Honeywell Citytech AsH3 3E 1 F LT Sensor Datasheet
Summary
Monitor air quality with this high-stability electrochemical Arsine (AsH₃) gas sensor. This advanced unit offers reliable detection across a wide range of conditions, suitable for both portable and fixed life safety applications. The manual provides detailed technical specifications covering operating principles, measurement ranges (0-1 ppm), cross-sensitivity data, installation guidelines, and crucial intrinsic safety notes required for proper system integration. Ideal for industries requiring rigorous gas monitoring in continuous flow environments.
Page 1 Text Content
Sensoric As H3 3E 1 F LT Arsine (As H3) Gas Sensor with H2S Filter
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 F LT Part Number
Operating Principle 3-electrode electrochemical
Mini 0731-237-30009
Measurement Range 0-1 ppm As H3 Maximum Overload 20 ppm 4 Series 0731-237-30049 Lower Detection Limit < 30 ppb when using
7 Series 0731-237-30079
recommended electronics
Filter To remove H2S Classic 0731-237-30069
Filter Capacity 200 ppm hr
Smart 0731-237-30259
Sensitivity 1400 ± 450 n A/ppm
Transmitter 0731-237-30659
Response Time (T90) <30 Seconds Baseline Offset (clean air) < ±20 n A Zero Shift (-40°C to +50°C) < ±40 ppb Orders should be placed through Repeatability <2 % of signal Sensoric Gas Sensors in Bonn.
Linearity <10% of full scale
Available in:
ELECTRICAL 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 made via PCB sockets only. Soldering to pins
Maximum at 2000ppm <0.2 m A at 100 ppm
will render your warranty void.
Maximum o/c Voltage <500 m V 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.: ash33e1flt.indd Issue 2 ECN I 2423 Page 1 of 3 20th June 2011
Page Summary Contents For Honeywell Citytech AsH3 3E 1 F LT Sensor Datasheet
Manual Details
| Brand | Honeywell |
|---|---|
| Pages | 3 |
| File Size | 1.22 MB |
| Published | June 05, 2026 |
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Frequently Asked Questions
Must I test the sensor before every use?
Yes, it is a requirement to confirm the device function by exposure to target gas (bump check) before each use of the sensor or instrument.
What is the safe method for connecting the sensor when using PCBs?
The connection should be made via PCB sockets only. Soldering directly to the pins may void your warranty and requires extreme caution.
What are the operating temperature limits for this gas sensor?
The continuous operating temperature range is -20°C to +40°C, while the intermittent range extends from -40°C to +50°C.