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MODEL 70 Percent Oxygen Analyzer

Updated:2025-03-13

Brand: AMI
Model: MODEL 70
Description: The MODEL 70 is a Percent Oxygen Analyzer that is a perfect choice for accurately measuring in a NON- FLAMMABLE gas stream. The MODEL 70 is supplied in a compact, panel mount package and suitable for
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Product Details

MODEL 70 Percent Oxygen Analyzer Description：

Operator Manual Data Sheet AMI Overview

Features & Benefits

FULL OF STANDARD FEATURES

The MODEL 70 Percent Oxygen Panel Mount Analyzer comes standard with advanced features, including 4-user selectable analog output ranges, dual independent alarms, comprehensive alarm logic (fail safe or non-fail safe, latching or non-latching and independent alarm delays), alarm bypass, and 3 levels of security settings. Automatic data logging provides detailed time-stamped records of O2 measurement, temperature, supply voltage and power brown-out history.

ZIRCONIUM OXIDE SENSOR TECHNOLOGY

AMI’s zirconium oxide sensors are extremely accurate and stable, have a 10-year life expectancy and are unaffected by barometric pressure fluctuations or rapidly changing temperatures from 0-120°F. Recommended calibrations are 1-2 times per year in the 0-25% oxygen range.

EXCEPTIONAL VALUE

The MODEL 70 is the perfect choice for accurately measuring percent levels of oxygen in either inert background gases or enriched oxygen gas streams up to 95% O2. The MODEL 70 is a maintenance-free, compact analyzer loaded with advanced features at an exceptional price.

Technical Specifications

Physical & Eletrical Specifications
WEIGHT	GAS CONNECTIONS	WETTED PARTS
3.0 lbs (1.4 kg)	¼” 316 S.S. compression fittings	316 S.S. fittings & O-rings (Viton)
POWER
10-28VDC < 3 watts, supplied with a 115VAC to 12VDC adapter

Warranty: 2 years for parts and labor. 2 years for zirconium oxide sensor.

Operational Specifications
OUTPUT RANGES (USER SELECTABLE)		AMBIENT OPERATIONAL TEMPERATURE	FLOW RATE (RECOMMENDED)	INLET GAS PRESSURE	OPERATIONAL CONDITIONS
Standard	Optional
0 – 1.0% 0 – 5.0% 0 – 10.0% 0 – 25.0%	0 - 50% 0 - 95%	32°F to 122°F (0°C to 50°C)	0.1 to 2.0 SCFH (0.05 - 0.9 Lpm)	1.0 − 30 psig	Pollution Degree 2 Installation Category II

Analyzer Performance Specifications
90% UPSCALE RESPONSE TIMES FOR SPECIFIC RANGES	SENSITIVITY	REPEATABILITY	Drift	Humidity	Approvals
0-25% <12 seconds 0-95% <12 seconds	0.5% of full scale	+/- 0.1% of range or +/- 0.1% of oxygen, whichever is greater	±1.0% of full scale in 4 weeks at constant temperature	<85%, non-condensing	designed to meet General Purpose requirements

Analyzer Key Features
ALARMS	2 fully adjustable concentration alarms with configurable Alarm logic and Relay Contacts, featuring: Alarm Bypass Latching/Non-latching Alarm Delays Failsafe/Non-failsafe Trigger Above or Below Setpoint Open or Close on Alarm
ANALOG OUTPUTS	4 − 20mA, 0 - 1 VDC or 1-5VDC isolated output signals and Modbus bi-directional RS485 communication
COMMAND CENTER	Software that works across AMI’s Analyzers and gives users access to advanced functions: Calibration Details Alarm Configurations Data Logger with Adjustable Interval Setting
ACCESSORIES	COMMAND CENTER Zirconium Oxide Sensors (note: sensor is not field replaceable)