Selecting the Right Product

Q: How do I select the right equipment for my application?

A: Seametrics Authorized Distributors are trained and very knowledgeable of all Seametrics products. Please contact a distributor to get detailed case-by-case applications support. Find your local distributor here.

Q: What is conductivity and why do I need to know this when using a magmeter?

A: Conductivity refers to the ability of a material to transfer electrical potential. This value is typically measured in microSiemens per centimeter. Seametrics magmeters require a conductivity of at least 20 mS/cm in order to operate properly.

Q: How does an electromagnetic flow meter work?

A: This video illustrates the difference between mechanical and electromagnetic flow meters.

Q: Why can’t I use my MJ meter with a Seametrics Display unit?

A: The FT400 Series displays require a frequency of at least 1 Hz in order to operate properly and the MJ and WJ Series meters typically do not provide a pulse frequency that exceeds 1 Hz. Therefore Seametrics does not recommend using the MJ or WJ units with Seametrics display units. MJ and WJ meters are intended for totalizing only and often a simple pulse counter (not provided by Seametrics) is sufficient for this task.

Q: Which meters are compatible with the chemicals in my process?

A: Check our Seametrics Chemical Compatibility Database to see if the chemicals in your process are compatible with Seametrics meters. If you cannot find your chemical in our database, we recommend checking Cole Parmer’s Database or other external resources.

Q: Why is it important to meet the straight pipe requirements?

A: Without proper straight pipe before and after the flow meter, the profile of the flow will not be smooth and a proper reading of the flow rate cannot be measured. For specific straight pipe requirement please reference the appropriate instruction manual or technical bulletin.

Q: Is viscosity of my fluid going to cause any issues with a Seametrics meter?

A: Typically, as long as there is enough pressure in the line to push the fluid through the line, your Seametrics flow meter should function. For mechanical meters, if the fluid’s viscosity is substantially different from the viscosity of water (0.894 cP) you will need to field calibrate your Seametrics meter. For electromagnetic flow meters, the accuracy of the meter will not be affected by the viscosity of the fluid.

Q: What type of output signals do Seametrics meters have?

A: With the exception of the MJ and WJ units, most Seametrics products have a current sinking pulse output. This is often referred to as an open collector or NPN signal. The FT420 and AO55 units also have analog output capabilities.

Q: How do I determine if other equipment is compatible with a Seametrics unit

A: The quickest way to determine this is by doing the “tap test.” If you can make your pump operate or your display count up by tapping the two input terminals together with a jumper wire, then the unit should be compatible with your Seametrics unit.

Q: What is the difference between digital and analog output?

A: A digital signal is discreet which means you only get a signal at set intervals while an analog signal is a continuous waveform.

Q: How does an analog signal work?

A: An analog signal relies on current through a wire to transmit a signal as opposed to a voltage change.

Q: What is the difference between accuracy of reading and accuracy of full scale?

A: Accuracy of reading means the percentage of variation will remain a constant percentage over the full range of flow. Accuracy of full scale means the percentage of variation is fully dependent on the maximum flow rate of the device and the variation will be a constant flow rate (ie: gpm) as opposed to a percentage. Please see the technical bulletin on Full Scale Accuracy for more details.

Q: What power supply should I select for my Seametrics meter?

A: It is very important to have the correct power supply for your device, and each Seametrics meter has different power requirements. To find out what particular supply should be used for your meter, see our Power Supply Chart.

Setting Up Your Equipment:

Q: How do I determine my K-factor?

A: If you know the model number of your meter, please use our online K-factor Calculator to determine your k-factor.

Q: Why does insertion depth matter so much when using an insertion meter?

A: Seametrics insertion meters are designed to be installed at a very specific location based on fluid dynamic principles. In order to function properly, the insertion meter must be placed in the location where the flow profile will stay most consistent during fluctuating flow ranges. To learn more about this concept, please see this video.

Q: Where can I find a wiring diagram for my specific equipment?

A: Check our Wiring Diagrams by Components page for most wiring diagrams. If your configuration is not found, please reference the instruction manuals for your components or contact your local distributor.

Q: How do I set up my new FT400 Series display unit?

A: Please reference the FT400 Series Instruction Manual for detailed programming instructions.

Q: How do I set up my analog 4-20mA loop?

A: Watch this video to learn how to connect your analog loop and use a 4-20mA signal.

Q: How do I mount a Seametrics insertion meter on my pipe?

A: When using insertion meters it is crucial to use the correct fitting. View our list of tee, saddle and weld braze fittings for fixed depth insertion meters. For adjustable depth insertion meters, you will be required to use a saddle fitting. Please see the Installation Bulletin for an explanation of how to mount your saddle fitting.

Q: Do I need to ground my Seametrics unit and how should this be done?

A: Grounding is very important for most Seametrics meters. Please check the instruction manual for your specific device and read through our Grounding Technical Bulletin for further details.

Troubleshooting Your Equipment:

Q: Who should I contact for help with troubleshooting my equipment?

A: If the answer to your questions cannot be found on our Website, please contact your local distributor for further assistance. Your distributor will be able to provide direct support for your application.

Q: How do I find and identify the model and serial number of a Seametrics meter?

A: The model number and serial number can both be found on a white label on your product. The model number will be a combination of letters and numbers as identified in our catalog, and the serial number is an eight-digit number.

Q: My meter is battery powered. How long should I expect the battery to last?

A: The battery life is completely dependent on the application and use of the meter. Please refer to the instruction manual of your specific device for an estimate of the battery life to be expected.

Q: What is “phantom flow” and how can it be eliminated?

A: “Phantom flow” refers to a situation where flow shows up on the electronics display even when there is no flow going through the line. This sometimes occurs with electromagnetic flow meters when there is electrical noise interference coming from another device. This issue can usually be resolved with grounding modifications.

Q: How can I determine whether it is the sensor or the controller that is not working properly?

A: For mechanical meters, a voltmeter can typically be used to check for pulse output. See this video for how this should be done. For the insertion magmeter, the pulse output is too fast to be seen with a voltmeter, this is why there is an LED indicator light which indicates whether the meter is sensing flow. The “Tap Test” can be used to determine whether the controller is working properly.

Q: Where can I find more troubleshooting help for my specific product?

A: For detailed troubleshooting tips on certain products, please reference the last page of the instruction manual for the specified products.

Warranty & Non-Warranty Repairs

Q: Where can I get replacement parts for my meter?

A: Please contact your local Seametrics distributor for any replacement parts.

Q: How do I return Seametrics products for evaluation?

A: Please contact your local Seametrics distributor and have them submit an RMA request for any products which you would like Seametrics to evaluate.

Q: Can Seametrics calibrate my meter?

A: Seametrics can calibrate certain meters in house. Other meters will receive a Certificate of Conformance. Please contact your local Seametrics distributor for further details.

Q: Why don’t magmeters require periodic calibration?

A: Since magmeters do not have mechanical parts that wear out, once the unit has been calibrated (during the manufacturing period), it should not drift from this original setting, and therefore does not require period calibration.

Q: If I want to return an unused product is there a restock fee?

A: There is usually a restocking fee associated with unused product returns. Please contact your local Seametrics distributor for further details.

Q: What does Seametrics’ Warranty Policy cover?

A: Seametrics has a 2 year warranty on all products. This limited warranty does not cover customer damage. For full details on warranty coverage, please see our Limited Warranty Policy Document for further details.

Q: Who pays for shipping when I need to send in a product for warranty evaluation?

A: Standard Seametrics RMA process requires that the customer pay for shipping on returned items. If the unit is shipped back to the customer after warranty repair, the outgoing shipping costs will be covered by Seametrics.

Q: How can I check the status of my RMA?

A: Please contact your local Seametrics distributor for status updates on any RMA’s.