DPT-AP Fiber Optic Sensor for DOpO2


High performance Zero drift oxygen sensor Stainless Steel probes (gas and liquids). 1/16″ ( 0.06″, 1.59 mm) OD. 7″ (17.78 cm) long, SS, with 5′ long extended fiber optic.55 bar pressure rating. Price include standard factory calibration.  Requires DOpO2 electronics module

SKU: DPT-AP-156 Categories: ,


The DPT-AP is a stainless steel probe with embedded thermistor and optical fiber that couples t the DOpO2-Fiber Optic sensor electronics

It is a high performance Zero Drift oxygen sensor Dip probe (gas and liquids) with embedded thermistor.  The OD comes in sizes of 0.125″, 0.156″, 0.250″,0.156″ or 0.375″ .(3.97 mm) optional over-coatings are available. The fiber is  1000/2000 micron polymer fiber depending on the size , 7″ (17.78 cm) long, SS, 55 bar pressure rating. 5′ (1.5 m) long Thermistor. Price includes factory calibration

Our high-performance Zero-drift oxygen sensor stainless steel probes with an embedded thermistor are designed for monitoring of oxygen in gases and dissolved oxygen in liquids (water, blood,…). This fiber optic probe is 7″(17.78 cm) long and it has 1000/2000 micron polymer fiber. It is biocompatible and can be used in biological environment, life science,… etc.

Factory calibration is included. 

Our dip probes are provided with different overcoating:

1- With no overcoat with a response time (t90) of about 3 Seconds.

2- With a white acrylic overcoating for reflected signal enhancement with a response time (t90) about 1 min.

3- With a black acrylic overcoating to protect the sensor from UV, ambient light, environmental effects, and biofouling, with a response time of about 2 min.


Dip Probes (AP formulation) Specifications

Response rate of probes No Overcoating:  3 Secs.

White Overcoating:  ~1 min

Black Overcoating:   ~2 min

Dynamic range in gas 0-100% O2/0-760 mmHg O2
Dynamic range in water (DO) 0-40 ppm (wt)
Dynamic range in other liquids 0-oxygen saturation level
Resolution in gas 0.005% O2 / 0.04 mmHg
Resolution in water (DO) 0.002 ppm (wt) / 2.0 ppb (wt)
Resolution in other liquids 0.005% of oxygen saturation level
Accuracy 5% of reading
Lowest detectable level (gas) 0.005% O2 / 0.04 mmHg
Lowest detectable level (water) 0.002 ppm (wt) / 2.0 ppb (wt)
Lowest detectable level in other liquids 0.005% of oxygen saturation level
Sensor drift Zero drift long-term continuous operation
Operating temperature -50 to + 100 C
Probe lifetime 1 year before refurbishing

Additional information

Weight 1 lbs
Dimensions 13 × 13 × 3 in
Probe Diameter

125, 156, 250, 375


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