A - Base Model
• Easy to use manual potentiometer calibration with LCD digital displays for each gas
• Temperature controlled sensors to reduce drift due to ambient temperature swings
• Long life electrochemical O2 sensor
• Modular, field-cleanable infrared CO2/CH4 detector
• Cabinet positive-pressure kit to minimize corrosive effects of hydrogen sulfide (H2S) on cabinet electronics & sensors
• Built in sample pump, pre-filter, filters, and flow meter
• Automatic moisture removal without the use of cooling water, compressed air or failure-prone thermal-electric elements
• Vacuum gauge and valve to allow user to measure and minimize vacuum effects if unit is vented back to blower
• Rugged NEMA4 (IP65) enclosure
• 4 - 20 mA outputs for each gas
• Low flow alarm & relays

B - 'Cal-Now' Model
• Same features as Base model, plus:
• Microprocessor control and LCD touch screen display
• Graphing view shows approx. 12 hours of historical data
• Display includes access to alarms, basic troubleshooting guides, and sensor diagnostic information
• Magnetic 'cal now' button allows 'one touch' calibration without the need to open the enclosure door

C - Full Auto-calibration Model
• Same features as Base and 'Cal Now' models, plus:
• Automatic analyzer calibration with full-color touchscreen LCD display
• Preventative maintenance alerts and user adjustable alert frequency

OPTIONS
• Gas hi/low alarms with relay contacts
• Isolated analog, RS232, RS485, MODBUS, and Ethernet outputs available
• Class 1 Division 2 Group BCD rated purge kit for use in hazardous areas
• Cold weather package for operation to -20°C (-5°F)
• Solid-state cabinet coolers that do not require instrument air

CALIBRATION
• Ambient air for O2 span and CO2 & CH4 zero
• Analyzed calibration gas of CH4 in nitrogen with a representative balance of CO2 and N2 for CO2 & CH4 span and O2 zero

Method of Detection:
Long life electrochemical O2 sensor, field-cleanable infrared CH4 & CO2 detector

Ranges Available:
0-25.0% O2; any range between 0-50.0% and 0-100.0% CH4, CO2

Resolution:
0.1% on CO2, O2, & CH4

Accuracy and Repeatability:
±1% of full scale

Drift:
Less than 2% of full scale per month

Response Time (T-90):
Less than 30 seconds not including sample line delay

Ambient Temperature Range:
40-120°F (4-48°C). Lower temperatures (-5°F, -20°C) with Cold Weather Package

Linearity:
±1% of full scale for each gas measured

Size and Weight:
Approx. 24" H x 20" W x 10" D @ 90 lbs (61 x 51 x 25 cm @ 20 kg) Physical data may vary depending on options required

Power:
115VAC 60Hz (220VAC 50Hz available)

Output Options:
4-20ma into 500 ohms non-isolated standard. Isolated 4-20mA, RS232, RS485, MODBUS, Ethernet outputs optional

Alarms:
High O2, high CO2, low CH4, low flow; SPDT relays with 10A contacts

H-Tech Shipping Information
Estimated Ship Dimensions: " x " x "
• Estimated Ship Weight: lbs
• Lead time: 63 days
• Shipping origin: Niagara Falls, United States
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