Sensor Exchange Program (SXP®)

Timely and consistent shipments of factory pre-calibrated sensors for your ChemDAQ chemical monitoring system.

ChemDAQ E-Cell Sensor
Step 1

Purchase Coverage

Customers purchase a year's worth of SXP coverage up front with every Steri-Trac®, SafeCide™, and/or VaporAlert™ monitor purchase.

Step 2

Coverage Begins

SXP coverage begins with the shipment of equipment for self-installed monitor purchase or the completion of a purchased on-site ChemDAQ product commissioning.

Step 3

Sensor Exchanges

The SXP provides a freshly calibrated sensor approximately every four months, for a total of three factory pre-calibrated sensors per monitor, per year.

Step 4

Shipment

ChemDAQ ships the pre-calibrated sensor for the specific chemical measured at each monitoring point, along with a calibration certificate for your records.

Step 5

Returns

Upon receipt of the calibrated sensor, customers are required to mail back the expired sensor using the pre-paid return label included in the shipment.

Step 6

Renewal

Our Customer Account Managers will reach out to renew coverage annually to ensure continuation of this critical service to your monitoring system.

Returns & Exchanges

The SXP ensures that your ChemDAQ chemical monitoring system remains calibrated properly to provide you with the most accurate real-time vapor readings to keep employees safe. Successful program participation is contingent on the timely attention and participation throughout each sensor exchange cycle.

Each pre-calibrated sensor is shipped with a prepaid return shipping label. The SXP contact at each facility is responsible for not only connecting the fresh sensor, but also returning the expired sensor to ChemDAQ using the prepaid, pre-addressed return label. 

Upon receipt of a fresh pre-calibrated sensor, domestic customers have up to 10 days to complete the return. International customers have up to 15 days. Sensors that are not returned are be subject to a lost sensor fee. 

Frequently Asked Questions

RETURNS & EXCHANGES

How do I return the sensor?

Each factory pre-calibrated sensor comes with a pre-paid, pre-addressed return label. Once the old sensor is removed and the fresh sensor is installed, simply place the old sensor in the original packaging and use the pre-paid label to mail back to ChemDAQ. If you need new packing materials or a new return label, please contact Technical Services. 

CONTRACT RENEWALS

What are the fees to participate? How are they calculated?

Annual SXP participation is quoted to each customer based on their ChemDAQ equipment inventory. Quotes can vary from year-to-year.

Is my SXP coverage auto-enrolled every year?

No. During your second and third sensor exchange cycles, you will begin to receive information on how to renew your SXP coverage for the next year. For questions or to renew in advance, contact your account manager.

What happens if I don't renew my SXP coverage?

If you don’t renew your annual SXP participation, your account will be placed on hold which will suspend pre-calibrated sensor shipments. Without freshly calibrated sensors, your monitors will stop measuring gas levels around 6 months out from the last sensor exchange, putting workers at risk. We will happily restore your account upon receipt of payment or purchase order including a 10% restoral fee.

INSTALL INSTRUCTIONS

How do I install a fresh sensor via cable?

1. Disconnect the expired Sensor by doing the following:

a. Remove the expired Sensor from the Sensor Cradle by lifting the Sensor straight up.

b. POWER OFF the Sensor by pressing and holding the POWER BUTTON until the LED turns off.

(The NO SENSOR message will be displayed on the Area Monitor until the fresh Sensor is installed.)

c. Unplug the USB cable from the Sensor by turning the connector’s locking ring counterclockwise. Then pull out the connector 

2. Install the fresh Sensor by doing the following:

a. Connect the USB cable by inserting into the USB port of the fresh Sensor. Secure by gently rotating the locking ring clockwise.

b. POWER ON the fresh Sensor (if necessary) by pressing and holding the POWER BUTTON for approximately five seconds, until the LED illuminates.

c. Set the Sensor in the Sensor Cradle. The button on the back of the Sensor slides between the tabs on the Cradle.

d. WAIT AT LEAST TWO MINUTES BEFORE ZEROING.

3. If Required, ZERO the fresh Sensor

4. Package the expired Sensors and return them to ChemDAQ. Packing material, and a return-shipping label is provided for your convenience.

How do I install a fresh sensor via Bluetooth Wireless?

1. Disconnect the expired Sensor by doing the following:

a. Remove the expired Sensor from the Sensor Cradle by lifting the Sensor straight up.

b. POWER OFF the Sensor by pressing and holding the POWER BUTTON until the LEDturns off. 

(The NO SENSOR message will be displayed on the Area Monitor until the new Sensoris installed.)

c. Unplug the Power Adapter from the Sensor by gently twisting the locking ring counterclockwise and pulling the connector straight out.

2. Install the fresh Sensor by doing the following:

a. Connect the Power Adapter (C): Insert connector and gently turn the locking ring clockwise.

b. POWER ON the fresh Sensor by pressing and holding the POWER BUTTON for approximately five seconds, until the LED illuminates.

c. At the Area Monitor, access the Bluetooth Interface. (MENU > [Passcode]>Bluetooth)

d. In the Bluetooth screen, press SENSOR CONNECTION. 

The Area Monitor will now scan for Bluetooth devices within range and will list their serial numbers and/or device names on the display. Your fresh Sensor will be listed by its serial number. If the serial number does not appear, press RESCAN.

e. Once you have found the fresh Sensor’s serial number on the list, use the virtual keypad to select it. (If the Sensor is #3 on the list, press 3 on the keypad.) Follow the prompts.

f. When communications are established, press BACK to return to the Home Display. 

The Area Monitor might display a “No Sensor” message temporarily. This will clear within a few seconds after system updating is complete.

g. Set the Sensor in the Sensor Cradle. The button on the back of the Sensor slides between the tabs on the Cradle.

h. WAIT AT LEAST TWO MINUTES BEFORE ZEROING.

3. If required, ZERO the fresh Sensor.

4. Package the expired Sensors and RETURN THEM TO CHEMDAQ. Packing material, and a return-shipping label is provided for your convenience.

CALIBRATION PROCESS

Why does my sensor need to be calibrated?

Sensors can change over time, so all gas sensors require calibration at regular intervals. The calibration process ensures that the system is working properly and that the sensor’s response to the gas is accurate.

Why can't I calibrate it myself?

ChemDAQ specializes in providing gas monitors for various chemical biocides, most of which are highly reactive. The more reactive the gas, the more hazardous the gas and more difficult the calibration process becomes. By housing the calibration process in ChemDAQ’s factory, customers can be assured their calibration has been completed properly, using the same gasses our sensors are designed to detect.

How do you get a true read on the gases?

ChemDAQ calibrates each sensor to the appropriate target test gas. The gas mixtures we use are analyzed and certified to be a specific gas concentration. And for those gasses we can’t purchase in a compressed gas cylinder (like Peracetic Acid/PAA), we generate our own vapors to analyze in-house.

How does the calibration process work?

The sensors are exposed to both zero air and span gas (test gas containing target gas) and the output from the sensor modules is tracked with a custom-designed computer data acquisition system. This system guides the technician through the calibration process, while measuring the sensitivity, response time and many other parameters of sensor response.  

If all the parameters are met, then the sensor passes. If the sensor does not pass, it is withdrawn from service.

Can I retrieve historic calibration data from the sensors I send back?

Yes, all of our calibration records are stored in a database that provides full traceability. Any additional testing, such as as-received test data, may be an additional charge.

What happens if my sensor doesn't pass calibration testing?

If a returned sensor is found to be sub par, it will be replaced by ChemDAQ at no cost. Similarly, if a sensor were to ever fail onsite, simply give us a call (1-800-245-3310), and we will send a replacement to you at no charge.

TROUBLESHOOTING

How do I know when to change my sensor?

On each new sensor, you will find a calibration sticker that states when the calibration is due for the sensor. This date is normally 4 months from the actual calibration date and should correspond to the time when you should expect the freshly calibrated sensor for exchange.

What happens if my sensor is past its calibration date?

The calibration on the sensors tends to hold, so if you’re past the date, the sensor is likely still within specification and will be cleared for use until the exchange sensor arrives. The LED indicator on the sensor will help provide guidance on sensor calibration status (see below).

What is the LED light on my sensor?

The LED on the sensor is designed to change color depending on the time when calibration is due. The LED will remain green until the sensor is about to reach the 4-month mark.

Why is the LED light yellow/orange?

At around the 4-month mark from calibration, the LED light will change to an orange/yellow color. At that point if the exchange sensor has not arrived, please contact ChemDAQ’s Technical Services team to inquire about your sensor exchange.

My LED light is red. Should I be concerned?

If the LED light turns red or flashes red, that indicates that the sensor is due for calibration. SXP customers should not see that condition, but if you do, please contact Technical Services immediately.

What happens if I don't get my sensor calibrated?

At 6 months post-calibration, the sensor will shut off and will not be able to be read by your area monitor or tablet. Please contact Technical Services if you encounter this.