Siemens Temperature Sensor - QAD22 - NI1000
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Product Information
Full details
The Siemens QAD22 is a surface-mounted flow temperature sensor for HVAC and industrial systems, offering precise temperature readings in demanding environments. Its key benefit is the reliable LG-Ni1000 sensing element for accurate measurements across a wide temperature range. A potential consideration is its specialized nature, requiring appropriate installation expertise. It features a compact design and is built for durability.
All features
| Model Part Number | QAD22 |
|---|---|
| Brand | Siemens |
Extended Product Information
FAQs
What type of sensor element does the QAD22 use?
The QAD22 uses an LG-Ni1000 sensing element, which is a Nickel-based sensor.
What is the temperature range for the Siemens QAD22?
The sensor operates within a temperature range of -30°C to 130°C.
How is the QAD22 installed?
It is designed for surface mounting directly onto pipes or other surfaces where temperature measurement is required.
What are the dimensions of the QAD22 sensor?
The sensor has dimensions of 74x6.2x4.5mm with a height profile of 67mm.
Is the QAD22 a powered sensor?
No, the QAD22 is a passive sensor that requires a compatible measurement or control device to provide excitation and read the resistance change.
Can this sensor be used outdoors?
While durable, its suitability for outdoor use depends on environmental protection provided by the installation and the specific rating of the sensor itself. Consult the full datasheet for environmental ratings.
Troubleshooting
Inaccurate temperature readings
Ensure the sensor is properly mounted with good thermal contact to the surface. Verify wiring connections and confirm the connected device is configured for an LG-Ni1000 sensor. Check if the operating temperature is within the sensor's range.
Sensor not detected by control system
Double-check all electrical connections to the sensor and the control unit. Ensure the control unit is powered on and correctly configured to accept the sensor's input type. Test continuity of the sensor wiring.
Sensor shows a constant reading
This could indicate a wiring issue or a failure of the sensing element. Verify wiring and check if the temperature at the measurement point is indeed stable. If the temperature is fluctuating but the sensor reading is not, the sensor may need replacement.
Pros and Cons
Pros
- High accuracy due to LG-Ni1000 sensor
- Wide temperature range supports various applications
- Compact and easy to mount on surfaces
- Durable design for industrial use
- Reliable Siemens build quality
Cons
- Requires specific HVAC/industrial knowledge for installation
- Surface mounting may not be suitable for all measurement points
- Not designed for digital communication output
- Limited to temperature measurement only
Setup, Compatibility & Care
Setup: The QAD22 is a passive sensor and requires connection to a compatible measurement or control device. Ensure the sensor is securely mounted directly onto the surface to be measured using appropriate thermal paste or mounting hardware for optimal heat transfer. Connect the sensor's leads to the designated terminals on your control unit or transmitter, paying close attention to polarity if specified by the connected device.
Compatibility: This sensor is compatible with any control system or meter that accepts an LG-Ni1000 (1000 Ohm at 0°C Nickel) input signal. Always verify the input specifications of your connected equipment before installation.
Care: The QAD22 requires minimal care. Keep the sensor's surface clean and free from dirt or debris that could impede thermal contact. Avoid exposing the sensor to temperatures outside its specified operating range or to excessive physical impact. No user-serviceable parts are inside; maintenance should only be performed by qualified personnel.