atmospheric air
• Sensor response time: 50 msecs.
• System response time: T99 < 5 secs. From 100 ppm to 1000 ppm
• Accuracy: Better than +/-1% of displayed value in calibrated range, +/- 1 digit
• Sensor flow: 125 ml/min.
• Sample gas flow sensor: Monitors correct gas flow through sensor
• Sample gas supply: Available in different pressure ranges from 2 – 10 bar; pump version also available
• User programming: Menu operated for setting up and diagnosis
• Display: 4 digit, red LED display
• Keyboard: 4 front keys
• Self-diagnostics: Monitoring vital system parameters
• Alarms: Two O₂ concentration alarm settings, system fault alarm (bad gas flow, sensor error, etc.)
• Alarm output: Max. 48 V, 1 A (Common, N.O. or N.C.)
• Current output: 0/4 – 20 mA or (optional) 0/2 – 10 Volt, scale can be defined by operator, i.e. 0-1%, 0-100 ppm
• Signal input: 10 – 32 VDC external measuring control signal. Consumption 10 mA for Start/Stop of the analyser
• Power: 230 VAC (115 VAC) +/- 10%, 50 – 60 Hz
• Consumption: Max. 70 VA
• Fuses: 0.63 AT for 230 VAC (1.6 AT for 115 VAC)
• Storage:-20 °C to + 45 °C, less than 75% RH
• Size ISM-3i: Cabinet: 125 x 185 x 125 mm (H x W x D) Display: 96 x 96 x 20 mm (H x W x D) 3 mm bezel for panel mounting
• Weight: ISM-3i: 3.7 kg
• Size ISM-3x: 125 X 185 x 160 mm (H x W x D)4 mm bracket for mounting
• Weight ISM-3x: 3.8 kg
• Cabinet & display: Stainless steel, foil front plate. Mounting bracket for sensor box and mounting bezel for display unit
• Shipping consignment incl.: Shipping crate, user guide, power cable, 1 metre sample gas tube, stainless steel, ID: 1.0 mm, OD: 1/16″, swagelok and 1/8″ BSP T-fitting

Consumables
For information about consumables for the ISM-3 Oxygen Analysers click here.

The following are the different ISM-3 versions