HPQ-T PIPE MOUNTED, SELF-CONTAINED LIQUID SENSOR The HPQ-T sensor is designed specifically for liquid level detection by non-contact methods in clear or very translucent pipes. The sensor is mounted on a pipe that is between 3 to 7mm or 8 to 13mm in diameter and features an infrared light beam that becomes refracted and undetectable by the receiver when the liquid is present. The device runs on 10-28 VDC, has a response time of 2 msec max, has Light Operate/ Dark Operate Selectable output functioning, and has a 100 mA NPN or PNP output. There is minimal malfunction when air bubbles or water droplets are present. The indicator light is easy to view even when the sensors are gang mounted as all the controls and adjustments are located on the back side. |
Features and Benefits
Usage Recommendation |
Catalog Listings | |
HPQ-T1 | NPN Output, 8-13mm O.D. pipe use, standard gain setting for most applications. |
HPQ-T2 | PNP Output, 8-13mm O.D. pipe use, standard gain setting for most applications. |
HPQ-T1-004 | NPN Output, 3-7mmO.D. pipe use, standard gain setting. |
HPQ-T2-005 | PNP Output, 3-7mmO.D. pipe use, standard gain setting. |
HPQ-T1-008 | NPN Output, 8-13mm O.D. pipe use, 25% gain reduction from standard. |
HPQ-T2-009 | PNP Output, 8-13mm O.D. pipe use, 25% gain reduction from standard. |
Specifications | ||
NPN Models PNP Models | ||
Scanning Type | Through Scan | |
Supply Voltage | 10 to 28 V DC (ripple 10% max.) | |
Current consumption | 25 mA max. | |
Usable Pipe | see catalog listing chart | |
Standard detecting object | Water Note 1 | |
Repetitive detecting agency | 1 mm max. | |
Operating Mode | Light-operated/dark-operated selectable (with L-On/D-On selector) Detecting object: dark, Non-detecting object: light |
|
Output | Open collector of NPN transistor | Open collector of PNP transistor |
Response time | 2ms max. | |
Light Source | Infrared LED | |
Indicator | Red “on” with detection | |
Ambient Light | Incandescent 1000 lx max. | |
Operating temperature | -10 ~ +55°C | |
Storage temperature | -25 ~ +70°C | |
Humidity | 35~85% RH (without condensation) | |
Insulation resistance | 20 M min. (at 500 V DC) | |
Dielectric strength | 1000 V A 50/60 Hz 1 minute | |
Vibration | 10~55 Hz, 15 mm double amplitude, 2 hours in each direction of X,Y,Z | |
Shock | 500 m/s2 (approx. 50g) 3 times in each direction of X,Y,Z |
|
Sealing | IP50 (IEC standard) | |
Mass | Approx. 25g | |
Protection | False pulse protection (20ms type), reverse polarity protection | |
Approvals-CE to be completed by end 2002 |