Honeywell Citytech AsH3 3E 1 LT Sensor Datasheet
Summary
This portable electrochemical gas sensor is engineered for reliable detection of Arsine gas ($\text{AsH}_3$), designed specifically for safety-critical and continuous monitoring applications. The accompanying technical manual provides comprehensive specifications, including measurement ranges, stability data, environmental operating limits, cross-sensitivity charts, and crucial installation guidelines. It is essential reading for life safety professionals, industrial monitoring engineers, and technicians requiring high-accuracy gas detection in demanding environments.
Page 1 Text Content
Sensoric As H3 3E 1 LT
Arsine (As H3) Gas Sensor Patent: US 7060169 B2
Key Features & Benefits: Excellent stability • Resistant to drying out • Reliable in continuous flow applications
Technical Specifications Part Numbers
MEASUREMENT
As H3 3E 1 LT Part Number
Operating Principle 3-electrode electrochemical
Mini 0731-337-30009
Measurement Range 0-1 ppm As H3 Maximum Overload 20 ppm 4 Series 0731-337-30049 Lower Detection Limit <30 ppb when using
7 Series 0731-337-30079
recommended electronics
Filter None Classic 0731-337-30069
Sensitivity 1400 ± 450 n A/ppm
Smart 0731-337-30259
Response Time (T90) <30 Seconds
Transmitter 0731-337-30659
Baseline Offset (clean air) < ±20 n A Zero Shift (-40°C to +50°C) < ±40 ppb
Repeatability <2% of signal Orders should be placed through Linearity <10% of full scale Sensoric Gas Sensors in Bonn.
ELECTRICAL Available in: Recommended Load Resistor 1.5 kΩ Bias Voltage 0 V Resolution Dependent on Electronics <15 ppb when using recommended circuitry MECHANICAL Housing Material PPO Noryl Weight 4.5 g Orientation Any
ENVIRONMENTAL
Typical Applications Portable & fixed life safety
Operating Temperature Range:
Continuous -20°C to +40°C Intermittent -40°C to +50°C
Operating Pressure Range Atmospheric ± 10% Operating Humidity Range 10% to 95% RH non-condensing
INTRINSIC SAFETY DATA IMPORTANT NOTE: Connection should be Maximum at 2000ppm <0.2 m A at 100 ppm made via PCB sockets only. Soldering to pins Maximum o/c Voltage <500 m V will render your warranty void.
Maximum s/c Current <1.0 A
All performance data is based on conditions
LIFETIME at 20°C, 50%RH and ambient pressure
Long Term Output Drift <5% per 6 months using Sensoric recommended circuitry. For Expected Operating Life 2 years in normal use information on sensor performance under
Storage Life 3 months in sealed container other conditions, refer to the Operating Standard Warranty 10 months from date of despatch Principles.
Doc. Ref.: ash33e1lt.indd Issue 3 ECN I 2423 Page 1 of 3 20th June 2011
Page Summary Contents For Honeywell Citytech AsH3 3E 1 LT Sensor Datasheet
Manual Details
| Brand | Honeywell |
|---|---|
| Pages | 3 |
| File Size | 1.23 MB |
| Published | June 05, 2026 |
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Frequently Asked Questions
What connection method must I use when installing the sensor?
Connection must only be made via PCB sockets; soldering to pins voids the warranty.
How often should I test the sensor's functionality for safety?
It is required that you confirm device function by exposure to target gas (bump check) before each use.
What are the continuous operating temperature limits?
The sensor can operate continuously in a range of -20°C to +40°C C.
How long is the expected operational life of the sensor?
The expected operating life, under normal conditions, is 2 years.